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As filed with the U.S. Securities and Exchange Commission on June 3, 2025.

Registration No. 333-286059

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

AMENDMENT NO. 2
TO

FORM S-1

REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933

Ategrity Specialty Holdings LLC*

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of
incorporation or organization)

6331

(Primary Standard Industrial
Classification Code Number)

82-4925734

(I.R.S. Employer
Identification Number)

9 West 57th Street, 33rd Floor, New York, NY 10019
Telephone: (212) 509-1600

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Justin Cohen
Chief Executive Officer
9 West 57th Street, 33rd Floor, New York, NY 10019
Telephone: (212) 509-1600

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Marc D. Jaffe
Erika L. Weinberg
Gary D. Boss
Latham & Watkins LLP
1271 Avenue of the Americas
New York, NY 10020
(212) 906-1200

Eric Crespolini
Ategrity Specialty Holdings LLC
9 West 57th Street, 33rd Floor,
New York, NY 10019
Telephone: (212) 509-1600

Dwight S. Yoo
Elena M. Coyle
Ryan J. Dzierniejko
Skadden, Arps, Slate, Meagher & Flom LLP
One Manhattan West
New York, NY 10001
(212) 735-3000

Approximate date of commencement of proposed sale to the public: As soon as practicable after this registration statement is declared effective.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box. ☐

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

	Large accelerated filer ☐			Accelerated filer ☐
	Non-accelerated filer ☒			Smaller reporting company ☐
				Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

* Ategrity Specialty Holdings LLC will be converted to a Nevada corporation named Ategrity Specialty Insurance Company Holdings prior to the consummation of this offering.

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The information in this preliminary prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell nor does it seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted

Subject to completion, dated June 3, 2025

Preliminary prospectus

6,666,667 shares

Common stock

This is the initial public offering of shares of common stock of Ategrity Specialty Insurance Company Holdings. We are offering 6,666,667 shares of common stock in this offering.

Prior to this offering, there has been no public market for our common stock. The initial public offering price of our common stock is estimated to be between $14.00 and $16.00 per share. We have applied to list our common stock on the New York Stock Exchange (the “NYSE”) under the symbol “ASIC.” The listing will be subject to the approval of our application.

We are an “emerging growth company” as that term is defined in the Jumpstart Our Business Startups Act of 2012, and, as such, have elected to comply with certain reduced public company reporting requirements for this registration statement and may do so in future filings. See “Prospectus summary—Implications of being an emerging growth company.”

Upon completion of this offering, Zimmer Financial Services Group LLC (“ZFSG”) will continue to own more than a majority of the voting power of our shares of common stock eligible to vote in the election of our directors. As a result, we will be a “controlled company” as defined under the corporate governance rules of NYSE and will be exempt from certain corporate governance requirements of such rules. See “Management—Director independence and controlled company exemption.”

Investing in our common stock involves risks. See “Risk factors” beginning on page 19 to read about factors you should consider before purchasing shares of our common stock.

Neither the Securities and Exchange Commission (“SEC”) nor any state securities commission or regulatory authority has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

Per share

Total

Initial public offering price

Underwriting discounts and commissions(1)

Proceeds to us, before expenses

(1) See “Underwriting” for a description of compensation to be paid to the underwriters.

We have granted the underwriters an option for a period of 30 days from the date of this prospectus to purchase up to an additional 1,000,000 shares of our common stock from us at the initial public offering price less the underwriting discounts and commissions to cover over-allotments.

The underwriters expect to deliver the shares of common stock through the book-entry facilities of the Depository Trust Company on or about , 2025.

	J.P. Morgan						Barclays
	Citigroup			TD Securities			Wells Fargo Securities

, 2025

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Table of contents

	Page
About this prospectus		i
Prospectus summary		1
Risk factors		19
Forward-looking statements		59
Use of proceeds		61
Dividend policy		62
Capitalization		63
Dilution		65
Management’s discussion and analysis of financial condition and results of operations		67
Business		96
Regulation		111
Management		122
Executive and director compensation		127
Certain relationships and related party transactions		136
Principal stockholders		148
Description of capital stock		150
Shares eligible for future sale		157
Material U.S. federal income tax considerations to non-U.S. holders		160
Underwriting		164
Legal matters		174
Where you can find more information		175
Index to financial statements		F-1

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About this prospectus

Market and industry data

In this prospectus, we present certain market and industry data. This information is based on third-party sources which we believe to be reliable. We have not independently verified any third-party information. Forecasts and projections are based on historical market data, other publicly available information, our knowledge of our industry, and assumptions based on such information and knowledge. These forecasts and projections have not been verified by any independent source. In addition, assumptions and estimates of our and our industry’s future performance are necessarily subject to a high degree of uncertainty and risk due to a variety of factors, including those described in “Risk factors.” These and other factors could cause future performance to differ materially from our assumptions and estimates. See “Forward-looking statements.”

Trademarks and service marks

Trade names, trademarks, and service marks of other companies appearing in this prospectus are the property of their respective holders. Solely for convenience, the trademarks, service marks, and trade names are referred to in this prospectus without the SM and ® symbols, but such references are not intended to indicate, in any way, that the owner thereof will not assert, to the fullest extent under applicable law, such owner’s rights to their trademarks, service marks, and trade names.

Non-GAAP financial measures

This prospectus contains certain financial measures that are not presented in accordance with generally accepted accounting principles in the United States (“GAAP”). Under U.S. securities laws, these measures are called “non-GAAP financial measures.” We believe that certain non-GAAP financial measures provide investors in our common stock with additional useful information in evaluating our performance. Management believes that excluding certain items that are not indicative of core performance assists in evaluating our ability to generate earnings and to more readily compare these metrics between past and future periods. These non-GAAP financial measures may be different than similarly titled measures used by other companies.

These non-GAAP financial measures should not be considered in isolation from, or as substitutes for, financial information prepared in accordance with GAAP. There are limitations related to the use of these non-GAAP financial measures as compared to the most directly comparable GAAP financial measures.

We use the following non-GAAP financial measures throughout this prospectus as defined below:

•

Underwriting income is defined as income before income taxes excluding the impact of net investment income, net realized and unrealized gains (losses) on investments, other income, interest expense, and other expenses (which include expenses related to corporate activities and expenses recorded by us in anticipation of this offering).

•

Adjusted net income attributable to members is defined as net income attributable to members excluding certain non-operating expenses, which include expenses recorded by us in anticipation of this offering.

•

Adjusted return on members’ equity is defined as adjusted net income attributable to members expressed as a percentage of average beginning and ending members’ equity during the period.

For a reconciliation of such measures to their most directly comparable GAAP financial measures, see “Management’s discussion and analysis of financial condition and results of operations—Reconciliation of non-GAAP financial measures.”

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Glossary

The following are abbreviations and definitions of certain insurance, reinsurance, financial, and other terms used in this prospectus.

Absolute Return MidCap Fund—ZP Master MidCap Fund, Ltd., a Cayman Islands exempted company.

Absolute Return Utility & Infrastructure Fund—ZP Master Utility Fund, Ltd., a Cayman Islands exempted company.

Admitted insurer—An insurer that has received a license or certificate of authority from a state regulatory authority to sell insurance in that state. Admitted insurers are subject to various state laws that govern organization, capitalization, policy forms, premium rate approvals, and claims handling.

A.M. Best—A.M. Best Company, Inc., a rating agency and publisher for the insurance industry.

Ategrity Ltd—Our Bermuda-regulated reinsurance subsidiary, Ategrity Specialty Insurance Limited, a Bermuda exempted company (formerly known as Sequentis Reinsurance Company Limited) and wholly-owned indirect subsidiary of the Company.

Ategrity Specialty—Our Delaware-regulated insurance subsidiary, Ategrity Specialty Insurance Company, a Delaware corporation and wholly-owned direct subsidiary of the Company. Ategrity Specialty is licensed in the State of Delaware to transact certain lines of property and casualty insurance and is eligible or approved to write surplus lines in 48 states and the District of Columbia.

BMA—Bermuda Monetary Authority.

Combined ratio—The sum of the loss ratio and the expense ratio. A combined ratio under 100% indicates an underwriting profit. A combined ratio over 100% indicates an underwriting loss.

Commission—The fee paid to an agent or a broker for placing insurance or reinsurance, generally determined as a percentage of the written premium.

Distribution partners—Intermediaries with whom we have strategic partnerships, such as agents, brokers, or digital platforms, that help us reach and serve consumers more effectively. We count our distribution partners as our individual commercial relationships based on the unique producer code assigned to such distribution partner.

ES Requirements—The Economic Substance Act 2018 and the Economic Substance Regulations 2018.

Excess and surplus lines (“E&S”)—Lines of insurance which are generally unavailable from admitted insurers due to perceived risk related to the insured’s business and which, consequently, are placed by surplus lines agents or brokers with insurers that are not admitted in the subject jurisdiction. E&S insurance policies generally are not subject to regulations governing premium rates or policy language.

Excess of loss—A type of reinsurance that indemnifies the reinsured against all, or a specified portion of, losses on underlying insurance policies in excess of a specified amount, which is called an “attachment level” or “retention.” Excess of loss reinsurance may be written in multiple layers, in which, on any given layer, a reinsurer or group of reinsurers accepts a band of coverage up to a specified amount. Any liability exceeding the outer limit of the program reverts to the ceding company, which also bears credit risk to the reinsurers.

Expense ratio—The ratio, expressed as a percentage, of underwriting, acquisition, and insurance expenses less fee income to net premiums earned.

Facultative reinsurance—Facultative reinsurance is a specific reinsurance policy for which terms can be negotiated by the insurer and reinsurer on a risk-by-risk basis, rather than as to a group or class of business.

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Feeder Fund—ZP Utility Fund, LP, a Delaware limited partnership. The Feeder Fund operates as a feeder fund in a “master-feeder” structure, in which the Feeder Fund invests substantially all of its assets in the Absolute Return Utility & Infrastructure Fund.

Financial strength rating—The opinion of rating agencies regarding the financial ability of an insurance or reinsurance company to meet its financial obligations under its policies.

GAAP—Generally accepted accounting principles in the United States.

General Partners—The MidCap General Partner and the Utility General Partner.

Gross written premiums—Total premiums recorded on the books of an insurer at the time an insurance policy is issued, before deductions for premiums on ceded reinsurance.

Hard market—An insurance market generally driven by a shortage of underwriting capacity whereby coverage is harder to place, resulting in elevated rates and premiums.

Incurred but not yet reported (“IBNR”) reserves—Loss reserves for estimated losses which have been incurred but not yet reported to the insurer.

Incurred losses—The total losses sustained by an insurance company under a policy or policies, whether paid or unpaid. Incurred losses include a provision for claims that have occurred but have not yet been reported to the insurer.

Investment Manager—Zimmer Partners, LP, a Delaware limited partnership and the investment manager of the Absolute Return Utility & Infrastructure Fund, the Absolute Return MidCap Fund, and our fixed income portfolios. The Investment Manager is registered with the SEC as a registered investment advisor under the Investment Advisors Act of 1940. The Investment Manager is an entity affiliated with and controlled by ZFSG.

IRIS—NAIC Insurance Regulatory Information System, which is a collection of analytical tools designed to provide state insurance regulators with an integrated approach to screening and analyzing the financial condition of insurance companies operating in their respective states.

Limited Partnership Agreements—The MidCap Limited Partnership Agreement and the Utility Limited Partnership Agreement.

Limited Partnerships—The MidCap Limited Partnership and the Utility Limited Partnership.

Long-tail—Losses that usually have a longer delay between the occurrence of a loss and the time the loss is reported. Casualty losses are generally longer tailed.

Loss ratio—The ratio, expressed as a percentage, of losses and loss adjustment expenses to net premiums earned.

Loss adjustment expenses—The expenses of settling claims, including legal and other fees, and the portion of general expenses allocated to claim resolution.

Losses and loss adjustment expenses—Liabilities established by insurers to reflect the estimated cost of claims payments that the insurer will ultimately be required to pay with respect to insurance it has written. Reserves are established for losses and for loss adjustment expenses and consist of case reserves and IBNR reserves.

MidCap General Partner—ZP MidCap GP, LLC, a Delaware limited liability company and the general partner of the MidCap Limited Partnership. The MidCap General Partner is an entity affiliated with and controlled by ZFSG.

MidCap Limited Partnership—ZP MidCap Fund, L.P., a Delaware limited partnership. The MidCap Limited Partnership operates as a feeder fund in a “master-feeder” structure, in which the MidCap Limited Partnership invests substantially all of its assets in the Absolute Return MidCap Fund. As of January 1, 2025, the Company and its subsidiaries own 17.1% of the limited partnership interest in the MidCap Limited Partnership.

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MidCap Limited Partnership Agreement—The Amended and Restated Limited Partnership Agreement dated July 1, 2020, among the MidCap General Partner, as general partner, and the other limited partners thereof, to which we and Ategrity Ltd acceded by way of a subscription agreement on January 1, 2025.

National Association of Insurance Commissioners (“NAIC”)—A voluntary organization of state insurance officials that promulgates model laws regulating the insurance industry, values securities owned by insurers, develops and modifies insurer financial reporting statements and insurer performance criteria, and performs other services with respect to the insurance industry.

Net premiums earned—The portion of net written premiums that is recognized for accounting purposes as income during a period.

Net written premiums—Gross written premiums for a given period less premiums ceded to reinsurers during such period.

Non-admitted market—The insurance market of companies not licensed to transact the business of insurance in a particular U.S. jurisdiction. A non-admitted company is permitted to issue insurance policies only in accordance with an exemption from the jurisdiction’s insurance licensing laws, for example, through an E&S lines broker licensed in that jurisdiction, or to issue policies “self-procured” by the insured or its broker from the insurer outside the jurisdiction of the insured.

Probable maximum loss (“PML”)—The maximum amount of loss that we would expect to incur on a policy or collection of policies under ordinary circumstances, based on computer modeling and actuarial techniques.

Productionized Underwriting—Our term for the technology-driven method of standardizing, simplifying, and automating our transaction process.

Reinsurance—The practice whereby one party, called the reinsurer, in consideration of a premium paid to it, agrees to indemnify another party, called the reinsured, for part or all of the liability assumed by the reinsured under a policy or policies of insurance which it has issued. The reinsured may be referred to as the original or primary insurer, the direct writing company or the ceding company.

Reinsurer—An insurer that agrees to indemnify another insurer against all or part of a loss which the latter may incur under a policy or policies it has issued.

Retention—The amount or portion of risk which an insurer or reinsurer retains or assumes for its own account. Losses, or a portion thereof, in excess of the retention level are paid by the reinsurer or a retrocessionaire. In proportional treaties, the retention may be a percentage of the original policy’s limit. In excess of loss business, the retention is a dollar amount of loss, a loss ratio, or a percentage.

Return on members’ equity—Net income attributable to members expressed as a percentage of average beginning and ending members’ equity during the period.

SAP—Those statutory accounting principles and practices which provide the framework for the preparation of insurance company financial statements and the recording of transactions, in accordance with the rules and procedures adopted by regulatory authorities, generally emphasizing solvency considerations rather than a going-concern concept of accounting.

Short-tail—Losses that are usually known and reported within a relatively short period of time after the underlying loss event has occurred. Property losses are generally short tailed.

Soft market—Insurance markets characterized by a stable or excessive supply of underwriting capacity, resulting in flat or declining rates or premiums.

Specialty P&C market—Although no standard definition for the specialty market exists, Standard & Poor’s Ratings Services indicates that the following lines of business or exposure profiles exemplify the space: high-hazard or nonstandard insurance, niche market segments, tailored underwriting, and both admitted and E&S lines.

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Many specialty insurers offer both admitted and E&S products, depending on the market conditions and regulatory requirements. Admitted product rates and policy forms are highly regulated and coverage tends to be standardized, while E&S products and policies have freedom of rate and form and can be highly customized.

Statutory surplus—Total admitted assets less total liabilities, as determined in accordance with SAP.

Submission—An application for insurance coverage received by a direct insurer from a prospective policyholder or its broker acting for consideration in connection with possible issuance of an insurance policy by that insurer.

Underwriting—The insurer’s process of reviewing applications submitted for the insurance coverage, deciding whether to accept all or part of the coverage requested and determining the applicable premiums.

Underwriting expenses—The aggregate of policy acquisition costs, including commissions, and the portion of administrative, general, and other expenses attributable to underwriting operations.

Unearned premiums—The portion of a premium representing the unexpired portion of the contract term as of a certain date.

Utility & Infrastructure Investments—Our managed investments in yield-oriented securities in lower-volatility sectors such as utilities, pipelines, infrastructure, and real estate. These investments currently consist of an allocation to each of the Absolute Return Utility & Infrastructure Fund and the Absolute Return MidCap Fund.

Utility General Partner—ZP Utility Insurance GP, LLC, a Delaware limited liability company and the general partner of the Utility Limited Partnership. The Utility General Partner is an entity affiliated with and controlled by ZFSG.

Utility Limited Partnership—ZP Utility Insurance Fund, L.P., a Delaware limited partnership. The Utility Limited Partnership operates as a feeder fund in a “master-feeder” structure, in which the Utility Limited Partnership invests substantially all of its assets in the Absolute Return Utility & Infrastructure Fund. The Company and its subsidiaries owned 100% of the limited partnership interest in the Utility Limited Partnership.

Utility Limited Partnership Agreement—The Amended and Restated Limited Partnership Agreement dated April 1, 2018, among us, Ategrity Specialty and Ategrity Ltd, as limited partners, and the Utility General Partner.

Wholesale agent—An intermediary who negotiates contracts of insurance between retail agents and insurance companies, receiving a commission for placement and other services rendered.

Wholesale broker—An intermediary who negotiate contracts of insurance between retail agents and brokers and insurance companies, receiving a commission for placement and other services rendered.

ZFSG—Zimmer Financial Services Group LLC, a Delaware limited liability company.

ZIS—Zimmer Insurance Services LLC, a Delaware limited liability company.

ZTG—Zimmer Technology Group LLC, a Delaware limited liability company.

Other considerations

You should rely only on the information contained in this prospectus. We and the underwriters have not authorized anyone to provide you with information different from that contained in this prospectus. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We are offering to sell, and seeking offers to buy, shares of common stock only in jurisdictions where offers and sales are permitted. The information contained in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or of any sale of our shares of common stock. Our business, financial condition, results of operations, and prospects may have changed since that date. Information contained on our website is not part of this prospectus.

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No action is being taken in any jurisdiction outside the United States to permit a public offering of shares of common stock or possession or distribution of this prospectus in that jurisdiction. Persons who come into possession of this prospectus in jurisdictions outside the United States are required to inform themselves about and to observe any restrictions as to this offering and the distribution of this prospectus applicable to that jurisdiction.

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Prospectus summary

This summary highlights information contained elsewhere in this prospectus and does not contain all the information you should consider before making an investment decision. You should read this entire prospectus carefully, including the sections entitled “Risk factors,” “Forward-looking statements,” “Management’s discussion and analysis of financial condition and results of operations,” and our consolidated financial statements and the accompanying notes included elsewhere in this prospectus. References in this prospectus to the “Company,” “Ategrity,” “we,” “us,” and “our” are to Ategrity Specialty Holdings LLC (which will be converted to a Nevada corporation named Ategrity Specialty Insurance Company Holdings prior to the consummation of this offering) and its subsidiaries, unless the context otherwise requires.

Our company

Who we are

We are a profitable and growing specialty insurance company dedicated to providing excess and surplus (“E&S”) products to small to medium-sized businesses (“SMBs”) across the United States. We have built a proprietary underwriting platform that combines sophisticated data analytics with automated and streamlined processes to efficiently serve our clients and deliver long-term value to our stockholders. The SMB market is characterized by large volumes of small-sized policies, and we believe our competitive edge lies in our ability to offer consistent, high-speed, and low-touch interactions that our distribution partners value. This advantage stems from our technology-driven method of standardizing, simplifying, and automating our transaction process, which we call productionized underwriting.

We target industry verticals where we have deep expertise and develop data-driven insights to gain a competitive advantage. We leverage our expertise and our efficient underwriting platform to deliver tailored insurance products and customized services that meet the needs of our distribution partners. We believe the universe of distributors in the SMB segment of the E&S market is rapidly shifting toward agents and brokers who were raised in the digital age. These digital-native and tech-savvy distribution partners expect real-time, frictionless insurance transactions that mirror the seamless experiences they encounter in their daily lives. In an industry where insurance applications are often submitted via email with slow response times, we have designed a technology-driven underwriting process that addresses our distribution partners’ demands for rapid, high-quality interactions. Our strong value proposition has contributed to a growing network of 512 distribution partners as of March 31, 2025, which provides us with increased transaction opportunities and diversified sources of business. Our fully integrated claims management function is designed to enable us to resolve claims efficiently and effectively. We take an active approach to risk management through real-time performance analytics, rigorous risk aggregation monitoring, and robust reinsurance protection aimed at minimizing volatility and generating consistent underwriting results.

We have grown our business substantially while generating attractive underwriting results. For the three months ended March 31, 2025, we wrote $116.1 million in gross written premiums, an increase of $34.5 million, or 42.3% compared to the three months ended March 31, 2024. Our combined ratio for the three months ended March 31, 2025, was 90.9%, a decrease of 3.3% from the three months ended March 31, 2024. Our members’ equity at March 31, 2025, was $426.8 million, an increase of $28.5 million (7.2%) from December 31, 2024. For the twelve months ended March 31, 2025, our return on members’ equity was 12.6%. For the year ended December 31, 2024, we wrote $437.0 million in gross written premiums, representing a compound annual growth rate of 28.4% over the last two years. Our combined ratio for the year ended December 31, 2024, was 93.9%, a decrease of 3.6% from the year ended December 31, 2023. Our members’ equity at December 31, 2024, was $398.3 million, an increase of $76.6 million (23.8%) from December 31, 2023. We believe that our productionized underwriting capabilities will continue to drive enhanced profitability as we continue to scale our business.

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Productionized underwriting

Our company’s mission is to transform the E&S marketplace for SMBs through the power of productionized underwriting with precision, simplicity, and efficiency. When we entered the E&S industry, we found what we believe to be an under-served and inefficient marketplace that was hindered by inconsistent and antiquated processes of legacy insurance carriers. We also believe that many distribution partners and their end-clients were struggling with slow response times, unpredictable underwriting capacity, and subpar pricing, which we believe make the market ripe for technology and efficiency-driven disruption.

To address these challenges, we developed a technology-enabled underwriting process that we believe sets us apart in the E&S market. Our productionized underwriting approach combines rigorous technical underwriting with a highly efficient and centralized operating platform powered by advanced technology. This process begins with a deep understanding of our end-clients, the insurance policyholders. We intensely study the industry and geographical micro-segments in which our end-clients operate using sophisticated data analytics. We leverage these analytics to build quantitative risk models that shape our risk appetite and client targeting.

Furthermore, we aim to eliminate unnecessary complexity by standardizing our processes and automating key underwriting tasks, such as submission intake, risk classification, pricing, and documentation. This allows our underwriters to focus on high-value underwriting tasks and make timely and accurate decisions in a uniform manner. For each individual transaction opportunity, our underwriting models efficiently determine which components of the process can be automated. For simpler products with clearly identified risk characteristics, we can execute the entire underwriting process without human intervention. We believe our productionized underwriting approach generates consistent, efficient, and scalable processes that allow us to deliver differentiated value to our distribution partners without compromising accuracy and profitability.

How We Achieve Productionized Underwriting

[MISSING IMAGE: fc_productunderwrit-4c.jpg]

Our business

We offer property and casualty insurance solutions tailored to meet the needs of SMBs. Currently, the verticals that we focus on are Retail, Real Estate, Hospitality, and Construction. By leveraging deep fundamental research

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and advanced data analytics, we meticulously analyze the universe of potential insureds, stratify their risk characteristics by micro-segments, and quantify the perils they face. Once we have acquired a deep understanding of a specific market, we define target business profiles that match our risk appetite and design products that meet our end-clients’ needs.

For example, in our Hospitality vertical, one area of focus is the hotel and motel industry. We segment this industry into three primary subgroups: luxury hotels, mid-tier hotels, and budget motels. We then identify micro-segments such as boutique hotels, beachfront resorts, economy roadside motels, and extended-stay hotels. Each of these micro-segments presents a distinct risk profile, such as higher exposure to natural disasters for beachfront resorts or increased liability concerns for extended-stay hotels with more prolonged guest interactions. Another example of micro-segmentation in our Hospitality vertical is restaurants, where we classify businesses into casual dining, family restaurants, fine dining, diners, and buffet restaurants, among others. In our Real Estate, Construction and Retail verticals, we also categorize micro-segments based on applicable risk characteristics. We price and design products that are specifically tailored to cover the unique risks associated with each micro-segment. We believe our enhanced micro-segmentation of traditional industry classifications allows us to accurately identify and address homogeneous groups of risk, which provides us with a competitive underwriting advantage.

We offer commercial property, low-limit general liability, and management & professional liability products on both a primary basis and an excess basis. By targeting SMBs, we have built a portfolio of small premium size policies. Furthermore, we deliberately focus on underwriting risks with shorter loss-reporting tails and limited catastrophe risk. This reduces the volatility of our results and strengthens our ability to actively manage business risks. The following charts reflect the percentage of our gross written premiums by duration of risk, products, policy size, and vertical for twelve months ended March 31, 2025(1).

	Premium by Risk Duration(1)			Premium by Product(1)

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	Premium by Policy Size(1)			Premium by Vertical(1)

(1) Based on policies written in twelve months ended March 31, 2025 derived from our internal systems.

We operate on a surplus lines basis in 48 states and the District of Columbia. For the year ended December 31, 2024, there were four states in which 5.0% or more of our gross written premiums were concentrated: California (21.0%), Florida (16.2%), Texas (12.8%), and New York (6.4%).

Our diversified and expansive distribution strategy centers around the principle of giving our distribution partners an efficient, consistent, and simplified way of doing business with us. The key to this is our single appointment contract, which gives our distribution partners access to all our channels, resulting in a greater flow of business per partner. We categorize our products as either Brokerage or Small Business. Brokerage is comprised of medium-sized accounts with limited-to-moderate complexity; Small Business is comprised of more standardized risks with smaller premium amounts and lower policy limits than Brokerage. Although wholesale brokers tend to focus on our Brokerage channel and wholesale agents on our Small Business channel, through our unified contract we can provide distribution partners with access to both, which increases our revenue opportunities. Another pillar of our distribution strategy is our rapid response times, enabled in part by our digital platform. For instance, in our Brokerage channel we use automation and risk-scoring models to accelerate the intake process and route transactions to the most efficient and optimal underwriting method. For our Small Business channel, our distribution partners use our cloud-based underwriting engine that automatically defines and manages data requirements, forms, pricing, and risk appetite.

We partner with technology-forward and innovative distribution partners who are leaders in their respective markets and choose us as their partner in this process. We have significantly invested in gaining access to a broader distribution network, increasing the number of agents and brokerage teams with whom we work from 180 distribution partners as of December 31, 2021 to 512 distribution partners as of March 31, 2025. Our in-house distribution team, which is focused on developing and maintaining our distributor relationships, diligently expands our network by onboarding new distribution partners who have books of business that match our risk appetite. We believe our distribution relationships are highly diversified and less concentrated than our E&S competitors, with the three largest wholesale distribution corporations in the United States representing 48% of our gross written premiums written for the year ended December 31, 2024. The following charts reflect the growth of our distribution partners as of March 31, 2025 and as of December 31 over the last three years, as well as our premiums by distribution channel for twelve months ended March 31, 2025:

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	Number of Distribution Partners			Premium by Channel(1)

(1) Based on policies written in twelve months ended March 31, 2025 derived from our internal systems.

We have a fully integrated internal claims management system that employs proactive strategies to manage claims thoughtfully and efficiently. Our internal claims team consists of specialized and experienced claims professionals, including lawyers, managers, and adjusters. Our claims team leverages our effective technology to process, analyze, and research incoming claims to rapidly determine each claim’s value and resolution path. We seek to settle valid claims expeditiously, but if we believe a claim may be frivolous, we thoroughly investigate it and, if needed, we challenge or litigate it. We use claims roundtables, a curated panel of third-party law firms, expense benchmarking systems, auditing procedures, and precise life-of-claim tracking to optimize outcomes for our insureds and stakeholders. We believe that our holistic and proactive approach, grounded in analytical conviction, allows us to act decisively and protect against inflationary pressures on losses.

We believe having a strong balance sheet is critical for our long-term success and enhancing our partners’ confidence in our business. As such, we have deliberately maintained a conservatively capitalized balance sheet with zero financial leverage, which supports the “A-” (Excellent) financial strength rating from A.M. Best assigned to both Ategrity Specialty and to Ategrity Ltd. Our well-capitalized balance sheet is complemented by rigorous reserve practices. For example, we have minimal exposure to pre-2020 reserves and frequently and proactively review the adequacy of our reserves using various methodologies: daily tracking of claims volumes relative to underlying reserving assumptions, monthly claim-by-claim reserving evaluations, quarterly and year-end studies, quarterly designated committee reviews of actual versus expected losses, and quarterly frequency and severity loss analyses. We also use independent actuaries to assess the strength of our reserves. Given our focus on shorter-tail lines, we believe we have more visibility into claims patterns and the strength of our underlying reserves compared to other specialty peers that have longer tails and less visibility into losses and future claims.

Our business commenced operations in 2018 and we have a limited operating history as a result. See “Risk factors—Risks related to our growth—Our limited operating history makes it difficult to evaluate our current business performance, implementation of our business model and our future prospects.”

Our competitive strengths

Exclusive focus on E&S market, targeting smaller accounts. We operate exclusively in the E&S market, a specialty segment of insurance that has outpaced the growth in the admitted lines market over the last ten years. The E&S market involves lines of insurance which are generally unavailable from admitted insurers due to perceived risk related to the insured’s business and which, consequently, are placed by surplus lines agents or brokers with insurers that are not admitted in the subject jurisdiction. This non-admitted market comprises companies not licensed to transact the business of insurance in a particular U.S. jurisdiction but that are permitted to issue insurance policies only in accordance with an exemption from insurance licensing laws, for example, through an E&S lines broker licensed in that jurisdiction. In contrast to the admitted market, the E&S market provides insurers regulatory flexibility with regard to underwriting standards, forms, and pricing, which we use

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to design optimized product offerings and underwriting strategies. While E&S insurers are often subject to special licensing, surplus lines tax, and/or due diligence requirements by the home state of the insured, they may rely on third-party surplus lines brokers to facilitate compliance with such laws and regulations.

Within the E&S market, we specialize in solving the needs of SMBs in targeted segments or verticals. We believe the SMB segment tends to attract less competition than other segments due to the operational complexities required to efficiently serve this low-premium and high-volume market niche. Brokers and agents operating in this segment demand ease of use, rapid execution, and consistent underwriting capacity from insurers, and we believe we are poised to deliver these on a consistent basis.

Productionized underwriting supported by efficient operating platform. We purposefully built our platform with the holistic goal of productionizing underwriting to efficiently address the unique needs of smaller accounts within the E&S market. We combine deep technical underwriting with a highly efficient operating platform, supported by technology, to make timely, consistent, and precision-oriented underwriting decisions. We achieve this through sophisticated and data-driven risk segmentation and by utilizing meticulously crafted pricing models, thoughtfully designed products, and uniform underwriting guidelines. We aim to accurately and efficiently price risks that are within our risk appetite, rather than customize coverage for risks outside of our segmentation or other risk criteria. We designed and built our operating platform to be highly efficient and scalable. We automate repeatable underwriting tasks, such as submission processing, risk grading, and document generation, so our underwriters can focus on rapidly analyzing individual risks and delivering accurate and timely quotes. For example, our service delivery platform is capable of parsing unstandardized policy submissions by assembling data and applicant information into digital files which are analyzed by our underwriters. We believe our productionized approach to underwriting provides us with a strong competitive advantage to efficiently serve smaller E&S accounts.

Growing and diversified distribution relationships driven by speed, consistency, and ease-of-use. We currently maintain relationships with 512 distribution partners as of March 31, 2025. We believe our distribution relationships are highly diverse and less concentrated than our E&S competitors, with the three largest wholesale distribution corporations in the United States representing 48% of our gross written premiums written for the year ended December 31, 2024. We have significantly grown the number of our distribution relationships from 180 distribution partners as of December 31, 2021 to 512 distribution partners as of March 31, 2025. We can intake a high volume of submissions from our expansive distribution network, evaluate them quickly, and generate bindable quotes on the basis of our consistently defined risk appetite. We believe that our technology-driven approach to distribution is especially attractive to the next generation of innovative and digital-native brokers and agents, who we believe will have a growing presence in the SMB segment of the E&S market.

Fully integrated claims management. We believe that disciplined and efficient claims management is key in maintaining lower loss and loss adjustment ratios. We have built an in-house team of specialized and experienced claims professionals including lawyers, managers, and adjusters. We have built effective processes to identify optimal outcomes as efficiently as possible. Our in-house claims management team enables us to maintain full control over the claims adjustment process from the initial notice of claim to its resolution, allowing us to promptly evaluate incoming claims and swiftly determine the appropriate resolution path. If the claim is valid, we seek to settle it expeditiously. However, if we believe a claim may be frivolous, we thoroughly investigate and, if needed, will challenge or litigate.

Active risk management approach. We believe that active risk management is key to our long-term profitability and success given our focus on underwriting diversified specialized risks. We continuously monitor our aggregate exposures using sophisticated data analytics tools to ensure we are building an appropriately balanced and diversified book of business that is within our risk appetite. Our risk auditing capabilities ensure that we rapidly incorporate any deviations from our loss expectations in our prospective underwriting. We have limited net catastrophe exposure as we actively seek reinsurance protection from highly rated counterparties to manage our aggregated risk exposures and to protect our earnings and balance sheet from potential volatility.

Well-capitalized balance sheet with minimal pre-2020 reserves. We have a conservatively capitalized balance sheet and zero financial leverage which supports the “A-” (Excellent) financial strength rating from A.M. Best

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assigned to both Ategrity Specialty and to Ategrity Ltd. In addition, we have minimal exposure to pre-2020 reserves and have benefited from the current favorable pricing environment. Furthermore, our underwriting strategy focuses on shorter-tail and frequency-driven exposures where claims are reported quickly and are subject to conservative policy limits. Our reserving process is rigorous and has regular reviews of our actuarial estimates in consultation with independent experts. We believe our focus on smaller-account and shorter-tail products helps give us high visibility into, and confidence in, our reserves.

Our strategy

Develop distinguished expertise in our core focus areas. Our strategy begins with developing strong expertise in our targeted classes and geographies within the E&S market. We thoroughly assess and evaluate the unique characteristics and prospective loss costs of each vertical we serve, which enables us to clearly define our risk appetite. We believe our ability to micro-segment our targeted lines of business through data-driven risk modeling allows us to achieve higher-precision underwriting and find attractive opportunities that fit our return expectations and appetite. By gaining deep and data-driven insights, we are able to design tailored insurance solutions that we believe position us as the preferred insurer among our distribution partners in our core focus areas.

Deliver a consistent value proposition to our clients. We attract and retain distribution partners by providing them with a compelling and consistent value proposition. We have designed an intelligent underwriting framework built around a pre-defined client profile and standardized products. By having clearly specified rules and criteria for pre-qualifying risks as well as defined information requirements, we can move swiftly without burdening our clients with excessive information requirements. In addition, our service delivery platform simplifies, streamlines, and automates easily executable underwriting tasks, which contributes to providing a seamless experience for our distribution partners. Moreover, our multi-faceted distribution strategy, which is enabled by a single appointment contract, provides our distribution partners with potential access to all our distribution channels. Our focus on providing broad access with a consistent and high-quality level of service is a key driver of long-lasting relationships with our clients.

Pursue targeted growth initiatives with product, industry, and distribution expansion. We believe we are well-positioned to continue our profitable growth and expand our share of the E&S market through methodical expansion into new products and industry verticals. When we approach a new industry vertical, we typically begin with selective underwriting in the small business market, where we aim to collect a robust dataset that provides us with unique insights on products, pricing, and risk attributes. We follow this by expanding more broadly and repeating the process in the mid-sized business market. In addition to introducing new products and industry verticals, we seek to establish new distribution partnerships with firms that are aligned with our innovative vision and recognize the value of our data-driven and productionized underwriting approach. This will further broaden our market reach and diversify our business sources without compromising profitability.

Continued investment in enhancing our technology to drive innovation and efficiency. We are continuously investing in technology to enhance our underwriting capabilities and interactions with our distribution partners. Innovations in automation, data analytics, and products are directly linked to our mission of delivering high-quality and scalable underwriting and offering unparalleled ease of use. Ategrity Select is our proprietary solution through which we pre-underwrite specific classes of business, enabling our distribution partners to bind quotes in as little as a few minutes. We plan to leverage Ategrity Select to grow into new verticals. Another example is our administration system, AtegrityOne, which is designed to swiftly adapt to change, such as the introduction of new products and pricing, thereby enabling us to provide cost-effective support for new targeted classes with agility and scalability.

Achieve strong returns on capital for our stockholders. Our principal goal is to achieve strong risk-adjusted returns for our stockholders by delivering attractive underwriting results through the cycle. By targeting smaller-account business and leveraging our productionized underwriting approach, we believe we can generate superior underwriting results through market cycles. We use deep data insights to form our own view of risks and

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execute promptly when opportunities arise. We only pursue opportunities that align with our risk appetite and where we expect underwriting profitability to meet or exceed our internal return thresholds.

Investments

We seek to maintain a balanced investment portfolio that produces stable and attractive risk-adjusted returns. We generally aim to match the duration of our fixed income investment portfolio to the duration of our insurance liabilities, with a large portion of the portfolio allocated to maintaining sufficient readily available funds to pay claims and expenses.

Our portfolio is primarily composed of cash and cash equivalents and investment-grade fixed income securities, supplemented by our Utility & Infrastructure Investments. These investments currently consist of an allocation to the Absolute Return Utility & Infrastructure Fund, which is managed by our affiliate, the Investment Manager, and which employs a long/short strategy that seeks to deliver uncorrelated, absolute returns in all market conditions, primarily through investments in yield-oriented securities in lower-volatility sectors such as utilities, pipelines, infrastructure, and real estate. We believe that by allocating a portion of our assets to Utility & Infrastructure Investments, we can achieve more consistent total returns in our aggregate portfolio, particularly in a market environment characterized by increasing volatility in interest rates and security prices, as seen in recent years. For example, as a result of its focus on lower-volatility sectors and disciplined risk management, the Absolute Return Utility & Infrastructure Fund has not experienced an annual loss in over 25 years. Nonetheless, the Utility & Infrastructure Investments are speculative, entail substantial risks, and are subject to various conflicts of interest. For example, the Utility & Infrastructure Investments are made through various commingled investment vehicles that are managed on behalf of multiple clients of the Investment Manager, and while we think the strategy is well matched for our investment objectives, it was not specifically designed for our financial objectives or anticipated insurance and reinsurance liabilities. See “Risk Factors—Risks related to our investment strategy”.

On March 31, 2025, Ategrity Specialty Holdings LLC and Ategrity Ltd redeemed an aggregate of $94 million from the Absolute Return Utility & Infrastructure Fund and on March 31, 2025, Ategrity Specialty Holdings LLC and Ategrity Ltd, as lenders, executed a Loan Agreement that was amended and restated on April 5, 2025 (the “ZIS Loan”) with ZIS, an employee benefits company that is wholly owned by ZFSG, as the borrower and a Guarantee and Pledge Agreement with ZFSG (the “Guaranty”). The ZIS Loan is guaranteed by ZFSG and secured by the shares ZFSG holds in ZIS and 1,500,588 shares of our common stock held by ZFSG. See “Certain relationships and related party transactions—Related Party Loan.” The ZIS Loan provides for a fixed interest rate of 5.5%, payable annually in cash. As of March 31, 2025, after giving effect to the ZIS Loan and the AtegrityOne Transaction, and assuming the proceeds from this offering are invested in fixed income securities (using an assumed initial public offering price of $15.00 per share, which is the midpoint of the range we show on the cover of this prospectus), approximately 19.1% of our portfolio assets will be allocated to the Utility & Infrastructure Investments and the remainder will be invested in fixed-rate investments, including the ZIS Loan, or cash and cash equivalents. The purpose of our entry into the ZIS Loan is to replace the variable income from the Absolute Return Utility & Infrastructure Investments Fund with fixed income in the form of the ZIS Loan. For a description of the risks associated with the ZIS Loan, see “Risk Factors—Risks related to our investment strategy—The ZIS Loan is a Related Party Transaction and is subject to the credit risk of an investment in ZIS and ZFSG.”

Summary of risk factors

Investing in our common stock involves substantial risk. The risks described under the heading “Risk factors” immediately following this summary may cause us to not realize the benefits of our strengths or may cause us to be unable to successfully execute all or part of our strategy. Some of the more significant risks include:

•

If we are unable to underwrite risks accurately and charge competitive yet profitable rates to our policyholders, our business, financial condition, and results of operations will be adversely affected.

•

Competition for business in our industry is intense.

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We may be unable to obtain reinsurance coverage at reasonable prices or on terms that adequately protect us.

•

We are subject to reinsurance counterparty credit risk.

•

Our loss reserves may be inadequate to cover our actual losses, which could have an adverse effect on our financial condition, results of operations, and cash flows.

•

Given the inherent uncertainty of models, the usefulness of such models as a tool to evaluate risk is subject to a high degree of uncertainty that could result in actual losses that are materially different than our estimates. A deviation from our loss estimates may adversely impact, perhaps significantly, our financial results.

•

A decline in the financial strength rating or financial size category assigned to Ategrity Specialty or to Ategrity Ltd may adversely affect the amount of business we write and thus our business, financial condition, and results of operation.

•

We rely on a select group of brokers, and such relationships may not continue.

•

Because our business depends on wholesale agents and brokers, we are exposed to certain risks arising out of our reliance on these distribution channels that could adversely affect our results.

•

Unexpected changes in the interpretation of our coverage or provisions, including loss limitations and exclusions, in our policies could have an adverse effect on our business, financial condition, and results of operations.

•

Our failure to accurately pay claims in a timely manner and to monitor and detect fraud could adversely affect our business, financial condition, results of operations, and prospects.

•

Adverse economic factors, including recession, inflation, periods of high unemployment, or lower economic activity could result in the sale of fewer policies than expected or an increase in frequency or severity of claims and premium defaults, and even the falsification of claims, or a combination of these effects, which, in turn, could affect our growth and profitability.

•

The insurance business is historically cyclical in nature, and we believe we are currently experiencing a relatively hard market cycle, which may affect our financial performance and cause our results of operation to vary from quarter to quarter and may not be indicative of future performance.

•

We are subject to extensive regulation, which may adversely affect our ability to achieve our business objectives. In addition, if we fail to comply with these regulations, we may be subject to penalties, including fines and suspensions, which may adversely affect our financial condition and results of operations.

•

Our business, prospects, financial condition, or results of operations may be adversely affected by the performance of our investment portfolio or reductions in the aggregate value of our investment portfolio.

•

Our investment portfolios and their performance substantially depend on the ability the Investment Manager to select and manage appropriate investments.

•

We have identified a material weakness in our internal control over financial reporting. We may be unable to remediate this material weakness, identify additional material weaknesses or fail to achieve and maintain effective internal control over financial reporting as a public company.

Our structure

We are the 100% owner of Ategrity Specialty, which is a Delaware-domiciled insurance company that writes excess and surplus lines insurance in the United States. We are also the 100% owner of our direct subsidiary, Ategrity Specialty Holdings Limited, which is the 100% owner of Ategrity Ltd, a provider of specialty property and casualty reinsurance products to Ategrity Specialty.

The chart below displays our simplified corporate structure, after giving effect to this offering:

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Corporate information

Our address is 9 West 57th Street, 33rd Floor, New York NY 10019 and our telephone number is (212) 509-1600. Our website is https://ategrity.com. The information on our website is not part of this prospectus.

Implications of being an emerging growth company

As a company with less than $1.235 billion in revenue during our last fiscal year, we qualify as an “emerging growth company” as defined in the Jumpstart Our Business Startups Act (the “JOBS Act”), enacted in April 2012. An emerging growth company may take advantage of reduced reporting requirements that are otherwise applicable to public companies. These provisions include, but are not limited to:

•

being permitted to present only two years of audited financial statements and only two years of related disclosure in our “Management’s discussion and analysis of financial condition and results of operations” in our periodic reports and registration statements, including this prospectus;

•

not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, as amended (the “Sarbanes-Oxley Act”);

•

reduced disclosure obligations regarding executive compensation in our periodic reports, proxy statements, and registration statements, including this prospectus; and

•

exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved.

We may take advantage of these provisions until the last day of our fiscal year following the fifth anniversary of the date of the first sale of our common equity securities pursuant to an effective registration statement under the Securities Act. Such fifth anniversary will occur in 2030. However, if certain events occur prior to the end of such five-year period, including if we become a “large accelerated filer,” our gross revenues for any fiscal year

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equal or exceed $1.235 billion or we issue more than $1.0 billion of non-convertible debt in any three-year period, we will cease to be an emerging growth company prior to the end of such five-year period.

We have elected to take advantage of certain of the reduced disclosure obligations in this prospectus and may elect to take advantage of other reduced reporting requirements in our future filings with the SEC. As a result, the information that we provide to our stockholders may be different than what you might receive from other public reporting companies in which you hold equity interests.

We have elected to avail ourselves of the provision of the JOBS Act that permits emerging growth companies to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. As a result, we will not be subject to new or revised accounting standards at the same time as other public companies that are not emerging growth companies.

For additional information, see “Risk factors—Risks related to this offering and ownership of our common stock—We qualify as an emerging growth company, and any decision on our part to comply with reduced reporting and disclosure requirements applicable to emerging growth companies could make our common stock less attractive to investors.”

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The offering

Common stock offered by us in this offering

6,666,667 shares (or 7,666,667 shares if the underwriters exercise their option to purchase additional shares in full).

Common stock to be outstanding immediately after this offering

47,066,674 shares (or 48,066,674 shares if the underwriters exercise their option to purchase additional shares in full).

Underwriters’ option to purchase additional shares

The underwriters have an option for a period of 30 days from the date of this prospectus to purchase up to an additional 1,000,000 shares of our common stock to cover over-allotments.

Use of proceeds

We estimate that the net proceeds to us from this offering will be approximately $86.2 million (or approximately $100.1 million if the underwriters exercise their option to purchase additional shares in full), after deducting underwriting discounts and commissions and estimated offering expenses payable by us, based on an assumed initial public offering price of $15.00 per share, which is the midpoint of the price range set forth on the cover page of this prospectus.

The principal purposes of this offering are to increase our capitalization and financial flexibility and to create a public market for our common stock. We intend to use the net proceeds from this offering as capital to grow our business and for other general corporate purposes. We initially intend to invest such net proceeds in fixed income securities. See “Use of proceeds.”

Controlled Company

Upon completion of this offering, ZFSG will continue to own more than a majority of the voting power of our shares of common stock entitled to vote in the election of our directors. As a result, we will be a “controlled company” as defined under the corporate governance rules of the NYSE and will be exempt from certain corporate governance requirements of such rules. ZFSG and its affiliates will also be able to exert significant influence over the vote in any election of directors and any amendment of our charter. See “Risk factors—Risks related to this offering and ownership of our common stock—We will be a “controlled company” within the meaning of the rules of the NYSE and, as a result, will qualify for, and rely on, exemptions from certain corporate governance requirements. You will not have the same protections afforded to stockholders of companies that are subject to such requirements”, “Risk factors—Risks related to this offering and ownership of our common stock—ZFSG and its affiliates will be able to exert significant influence over us and our corporate decisions”, and “Management—Director independence and controlled company exemption.”

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Dividend policy

We do not anticipate paying any dividends in the foreseeable future. Any determination to pay dividends or other distributions in the future will be at the discretion of our board of directors, subject to applicable laws. The ability of our insurance or reinsurance subsidiaries to pay dividends to us is subject to limits under insurance laws of the state or foreign jurisdiction in which Ategrity Specialty or Ategrity Ltd is domiciled. See “Dividend policy.”

Listing

We have applied to list our common stock on the NYSE, under the symbol “ASIC.”

Risk factors

You should read the “Risk factors” section beginning on page 19 of this prospectus for a discussion of factors to carefully consider before deciding to invest in shares of our common stock.

Directed share program

At our request, the underwriters have reserved for sale, at the initial public offering price, up to 7% of the shares offered by this prospectus, excluding the additional shares that the underwriters have an option to purchase, for sale to certain of our employees, certain of our directors and certain other parties. The number of shares of common stock available for sale to the general public will be reduced to the extent these individuals purchase such reserved shares. Any reserved shares that are not so purchased will be offered by the underwriters to the general public on the same basis as the other shares offered by this prospectus. J.P. Morgan Securities LLC will administer our directed share program. See “Underwriting—Directed Share Program.”

Unless otherwise indicated and except for our historical consolidated financial information and our historical consolidated financial statements and related notes included elsewhere in this prospectus, the information in this prospectus:

•

reflects a 0.0937868-for-1 conversion of each of the outstanding units of Ategrity Specialty Holdings LLC in connection with the Corporate Conversion (as defined herein) on the date of this prospectus following the effectiveness of the registration statement;

•

assumes the effectiveness of (or the effective time of) the filing of our articles of conversion containing our articles of incorporation with the Nevada Secretary of State and the adoption of our bylaws in connection with the consummation of the offering;

•

assumes that the initial public offering price of the common stock will be $15.00 per share, which is the midpoint of the range we show on the cover of this prospectus; and

•

assumes no exercise by the underwriters of their option to purchase up to an additional 1,000,000 shares.

In addition, except as otherwise indicated, all information contained in this prospectus relating to the number of shares of common stock to be outstanding reflects 47,066,674 shares outstanding immediately after this offering, after giving effect to the sale of 6,666,667 shares in this offering, and excludes:

•

an aggregate of 1,079,605 shares of common stock issuable upon the exercise of Tranche 1 warrants held by ZFSG with an exercise price of approximately $31.99 per share;

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•

An aggregate of 375,147 shares of common stock issuable upon the exercise of Tranche 2 warrants held by ZFSG with an exercise price of approximately $21.32 per share;

•

an aggregate of 4,339,808 shares of common stock issuable upon the exercise of options outstanding under our Equity Incentive Plan, effective as of February 5, 2019 and amended as of January 1, 2024 (the “2019 Plan”) with a weighted average exercise price of $11.94 per share, as of March 31, 2025;

•

an aggregate of 268,292 shares of common stock reserved for issuance under the 2025 Incentive Plan (the “2025 Plan”), that will become effective in connection with this offering;

•

an aggregate of 10,000 shares of common stock (based on an assumed initial public offering price of $15.00 per share, which is the midpoint of the price range set forth on the cover page of this prospectus) issuable upon vesting of restricted stock units expected to be granted to certain of our directors in connection with this offering under the 2025 Plan; and

•

the 2025 Plan also provides for automatic annual increases in the number of shares reserved thereunder.

See “Executive and director compensation—Equity incentive plans” for more information.

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Summary consolidated financial and other data

The following tables present our summary consolidated financial and other data, at the dates and for the periods indicated. The summary condensed consolidated financial and other data for the three months ended March 31, 2025 and 2024, and the condensed consolidated balance sheet data as of March 31, 2025, have been derived from our unaudited condensed consolidated financial statements, included elsewhere in this prospectus. The summary consolidated financial and other data set forth below as of and for the years ended December 31, 2024 and 2023 have been derived from our consolidated financial statements, included elsewhere in this prospectus.

These historical results are not necessarily indicative of the results that may be expected for any future period. The following information is only a summary and should be read in conjunction with the section entitled “Management’s discussion and analysis of financial condition and results of operations” and our consolidated financial statements and the accompanying notes included elsewhere in this prospectus.

Unless specified otherwise, all shares of common stock, equity awards and per-share data included in this prospectus give effect to the Corporate Conversion and have been adjusted retroactively for all periods presented and may be rounded to the closest share for presentation purposes. The financial statements and the related notes thereto included elsewhere in this prospectus, including the unit and per unit information, are presented only on a historical basis and therefore do not reflect the Corporate Conversion or any of the other transactions described herein.

	Three months ended March 31,						Year ended December 31,
($ in thousands, except percentages)	2025			2024			2024			2023
Revenues:
Gross written premiums		$	116,143		$	81,605		$	437,036		$	352,591
Ceded written premiums			(26,272)			(19,349)			(137,830)			(84,375)
Net written premiums			89,871			62,256			299,206			268,216
Net premiums earned			78,301			68,278			290,635			231,464
Fee income			560			125			918			660
Net investment income			7,895			5,253			24,046			11,366
Net realized and unrealized gains (losses) on investments			(4,599)			2,388			28,140			(2,269)
Other income			965			24			95			95
Total revenues			83,122			76,068			343,834			241,316
Expenses:
Losses and loss adjustment expenses		$	46,862		$	41,047		$	175,234		$	154,107
Underwriting, acquisition and insurance expenses			24,885			23,389			98,567			72,155
Interest expense(1)			447			550			2,042			2,237
Other expenses			238			54			1,727			196
Total expenses			72,432			65,040			277,570			228,695
Income before income taxes			10,690			11,028			66,264			12,621
Income tax expense			2,240			2,070			12,316			2,518
Net income			8,450			8,958			53,948			10,103
Less: Net income (loss) attributable to non-controlling interest–General Partner			(11)			1,202			6,858			55
Net income attributable to members		$	8,461		$	7,756		$	47,090		$	10,048

(1) Consists of fees on our letter of credit agreements. See “Management’s discussion and analysis of financial condition and results of operations— Liquidity and capital resources.”

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Selected balance sheet data:

	As of March 31,			As of December 31,
($ in thousands, except percentages)	2025			2024			2023
Investments, cash and cash equivalents		$	739,314		$	788,459		$	617,585
Premiums receivable, net			54,991			53,500			49,103
Deferred policy acquisition costs, net			24,684			21,552			23,245
Reinsurance recoverable, net			135,239			133,616			125,671
Ceded unearned premiums			60,628			68,205			37,852
Total assets			1,148,042			1,123,438		$	882,042
Reserves for unpaid losses and loss adjustment expenses		$	421,478		$	403,576		$	320,936
Unearned premiums			216,821			212,828			173,905
Payable to reinsurers			19,553			27,160			15,669
Total liabilities		$	720,736		$	724,631		$	559,845
Total members’ equity		$	426,817		$	398,307		$	321,697

Key Operating and Financial Metrics:

	Three months ended March 31,						Year ended December 31,
($ in thousands, except percentages)	2025			2024			2024			2023
Loss ratio(1)	59.8%			60.1%			60.3%			66.6%
Expense ratio(2)	31.1%			34.1%			33.6%			30.9%
Combined ratio(3)	90.9%			94.2%			93.9%			97.5%
Return on members’ equity(4)	8.2%			9.5%			13.1%			3.4%
Other Data/Non-GAAP Metrics:
Underwriting income(5)		$	7,114		$	3,967		$	17,752		$	5,862
Adjusted net income attributable to members(6)		$	8,542		$	7,756		$	48,266		$	10,048
Adjusted return on members’ equity(4)(7)	8.3%			9.5%			13.4%			3.4%

(1) The loss ratio is the ratio, expressed as a percentage, of losses and loss adjustment expenses to net premiums earned.

(2) The expense ratio is the ratio, expressed as a percentage, of underwriting, acquisition, and insurance expenses less fee income to net premiums earned.

(3) The combined ratio is the sum of the loss ratio and the expense ratio.

(4) For the three months ended March 31, 2025 and 2024, net income attributable to members and adjusted net income attributable to members are annualized to arrive at return on members’ equity and adjusted return on members’ equity.

(5) Underwriting income is a non-GAAP financial measure. See “Management’s discussion and analysis of financial condition and results of operations—Reconciliation of non-GAAP financial measures” for a reconciliation of underwriting income to income before income taxes.

(6) Adjusted net income attributable to members is a non-GAAP financial measure. See “Management’s discussion and analysis of financial condition and results of operations—Reconciliation of non-GAAP financial measures” for a reconciliation of adjusted net income attributable to members to net income attributable to members.

(7) Adjusted return on members’ equity is a non-GAAP financial measure. See “Management’s discussion and analysis of financial condition and results of operations—Reconciliation of non-GAAP financial measures” for a reconciliation of adjusted return on members’ equity to return on members’ equity.

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	Three months ended March 31,						Year ended December 31,
($ in thousands, except percentages and share or unit counts)	2025			2024			2024			2023
Per Unit Information:
Net income attributable to members’ units		$	8,166		$	7,756		$	46,730		$	10,048
Earnings per unit: Basic			0.02			0.02			0.12			0.03
Diluted			0.02			0.02			0.12			0.03
Weighted average units used in computing earnings per unit:
Basic			429,573,467			386,397,466			390,738,224			349,938,678
Diluted			436,085,672			386,400,736			390,756,416			349,948,799
As adjusted net income attributable to common stockholders(1)			8,166
As adjusted earnings per share attributable to common stock:(1)
Basic			0.20
Diluted			0.20
As adjusted weighted average shares used in computing earnings per share:(1)
Basic			40,288,309
Diluted			40,899,068
Pro forma net income attributable to common stockholders(2)			8,106
Pro forma earnings per share attributable to common stock:(2)
Basic			0.17
Diluted			0.17
Pro forma weighted average shares used in computing earnings per share:(2)
Basic			46,954,976
Diluted			48,157,634

(1) As adjusted net income attributable to stockholders, as adjusted earnings per share attributable to common stock and as adjusted weighted average shares used in computing earnings per share each give effect to (a) the 0.0937868-for-1 conversion of each of the outstanding units of Ategrity Specialty Holdings LLC in connection with the Corporate Conversion, (b) the filing of our articles of conversion containing our articles of incorporation with the Nevada Secretary of State and the adoption of our bylaws in connection with the consummation of the offering, each of which will occur following the effectiveness of the registration statement and prior to the completion of this offering, as if each had occurred on January 1, 2025.

(2) Pro forma net income attributable to stockholders, pro forma earnings per share attributable to common stock and pro forma weighted average shares used in computing earnings per share each give effect to the issuance of 6,666,667 shares in this offering at an initial public offering price of $15.00 per share, which is the midpoint of the range set forth on the cover of this prospectus and the application of the net proceeds therefrom, as if each had occurred on January 1, 2025. See “Capitalization” and “Use of proceeds.”

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The following is a reconciliation of historical net income attributable to members to pro forma net income attributable to stockholders for the three months ended March 31, 2025:

($ in thousands, except per share data)	Three months ended March 31, 2025
Net income attributable to members’ units as reported		$	8,166
Increase in share-based payments to stockholders(a)			60
Pro forma net income attributable to stockholders(b)			8,106
Pro forma weighted average shares used in computing earnings per share:(c)
Basic			46,954,976
Diluted			48,157,634
Pro forma earnings per share attributable to common stock:
Basic			0.17
Diluted			0.17

(a) Reflects an increase in expenses related to share-based payments as options granted under our equity compensation plans vest upon the occurrence of an exit event, such as an initial public offering, as if such condition had occurred on January 1, 2025.

(b) Pro forma net income does not reflect any portion of offering expenses to be incurred that may not be capitalized subsequent to the period presented.

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Risk factors

Investing in our common stock involves a high degree of risk. You should carefully consider the risks and uncertainties described below, together with all of the other information in this prospectus, before deciding to invest in our common stock. The risks and uncertainties described below are not the only ones facing us. There may be additional risks and uncertainties of which we currently are unaware or currently believe to be immaterial. The occurrence of any of these risks could materially and adversely affect our business, financial condition, liquidity, results of operations, or prospects. In that event, the market price of our common stock could decline, and you could lose all or part of your investment.

Risks related to our business and industry

In general, the premiums for our insurance policies are established at the time a policy is issued and, therefore, before all of our underlying costs are known. Like other insurance companies, we rely on estimates and assumptions in setting our premium rates. Establishing adequate premium rates is necessary, together with investment income, to generate sufficient revenue to offset losses, loss adjustment expenses, and other underwriting costs and to earn a profit. If we do not accurately assess the risks that we assume, we may not charge adequate premiums to cover our losses and expenses, which would adversely affect our results of operations and our profitability. Alternatively, we could set our premiums too high, which could reduce our competitiveness and lead to lower revenues.

Pricing involves the acquisition and analysis of historical loss data and the projection of future trends, loss costs and expenses, and inflation trends, among other factors, for each of our products in multiple risk tiers and many different markets. In order to accurately price our policies, we must:

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collect and properly analyze a substantial volume of data from our insureds;

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develop, test, and apply appropriate actuarial projections and ratings formulas;

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closely monitor and timely recognize changes in trends; and

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project both frequency and severity of our insureds’ losses with reasonable accuracy.

We seek to implement our pricing accurately in accordance with our assumptions. Our ability to undertake these efforts successfully and, as a result, accurately price our policies, is subject to a number of risks and uncertainties, including:

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insufficient or unreliable data;

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incorrect or incomplete analysis of available data;

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uncertainties generally inherent in estimates and assumptions;

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our failure to implement appropriate actuarial projections and ratings formulas or other pricing methodologies;

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regulatory constraints on rate increases;

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our failure to accurately estimate investment yields and the duration of our liability for loss and loss adjustment expenses; and

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unanticipated court decisions, legislation, or regulatory action.

Competition for business in our industry is intense.

We face competition from other specialty insurance companies, standard insurance companies, and underwriting agencies, as well as from diversified financial services companies that are larger than we are and that have greater financial, marketing, and other resources than we do. Some of these competitors also have longer experience and more market recognition than we do in certain lines of business. In addition, it may be difficult or

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prohibitively expensive for us to implement technology systems and processes that are competitive with the systems and processes of these larger companies.

In particular, competition in the insurance industry is based on many factors, including price of coverage, the general reputation and perceived financial strength of the company, relationships with brokers, terms and conditions of products offered, ratings assigned by independent rating agencies, including any downgrades, withdrawal of ratings, or negative watch/outlooks, speed of claims payment and reputation, and the experience and reputation of the members of our underwriting team in the particular lines of insurance and reinsurance we seek to underwrite. See “Business—Competition.” In recent years, the insurance industry has undergone increasing consolidation, which may further increase competition. In particular, private equity sponsors have invested significantly into the insurance sector, and such investments may provide additional capital to our competitors. New competitors, whether newly formed insurers or competitors resulting from alliances or mergers among existing competitors, could emerge and gain significant market share, and some of our competitors may have or may develop a lower cost structure, adopt more aggressive pricing policies or provide services that gain greater market acceptance than the services that we offer or develop. Competitors may be able to respond to the need for technological changes and innovate faster, or price their services more aggressively. They may also compete for skilled professionals, finance acquisitions, fund internal growth, and compete for market share more effectively than we do.

A number of new, proposed, or potential legislative or industry developments could further increase competition in our industry. For example, there has been an increase in capital-raising by companies with whom we compete, which could result in new entrants to our markets and an excess of capital in the industry. Additionally, the possibility of federal regulatory reform of the insurance industry could increase competition from standard carriers.

We may not be able to continue to compete successfully in the insurance markets. Increased competition in these markets could result in a change in the supply and demand for insurance, affect our ability to price our products at risk-adequate rates, and retain existing business, or underwrite new business on favorable terms. If this increased competition so limits our ability to transact business, our business, financial condition, and our results of operation could be adversely affected.

We may be unable to obtain reinsurance coverage at reasonable prices or on terms that adequately protect us.

We use reinsurance to help manage our exposure to insurance risks. Reinsurance is a practice whereby one insurer, called the reinsurer, agrees to indemnify another insurer, called the ceding insurer, for all or part of the potential liability arising from one or more insurance policies issued by the ceding insurer. The availability and cost of reinsurance are subject to prevailing market conditions, both in terms of price and available capacity, which can affect our business volume and profitability. In addition, reinsurance programs are generally subject to renewal on an annual basis. We may not be able to obtain reinsurance on acceptable terms or from entities with satisfactory creditworthiness. In addition to using external reinsurers, we primarily use Ategrity Ltd, to reinsure our products. As of March 31, 2025, 80% of Ategrity Specialty’s net written premium was ceded via a quota share arrangement to Ategrity Ltd. If we are unable to obtain new reinsurance facilities or to renew expiring facilities, our net exposures would increase. In such event, if we are unwilling to bear an increase in our net exposure, we would have to reduce the level of our underwriting commitments, which would reduce our revenues.

Many reinsurance companies have begun to exclude certain coverages from, or alter terms in, the reinsurance contracts we enter into with them. Some exclusions are with respect to risks that we cannot exclude in policies we write due to business or regulatory constraints. In addition, reinsurers are imposing terms, such as lower per occurrence and aggregate limits, on direct insurers that do not wholly cover the risks written by these direct insurers. As a result, we, like other direct insurance companies, write insurance policies which to some extent do not have the benefit of reinsurance protection. These gaps in reinsurance protection expose us to greater risk and greater potential losses. We may also write risks that do not fall within the coverage provided by our reinsurance contracts, or we may purchase types of reinsurance that inadequately cover our risks, and in such an event, we may be exposed to greater risk and greater potential losses. See also “Business—Reinsurance.”

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We are subject to reinsurance counterparty credit risk.

The reinsurance contracts that we enter into to help manage our risks require us to pay premiums to the reinsurance carriers who will in turn reimburse us for a portion of covered policy claims. In many cases, a reinsurer will be called upon to reimburse us for policy claims many years after we paid insurance premiums to the insurer. Although reinsurance makes the reinsurer liable to us to the extent the risk is transferred or ceded to the reinsurer, it does not relieve us (the ceding insurer) of our primary liability to our policyholders. Our current reinsurance program is designed to limit our financial risk. Our reinsurers may not pay claims made by us on a timely basis, or they may not pay some or all of these claims. For example, reinsurers may default in their financial obligations to us as the result of insolvency, lack of liquidity, operational failure, fraud, asserted defenses based on agreement wordings or the principle of utmost good faith, asserted deficiencies in the documentation of agreements, or other reasons. Any disputes with reinsurers regarding coverage under reinsurance contracts could be time-consuming, costly, and uncertain of success. We evaluate each reinsurance claim based on the facts of the case, historical experience with the reinsurer on similar claims and existing case law and include any amounts deemed uncollectible from the reinsurer in our reserve for uncollectible reinsurance. As of March 31, 2025, we had $135.2 million of reinsurance recoverable, net of allowance for credit losses of $0. These risks could cause us to incur increased net losses, and, therefore, adversely affect our business and financial condition.

Our loss reserves may be inadequate to cover our actual losses, which could have an adverse effect on our financial condition, results of operations, and cash flows.

Our success depends on our ability to accurately assess the risks related to the businesses and people that we insure. We establish reserves for losses and loss adjustment expenses for the best estimate of the ultimate payment of all claims that have been incurred, or could be incurred in the future, and the related costs of adjusting those claims, as of the date of our consolidated financial statements. Reserves do not represent an exact calculation of liability. Rather, reserves represent an estimate of what we expect the ultimate settlement and administration of claims will cost us, and our ultimate liability may be greater or less than our estimate.

As part of the reserving process, we review historical data and consider the impact of such factors as:

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claims inflation, which is the sustained increase in cost of raw materials, labor, medical services, and other components of claims cost;

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claims development patterns by line of business and by “claims made” versus “occurrence” policies;

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pricing for our products;

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legislative activity;

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social and economic patterns; and

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litigation, judicial, and regulatory trends.

These variables are affected by both internal and external events that could increase our exposure to losses, and we continually monitor our reserves using new information on reported claims and a variety of statistical techniques and modeling simulations. This process assumes that past experience, adjusted for the effects of current developments and anticipated trends, is an appropriate basis for predicting future events. There is, however, no precise method for evaluating the impact of any specific factor on the adequacy of reserves, and actual results may deviate, perhaps substantially, from our reserve estimates. Furthermore, our business has been and will continue to be subject to change as we grow and introduce new product lines. If our overall product mix changes significantly from what it has been in the past, the historical information and data we rely on for purposes of making decisions with respect to our reserve practices may not represent our current product mix or claims environment, and such information may cause our reserves to be inadequate as a result.

The following uncertainties may also have an impact on the adequacy of our resources:

•

When we write “occurrence” policies, we are obligated to pay covered claims, up to the contractually agreed amount, for any covered loss that occurs while the policy is in force even if such claims are only brought after

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the policy has lapsed. Accordingly, claims may arise many years after a policy has lapsed. Nearly all of our net casualty loss reserves were associated with “occurrence” policies as of March 31, 2025.

•

When a claim is received (irrespective of whether the policy is a “claims made” or “occurrence” basis form), it may take considerable time to fully appreciate the extent of the covered loss suffered by the insured and, consequently, estimates of loss associated with specific claims can increase over time.

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New theories of liability are enforced retroactively from time to time by courts.

•

Volatility in the financial markets, economic events, and other external factors may result in an increase in the number of claims and severity of the claims reported. In addition, elevated inflationary conditions would, among other things, cause loss costs to increase. See also “—Adverse economic factors, including recession, inflation, periods of high unemployment, or lower economic activity could result in the sale of fewer policies than expected or an increase in frequency or severity of claims and premium defaults, and even the falsification of claims, or a combination of these effects, which, in turn, could affect our growth and profitability.”

•

If claims were to become more frequent, even if we had no liability for those claims, the cost of evaluating such potential claims could escalate beyond the amount of the reserves we have established. As we enter new lines of business, or as a result of new theories of claims, we may encounter an increase in claims frequency and greater claims handling costs than we had anticipated.

In addition, there may be significant reporting lags between the occurrence of the insured event and the time it is actually reported to us and additional lags between the time of reporting and final settlement of any claims. Consequently, estimates of loss associated with specified claims can increase as new information emerges, which could cause the reserves for the claim to become inadequate.

If any of our reserves should prove to be inadequate, we will be required to increase our reserves resulting in a reduction in our net income and stockholders’ equity in the period in which the deficiency is identified. Future loss experience substantially in excess of established reserves could also have an adverse effect on our future earnings and liquidity and our financial rating. See “Management’s discussion and analysis of financial condition and results of operations—Critical accounting policies and estimates—Reserves for unpaid losses and loss adjustment expenses.”

Our approach to risk management relies on subjective variables that entail significant uncertainties. In addition, we and the Investment Manager rely on historical data and scenarios in managing credit and interest rate risks in our investment portfolio. Estimates, models, data, and scenarios that are utilized may not produce accurate predictions and consequently, we could incur losses both in the risks we underwrite and to the value of our investment portfolio.

We use analytics and models to provide us with objective risk assessment relating to our portfolio of insurance risks, some of which relies on third-party vendor’s capabilities. We use these models to help us measure and control risk accumulation, to inform management and other stakeholders of capital requirements, to improve the risk/return profile of our insurance portfolio, and to design our reinsurance structure and assess the optimal amount of reinsurance to purchase. Given the inherent uncertainty of modeling techniques and the application of such techniques, however, these models and databases may not accurately address a variety of matters which might impact certain of our coverages.

Small changes in assumptions, which depend heavily on our judgment and foresight, can have a significant impact on the modeled outputs. These assumptions address a number of factors that impact loss potential and these factors vary considerably across lines of business. Examples include, but are not limited to business class, industry classifications, or areas of practice or operations; company financial condition; stock price volatility; insured investment strategies; company policies and procedures; distribution and volatility of expected claim

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amounts; future trends in claim severity and frequency; expected development of historical paid and reported claims; and regulatory and judicial environment associated with insured location or venue. Furthermore, there are risks which are either poorly represented or not represented at all by our models. Each modeling assumption or un-modeled risk introduces uncertainty into our estimates that management must consider. These uncertainties can include, but are not limited to, the following:

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the models do not address all the possible hazard characteristics;

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the models may not accurately represent loss potential to insurance or reinsurance contract coverage limits, terms, and conditions; and

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the models may not accurately reflect the impact on the economy of the area affected or the financial, judicial, political or regulatory impact on insurance claim payments.

The outputs from the models and other tools we use, together with other qualitative and quantitative assessments, are used in our underwriting process to evaluate risk. Our methodology for estimating losses may differ from methods used by other companies and external parties given the various assumptions and judgments required.

As a result of these factors and contingencies, our reliance on assumptions, tools, and data we use is subject to a high degree of uncertainty that could result in actual losses that are materially different from our estimates and our financial results could be adversely affected.

Participants in the insurance industry use ratings from independent ratings agencies, such as A.M. Best, as an important means of assessing the financial strength and quality of insurers. In setting its ratings, A.M. Best uses a quantitative and qualitative analysis of a company’s balance sheet strength, operating performance and business profile. This analysis includes comparisons to peers and industry standards as well as assessments of operating plans, philosophy, and management. A.M. Best financial strength ratings range from “A++” (Superior) to “F” for insurance companies that have been publicly placed in liquidation. As of March 31, 2025, A.M. Best has assigned a financial strength rating of “A-” (Excellent) to both Ategrity Specialty and to Ategrity Ltd. A.M. Best assigns ratings that are intended to provide an independent opinion of an insurance company’s ability to meet its obligations to policyholders and such ratings are not evaluations directed to investors and are not a recommendation to buy, sell, or hold our common stock or any other securities we may issue. A.M. Best periodically reviews the financial strength ratings assigned to Ategrity Specialty and to Ategrity Ltd and may revise downward or revoke such ratings at its sole discretion based primarily on its analysis of our balance sheet strength (including capital adequacy and loss adjustment expense reserve adequacy), operating performance, and business profile. Factors that could affect such analysis include, but are not limited to:

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if we change our business practices from our organizational business plan in a manner that no longer supports A.M. Best’s rating;

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if unfavorable financial, regulatory, or market trends affect us, including excess market capacity;

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if our losses exceed our loss reserves;

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if we experience worse-than-expected underwriting results or increased volatility in those results;

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if we have unresolved issues with government regulators;

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if we are unable to retain our senior management or other key personnel;

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if our investment portfolio incurs significant losses or our liquidity is limited; or

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if A.M. Best alters its capital adequacy assessment methodology in a manner that would adversely affect our rating.

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These and other factors could result in a downgrade of the financial strength rating assigned to Ategrity Specialty or to Ategrity Ltd or may result in A.M. Best placing such financial strength rating outlook on a negative watch. A downgrade or withdrawal of the ratings assigned to Ategrity Specialty or to Ategrity Ltd could result in any of the following consequences, among others:

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causing our current and future brokers and insureds to choose other, more highly-rated competitors;

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increasing the cost or reducing the availability of reinsurance to us;

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severely limiting or preventing us from writing new and renewal insurance contracts; or

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making it more difficult for us to incur indebtedness if we are required to do so.

In 2021, A.M. Best issued a negative outlook to Ategrity Specialty and Ategrity Ltd which reflected A.M. Best’s concern over then-recent underwriting volatility, which resulted in pressure on our results of operations and enterprise risk management fundamentals. Although the outlook was subsequently changed to stable in 2023 after a change in management team and improvements in results of operations and enterprise risk management, the financial strength rating assigned to Ategrity Specialty and to Ategrity Ltd may be impacted in the future by volatility and other factors. In addition, in light of the earnings and capital pressures recently experienced by many financial institutions, including insurance companies, it is possible that rating organizations will heighten the level of scrutiny that they apply to such institutions, increase the frequency and scope of their credit reviews, request additional information from the companies that they rate, or increase the capital and other requirements employed in the rating organizations’ models for maintenance of certain ratings levels. We can offer no assurance that our rating will remain at its current level. It is possible that such reviews of us may result in adverse ratings consequences, which could have an adverse effect on our business, financial condition, and results of operations.

We rely on a select group of brokers, and such relationships may not continue.

We distribute the majority of our products through a select group of brokers. For the year ended December 31, 2024, 48% of our gross written premiums were distributed through three of our approximately 460 brokers as of December 31, 2024.

Our relationship with any of these brokers may be discontinued at any time. Even if the relationships do continue, they may not be on terms that are profitable for us. The termination of a relationship with one or more significant brokers could result in lower gross written premiums and could have an adverse effect on our business, financial condition, results of operations, and prospects.

Because our business depends on wholesale agents and brokers, we are exposed to certain risks arising out of our reliance on these distribution channels that could adversely affect our results.

Substantially all of our products are ultimately distributed through wholesale agents and brokers who have the principal relationships with retail agents and brokers who themselves have the relationships with our end-client policyholders. Wholesale agents and brokers generally own the “renewal rights,” and thus our business model is dependent on our relationships with, and the success of, the wholesale agents and brokers with whom we do business. Further, we are also dependent on the relationships our wholesale agents and brokers maintain with the retail agents and brokers from whom they source their business.

Our relationship with our wholesale agents and brokers may be discontinued at any time. Even if the relationships do continue, they may not be on terms that are profitable for us. For example, as insurance distribution firms continue to consolidate, their ability to influence commission rates may increase as may the concentration of business we have with a particular broker. Further, certain premiums from policyholders, where the business is produced by brokers, are collected directly by the brokers and remitted to us. In certain jurisdictions, when the insured pays its policy premium to its broker for payment on behalf of Ategrity Specialty, the premium might be considered to have been paid under applicable insurance laws and regulations. Accordingly, the insured would no longer be liable to us for those amounts, whether or not we have actually received the premium from that broker. Consequently, we assume a degree of credit risk associated with the agents and brokers with which we work. Although the failure by any of our brokers to remit premiums to us has not been material to date, there may be instances where our brokers collect premiums but do not remit them to us and we may be required under

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applicable law to provide the coverage set forth in the policy despite no related premiums being paid to us. Similarly, if we are limited in our ability to cancel policies for non-payment, our underwriting profits may decline and our business, financial condition, and results of operations could be adversely affected.

We review the financial condition of potential new brokers before we agree to transact business with them, and we periodically review the agencies and brokers with whom we do business to identify those that are not aligned with our business objectives. Following these periodic reviews, we may restrict such distributors’ access to certain types of products or terminate our relationship with them, subject to applicable contractual and regulatory requirements that limit our ability to terminate agents or require us to renew policies. Even through the utilization of these measures, we may not achieve the desired results. We also periodically conduct audits of our policyholders to ensure that their revenues and other exposure metrics are in-line with our underwriting decision at the time of binding the policy. If we find that exposure metrics are higher than originally estimated, we bill the policyholder for additional premiums. Because audits are often performed after the expiration of a policy, we are exposed to uncollectability of those premiums if a policyholder has failed or refuses to pay its additional premiums.

Because we rely on these distributors as our sales channel, any deterioration in the relationships with our distributors or failure to provide competitive compensation could lead our distributors to place more premium with other carriers and less premium with us. In addition, we could be adversely affected if the distributors with whom we do business exceed their granted authority, fail to transfer collected premium to us or breach the obligations that they owe to us. Although we routinely monitor our distribution relationships, such actions could expose us to liability.

Also, if insurance distribution firm consolidation continues at its current pace or increases in the future, our sales channels could be affected in a number of ways, including loss of market access or market share in certain geographic areas. Specifically, we could be negatively affected due to loss of talent as the people or individual brokers most knowledgeable about our products and with whom we have developed strong working relationships, or that represent a larger portion of our business, exit the business following an acquisition, or increases in our commission costs as larger distributors acquire more negotiating leverage over their fees. Any such disruption that materially affects our sales channel could have a negative impact on our business, financial condition, and results of operations.

As the speed of digitization accelerates, we are subject to risks associated with both our distributors and their ability to keep pace. In an increasingly digital world, distributors who cannot provide a digital or technology-driven experience risk losing customers who demand such an experience, and such customers may choose to utilize more technology-driven distributors.

Unexpected changes in the interpretation of our coverage or provisions, including loss limitations and exclusions in our policies, could have an adverse effect on our business, financial condition, and results of operations.

It is possible that loss limitations or exclusions in our policies will not be enforceable in the manner we intend. As industry practices and legal, judicial, social, and other conditions change, unexpected and unintended issues related to claims and coverage may emerge. For example, some of our policies may limit the period during which a policyholder may bring a claim, which may be shorter than the statutory period under which such claims can be brought against our policyholders. While these limitations and exclusions help us assess and mitigate our loss exposure, it is possible that a court or regulatory authority could nullify or void a limitation or exclusion or legislation could be enacted modifying or barring the use of such limitations or exclusions. These types of governmental actions could result in higher than anticipated losses and loss adjustment expenses, which could have an adverse effect on our business, financial condition, and results of operations. In addition, court decisions could read policy exclusions narrowly so as to expand coverage, thereby requiring insurers to create and write new exclusions.

These issues may adversely affect our business by either broadening coverage beyond our underwriting intent or by increasing the frequency or severity of claims. In some instances, these changes may not become apparent

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until sometime after we have issued insurance contracts that are affected by the changes. As a result, the full extent of liability under our insurance contracts may not be known for many years after a contract is issued. We may also become subject to disputes relating to bad faith allegations which could result in us incurring losses in excess of policy limits.

Our failure to accurately pay claims in a timely manner and to monitor and detect fraud could adversely affect our business, financial condition, results of operations, and prospects.

We must accurately and promptly evaluate and pay claims that are made under our policies. Many factors affect our ability to accurately pay claims in a timely manner, including the training and experience of our claims representatives, the effectiveness of our claims representatives and management, our ability to develop or select and implement appropriate procedures and systems to support our claims functions, and other factors. Our failure to accurately pay claims in a timely manner could lead to regulatory and administrative actions or material litigation, including bad faith claims, undermine our reputation in the marketplace, and adversely affect our business, financial condition, results of operations, and prospects.

We may be unable to prevent, monitor, or detect fraudulent activity, including policy acquisitions or payments of claims that are fraudulent in nature.

If we fail to maintain adequate systems and processes to prevent, monitor, and detect fraud, including fraudulent policy acquisitions or claims activity, or if inadvertent errors occur with such prevention, monitoring, and detection systems due to human or computer error, our business could be adversely impacted. While we believe past incidents of fraudulent activity have been relatively isolated, we cannot be certain that our systems and processes will always be adequate in the face of increasingly sophisticated and ever-changing fraud schemes. We use a variety of tools to protect against fraud, but these tools may not always be successful at preventing such fraud.

Instances of fraud may result in increased costs, including possible settlement and litigation expenses, and could have an adverse effect on our business and reputation. In addition, failure to monitor and detect fraud can result in regulatory fines or penalties.

Severe weather conditions and other catastrophes may result in an increase in the number and amount of claims filed against us.

Our business is exposed to the risk of severe weather conditions, earthquakes, and man-made catastrophes. In particular, the risks of these events may be heightened in certain geographies where we provide insurance coverage, including the risk of hurricanes in Florida, Texas, the Gulf Coast states and certain East Coast states, the risk of fires, floods, and earthquakes in California, and the risk of severe convective storms in certain Midwest states. Catastrophes can be caused by various events, including natural events such as severe winter weather, tornadoes, windstorms, earthquakes, hailstorms, severe thunderstorms, and fires, or man-made events such as explosions, war, terrorist attacks, and riots. Over the past several years, changing weather patterns and climatic conditions, such as global warming, have added to the unpredictability and frequency of natural disasters in certain parts of the world, including the markets in which we operate. Climate change may increase the frequency and severity of extreme weather events. This effect has led to conditions in the ocean and atmosphere, including warmer-than-average sea-surface temperatures and low wind shear that increase hurricane activity. The occurrence of a natural disaster or other catastrophe loss could adversely affect our business, financial condition, and results of operations. Additionally, any increased frequency and severity of such weather events, including hurricanes, could have an adverse effect on our ability to predict, quantify, reinsure, and manage catastrophe risk and may materially increase our losses resulting from such catastrophe events.

The extent of losses from catastrophes is a function of both the frequency and severity of the insured events and the total amount of insured exposure in the areas affected. The incidence and severity of catastrophes and severe weather conditions are inherently unpredictable. We manage our exposure to losses by analyzing the probability and severity of the occurrence of loss events and the impact of such events on our overall underwriting and investment portfolio. In addition, our inability to obtain reinsurance coverage at reasonable rates and in

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amounts adequate to mitigate the risks associated with severe weather conditions and other catastrophes could have an adverse effect on business, financial condition, and results of operations.

Our business is also exposed to the risk of pandemics, outbreaks, public health crises, and geopolitical and social events, and their related effects. If pandemics, outbreaks, and other events occur or re-occur, our business, financial condition, results of operations, and cash flows may be adversely affected.

Because we provide our agents with the ability to bind smaller-sized policies directly in our cloud-based underwriting system, failures to comply with our underwriting guidelines may occur, which could adversely impact our business, financial condition, and results of operations.

We market and distribute our smaller-sized insurance products through agents that have limited quoting and binding authority through our cloud-based underwriting system. These agents can bind certain risks. If any of these agents fail to comply with our underwriting guidelines and the terms of their appointments, such as misclassifying certain risks, we could be bound on a particular risk or number of risks that were not anticipated when we developed the insurance products or estimated losses and loss adjustment expenses. Such actions could adversely affect our business, financial condition, and results of operations. We actively audit the business bound through our systems by agents, including digital monitoring, but we cannot ensure that all compliance failures are detected and resolved.

If actual renewals of our existing contracts do not meet expectations, our written premiums in future years and our future results of operations and prospects could be adversely affected.

Many of our contracts are written for a one-year term. In our financial forecasting process, we make assumptions about the rates of renewal of our prior year’s contracts. The insurance and reinsurance industries have historically been cyclical businesses with intense price competition due to excessive underwriting capacity, as well as periods when shortages of capacity permitted an increase in pricing and, thus, more favorable underwriting profits. An increase in premium levels is often offset over time by an increasing supply of insurance capacity in the form of capital provided by new entrants and existing insurers, which may cause prices to decrease. Additionally, during periods of intense competition, the E&S market may shrink as standard insurance carriers expand risk appetite and extend coverage to the E&S market. Any of these factors could lead to a significant reduction in premium rates, less favorable policy terms, and fewer opportunities to underwrite insurance risk. If we are unable to modify our pricing in response to such fluctuations to stay competitive and retain our customers, our business, financial condition, results of operations, and cash flows may be adversely affected. In addition, if actual renewals do not meet expectations or if we choose not to write a renewal because of pricing conditions, our written premiums in future years and our future operations and prospects would be adversely affected.

We may act based on inaccurate or incomplete information regarding the accounts we underwrite.

We rely on information provided by insureds or their representatives when underwriting insurance policies. While we may make inquiries to validate or supplement the information provided, we may make underwriting decisions based on incorrect or incomplete information. It is possible that we will misunderstand the nature or extent of the activities or facilities and the corresponding extent of the risks that we insure because of our reliance on inadequate or inaccurate information.

Our employees could take excessive risks, which could negatively affect our financial condition and business.

As an insurance enterprise, we are in the business of binding certain risks. The employees who conduct our business, including executive officers and other members of management, underwriters, product managers, and other employees, do so in part by making decisions and choices that involve exposing us to risk. These include decisions such as setting underwriting guidelines and standards, product design and pricing, determining which business opportunities to pursue, and other decisions. We endeavor, in the design and implementation of our compensation programs and practices, to avoid giving our employees incentives to take excessive risks. Employees may, however, take such risks regardless of the structure of our compensation programs and practices. Similarly, although we employ controls and procedures designed to monitor employees’ business decisions and

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prevent them from taking excessive risks, these controls and procedures may not be effective. If our employees take excessive risks, the impact of those risks could have an adverse effect on our financial condition and business operations.

Changes in accounting practices and future pronouncements may materially affect our reported financial results.

Developments in accounting practices may require us to incur considerable additional expenses to comply, particularly if we are required to prepare information relating to prior periods for comparative purposes or to apply the new requirements retroactively. The impact of changes in current accounting practices and future pronouncements cannot be predicted but may affect the calculation of net income, stockholders’ equity, and other relevant financial statement line items.

Ategrity Specialty is required to comply with SAP. SAP is subject to constant review by the NAIC and its task forces and committees, as well as state insurance departments, in an effort to address emerging issues and otherwise improve financial reporting. Various proposals are pending before committees and task forces of the NAIC, some of which, if enacted, could have negative effects on insurance industry participants. The NAIC continuously examines existing laws and regulations. We cannot predict whether or in what form such reforms will be enacted and, if so, whether the enacted reforms will positively or negatively affect us.

Public attention to environmental, social, and governance initiatives may expose us to negative public perception, cause reputational harm, impose additional costs on our business, or impact our stock price.

In the past, attention has been directed towards publicly traded companies regarding environmental, social, and governance (“ESG”) matters. A failure, or perceived failure, to respond to investor or customer expectations related to ESG concerns could cause harm to our business and reputation. More recently, public statements with respect to ESG matters, such as emissions reduction goals, other environmental targets, or other commitments addressing certain social issues, are becoming increasingly subject to heightened scrutiny from public and governmental authorities related to the risk of potential “greenwashing,” (i.e., misleading information or false claims overstating potential ESG benefits). Our insureds include a wide variety of industries, including potentially controversial industries. Damage to our reputation as a result of our provision of policies to certain insureds could result in decreased demand for our insurance products and could have an adverse effect on our business, operational results, and financial results, as well as require additional resources to rebuild our reputation, competitive position, and brand strength.

In addition, this emphasis on ESG matters has resulted and may result in the adoption of new laws and regulations, including new reporting requirements, including with respect to climate change. ESG and sustainability-related regulation and legislation, to the extent implemented, will require us to incur significant additional costs to comply, including the implementation of significant additional internal controls, processes, and procedures regarding matters that have not been subject to such controls in the past, and impose increased oversight obligations on our management and board of directors as well as impose additional disclosure obligations on us. Additionally, our customers or other business partners may require us to provide additional climate-related information if they are also subject to additional climate-related disclosure laws or regulations in other jurisdictions. If we fail to comply with new laws, regulations, or reporting requirements, or we fail to provide complete and accurate information to our customers or other business partners, our reputation and business could be adversely impacted.

Risks related to the market and economic conditions

Factors, such as business revenue, economic conditions, the volatility and strength of the capital markets and inflation can affect the business and economic environment. These same factors affect our ability to generate

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revenue and profits. In an economic downturn that is characterized by higher unemployment, declining spending and reduced corporate revenues, the demand for insurance products is generally adversely affected, which directly affects our premium levels and profitability. Negative economic factors may also affect our ability to receive the appropriate rate for the risk we insure with our policyholders and may adversely affect the number of policies we can write, including with respect to our opportunities to underwrite profitable business. In an economic downturn, our customers may have less need for insurance coverage, cancel existing insurance policies, modify their coverage, or not renew the policies they hold with us. Existing policyholders may exaggerate or even falsify claims to obtain higher claims payments. In addition, if certain segments of the economy, such as real estate, hospitality, construction, and retail (which would affect several of our underwriting divisions at one time), were to significantly change, it could adversely affect our results. These outcomes would reduce our underwriting profit to the extent these factors are not reflected in the rates we charge.

For the year ended December 31, 2024, there were four states in which 5.0% or more of our gross written premiums were concentrated: California (21.0%), Florida (16.2%), Texas (12.8%), and New York (6.4%). Any economic downturn in any such states could have an adverse effect on our business, financial condition, and results of operations.

The insurance business is historically cyclical in nature and we believe we are currently experiencing a relatively hard market cycle, which may affect our financial performance and cause our results of operations to vary from quarter to quarter and may not be indicative of future performance.

Historically, insurance carriers have experienced significant fluctuations in results of operations due to competition in our industry, frequency and severity of catastrophic events, fluctuating interest rates, claims exceeding loss reserves, levels of capacity, deviations from expected renewal rates of existing policies and contracts, adverse investment performance, cost of reinsurance coverage, adverse litigation trends, regulatory constraints, general economic conditions, and other factors. The supply of insurance is related to prevailing prices, the level of insured losses, and the level of capital available to the industry that, in turn, may fluctuate in response to changes in rates of return on investments being earned in the insurance industry. As a result, the insurance business historically has been a cyclical industry characterized by periods of intense price competition due to excessive underwriting capacity (soft market cycle) as well as periods when shortages of capacity increased premium levels (hard market cycle). Demand for insurance depends on numerous factors, including the frequency and severity of catastrophic events, levels of capacity, the introduction of new capital providers, and general economic conditions. All of these factors fluctuate and may contribute to price declines generally in the insurance industry.

Although an individual insurance company’s financial performance depends on its own specific business characteristics, the profitability of most P&C insurance companies tends to follow this cyclical market with higher gross written premium growth and improved profitability during hard market cycles. Further, this cyclical market pattern can be more pronounced in the E&S market than in the standard insurance market. When the standard insurance market hardens, the E&S market typically hardens, and growth in the E&S market can be significantly more rapid than growth in the standard insurance market. Similarly, when conditions begin to soften, many customers that were previously driven into the E&S market may return to the admitted market, exacerbating the effects of rate decreases on our financial results. At present, we believe we are experiencing a relatively hard market cycle. However, we cannot predict the timing or duration of changes in the market cycle because the cyclicality is due in large part to the actions of our competitors and general economic factors. As a result, our results of operations are subject to fluctuation and have historically varied from quarter to quarter. We expect our quarterly results will continue to fluctuate in the future due to a number of factors, including the general economic conditions in the markets where we operate, the frequency of occurrence or severity of catastrophe or other insured events, fluctuating interest rates, claims exceeding our loss reserves, competition in our industry, deviations from expected premium retention rates of our existing policies and contracts, adverse investment performance, and the cost of reinsurance coverage.

Global climate change may have an adverse effect on our financial results.

Although uncertainty remains as to the nature and effect of future efforts to curb greenhouse gas emissions and thereby mitigate their potential long-term effects on the climate, a broad spectrum of scientific evidence

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suggests that manmade production of greenhouse gas has had an adverse effect on the global climate. Our insurance policies are generally written for one year and repriced annually to reflect changing exposures. However, assessing the risk of loss and damage associated with the adverse effects of climate change and the range of approaches to address loss and damage associated with the adverse effects of climate change, including impacts related to extreme weather events and slow onset events, remains a challenge and might adversely impact our business, financial condition, and results of operations.

Risks related to the regulatory environment

Ategrity Specialty is subject to extensive regulation in Delaware, its state of domicile, and to a lesser degree, the other states in which it operates. Ategrity Ltd is subject to extensive regulation in Bermuda. Most insurance regulations are designed to protect the interests of insurance policyholders, as opposed to the interests of investors or stockholders. These regulations generally are administered by a department of insurance in each state and relate to, among other things, authorizations to write E&S lines of business, capital and surplus requirements, investment and underwriting limitations, affiliate transactions, dividend limitations, changes in control, solvency, and a variety of other financial and non-financial aspects of our business. Significant changes in these laws and regulations could further limit our discretion or make it more expensive to conduct our business. State insurance regulators and the BMA also conduct periodic examinations of the affairs of insurance companies and require the filing of annual and other reports relating to financial condition, holding company issues and other matters. In addition, state surplus lines laws, or laws pertaining to non-admitted insurance business, require that surplus lines brokers comply with diligent search/exempt commercial purchaser laws and affidavit/document filing requirements, as well as requiring the collection and paying of any taxes, stamping fees, assessment fees, and other applicable charges on such business. Excess and surplus lines businesses, such as Ategrity Specialty’s businesses, are often subject to special licensing, surplus lines tax, and/or due diligence requirements by the home state of the insured. We rely on third-party surplus lines brokers to comply with such laws and regulations. Fines for failing to comply with these surplus lines requirements, specifically for failing to comply with the surplus lines licensing or due diligence requirements, vary by state but can range to several million dollars. These regulatory requirements may impose timing and expense constraints that could adversely affect our ability to achieve some or all of our business objectives.

In addition, state insurance regulators have broad discretion to deny or revoke licenses for various reasons, including violation of regulations. In some instances, where there is uncertainty as to applicability, we follow practices based on our interpretations of regulations or practices that we believe generally to be followed by the industry. These practices may turn out to be different from the interpretations of regulatory authorities. If we do not have the requisite licenses and approvals or do not comply with applicable regulatory requirements, state insurance regulators could preclude or temporarily suspend us from carrying on some or all of our activities or could otherwise penalize us. This could adversely affect our ability to operate our business. Further, changes in the level of regulation of the insurance industry or changes in laws or regulations themselves or interpretations by regulatory authorities could interfere with our operations and require us to bear additional costs of compliance, which could adversely affect our ability to operate our business.

Failure to maintain our risk-based capital at the required levels could adversely affect our ability to maintain regulatory authority to conduct our business.

Ategrity Specialty is required to have sufficient capital and surplus in order to comply with insurance regulatory requirements, support its business operations and minimize its risk of insolvency. The NAIC has developed a system to test the adequacy of statutory capital and surplus of U.S.-based insurers, known as risk-based capital, that all states have adopted. This system establishes the minimum amount of capital and surplus necessary for an insurance company to support its overall business operations in consideration of its size and risk profile. It identifies insurers that may be inadequately capitalized by looking at certain risk factors, including asset risk, credit risk,

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and underwriting risk with respect to the insurer’s business in order to determine an insurer’s authorized control level risk-based capital. An insurer’s risk-based capital ratio measures the relationship between its total adjusted capital and its authorized control level risk-based capital.

Insurers with a ratio falling below certain calculated thresholds may be subject to varying degrees of regulatory action, including heightened supervision, examination, rehabilitation, or liquidation. An insurance company with total adjusted capital that is less than 200% of its authorized control level risk-based capital is at a company action level, which would require the insurance company to file a risk-based capital plan that, among other things, contains proposals of corrective actions the company intends to take that are reasonably expected to result in the elimination of the company action level event. Additional action level events occur when the insurer’s total adjusted capital falls below 150%, 100%, and 70% of its authorized control level risk-based capital. Lower percentages trigger increasingly severe regulatory responses. In the event of a mandatory control level event (triggered when an insurer’s total adjusted capital falls below 70% of its authorized control level risk-based capital), an insurer’s primary regulator is required to take steps to place the insurer into receivership.

In addition, the IRIS is a collection of analytical tools designed to provide state insurance regulators with an integrated approach to screening and analyzing the financial condition of insurance companies operating in their respective states. If our ratios fall outside of the usual range for one or more ratios set forth by the IRIS for any number of reasons, it could subject us to heightened regulatory scrutiny or measures or create investor uncertainty around the stability of our financial condition, which could harm our business.

Further, the NAIC has promulgated a Model Regulation to Define Standards and Commissioner’s Authority for Companies Deemed to be in Hazardous Financial Condition (the “Hazardous Financial Condition Standards”), which has been adopted by many states in whole or part. If our financial condition is deemed by state insurance regulators to meet the Hazardous Financial Conditions Standards, it could subject us to heightened regulatory scrutiny or measures or create uncertainty around the stability of our financial condition, which could harm our business.

As a relatively new entrant to the insurance industry, we may face additional capital and surplus requirements as compared to those of our larger and more established competitors. Failure to maintain adequate risk-based capital at the levels required by law and/or the Delaware Department of Insurance as described above could result in increasingly onerous reporting and examination requirements and could adversely affect our ability to maintain regulatory authority to conduct our business.

State insurance regulators impose additional reporting requirements regarding enterprise risk on insurance holding company systems, with which we must comply as an insurance holding company.

In the past decade, various state insurance regulators have increased their focus on risks within an insurer’s holding company system that may pose enterprise risk to the insurer. In 2012, the NAIC adopted significant amendments to the Insurance Holding Company Act and related regulations (the “NAIC Amendments”). The NAIC Amendments are designed to respond to perceived gaps in the regulation of insurance holding company systems in the United States. One of the major changes is a requirement that an insurance holding company system’s ultimate controlling person submit annually to its lead state insurance regulator an “enterprise risk report” that identifies activities, circumstances, or events involving one or more affiliates of an insurer that, if not remedied properly, are likely to have an adverse effect upon the financial condition or liquidity of the insurer or its insurance holding company system as a whole. Currently, as Mr. Zimmer, a revocable trust for Mr. Zimmer’s benefit, and an irrevocable trust for his immediate family are the ultimate controlling persons in our insurance holding company system, he and the trusts are required to file an annual enterprise risk report in Delaware. Other changes include the requirement that a controlling person submit prior notice to its domiciliary insurance regulator of a divestiture of control, having detailed minimum requirements for cost sharing and management agreements between an insurer and its affiliates and expanding of the agreements between an insurer and its affiliates to be filed with its domiciliary insurance regulator, including states in which the insurer is commercially domiciled. The NAIC Amendments must be adopted by the individual state legislatures and insurance regulators in order to be effective, and many states, including Delaware, have already done so.

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The NAIC and international insurance regulators, including the International Association of Insurance Supervisors, are also working to develop group capital standards. In December 2020, the NAIC adopted a group capital calculation (“GCC”) tool using an RBC aggregation methodology for all entities within the insurance holding company system, including non-U.S. entities. The goal is to provide U.S. regulators with a method to aggregate the available capital and the minimum capital of each entity in a group in a way that applies to all groups regardless of their structure. The NAIC has stated that the calculation is a regulatory tool and does not constitute a capital requirement or standard, but there can be no guarantee that will remain the case. It is unclear how the GCC will interact with existing capital requirements for insurance companies in the United States and with international capital standards. It is possible that we may be required to hold additional capital as a result of future developments.

We may become subject to additional government or market regulations which may have an adverse impact on our business.

Our business could be adversely affected by changes in state laws, including those relating to asset and reserve valuation requirements, surplus requirements, limitations on investments and dividends, enterprise risk and risk-based capital requirements, and, at the federal level, by laws and regulations that may affect certain aspects of the insurance industry, including proposals for preemptive federal regulation. The U.S. federal government generally has not directly regulated the insurance industry except for certain areas of the market, such as insurance for flood, nuclear, and terrorism risks. However, the federal government has undertaken initiatives or considered legislation in several areas that may affect the insurance industry, including tort reform, corporate governance, and the taxation of reinsurance companies.

The Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) also established the Federal Insurance Office (the “FIO”) and vested the FIO with the authority to monitor all aspects of the insurance sector and the ability to recommend to the Financial Stability Oversight Council the designation of an insurer as “systemically significant” and therefore subject to regulation by the Federal Reserve as a bank holding company. Legislation has been introduced from time to time in Congress that, if enacted, could result in the federal government assuming a more direct role in the regulation of the insurance industry, including federal licensing in addition to or in lieu of state licensing and requiring reinsurance for natural catastrophes. In addition, the Bermuda reinsurance regulatory framework has become subject to increased scrutiny in many jurisdictions. As a result, the BMA has implemented and imposed additional requirements on the companies it regulates, which requirements could adversely impact the operations of Ategrity Ltd. We are unable to predict whether any legislation will be enacted or any regulations will be adopted, or the effect any such developments could have on our business, financial condition, or results of operations.

Additionally, we currently derive revenues from customers in the cannabis industry. As such, any risks related to the cannabis industry, including but not limited to cannabis being deemed a controlled substance under federal laws, may adversely impact our clients and potential clients, which may in turn, impact our services. The legality of cannabis could be reversed in one or more states, which might force businesses, including our customers, to cease operations in one or more states entirely. A change in the legal status of, or the enforcement of federal laws related to, the cannabis industry could negatively impact us and lead to a decrease in our revenue through the loss of current and potential customers.

Increased regulation or scrutiny of alternative investment advisors and certain trading methods such as short selling could affect the Investment Manager’s ability to manage our investment portfolios or affect our business reputation.

A substantial portion of our portfolio assets are allocated to the Utility & Infrastructure Investments, which is comprised of investments in private investment funds managed by the Investment Manager. The legal, tax, and regulatory environment worldwide for private investment funds and their managers is evolving. New laws and regulations or actions taken by regulators that restrict the ability of the Investment Manager to pursue its investment program or employ brokers and other counterparties could have a material adverse effect on the Utility & Infrastructure Investments.

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The Investment Manager is regularly involved in trading activities that involve a number of U.S. and foreign securities law regimes. Violations of any such law (or allegations of such violations) could directly or indirectly result in severe restrictions on the Investment Manager’s activities and, indirectly, do damage to our investment portfolio or the reputation of the Investment Manager and to us. In addition, the securities and futures markets are subject to comprehensive statutes, regulations, and margin requirements. The SEC, other regulators, and self-regulatory organizations and exchanges are authorized to take extraordinary actions in the event of market emergencies. The regulation of derivatives transactions and funds that engage in such transactions is an evolving area of law and is subject to modification by government and judicial action. Any future regulatory change could have a significant negative impact on our investment portfolio and, accordingly, our financial condition and results of operations.

For example, the Investment Manager routinely engages in short selling for the account of the funds underlying the Utility & Infrastructure Investments. Short sale transactions have been subject to increased regulatory scrutiny, including the imposition of restrictions on short selling certain securities and reporting requirements. The Investment Manager’s ability to execute a short selling strategy in managing the Utility & Infrastructure Investments may be adversely impacted by temporary or new permanent rules, interpretations, prohibitions, and restrictions adopted in response to these adverse market events. Temporary restrictions or prohibitions on short selling activity may be imposed by regulatory authorities with little or no advance notice and may impact prior and future trading activities of the Investment Manager. Additionally, the SEC, its non-U.S. counterparts, other governmental authorities, or self-regulatory organizations may at any time promulgate permanent rules or interpretations consistent with such temporary restrictions or that impose additional or different permanent or temporary limitations or prohibitions. The SEC might impose different limitations or prohibitions on short selling from those imposed by various non-U.S. regulatory authorities. These different regulations, rules, or interpretations might have different effective periods.

Regulatory authorities could, from time to time, impose restrictions that adversely affect the Investment Manager’s ability to borrow certain securities in connection with short sale transactions for the Utility & Infrastructure Investments. In addition, traditional lenders of securities are often less likely to lend securities under certain market conditions. As a result, the Investment Manager may not be able to effectively pursue a short selling strategy due to a limited supply of securities available for borrowing. We may also incur additional costs in connection with short sale transactions effected for the Utility & Infrastructure Investments, including in the event that the Investment Manager is required to enter into a borrowing arrangement with respect to the Utility & Infrastructure Investments in advance of any short sales. Moreover, the ability to continue to borrow a security is not guaranteed and our account will be subject to strict delivery requirements. The inability to deliver securities within the required time frame may subject us to mandatory close out by the executing broker-dealer. A mandatory close out may subject us to unintended costs and losses. Certain action or inaction by third parties, such as executing broker-dealers or clearing broker-dealers, may materially impact the Investment Manager’s ability to effect short sale transactions for the Utility & Infrastructure Investments.

Additionally, the NAIC may institute changes to the risk-based capital charges and capital requirements for invested assets held by insurers, including additional requirements that may apply in relation to alternative investments such as the Utility & Infrastructure Investments, requiring Ategrity Specialty to hold additional capital in order to support its investments and meet relevant state risk based capital requirements.

Risks related to our operations

We could be adversely affected by the loss of one or more key personnel or by an inability to attract and retain qualified personnel.

We depend on our ability to attract and retain experienced and seasoned personnel who are knowledgeable about our business. Our senior management team, including our Chief Executive Officer, Justin Cohen, and our President and Chief Underwriting Officer, Chris Schenk, plays an important role in our strategic direction, broker partnership, corporate culture, and our continued success as an organization. The loss of Mr. Cohen, Mr. Schenk, or other members of our senior management team could adversely impact our business.

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We could be adversely affected if we fail to adequately plan for the succession of our senior leaders and key executives. Our current succession plans and employment arrangements with certain key executives do not guarantee their services will continue to be available to us.

The pool of talent from which we actively recruit is limited and may fluctuate based on market dynamics specific to our industry and independent of overall economic conditions. As such, higher demand for employees having the desired skills and expertise could lead to increased compensation expectations for existing and prospective personnel, making it difficult for us to retain and recruit key personnel and maintain labor costs at desired levels. Certain of our employees are subject to non-compete and non-solicitation provisions that generally apply during, and extend for six to twelve months following the termination of, their employment. Not all jurisdictions permit such non-compete agreements, and regardless of the jurisdiction, our key personnel could still pursue employment opportunities with other parties, including with any of our competitors and there are no assurances that our non-compete agreements with any such key personnel would be enforceable in a cost-effective manner, if at all. Should any of our key personnel terminate his or her employment with us, or if we are unable to retain and attract talented personnel, we may be unable to maintain our current competitive position in the specialized markets in which we operate, which could adversely affect our results of operations.

We could suffer security breaches, loss of data, cyberattacks, and other information technology failures, and are subject to laws and regulations concerning data privacy and security that are continually evolving. Actual or suspected information technology failures or failures to comply with applicable law could disrupt our operations, damage our reputation, and adversely affect our business, financial condition, or results of operations.

Our business is highly dependent on our information technology and telecommunications systems, including our underwriting systems. We rely on these systems to interact with brokers, agents, and insureds, to underwrite business, to prepare policies and process premiums, to perform actuarial and other modeling functions, to process claims and make claims payments, and to prepare internal and external financial statements. We also rely on our information and telecommunications systems for employees to interact with each other within the company, as most employees work on a remote basis a majority of their time as opposed to in physical offices. Some of these systems may include or rely on third-party systems provided by third-party service providers and/or not located on our premises or under our control.

We and our service providers face numerous and evolving cybersecurity risks that threaten the confidentiality, integrity, and availability of systems and confidential information, including vulnerabilities in commercial software that is integrated into our (or our suppliers’ or service providers’) IT systems, products, or services. The risk of a data security breach or a disruption has generally increased in frequency, intensity, and sophistication. Techniques used to compromise or sabotage systems change frequently, may originate from less regulated and remote areas of the world and be difficult to detect and generally are not recognized until launched against a target. Events such as natural catastrophes, terrorist attacks, industrial accidents, computer viruses, ransomware, a security breach by an unauthorized person, employee error, malfeasance, faulty password management, or other irregularity, and other cyber-attacks may cause our systems to fail or be inaccessible for extended periods of time. We have implemented security measures designed to protect against breaches of security, such as business contingency plans and other reasonable plans to protect our systems, whether housed internally or through third-party cloud services. In addition, while we generally monitor vendor risk, including the security and stability of our critical vendors, we may fail to properly assess and understand the risks and costs involved in the third-party relationships. We cannot guarantee that these measures will be effective and sustained or repeated system failures or service denials could severely limit our ability to write and process new and renewal business, provide customer service, pay claims in a timely manner, or otherwise operate in the ordinary course of business. We may be unable to adequately investigate or remediate any vulnerabilities to our systems, even if identified, due to attackers using tools and techniques that are designed to circumvent controls, avoid detection, and remove or obfuscate forensic evidence.

Any such event may result in operational disruptions as well as unauthorized access to, the disclosure of, or loss of, our proprietary information or our customers’ data and information, which in turn may result in legal claims,

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regulatory scrutiny and liability, reputational damage, the incurrence of costs to eliminate or mitigate further exposure, the loss of customers or affiliated advisors, or other damage to our business. In addition, the trend toward general public notification of such incidents could exacerbate the harm to our business, financial condition, and results of operations. Even if we successfully protect our technology infrastructure and the confidentiality of sensitive data, we could suffer harm to our business and reputation if attempted security breaches are publicized. We cannot be certain that advances in criminal capabilities, discovery of new vulnerabilities, attempts to exploit vulnerabilities in our systems, data thefts, physical system or network break-ins, inappropriate access, or other developments will not compromise or breach the technology or other security measures protecting the networks and systems used in connection with our business.

In addition, as part of our normal business activities, we handle information related to individuals including, but not limited to, employees, claimants, individual third-party brokers or agents, and individual vendors. As such, we are subject to various federal, state, and local laws, regulations, and industry standards. The regulatory environment surrounding information security and privacy is increasingly demanding, with frequent imposition of new and changing requirements that are subject to differing interpretations. In the United States, there are numerous federal and state data privacy and security laws, rules, and regulations governing the collection, use, storage, sharing, transmission, and other processing of personal information, including federal and state data privacy laws, data breach notification laws, and consumer protection laws.

Any failure or perceived failure by us to comply with laws, regulations, policies, or regulatory guidance relating to privacy or data security may result in governmental investigations and enforcement actions, litigation, fines and penalties, or adverse publicity and could cause our customers and consumers to lose trust in us, which could have an adverse effect on our reputation and business.

The effects of litigation on our business are uncertain and could have an adverse effect on our business.

As is typical in our industry, we continually face risks associated with litigation of various types, including disputes relating to insurance claims under our policies as well as other general commercial and corporate litigation. Although we are not currently involved in any material litigation with our customers, other members of the insurance industry are the target of class action lawsuits and other types of litigation, some of which involve claims for substantial or indeterminate amounts, and the outcomes of which are unpredictable. This litigation is based on a variety of issues, including insurance and claim settlement practices. We cannot predict with any certainty whether we will be involved in such litigation in the future or what impact such litigation would have on our business.

Any failure to protect our intellectual property rights could impair our ability to protect our proprietary technology platform and brand, or we may be sued by third parties for alleged infringement of their proprietary rights.

Our success and ability to compete depend in part on our intellectual property, which includes our rights in our proprietary technology platform and our brand. We primarily rely on copyright, trade secret and trademark laws, and confidentiality or license agreements with our employees, customers, service providers, partners, and others to protect our intellectual property rights. The steps we take to protect our intellectual property, however, may be inadequate. Litigation brought to protect and enforce our intellectual property rights could be costly, time-consuming, and distracting to management and could result in the impairment or loss of portions of our intellectual property. Additionally, our efforts to enforce our intellectual property rights may be met with defenses, counterclaims, and countersuits attacking the validity and enforceability and scope of our intellectual property rights. Our failure to secure, protect, and enforce our intellectual property rights could adversely affect our brand and adversely impact our business.

Our success depends also in part on our not infringing on the intellectual property rights of others. Our competitors, as well as a number of other entities and individuals, may own or claim to own intellectual property relating to our industry or to our brand. In the future, third parties may claim that we are infringing on their intellectual property rights, and we may be found to be infringing on such rights. Any claims or litigation could

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cause us to incur significant expenses and, if successfully asserted against us, could require that we pay substantial damages or ongoing royalty payments, prevent us from offering our services or require that we comply with other unfavorable terms. Even if we were to prevail in such a dispute, any litigation could be costly and time-consuming and divert the attention of our management and key personnel from our business operations.

We employ third-party and open-source licensed software for use in our business, and the inability to maintain these licenses, errors in the software we license or the terms of open- source licenses could result in increased costs or reduced service levels, which would adversely affect our business.

Our business relies on certain third-party software obtained under licenses from other companies. We anticipate that we will continue to rely on such third-party software in the future. Although we believe that there are commercially reasonable alternatives to the third-party software we currently license, this may not always be the case, or it may be difficult or costly to replace. In addition, integration of new third-party software may require significant work and require substantial investment of our time and resources. Our use of additional or alternative third-party software would require us to enter into license agreements with third parties, which may not be available on commercially reasonable terms or at all. Many of the risks associated with the use of third-party software cannot be eliminated, and these risks could negatively affect our business.

Additionally, the software powering our technology systems incorporates software covered by open-source licenses. The terms of many open-source licenses have not been interpreted by U.S. courts and there is a risk that the licenses could be construed in a manner that imposes unanticipated conditions or restrictions on our ability to operate our systems. If portions of our proprietary software are determined to be subject to an open-source license, we could be required to publicly release the affected portions of our source code or re-engineer all or a portion of our technology systems, each of which could reduce or eliminate the value of our technology systems. Such risk could be difficult or impossible to eliminate and could adversely affect our business, financial condition, and results of operations.

We may not be able to effectively implement or adapt to changes in technology, particularly with respect to artificial intelligence, which may result in interruptions to our business or even in a competitive disadvantage.

Developments in technology are affecting the insurance business. For example, insurance companies are beginning to use artificial intelligence in a number of applications, including risk assessment, claims processing, customer service, fraud detection, and predictive analytics and modeling. We believe that the development and implementation of new technologies will require additional investment of our capital resources in the future, and it is possible that we may not be able to effectively implement or adapt to new technologies. We have not determined the amount of resources and the time that this development and implementation may require, which may result in short-term, unexpected interruptions to our business, or may result in a competitive disadvantage in price and/or efficiency, as we endeavor to develop or implement new technologies. In addition, changes in technology typically outpace corresponding regulations, which may lead to periods of uncertainty in the permissible uses of certain technology and to differences or even inconsistencies in the regulatory approaches across jurisdictions. The absence of regulations or conflicts in regulations may further limit our ability to implement new technology in an effective and timely manner.

We are subject to stringent and changing privacy and data security laws, regulations, and standards related to data privacy and security. Our actual or perceived failure to comply with such obligations could harm our reputation, subject us to significant fines and liability, or adversely affect our business.

We are subject to the privacy provisions of the federal Gramm-Leach-Bliley Act and the NAIC Insurance Information and Privacy Protection Model Act, to the extent adopted and implemented by various state legislatures and insurance regulators in states in which we conduct our business. The regulations implementing these laws require insurance companies to disclose their privacy practices to consumers, allow them to opt-in or opt-out, depending on the state, of the sharing of certain personal information with unaffiliated third parties, and maintain certain security controls to protect their information. Violators of these laws face regulatory enforcement action, substantial civil penalties, injunctions, and in some states, private lawsuits for damages.

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Privacy and data security regulation in the United States is rapidly evolving. For example, California enacted the California Consumer Privacy Act (the “CCPA”), which became effective January 1, 2020. The CCPA and related regulations give California residents expanded rights to access and request deletion of their personal information, opt out of certain personal information sharing and receive detailed information about how their personal information is used and shared. The CCPA provides for civil penalties for violations, as well as a private right of action for certain data breaches, which is expected to increase the volume and success of class action data breach litigation. In addition to increasing our compliance costs and potential liability, the CCPA’s restrictions on “sales” of personal information may restrict our use of cookies and similar technologies for advertising purposes. The CCPA excludes information covered by Gramm-Leach-Bliley Act, the Driver’s Privacy Protection Act, the Fair Credit Reporting Act from the CCPA’s scope, but the CCPA’s definition of “personal information” is broad and may encompass other information that we maintain. Some observers have noted that the CCPA could mark the beginning of a trend toward more stringent privacy legislation in the U.S., and multiple states have enacted or proposed similar laws. There is also discussion in Congress of new comprehensive federal data protection and privacy law to which we likely would be subject if it is enacted.

In addition, California voters approved the November 2020 ballot measure which enacted the California Privacy Rights Act (the “CPRA”), substantially expanding the requirements of the CCPA. As of January 1, 2023, the CPRA gave consumers the ability to limit use of precise geolocation information and other categories of information classified as “sensitive”; add e-mail addresses and passwords to the list of personal information that, if lost or breached, would give the affected consumers the right to bring private lawsuits; increase the maximum penalties threefold for violations concerning consumers under age 16; and establish the California Privacy Protection Agency to implement and enforce the new law, as well as impose administrative fines. The effects of the CCPA, CPRA and other similar state or federal laws are potentially significant and may require us to modify our data processing practices and policies, incur substantial compliance costs, and subject us to increased potential liability.

Additionally, we are subject to the terms of our privacy policies, privacy-related disclosures and contractual and other privacy-related obligations to our customers and other third parties. Any failure or perceived failure by us or third parties we work with to comply with these policies, disclosures, and obligations to customers or other third parties, or privacy or data security laws may result in governmental or regulatory investigations, enforcement actions, regulatory fines, criminal compliance orders, litigation, or public statements against us by consumer advocacy groups or others, and could cause customers to lose trust in us, all of which could be costly and have an adverse effect on our business.

Any future acquisitions, strategic investments, or new platforms could expose us to further risks or turn out to be unsuccessful.

From time to time, we may pursue growth through acquisitions and strategic investments in businesses or new underwriting or marketing platforms. The negotiation of potential acquisitions or strategic investments as well as the integration of an acquired business, personnel, or underwriting or marketing platforms could result in a substantial diversion of management resources and the emergence of other risks, such as potential losses from unanticipated litigation, a higher level of claims than is reflected in reserves, loss of key personnel in acquired businesses, or an inability to generate sufficient revenue to offset acquisition costs.

Our ability to manage our growth through acquisitions, strategic investments, or new or alternative platforms will depend, in part, on our success in addressing such risks. While we are not currently contemplating any such acquisitions or strategic investments, our nimble approach to capital management based on opportunities presented and sought out means that we may opportunistically from time to time pursue such acquisitions, new platforms, or strategic investment strategies. Any failure by us to implement our acquisitions, new platforms, or strategic investment strategies effectively could have an adverse effect on our business, financial condition, results of operations, and prospects.

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Risks related to our growth

Our limited operating history makes it difficult to evaluate our current business performance, implementation of our business model and our future prospects.

Our business commenced operations in 2018. Our limited operating history may make it difficult to evaluate our current business and our future prospects. While our revenue has grown in recent periods, this growth rate may not be sustainable and should not be considered indicative of future performance, and we may not realize sufficient revenue to maintain profitability in the future. As we grow our business, we expect our revenue growth rates may slow in future periods due to several reasons, which may include slowing demand for our products, increasing competition, a decrease in the growth of our overall market, and our failure to capitalize on growth opportunities or the maturation of our business. In addition, we have encountered and will continue to encounter risks and difficulties frequently experienced by growing companies in rapidly changing industries, including increasing and unforeseen expenses as we continue to grow our business. If we do not manage these risks successfully, our business may be harmed.

We may not be able to manage our growth effectively.

Our gross written premiums grew from $352.6 million for the year ended December 31, 2023, to $437.0 million for the year ended December 31, 2024. As of March 31, 2025, we had 175 total employees, up from 169 as of December 31, 2024. In addition, since our business commenced operations in 2018, we have expanded our geographic footprint, now offering insurance in 48 states. Our rapid growth has placed and may continue to place significant demands on our management and our operational and financial resources. We have hired and expect to continue hiring additional personnel to support our rapid growth. Our organizational structure is becoming more complex as we add staff, and we will need to enhance our operational, financial, and management controls as well as our reporting systems and procedures. In addition, our growth plan will require us to make significant investments in technology. Such investments will also require us to roll out and integrate new technology platforms and to migrate our products from our existing platforms. Such technology may not perform up to our specifications and we may be required to make additional expenditures to remediate any deficiencies. We may not achieve our desired returns on such investments in technology as a result. Additionally, we have experienced and may continue to experience periods of increased levels of demand that place strains on our existing resources. Our human resources, systems, and technology may not be adequate to sustain the level of customer service and quality control we strive to provide in such situations. Such demand may exceed the capacity of the infrastructure and systems we have in place to meet such demand. Any failure under such circumstances to address our clients’ needs on a timely and efficient basis could result in loss of business and damage to our reputation. Any of the foregoing could have an adverse effect on our customer satisfaction, reputation, competitive position, and our brand. Additionally, we intend to further grow our business in the future, which could require additional capital, systems development, and skilled personnel. However, we must be able to meet our capital needs, expand our systems and our internal controls effectively, allocate our human resources optimally, identify and hire qualified employees, or effectively incorporate the components of any businesses we may acquire in our effort to achieve growth. The failure to manage our growth effectively could have an adverse effect on our business, financial condition, and results of operations.

Risks related to our liquidity and access to capital

Because we are a holding company and substantially all of our operations are conducted by our insurance subsidiaries, our ability to pay dividends and service our debt obligations depends on our ability to obtain cash dividends or other permitted payments from our insurance subsidiaries.

The continued operation and growth of our business will require substantial capital. Accordingly, after the completion of this offering, we do not intend to declare and pay cash dividends or make other distributions on shares of our common stock in the foreseeable future. See “Dividend policy.” Because we are a holding company with no business operations of our own, our ability to pay dividends and other distributions to stockholders largely depends on dividends and other distributions from our primary insurance subsidiaries, Ategrity Specialty

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and Ategrity Ltd. State and foreign insurance laws, including the laws of Delaware and Bermuda, restrict the ability of Ategrity Specialty and Ategrity Ltd, respectively, to determine how we declare stockholder dividends and make other distributions. State and foreign insurance regulators require insurance companies to maintain specified levels of statutory capital and surplus. See “Management’s discussion and analysis of financial condition and results of operation—Liquidity and capital resources” and “Regulation—Restrictions on paying dividends.”

The payment of any extraordinary dividend by Ategrity Specialty requires the prior approval (or no disapproval after thirty days’ notice) of the Commissioner of the Delaware Department of Insurance. “Extraordinary dividend” is defined under the Delaware Insurance Code as any dividend or distribution of cash or other property, whose fair market value together with that of other dividends or distributions made within the preceding twelve months, exceeds the greater of (a) ten percent of Ategrity Specialty’s surplus as of December 31 of the preceding year, or (b) Ategrity Specialty’s net income for the twelve-month period ending December 31 of the preceding year, but does not include pro rata distributions of any class of the insurance company’s own securities. In addition, Ategrity Specialty’s may not declare or pay a dividend or other distribution from any source other than earned surplus without the Delaware Commissioner’s prior approval.

In addition, insurance regulators have broad powers to prevent a reduction of statutory surplus to inadequate levels, and there is no assurance that dividends of the maximum amount calculated under any applicable formula would be permitted. Delaware may in the future adopt statutory provisions more restrictive than those currently in effect.

Ategrity Ltd is highly regulated and is required to comply with various conditions before it can pay dividends or make distributions to us. Bermuda law, including the Insurance Act 1978, as amended, and related rules and regulations (the “Insurance Act”), and the Companies Act 1981, as amended (the “Companies Act”) impose restrictions on Ategrity Ltd’s ability to pay dividends to us based on solvency margins and surplus and capital requirements. These restrictions, and any other future restrictions adopted by the BMA, could have the effect, under certain circumstances, of significantly reducing dividends or other amounts payable to us by Ategrity Ltd without affirmative approval of the BMA.

Any determination to pay dividends or other distributions in the future will be at the discretion of our Board of Directors and will depend upon results of operations, financial condition, contractual restrictions pursuant to our debt agreements, our indebtedness, restrictions imposed by applicable law, and other factors our Board of Directors deems relevant. Consequently, investors may need to sell all or part of their holdings of our common stock after price appreciation, which may never occur, as the only way to realize any future gains on their investment. Investors seeking immediate cash dividends should not purchase our common stock.

The maximum amount of dividends that our subsidiaries can pay us during 2025 without regulatory approval is $37.4 million.

Our ability to incur a substantial level of indebtedness may reduce our financial flexibility, affect our ability to operate our business and divert cash flow from operations for debt service.

As of March 31, 2025, we had no outstanding indebtedness, and no amounts drawn on our letter of credit agreements. See “Management’s discussion and analysis of financial condition and results of operation—Liquidity and capital resources.”

We may incur substantial indebtedness in the future, and, if we do so, the risks related to our level of indebtedness could increase.

If we were to incur indebtedness in the future, it could affect our operations in several ways, including but not limited to the following:

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increase our vulnerability to changes in general economic, industry, and competitive conditions;

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require us to dedicate a portion of our cash flow to make payments on our indebtedness, thereby reducing the availability of our cash flow to fund other corporate purposes;

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place us at a competitive disadvantage compared to our competitors that are less leveraged and therefore potentially more able to take advantage of opportunities that our level of indebtedness would prevent us from pursuing; and

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impair our ability to obtain additional financing in the future.

We may require additional capital in the future, which may not be available or may only be available on unfavorable terms.

Our future capital requirements depend on many factors, including our ability to write new business successfully and to establish premium rates and reserves at levels sufficient to cover losses. To the extent that the funds generated by this offering are insufficient to fund future operating requirements and cover claim losses, we may need to raise additional funds through financings or curtail our growth. Many factors will affect the amount and timing of our capital needs, including our growth rate and profitability, our claims experience, the availability of reinsurance, market disruptions, and other unforeseeable developments. If we need to raise additional capital, equity or debt financing may not be available at all or may be available only on terms that are not favorable to us. In the case of equity financings, dilution to our stockholders could result. In the case of debt financings, we may be subject to covenants that restrict our ability to freely operate our business. In any case, such securities or other debt may have rights, preferences, and privileges that are senior to those of the shares of common stock offered hereby. If we cannot obtain adequate capital on favorable terms or at all, we may not have sufficient funds to implement our operating plans and our business, financial condition, or results of operations could be adversely affected.

Risks related to our investment strategy

Our business, prospects, financial condition, or results of operations may be adversely affected by the performance of our investment portfolios or reductions in the aggregate value of our investment portfolios.

Our results of operations depend in part on the performance of our investment portfolio, including our Utility & Infrastructure Investments and our fixed income portfolios which are managed by us or the Investment Manager. We derive a significant portion of our income or loss from our investment in the Absolute Return Utility & Infrastructure Fund. As of March 31, 2025, consolidated investments in the Absolute Return Utility & Infrastructure Fund through the Utility Limited Partnership, reflected on a net asset basis, totaled $165.9 million, representing approximately 99.7% of the net assets of the Utility Limited Partnership. As of March 31, 2025, the Utility Limited Partnership had gross assets of $263.4 million and gross liabilities of $97.3 million. As a result, we have significant exposure to the investments in the Absolute Return Utility & Infrastructure Fund, as well as to our other investment assets. Our investments held through the Utility Limited Partnership are carried on the balance sheet of the Absolute Return Utility & Infrastructure Fund at fair market value and are subject to potential losses and declines in market value. In turn, we value our investment in the Utility Limited Partnership at fair value, which is estimated based on our share of the net asset value (“NAV”) of the Absolute Return Utility & Infrastructure Fund as provided by the Investment Manager. For more information about the risks of this investment, see “—Risks associated with the Investment Manager’s strategy in managing the Utility & Infrastructure Investments could be greater than the investment risks faced by some of the other insurers with whom we compete.”

Our investment portfolio that is not invested in the Utility & Infrastructure Investments consists almost entirely of cash, cash equivalents, treasuries, and predominantly investment-grade fixed income securities, which are held in accounts managed internally or by the Investment Manager. Our fixed income security invested assets totaled $457.4 million as of March 31, 2025. This fixed investment portfolio is subject to risks associated with potential declines in credit quality related to specific issuers or specific industries and a general weakening of the economy, which are typically reflected through credit spreads. Credit spread is the additional yield on fixed income securities and loans above the risk-free rate, typically referenced as the yield on U.S. treasury securities, that market participants require to compensate them for assuming credit, liquidity, and/or prepayment risks. Credit spreads vary in response to the market’s perception of risk and liquidity in a specific issuer or specific sector.

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Additionally, credit spreads are influenced by the credit ratings, and the reliability of those ratings, published by external rating agencies. Our fixed income portfolio includes investments in U.S. Treasury bonds. In May 2025, Moody’s downgraded the U.S. long-term issuer and senior unsecured ratings to Aa1 from Aaa and changed its outlook to stable from negative in response to the increase in government debt and interest payment ratios to levels that are significantly higher than similarly rated sovereigns. This and any further downgrades could negatively impact our investment portfolio. Although we have the ability to use derivative financial instruments to manage these risks, the effectiveness of such instruments varies with liquidity and other conditions that may impact derivative and bond markets.

The U.S. inflation rate began increasing in 2021, peaked in the middle of 2022 and began to gradually decline in the second half of 2022. Sustained levels of high inflation generally cause the U.S. Federal Reserve (the “Fed”) and other central banks to increase interest rates. The Fed raised its benchmark interest rate 11 times between March 2022 and July 2023 to curb inflation. The Fed wants inflation to return to its 2% goal over time and it is still high in absolute terms. The Fed has lowered its benchmark interest rate three times since September 2024 by an aggregate 100 basis points to a new range of 4.25% to 4.50% from its 23-year high of 5.25% to 5.50%. Should interest rates continue to decline, including as a result of steps taken by the federal government to slow inflation, such as the passage of the Inflation Reduction Act of 2022, a low interest rate environment would place pressure on our net investment income, particularly as it relates to these securities and short-term investments, which, in turn, may adversely affect our results of operations. Conversely, future increases in interest rates could cause the values of our fixed income securities portfolios to decline, with the magnitude of the decline depending on the duration of securities included in our portfolio and the amount by which interest rates increase. Some fixed income securities have call or prepayment options, which create possible reinvestment risk in declining rate environments. Other fixed income securities, such as mortgage-backed and asset-backed securities, carry prepayment risk or, in a rising interest rate environment, may not prepay as quickly as expected.

Alternatively, a decline in market interest rates could have an adverse effect on investment income as we invest cash in new investments that may earn less than our portfolio’s average yield. In a low interest rate environment, borrowers may prepay or redeem securities more quickly than expected as they seek to refinance at lower rates. Sustained low interest rates could also lead to purchases of longer-term or riskier assets in order to obtain adequate investment yields, which could also result in a duration gap when compared to the duration of liabilities. Although we attempt to take measures to manage the risks of investing in changing interest rate environments, we may not be able to mitigate interest rate or credit spread sensitivity effectively.

Our investments are subject to general economic conditions and market risks as well as risks inherent to particular securities. The success of our investments will be affected by, among other things, interest rates, availability of credit, inflation rates, economic uncertainty, changes in laws (including laws relating to taxation of our investments), market structure, trade barriers, currency exchange controls, national and international political circumstances (including wars, terrorist acts, or security operations), and the occurrence of various events (including hurricanes, earthquakes, and other natural disasters). For example, the increasing use of tariffs, economic sanctions and export controls may impact the success of our investments. The current U.S. presidential administration has recently imposed broad-based tariffs on imported goods, which could increase the cost of production and impact the success of our investments. This may also provoke responses from foreign governments that negatively impact supply chains and increase the costs for affected imported goods, which could also affect the success of our investments. As a result, U.S. markets have recently experienced significant volatility in reaction to recently announced tariffs and potential trade wars. See “Management’s discussion and analysis of financial condition and results of operation—Quantitative and qualitative disclosures about market risk.” In addition, the Utility & Infrastructure Investments portfolio is broadly concentrated in utility and infrastructure-related industries, thus exposing our investments to energy and commodity price fluctuations.

Adverse economic conditions or other factors could cause declines in the quality and valuation of our investment portfolios that would result in realized and unrealized losses. The concentration of our investment portfolios in any particular issuer, industry, collateral type, group of related industries, geographic sector, or risk type could have an adverse effect on our investment portfolios and consequently on our results of operations and financial

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condition. Prolonged and severe disruptions in the public debt and equity markets, including, among other things, volatility of interest rates, widening of credit spreads, bankruptcies, defaults, significant ratings downgrades, geopolitical instability, and a decline in equity or commodity markets, may cause significant losses in our investment portfolio. Market volatility can make it difficult to value certain securities if their trading becomes infrequent. Depending on market conditions, we could incur substantial additional realized and unrealized investment losses in future periods. This could have a material effect on certain of our investments. Further, extreme market volatility may leave us unable to react to market events in a prudent manner consistent with our historical practices in dealing with more orderly markets.

Separately, the occurrence of large claims may force us to liquidate securities at an inopportune time, which may cause us to realize capital losses. Large investment losses could decrease our asset base and thereby affect our ability to underwrite new business. Additionally, such losses could have an adverse impact on our stockholders’ equity, business and financial strength, and debt ratings.

The aggregate performance of our investment portfolio also depends to a significant extent on the ability of us and the Investment Manager, in the management of our portfolios, to select and manage appropriate investments. As a result, we are also exposed to operational risks which may include, but are not limited to, a failure of the Investment Manager to perform its services in a manner consistent with product mandates or our investment guidelines.

The market and credit risks described above could reduce our net investment income and result in realized or unrealized investment losses. Our investment portfolio is subject to increased valuation uncertainties when investment markets are illiquid. The valuation of investments is more subjective when markets are illiquid, thereby increasing the risk that the estimated fair value (i.e., the carrying amount) of the securities we hold in our portfolio do not reflect prices at which actual transactions would occur. In addition, although we seek to employ investment strategies that are not correlated with our insurance and reinsurance exposures, losses in our investment portfolio may occur at the same time as underwriting losses and, therefore, exacerbate the adverse effect of the losses on us.

We could be forced to sell investments to meet our liquidity requirements.

We invest the premiums we receive from our insureds until they are needed to pay policyholder claims. Consequently, we seek to manage the duration of our investment portfolio based on the duration of our loss and loss adjustment expense reserves to ensure sufficient liquidity and avoid having to liquidate investments to fund claims. Risks such as inadequate loss and loss adjustment reserves, unexpected sudden large losses, such as catastrophes, or unfavorable trends in litigation could potentially result in the need to sell investments to fund these liabilities. We may not be able to sell our investments at favorable prices or at all. Sales could result in significant realized losses depending on the conditions of the general market, interest rates, and credit issues with individual securities. See “—Risks related to our investment strategy—We have a limited ability to withdraw our capital from the Utility & Infrastructure Investments.”

We face risks associated with our reliance on the Investment Manager and its employees.

The performance of our investments is dependent on the ability of the Investment Manager, and more specifically, the portfolio managers of the Investment Manager, to develop and implement investment strategies that achieve the investment objectives of the accounts that they manage. If Stuart J. Zimmer ceases to be involved in the management of the Investment Manager or our other portfolios managed by the Investment Manager, the Utility Limited Partnership could be adversely affected. Mr. Zimmer is not prohibited from resigning. In addition, Mr. Zimmer has material responsibilities within the Investment Manager that are completely separate from his duties to our accounts and the Utility & Infrastructure Investments. There is no prohibition on an expansion or change to such other responsibilities. We have no special withdrawal rights if Mr. Zimmer were to cease to be involved in the management of the Investment Manager, or materially reduce his duties with respect to the Utility & Infrastructure Investments or our other portfolios managed by the Investment Manager; rather we would

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have the right to withdraw only in accordance with the withdrawal provisions detailed in the Utility Limited Partnership Agreement. See “Certain relationships and related party transactions—Investment management.”

The Utility & Infrastructure Investments and our other portfolio investments managed by the Investment Manager face operational risks from the Investment Manager’s’ management of the Utility & Infrastructure Investments and our other portfolio investments, including from misconduct by employees or service providers of the Investment Manager, which could result in material losses to our investment portfolio and, by extension, to us.

Our investment portfolio is exposed to operational risks from the Investment Manager and its employees and service providers, including from potential non-compliance with policies and regulations, employee misconduct, negligence, and fraud, each of which could result in material losses to the investment portfolio. In recent years, a number of investment managers and other financial institutions have suffered material losses due to, for example, the actions of traders executing unauthorized trades or other employee misconduct.

It is not always possible to deter or fully prevent employee misconduct and the precautions the Investment Advisers take to prevent and detect this activity may not always be effective. Any impact from the incident described above or other similar operational risks may result in material losses to our investment portfolio and, by extension, the Company.

Our investment portfolios and their performance substantially depend upon the ability of the Investment Manager to select and manage appropriate investments.

Pursuant to the investment management agreements for the fixed income accounts and the Utility & Infrastructure Investments, the Investment Manager has discretion and authority to make all investment decisions on behalf of our accounts, including the power to purchase, acquire, hold, invest, reinvest, sell, or otherwise dispose of the underlying assets or securities.

The trading strategies that the Investment Manager utilizes with respect to the Utility & Infrastructure Investments at any time may encompass a variety of techniques, both directly and derivatively, all of which may be based on any combination of systematic and discretionary analysis as determined by the Investment Manager in its sole discretion. The Utility & Infrastructure Investments are subject to all of the risks associated with the purchase and sale of complex leveraged instruments, including without limitation, the difficulty of accurately predicting price movements in particular investment positions and the difficulty of assessing the impact that an unpredictable multitude of economic and other events may have on prices or the value of investments. The Investment Manager utilizes a variety of speculative trading strategies which, if unsuccessful, could result in a complete loss of our investments. The trading and investment activities employed by the Investment Manager with respect to the Utility & Infrastructure Investments are not limited to these strategies and techniques and the Investment Manager is permitted to pursue any investment strategy and/or technique that the Investment Manager determines in its sole discretion to be appropriate for the Utility & Infrastructure Investments from time to time. We cannot assure stockholders as to how assets will be allocated to different investment opportunities, including long and short positions and derivatives trading, which could increase the level of risk associated with the Utility & Infrastructure Investments. The performance of the Utility & Infrastructure Investments depends fundamentally on the ability of the Investment Manager to select and manage appropriate investments for the Utility & Infrastructure Investments.

The Utility & Infrastructure Investments are speculative, entail substantial risks, and are subject to various conflicts of interest. There is no guarantee, assurance, or representation that the investment objectives of the Utility & Infrastructure Investments will be achieved or that the Utility & Infrastructure Investments will not result in significant losses, which consequently could significantly and negatively affect our business, results of operations, and financial condition.

In addition, under each of the Limited Partnership Agreements, each General Partner has the authority to dismiss from employment any and all agents, managers, consultants, advisors, and other persons, and has general management discretion and authority regarding the applicable Limited Partnership. Because each General Partner is an affiliate of the Investment Manager, it may have conflicts of interest with respect to decisions relating to such matters.

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Each Limited Partnership is required to indemnify and hold harmless such Limited Partnership’s General Partner and under certain circumstances, the Investment Manager pursuant to the applicable Limited Partnership Agreement. As a result, in general, we do not expect to have recourse to the Investment Manager for our losses in the event that the Investment Manager (or its affiliates) incur losses, all of which could have an adverse impact on our financial conditions and results of operations.

We have a limited ability to withdraw our capital from the Utility & Infrastructure Investments.

Because the Utility Limited Partnership Agreement limits our ability to withdraw our capital from the Utility Limited Partnership to certain specified uses without the Utility General Partner’s consent, including without limitation, to pay insurance claims, operating expenses, in each case at the end of the quarter upon 45 days written notice, and because there is no secondary market for interests in the Utility Limited Partnership, an investment in the Utility Limited Partnership has limited liquidity.

Under the MidCap Limited Partnership Agreement, we are permitted to redeem 25% of our capital in the MidCap Limited Partnership at the end of a quarter upon 75 days’ notice. After such redemption, we may withdraw the remainder of our capital in equal installments for successive calendar quarters upon at least 75 days’ notice. A withdrawal made prior to the last business day of the third full calendar quarter occurring on or after the day immediately preceding the date on which our capital contribution was made will be subject to a withdrawal reduction of 3.75% of the gross withdrawal proceeds attributable to such capital. There is no secondary market for interests in the MidCap Limited Partnership. In light of the above restrictions, an investment in the MidCap Limited Partnership has limited liquidity.

Should the Limited Partnerships be terminated by the General Partners (as applicable), all assets will be liquidated in accordance with the terms set out in the applicable Limited Partnership Agreements and we will no longer receive returns in connection with this investment. If any of the Limited Partnerships is terminated, there can be no assurance that we will be able to replace the Investment Manager as our investment manager or achieve investment results comparable or better than those achieved by such Limited Partnership.

The General Partners, the Investment Manager, and their respective affiliates have potential conflicts of interest that could adversely affect us.

The structure and operations of the Investment Manager and its affiliates (and, by extension, how the Utility & Infrastructure Investments and the fixed income accounts managed by the Investment Manager are constructed, managed, and advised) give rise to a number of actual and potential conflicts of interest which may adversely affect us.

The Investment Manager and the General Partners are both controlled by ZFSG, which is also our controlling stockholder. The Investment Manager and its affiliates currently manage, and expect to continue to manage, third-party client and proprietary accounts, some of which have objectives that overlap with the investment objectives of the Utility & Infrastructure Investments and our fixed income portfolios managed by the Investment Manager. The Investment Manager’s interests will at times conflict with our interests, which may potentially adversely affect our and the Limited Partnerships’ investment opportunities and returns. Additionally, we pay management fees to the Investment Manager pursuant to the agreements we have entered into with the Investment Manager which may be different from the fees paid by other accounts managed by the Investment Manager. See “Certain relationships and related party transactions” for more details relating to such fee arrangements.

ZFSG and its affiliates, including the Investment Manager, engage in other business ventures and investment opportunities that will not be allocated equitably among us and such other business ventures.

ZFSG and its affiliates, including the Investment Manager, participate in various financial activities and have created multiple products that employ overlapping or substantially similar strategies and/or compete for limited trading and investment opportunities but are designed to achieve materially different expected risk-reward profiles. ZFSG and its affiliates, including the Investment Manager, engage in a wide-range of investment and other financial activities, many of which are not offered to us or to our accounts that are managed by the Investment Manager.

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The Investment Manager also serves as investment manager of other investment vehicles. The Investment Manager, its principal, and its affiliates conduct investment activities for their own accounts and may serve as investment adviser, investment manager, or in a similar capacity to various other entities, co-investors, and managed accounts in the future. Situations may occur where our accounts that are managed by the Investment Manager could be disadvantaged because of the investment activities conducted by the Investment Manager for other clients due to, among other things, the limited availability of an opportunity or the market impact of orders for multiple accounts.

Additionally, decisions made by the Investment Manager on behalf of our accounts have the potential to vary materially from the decisions made by the Investment Manager and its affiliates on behalf of other clients (including its principal and its affiliates), including during times of market stress and during liquidation events. Because the Investment Manager employs the same or substantially similar strategies on behalf of many of its clients (including ZFSG and its affiliates) and because such clients often trade the same or similar instruments, the decisions made by the Investment Manager, on behalf of any individual client are likely to have a material impact on other clients. This impact is likely to be exacerbated during times of market stress and/or during liquidation events. For example, to the extent that the Investment Manager decides to liquidate or “de-lever” all or any portion of another client’s portfolio for any reason, the market’s reaction to such liquidation or deleveraging is likely to adversely affect the Utility & Infrastructure Investments or the Investment Manager’s ability to liquidate or de-lever the same or similar positions, whether or not the Investment Manager has made the independent decision to liquidate or de-lever the Utility & Infrastructure Investments.

The historical performance of the Investment Manager (including the performance of the Utility & Infrastructure Investments) should not be considered as indicative of our or the Utility & Infrastructure Investments’ future results.

The historical returns of the funds managed by the Investment Manager (including the performance of the Utility & Infrastructure Investments) are not necessarily indicative of future results. Results for the Utility & Infrastructure Investments could differ materially from the results of other funds managed by the Investment Manager. In addition, even if the Utility & Infrastructure Investments generate investment income in a given period, our overall performance could be adversely affected by losses generated by our insurance and reinsurance operations or other market dynamics. Poor performance of the Utility & Infrastructure Investments would cause a decline in our revenue and would therefore have a negative effect on our financial performance.

The ZIS Loan is a Related Party Transaction and is subject to the credit risk of an investment in ZIS and ZFSG, our parent company.

The ZIS Loan is a related party transaction. See “Certain relationships and related party transactions—Related Party Loan.” ZIS, which is a wholly-owned subsidiary of ZFSG, is the borrower under the ZIS Loan. Pursuant to the ZIS Loan, Ategrity Specialty Holdings LLC and Ategrity Ltd have provided a loan with a principal amount of $94 million to ZIS. The ZIS Loan is guaranteed by ZFSG. ZFSG is also a guarantor under the Investment Manager’s credit facility and ZFSG’s guarantee of the ZIS Loan is expressly subordinated to any and all debts, liabilities and other obligations owing to the lenders to the Investment Manager’s credit facility by its terms. The ZIS Loan is secured by the shares ZFSG holds in ZIS and certain of our shares of common stock that are held by ZFSG.

ZIS is an employee benefits business with a very limited operating history. ZIS was formed in 2023 for the purpose of providing certain business services to affiliates of ZFSG, including Ategrity. ZIS also sponsors self-insurance healthcare plans on behalf of employers, with equity capital provided by ZFSG. On October 1, 2024, ZIS commenced providing insurance and other ancillary benefits to our employees and employees of other ZFSG affiliates pursuant to such plans. In connection with its self-insurance business, ZIS collects premiums and is responsible for the payment of claims pursuant to such plans. There are certain risks associated with the self-insurance model, including the risk that claims are reported in excess of ZIS’s available reserves. ZIS’s current customers are ZFSG affiliates, including Ategrity; however, ZIS intends to expand its offerings to other employers. Our investment in the ZIS Loan is dependent on cash from operating activities of ZIS in order to service the interest and principal payments on the ZIS Loan. If ZIS were not able to service its indebtedness on the ZIS Loan, or if there were a

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default on such loan, the value of the collateral underlying the ZIS Loan may not be sufficient to cover the amount we have invested in the ZIS Loan. In the event of bankruptcy proceedings relating to ZFSG, if a bankruptcy court were to substantively consolidate ZIS obligations with such proceedings, the recovery of our security interest could be subject to court approval and the timing of such recovery may be impeded as a result. In the event we were not able to recover the full value of our investment in the ZIS Loan, it could have a material adverse effect on our financial condition or results of operations.

Risks associated with the ZIS Loan and the Investment Manager’s strategy in managing the Utility & Infrastructure Investments could be greater than the investment risks faced by some of the other insurers with whom we compete.

We have a significant amount of financial exposure to the Utility & Infrastructure Investments and the ZIS Loan. As a result, our results of operations depend materially on the performance of the Utility & Infrastructure Investments and the ZIS Loan. The ZIS Loan is concentrated exposure to the credit of ZFSG and ZIS. The ZIS Loan is secured only by the shares of ZIS held by ZFSG as well as certain of our shares owned by ZFSG. This investment may present more concentrated risk exposure than the fixed income investments of other insurers with which we compete.

The Utility & Infrastructure Investments are inherently speculative and involve certain risks. The Utility & Infrastructure Investments are made through various commingled investment vehicles that are managed on behalf of multiple clients of the Investment Manager, and not structured in relation to our specific financial objectives or anticipated insurance and reinsurance liabilities. To the extent we are required to fund these or other liabilities in meaningful amounts and/or unexpectedly, we could be forced to liquidate investments at a significant loss or at prices that are not optimal, which could significantly and adversely affect our financial results.

The risks associated with the ZIS Loan and the Investment Manager’s investment strategy could be greater than the risks associated with traditional investment strategies employed by some of the insurers with whom we compete. For example, the Absolute Return Utility & Infrastructure Fund currently employs a utility and infrastructure-focused, long/ short strategy, investing primarily in equities. Because the Absolute Return Utility & Infrastructure Fund’s investment portfolio is concentrated in utilities and infrastructure, our investment therein may be subject to more rapid change in value, including as a result of energy and commodity price fluctuations, than would be the case if the Absolute Return Utility & Infrastructure Fund were to maintain a wide diversification among securities or industry sectors. Furthermore, even within utilities and infrastructure, the investment portfolio may be relatively concentrated. This lack of diversification may subject the investments of the Absolute Return Utility & Infrastructure Fund to more rapid change in value than would be the case if the assets of the Absolute Return Utility & Infrastructure Fund were more widely diversified.

Fees to the Investment Manager are paid not only in the form of a management fee based on the amount invested in the Utility & Infrastructure Investments, but also are paid as a 20% annual incentive fee on the profits of the relevant fund at the end of each performance period. In the case of the Absolute Return MidCap Fund, such incentive fee increases to 30% above a 15% annualized return hurdle. The Investment Manager generally will not be penalized for losses or decreases in the value of the Utility & Infrastructure Investments. Therefore, the Investment Manager could be incentivized to pursue strategies that are speculative or expose us to more risk in order to focus on near-term gains rather than long-term growth, which may have an adverse impact on our financial condition, results of operations, and cash flows. Additionally, such fees may reduce the returns to our portfolio versus other possible strategies that have different fee structures or no fees at all.

The Investment Manager employs hedging for Utility & Infrastructure Investments by taking long and short positions in related instruments. Hedging against a decline in the value of a portfolio position does not eliminate fluctuations in the values of such portfolio positions or prevent losses if the values of such positions decline, but establishes other positions designed to gain from those same developments, thus seeking to moderate the decline in the value of such portfolio position. Such hedging transactions also limit the opportunity for gain if the value of the portfolio position should increase. In the event of an imperfect correlation between a position in a hedging instrument and the portfolio position that it is intended to protect, the desired protection may not be

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obtained, and the Utility & Infrastructure Investments may be exposed to risk of loss. In addition, it is not possible to hedge fully or perfectly against any risk, and hedging entails its own costs. Positions which would typically serve as hedges could actually move in the same direction as the instruments they were initially attempting to hedge, adding further risk (and losses). The Investment Manager may determine not to hedge against certain risks, and certain risks exist that cannot be hedged.

Moreover, there are likely to be an increasing number of market participants who rely on strategies and techniques that are similar to those used by the Investment Manager, which may result in a substantial number of market participants taking the same action with respect to an investment and some of these market participants may be substantially larger than our positions in the Utility & Infrastructure Investments.

In managing the Utility & Infrastructure Investments, the Investment Manager will trade on margin and use other forms of financial leverage, which could potentially adversely affect our results.

The Investment Manager employs substantial leverage with respect to the Utility & Infrastructure Investments. Such leverage is achieved by borrowing funds from U.S. and non-U.S. brokers, banks, dealers, and other lenders, purchasing or selling instruments on margin or with collateral and using options, futures, forward contracts, swaps and various other forms of derivatives, and other instruments which have substantial embedded leverage.

If any fund underlying the Utility & Infrastructure Investments can no longer utilize margin or post collateral under such lending arrangements, it could be required to liquidate a significant portion of its portfolio, and trading would be constrained, adversely affecting such fund’s performance.

Trading on leverage may result in greater risks, exposures, interest charges, and costs, which may be explicit (e.g., in the case of loans) or implicit (e.g., in the case of many derivative instruments) and such charges or costs could be substantial. The use of leverage, both through direct borrowing and through the investment in various types of instruments across a wide variety of asset classes, can substantially increase the market exposure (and market risk) to which the Utility & Infrastructure Investments are subject. Specifically, if the value of the portfolio of any fund underlying the Utility & Infrastructure Investments fell below the margin or collateral level required by a prime broker or dealer, the prime broker or dealer would require additional margin deposits or collateral amounts. If such fund were unable to satisfy such a margin or collateral call by a prime broker or dealer, the prime broker or dealer could liquidate the fund’s positions in its account with the prime broker or for which the dealer is the counterparty and cause such fund to incur significant losses. The failure to satisfy a margin or collateral call, or the occurrence of other material defaults under margin, collateral, or other financing agreements, could trigger cross-defaults under such fund’s agreements with other brokers, dealers, lenders, clearing firms, or other counterparties, multiplying the adverse impact to the fund. In addition, because the use of leverage will allow such fund control of or exposure to positions worth significantly more than the margin or collateral posted for such positions, the amount that such fund may lose in the event of adverse price movements will be high in relation to the amount of this margin or collateral amount and could exceed the value of the assets of such fund. Trading of futures, forward contracts, equity swaps, and other derivatives, for example, generally involves little or no margin deposit or collateral requirement and therefore provides substantial implicit leverage. Accordingly, relatively small price movements in these instruments (and others) can result in immediate and substantial losses.

In the event of a sudden decrease in the value of any fund underlying the Utility & Infrastructure Investments, such fund might not be able to liquidate assets quickly enough to satisfy its margin or collateral requirements. In that event, such fund would become subject to claims of financial intermediaries that extended “margin” loans or counterparty credit. Such claims could exceed the value of the assets of the fund. Trading of futures generally involves little or no margin deposit requirement and therefore provides substantial leverage. Accordingly, relatively small price movements in these instruments (and others) can result in immediate and substantial losses.

The banks, dealers, and counterparties (including prime brokers, futures commission merchants, and central clearing houses) that provide financing to the funds underlying the Utility & Infrastructure Investments can apply essentially discretionary margin, haircut, financing, and collateral valuation policies. Changes by banks, dealers, and counterparties in any of the foregoing may result in large margin calls, loss of financing, and forced liquidations

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of positions at disadvantageous times or prices. There can be no assurance that the Utility & Infrastructure Investments will be able to secure or maintain adequate financing.

We and the Investment Manager engage in short selling, which could expose us to the potential for large losses.

The investment program for the Utility & Infrastructure Investments includes a significant amount of short selling. We also engage in certain short selling of treasury securities at the holding company level. Short selling transactions expose us and the Utility & Infrastructure Investments to the risk of loss in an amount greater than the initial investment, and such losses can increase rapidly and without effective limit. Short sales can, in certain circumstances, substantially increase the impact of adverse price movements in the Utility & Infrastructure Investments. A short sale of an instrument involves the risk of a theoretically unlimited loss from a theoretically unlimited increase in the market price of the instrument, which could result in an inability to cover the short position. In addition, there can be no assurance that securities or other instruments necessary to cover a short position will be available for purchase. There is the risk that the instruments borrowed in connection with a short sale would need to be returned to the lender on short notice. If such request for return of instruments occurs at a time when other short sellers of the subject instrument are receiving similar requests, a “short squeeze” can occur, wherein the holder of the short position might be compelled, at the most disadvantageous time, to replace the borrowed instruments previously sold short with purchases on the open market, possibly at prices significantly in excess of the proceeds received earlier in originally selling the instruments short. Purchasing instruments to close out the short position can itself cause the price of the instruments to rise further, thereby exacerbating any loss. There can be no assurance that securities necessary to cover a short position will be available for purchase.

Risks related to this offering and ownership of our common stock

There is no public market for our common stock and a market may never develop.

Before this offering, there has not been a public trading market for our common stock. We have applied to list our common stock on the NYSE under the symbol “ASIC.” However, an active and liquid trading market for our common stock may not develop or be sustained after this offering. If an active and liquid trading market does not develop, you may have difficulty selling your shares of common stock at an attractive price, or at all. The initial public offering price for our common stock sold in this offering has been determined by negotiations among us and the representatives of the underwriters. This price may not be indicative of the price at which our common stock will trade after this offering. The market price of our common stock may decline below the initial public offering price, and you may not be able to sell your common stock at or above the price you paid in this offering, or at all.

Our stock price may be volatile, or may decline regardless of our operating performance, and you could lose all or part of your investment.

Our quarterly results of operations are likely to fluctuate in the future as a publicly-traded company. In addition, securities markets worldwide have experienced, and are likely to continue to experience, significant price and volume fluctuations. This market volatility, as well as general economic, market, or political conditions, could subject the market price of our shares to wide price fluctuations regardless of our operating performance. You should consider an investment in our common stock to be risky, and you should invest in our common stock only if you can withstand a significant loss and wide fluctuation in the market value of your investment. The market price of our common stock could be subject to significant fluctuations after this offering in response to the factors described in this “Risk factors” section and other factors, many of which are beyond our control. Among the factors that could affect our stock price are:

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market conditions in the broader stock market;

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actual or anticipated variations in our quarterly and annual results of operations or those of other companies in our industry;

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changes in market valuations of companies perceived to be similar to us;

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introduction of new products or services by us or our competitors;

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publication of research reports or news stories about us, our competitors, or our industry, or positive or negative recommendations or withdrawal of research coverage by securities analysts;

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results of operations or balance sheet items, such as reserves, that vary from expectations of securities analysts and investors;

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guidance, if any, that we provide to the public, any changes in this guidance or our failure to meet this guidance;

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the public’s response to our or our competitors’ filings with the SEC, press releases, or other announcements regarding acquisitions, restructurings, litigation, regulation, or other strategic actions and significant matters;

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changes in our Board of Directors, senior management, or other key personnel;

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sales of our common stock, including by our directors, executive officers, and principal stockholders;

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short sales, hedging, and other derivative transactions in our common stock;

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any indebtedness we may incur or securities we may issue in the future;

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actions by stockholders;

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changes in accounting principles;

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the occurrence of severe weather conditions and other catastrophes that affect or are perceived by investors as affecting us or our industry;

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exposure to capital and credit market risks that adversely affect our investment portfolio or our capital resources;

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investment performance;

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changes in our credit ratings; and

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the actual or anticipated passage of legislation or other regulatory developments affecting us or our industry.

The securities markets have from time to time experienced extreme price and volume fluctuations that often have been unrelated or disproportionate to the operating performance of particular companies. These broad market fluctuations, as well as general market, economic, and political conditions, such as recessions, loss of investor confidence, or interest rate changes, may negatively affect the market price of our common stock.

In addition, the stock markets, including the NYSE, have experienced extreme price and volume fluctuations that have affected and continue to affect the market prices of equity securities of many companies. If any of the foregoing occurs, it could cause our stock price to fall and may expose us to securities class action litigation that, even if unsuccessful, could be costly to defend, divert management’s attention and resources or harm our business.

If securities analysts do not publish research or reports about our business or our industry or if they issue unfavorable commentary or issue negative recommendations with respect to our common stock, the price of our common stock could decline.

The trading market for our common stock will be influenced by the research and reports that equity research and other securities analysts publish about us, our business, and our industry. We do not have control over these analysts and we may be unable or slow to attract research coverage. One or more analysts could issue negative recommendations with respect to our common stock or publish other unfavorable commentary or cease publishing reports about us, our business, or our industry. If one or more of these analysts cease coverage of us, we could lose visibility in the market. As a result of one or more of these factors, the market price of our common stock price could decline rapidly and our common stock trading volume could be adversely affected.

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Our articles of incorporation and bylaws will provide that the Eighth Judicial District Court of the State of Nevada (or if such court does not have jurisdiction, another state or the federal courts (as appropriate) located within the State of Nevada) will be the sole and exclusive forum for certain stockholder litigation matters, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, employees, or stockholders or make the litigation of such disputes more costly for stockholders.

Our articles of incorporation and bylaws will provide that, unless we consent to the selection of an alternative forum, the Eighth Judicial District Court of the State of Nevada, sitting in Clark County (or if such court does not have jurisdiction, another state or the federal courts (as appropriate) located within the State of Nevada) shall, to the fullest extent permitted by law, be the sole and exclusive forum for any actions, suits, or proceedings, whether civil, administrative, or investigative (i) brought in our name or right or on our behalf, (ii) asserting a claim for breach of any fiduciary duty owed by any of our current or former directors, officers, employees, or agents to us or our stockholders, (iii) that is an internal action (as defined in Nevada Revised Statutes (“NRS”) 78.046), including any action or claim arising under or pursuant to NRS Chapters 78 or 92A or any provision of our articles of incorporation or our bylaws, or as to which the NRS confers jurisdiction on the District Court of the State of Nevada, (iv) to interpret, apply, enforce, or determine the validity of our articles of incorporation and bylaws or any agreement entered into pursuant to NRS 78.365 to which we are a party or a stated beneficiary or (v) asserting a claim governed by the internal affairs doctrine. Section 27 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations thereunder. As a result, the exclusive forum provision in our articles of incorporation and bylaws will not apply to suits brought to enforce any duty or liability created by the Exchange Act or any other claim for which the federal courts have exclusive jurisdiction. Our articles of incorporation and bylaws will further provide that, unless we consent in writing to the selection of an alternative forum, to the fullest extent permitted by law, the federal district courts of the United States of America will be the exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act. However, Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce a duty or liability created by the Securities Act or the rules and regulations thereunder and, accordingly, we cannot be certain that a court would enforce such provision. See “Description of capital stock—Exclusive forum.”

Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and consented to the forum provisions in our articles of incorporation, except our stockholders will not be deemed to have waived (and cannot waive) compliance with the federal securities laws and the rules and regulations thereunder. This choice of forum provision may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or any of our current or former directors, officers, other employees, or stockholders which may discourage lawsuits with respect to such claims or make such lawsuits more costly for stockholders. Alternatively, if a court were to find the choice of forum provision contained in our articles of incorporation to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could harm our business, financial condition, and results of operations.

Provisions in our articles of incorporation and bylaws and Nevada law could discourage, delay, or prevent a change in control of our company and may adversely affect the trading price of our common stock.

Provisions of our articles of incorporation and bylaws and Nevada law may discourage, delay, or prevent a merger, acquisition, or other change in control that stockholders may consider advantageous, including transactions in which you would otherwise receive a premium for your shares of our common stock. These provisions may also prevent or frustrate attempts by our stockholders to replace or remove our management. These provisions will provide for, among other things:

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there is no cumulative voting in the election of our directors, which prevents the minority stockholders from electing director candidates;

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from and after such time as ZFSG and its affiliates no longer beneficially own more than 50% of the voting power of our capital stock, our board of directors will have an the exclusive right to elect a director to fill a

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vacancy created by the expansion of the board of directors or the resignation, death, or removal of a director, which prevents stockholders from being able to fill vacancies on our board of directors;

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from and after such time as ZFSG and its affiliates cease to beneficially own more than 50% of the voting power of our capital stock, actions to be taken by our stockholders may only be effected at an annual or special meeting of our stockholders and not by written consent;

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special meetings of our stockholders can be called only by the Chair of the board of directors, by our corporate secretary at the direction of our board of directors, or, until such time as ZFSG and its affiliates cease to beneficially own more than 50% of the voting power of our capital stock, the majority of the holders of our common stock;

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advance notice procedures that stockholders, other than ZFSG, must comply with in order to nominate candidates to our board of directors and propose matters to be brought before an annual meeting of our stockholders may discourage or deter a potential acquirer from conducting a solicitation of proxies to elect the acquirer’s own slate of directors or otherwise attempting to obtain control of our company;

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pursuant to Nevada law, a 662∕3% stockholder vote is required for removal of a director (with or without cause);

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from and after such time as ZFSG and its affiliates cease to beneficially own more than 50% of the voting power of our capital stock, a 662∕3% stockholder vote is required for the amendment, repeal, or modification of certain provisions of our articles of incorporation and any provisions of our bylaws; and

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our board of directors may, without stockholder approval, issue series of preferred stock, or rights to acquire preferred stock, that could dilute the interest of, or impair the voting power of, holders of our common stock or could also be used as a method of discouraging, delaying, or preventing a change of control.

The existence of the foregoing provisions and anti-takeover measures could limit the price that investors might be willing to pay in the future for shares of our common stock. They could also deter potential acquirers of our company, thereby reducing the likelihood that you could receive a premium for your common stock in an acquisition.

Certain anti-takeover provisions under Nevada law also apply to our company. We may be subject to Nevada’s statutes governing “combinations with interested stockholders” (NRS 78.411-78.444), which could prohibit us from entering into a “combination” with an “interested stockholder” for up to four years after the person first became an interested stockholder, unless certain conditions are met (for example in some circumstances, approval by our board of directors before such person became an interested stockholder, or approval by both our board of directors and a supermajority of the disinterested stockholders). Under these statutes, an interested stockholder is a person who beneficially owns (or is one of our affiliates or associates and, within the immediately prior two years, beneficially owned) stock with 10% or more of the corporation’s voting power. The inability of an interested stockholder to pursue the types of combinations restricted by these statutes could discourage, delay or prevent a merger, acquisition, or other change in control of our company. Our articles of incorporation will not opt out of NRS 78.411 through 78.444.

Further, if Nevada’s “acquisition of controlling interest” statutes (NRS 78.378-78.3793) are applicable to us, a person acquiring a significant proportion of our voting stock could be precluded from voting all or a portion of such shares under these statutes, which prohibit an acquirer of stock, under certain circumstances, from voting its “control shares” (meaning shares of outstanding voting stock that put the acquirer above certain specified ownership thresholds) acquired within 90 days immediately prior to crossing those ownership threshold percentages, unless the acquirer obtains approval of the disinterested stockholders or unless the articles of incorporation or bylaws of the issuing corporation in effect on the tenth day following the acquisition of the controlling interest provide that these statutes do not apply. If the voting rights are not approved, these statutes would allow us to call all of such control shares for redemption at the average price paid for such shares. We intend to opt out of these statutes in our bylaws with respect to acquisitions of shares by ZFSG and its affiliates.

These anti-takeover provisions could make it more difficult for a third party to acquire us even if many of our stockholders are in favor of the third party’s offer. These provisions also may have the effect of preventing changes

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in our board of directors and may make it more difficult to accomplish transactions that stockholders may otherwise deem to be in their best interests. As a result, our stockholders may be limited in their ability to obtain a premium for their shares or control our management or board.

Applicable insurance laws may make it difficult to effect a change of control.

Under applicable Delaware insurance laws and regulations, no person may acquire control of a domestic insurer until written approval is obtained from the state insurance commissioner following a public hearing on the proposed acquisition. Such approval would be contingent upon the state insurance commissioner’s consideration of a number of factors including, among others, the financial strength of the proposed acquiror, the acquiror’s plans for the future operations of the domestic insurer, and any anti-competitive results that may arise from the consummation of the acquisition of control. Delaware insurance laws and regulations pertaining to changes of control apply to both the direct and indirect acquisition of ten percent or more of the voting stock of a Delaware-domiciled insurer. Accordingly, the acquisition of ten percent or more of our common stock would be considered an indirect change of control of Ategrity Specialty and would trigger the applicable change of control filing requirements under Delaware insurance laws and regulations, absent a disclaimer of control filing and its acceptance by the Delaware Insurance Department. These requirements may discourage potential acquisition proposals and may delay, deter, or prevent a change of control of Ategrity, including through transactions that some or all of the stockholders of Ategrity might consider to be desirable. See also “Regulation—Changes of control.”

Future sales, or the perception of future sales, of our common stock may depress the market price of our common stock.

Upon completion of this offering, we will have outstanding an aggregate of 47,066,674 shares of our common stock. Of these shares, 6,666,667 shares to be sold in this offering (or 7,666,667 shares if the underwriters exercise their option to purchase additional shares in full) will be freely tradable without restriction or further registration under the Securities Act, unless such shares are held by our directors, executive officers, or any of our affiliates, as that term is defined in Rule 144 under the Securities Act (“Rule 144”). All remaining shares of common stock outstanding following this offering will be “restricted securities” within the meaning of Rule 144. Restricted securities may not be sold in the public market unless the sale is registered under the Securities Act or an exemption from registration is available. The Stockholders’ Agreement (as defined below) we enter into with ZFSG will grant certain registration rights to ZFSG and certain of its affiliates with respect to shares of our common stock. Any shares registered pursuant to such registration rights described in “Certain relationships and related party transactions” will be freely tradable in the public market following a 180-day lock-up period as described below. Sales of our common stock in the public market after this offering, or the perception that these sales could occur, could cause the market price of our common stock to decline and may make it more difficult for us to sell equity or equity-linked securities in the future at a time and at a price that we deem necessary or appropriate.

In connection with this offering, our directors, executive officers, and holders of substantially all of our outstanding capital stock have each agreed to enter into “lock-up” agreements with the underwriters and thereby be subject to a lock-up period, meaning that they and their permitted transferees will not be permitted to sell any shares of our common stock for 180 days after the date of this prospectus, subject to certain exceptions without the prior consent of the representatives of the underwriters. Although we have been advised that there is no present intention to do so, the representatives may, in their sole discretion, release all or any portion of the shares from the restrictions in any of the lock-up agreements described above. See “Underwriting.” Possible sales of these shares in the market following the waiver or expiration of such agreements could exert significant downward pressure on our stock price.

We expect that upon the consummation of this offering, our Board of Directors and our stockholders will have approved the 2025 Incentive Plan which will permit us to issue, among other things, stock options, restricted stock units, and restricted stock to eligible employees (including our named executive officers), directors, and advisors, as determined by the compensation committee of the Board of Directors. We intend to file a registration statement under the Securities Act, as soon as practicable after the consummation of this offering, to cover the

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issuance of shares upon the exercise of awards granted, and of shares granted, under the 2025 Incentive Plan. As a result, any shares issued under the 2025 Incentive Plan after the consummation of this offering also will be freely tradable in the public market. If equity securities are granted under the 2025 Incentive Plan and it is perceived that they will be sold in the public market, then the price of our common stock could decline.

Also, in the future, we may issue our securities in connection with investments or acquisitions. The amount of shares of our common stock issued in connection with an investment or acquisition could constitute a material portion of our then outstanding shares of our common stock.

ZFSG and its affiliates’ interests may conflict with our interests and the interests of our other stockholders. Conflicts of interest between ZFSG and its affiliates and us could be resolved in a manner unfavorable to us and our other stockholders.

Various conflicts of interest could arise between ZFSG and its affiliates and us. Ownership interests of directors or officers of ZFSG and its affiliates in our common stock and ownership interests of our directors and officers in the units of ZFSG and its affiliates, or a person’s service either as an employee, consultant, board observer, director, or officer of both companies, could create or appear to create potential conflicts of interest when those directors and officers are faced with decisions relating to us. These conflicts of interest could relate to:

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corporate opportunities;

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the impact that operating decisions for our business may have on ZFSG and its affiliates’ consolidated financial statements;

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differences in tax positions between ZFSG and its affiliates and us and allocations of tax benefits under a Tax Allocation Agreement between us, Ategrity Specialty, Ategrity Ltd, and ZFSG, dated April 1, 2018 (the “Tax Agreement”);

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future, potential commercial arrangements between ZFSG and its affiliates and us or between ZFSG and its affiliates and third parties;

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the fact that some of our management and other employees are also employed by, are consultants to, or serve as a board observer or director of ZFSG or its affiliates and may have conflicts of interest as a result of such dual roles;

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business combinations involving us;

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our dividend policy;

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certain board nomination and other rights granted to ZFSG and its affiliates under the Stockholders’ Agreement;

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management stock ownership; and

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the intercompany agreements between ZFSG and its affiliates and us.

Furthermore, disputes may arise between ZFSG and its affiliates and us relating to our past and ongoing relationship and these potential conflicts of interest may make it more difficult for us to favorably resolve such disputes, including those related to:

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tax, employee benefits, indemnification, and other matters;

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the nature, quality, and pricing of services ZFSG and its affiliates agree to provide to us;

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sales or other disposals by ZFSG and its affiliates of all or a portion of its ownership interest in us; and

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business combinations involving us.

We may not be able to resolve any potential conflicts, and even if we do, the resolution may be less favorable to us than if we were dealing with an unaffiliated party.

We have various contracts and other arrangements in place with ZFSG and its affiliates. Certain related party transactions with ZFSG and its affiliates will also be pre-approved by our audit committee in accordance with our

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policy concerning related party transactions to be entered into in connection with this offering. You should read “Certain relationships and related party transactions” carefully for more detail on the nature and terms of the arrangements between us and ZFSG and its affiliates. While we are controlled by ZFSG and its affiliates, we may not have the leverage to negotiate amendments to our agreements with ZFSG and its affiliates, if required, on terms as favorable to us as those we would negotiate with an unaffiliated third party.

We will be a “controlled company” within the meaning of the rules of the NYSE and, as a result, will qualify for, and rely on, exemptions from certain corporate governance requirements. You will not have the same protections afforded to stockholders of companies that are subject to such requirements.

Following the completion of this offering, ZFSG and its affiliates will continue to hold more than 50.0% of the voting power of our shares eligible to vote. As a result, we will be a “controlled company” under the rules of the NYSE. Under these rules, a company of which more than 50.0% of the voting power in the election of directors is held by an individual, group, or another company is a “controlled company” and may elect not to comply with certain corporate governance requirements, including the requirements that (i) a majority of the board of directors consist of independent directors and (ii) the board of directors have compensation and nominating and corporate governance committees composed entirely of independent directors.

Following the completion of this offering, we intend to utilize these exemptions. As a result, following the completion of this offering, we do not intend to have a majority of independent directors on our board of directors and do not intend to have a compensation, nominating, and corporate governance committee composed entirely of independent directors. Accordingly, although we may transition to a board with a majority of independent directors prior to the time we cease to be a “controlled company,” for such period of time you will not have the same protections afforded to stockholders of companies that are subject to all of the corporate governance requirements set by the NYSE. In the event that we cease to be a “controlled company” and our shares continue to be listed on the NYSE, we will be required to comply with these provisions within the applicable transition periods. These exemptions do not modify the independence requirements for our audit committee, and we intend to comply with the applicable requirements of the SEC and the NYSE with respect to our audit committee.

ZFSG and its affiliates will be able to exert significant influence over us and our corporate decisions.

Immediately following the completion of this offering, ZFSG and its affiliates are expected to own, in the aggregate, approximately 85.4% of our outstanding common stock (or approximately 83.6% if the underwriters exercise their option to purchase additional shares in full). So long as ZFSG and its affiliates owns a significant amount of our outstanding common stock, ZFSG will be able to exert significant voting influence over us and our corporate decisions, including any matter requiring stockholder approval regardless of whether others believe that the matter is in our best interests. For example, ZFSG and its affiliates will be able to exert significant influence over the vote in any election of directors and any amendment of our articles of incorporation. ZFSG and its affiliates may act in a manner that advances their best interests and not necessarily those of other stockholders, including investors in this offering, by, among other things:

•

delaying, preventing, or deterring a change in control of us;

•

delaying, preventing, or deterring a change in the composition of our management or our Board of Directors;

•

approval of the termination of the agreements described in “Certain relationships and related party transactions”; or

•

attempting to influence us to enter into transactions or agreements, including with related parties, that may not be in the best interests of all stockholders.

Substantially all of our net invested assets are managed by ZFSG through the Investment Manager. Accordingly, ZFSG and its affiliates may have a conflict of interest in managing our investments, which could increase amounts payable by us for asset management services or cause us to receive a lower return on our investments than if

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our investment portfolio was managed by another party. The investment strategies employed by the Investment Manager may expose us to more volatility and risk than more traditional insurance industry investment strategies might.

In connection with this offering, we will enter into a Stockholders’ Agreement that will grant ZFSG the right to nominate individuals to our Board of Directors (including the Chair and Vice Chair of the Board of Directors) and its committees, provided certain ownership requirements are met. See “Certain relationships and related party transactions—Stockholders’ Agreement.”

The concentration of our ownership could deprive stockholders of an opportunity to receive a premium for their common stock as part of a sale of our company, reduce liquidity in our common stock to the extent it reduces our public float, and may ultimately affect the market price of our common stock. Additionally, ZFSG currently consolidates the Company in the preparation of its financial statements and in order to continue to consolidate, ZFSG may be incentivized to maintain an ownership percentage in us above 80% for an indefinite period of time.

Our articles of incorporation will provide that ZFSG has no obligation to offer us corporate opportunities.

ZFSG and the members of our board of directors who are affiliated with ZFSG, by the terms of our articles of incorporation to be in effect upon consummation of this offering, will not be required to offer us any corporate opportunity of which they become aware and could take any such opportunity for themselves or offer it to other companies in which they have an investment, unless such opportunity is expressly offered to them solely in their capacity as our directors. We, by the terms of our articles of incorporation, expressly renounce any interest in any such corporate opportunity to the extent permitted under applicable law, even if the opportunity is one that we would reasonably be deemed to have pursued if given the opportunity to do so. Our articles of incorporation cannot be amended to eliminate our renunciation of any such corporate opportunity arising prior to the date of any such amendment. ZFSG is in the business of making investments in portfolio companies and may from time to time acquire and hold interests in businesses that compete with us, and ZFSG has no obligation to refrain from acquiring competing businesses. Any competition could intensify if an affiliate or subsidiary of ZFSG were to enter into or acquire a business similar to ours. These potential conflicts of interest could have an adverse effect on our business, financial condition, results of operations, or prospects if attractive corporate opportunities are allocated by ZFSG to itself, its portfolio companies, or its other affiliates instead of to us.

We will incur significant increased costs as a result of operating as a public company, and our management will be required to devote substantial time to new compliance initiatives.

As a public company, we will incur significant legal, accounting, and other expenses that we did not incur as a private company. After completion of this offering, we will be subject to the reporting requirements of the Exchange Act, which will require, among other things, that we file with the SEC annual, quarterly, and current reports with respect to our business and financial condition and therefore we will need to have the ability to prepare financial statements that comply with all SEC reporting requirements on a timely basis. In addition, we will be subject to other reporting and corporate governance requirements, including certain requirements of and certain provisions of the Sarbanes-Oxley Act and the regulations promulgated thereunder, which will impose significant compliance obligations upon us.

The Sarbanes-Oxley Act and the Dodd-Frank Act, as well as new rules subsequently implemented by the SEC and the NYSE, have increased regulation of, and imposed enhanced disclosure and corporate governance requirements on, public companies. Our efforts to comply with these evolving laws, regulations, and standards will increase our operating costs and divert management’s time and attention from revenue-generating activities.

These changes will also place significant additional demands on our finance and accounting staff and on our financial accounting and information systems. We may in the future hire additional accounting and financial staff with appropriate public company reporting experience and technical accounting knowledge. Other expenses associated with being a public company include increases in auditing, accounting, and legal fees and expenses, investor relations expenses, increased directors’ fees, and director and officer liability insurance costs, registrar and transfer agent fees, and listing fees, as well as other expenses. As a public company, we will be required, among other things, to:

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prepare and file periodic reports and distribute other stockholder communications, in compliance with the federal securities laws and requirements of the NYSE;

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define and expand the roles and the duties of our Board of Directors and its committees;

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institute more comprehensive compliance and investor relations functions; and

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evaluate and maintain our system of internal control over financial reporting, and report on management’s assessment thereof, in compliance with rules and regulations of the SEC and the Public Company Accounting Oversight Board.

We may not be successful in implementing these requirements and implementing them could adversely affect our business. The increased costs will decrease our net income and may require us to reduce costs in other areas of our business or increase the prices of our products or services. For example, we expect these rules and regulations to make it more difficult and more expensive for us to obtain director and officer liability insurance and we may be required to incur substantial costs to maintain the same or similar coverage. We cannot predict or estimate the amount or timing of additional costs we may incur to respond to these requirements. The impact of these requirements could also make it more difficult for us to attract and retain qualified persons to serve on our Board of Directors, our board committees, or as executive officers.

In addition, if we fail to implement the required controls with respect to our internal accounting and audit functions, our ability to report our results of operations on a timely and accurate basis could be impaired. If we do not implement the required controls in a timely manner or with adequate compliance, we may be subject to sanctions or investigation by regulatory authorities, such as the SEC or the NYSE. Any such action could harm our reputation and the confidence of investors in, and clients of, our company and could negatively affect our business and cause the price of our shares of common stock to decline.

You will incur immediate dilution as a result of this offering.

The initial public offering price is substantially higher than the net stockholders’ tangible equity per share of our common stock based on the total value of our tangible assets less our total liabilities divided by our shares of common stock outstanding immediately following this offering. Therefore, if you purchase common stock in this offering, you will experience immediate and substantial dilution in net tangible stockholders’ equity per share value after consummation of this offering. You may experience additional dilution upon future equity issuances. See “Dilution.”

We identified a material weakness in our internal control over financial reporting. We did not design an effective control over the preparation and review of the financial supplemental schedules required by Regulation S-X that accompany the consolidated financial statements that operated with sufficient precision to detect misstatements in the schedules. While we have begun to remediate the material weakness and strengthen our internal control over financial reporting processes—including that we introduced additional level reviewers, intend to add additional accounting and finance personnel in the near term to support our accounting and financial reporting function, and are implementing additional process level and management review of policies, processes and documentation procedures in anticipation of our becoming a public company—these measures may not be sufficient to remediate the material weakness. See Note 1 to the financial supplemental schedule I and Note 1 to the financial supplemental schedule II to our financial statements included elsewhere in this prospectus for additional information related to the misstatements that occurred as a result of the material weakness.

As a public company with SEC reporting obligations, we will be required to document and test our internal control procedures to satisfy the requirements of Section 404(a) of the Sarbanes-Oxley Act, which will require annual assessments by management of the effectiveness of our internal control over financial reporting. We are an emerging growth company, and thus we are exempt from the auditor attestation requirement of Section 404(b)

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of Sarbanes-Oxley until such time as we no longer qualify as an emerging growth company. See “—We qualify as an emerging growth company, and any decision on our part to comply with reduced reporting and disclosure requirements applicable to emerging growth companies could make our common stock less attractive to investors.” Regardless of whether we qualify as an emerging growth company, we will still need to implement substantial internal control systems and procedures to satisfy the reporting requirements under the Exchange Act and applicable requirements. The rules governing the standards that must be met for our management to assess our internal control over financial reporting are complex and require significant documentation, testing, and possible remediation. As a result, to comply with the requirements of being a reporting company under the Exchange Act, we may need to upgrade our information technology systems; implement additional financial and management controls, reporting systems, and procedures; and hire additional accounting and finance staff.

Testing and maintaining our internal control over financial reporting may divert management’s attention from other matters that are important to the operation of our business. We may not be able to conclude on an ongoing basis that we have effective internal control over financial reporting in accordance with Section 404(a) of the Sarbanes-Oxley Act or our auditors may not be able to provide the attestation, when required, over management’s assessment of the effectiveness of our internal control over financial reporting.

If we conclude that our internal control over financial reporting is not effective, we cannot be certain as to the timing of completion of our evaluation, testing, and remediation actions or their effect on our operations. Our failure to implement and maintain effective internal control over financial reporting could result in errors in our consolidated financial statements or schedules that could result in a restatement of our consolidated financial statements or schedules or could cause us to fail to timely meet our reporting obligations, any of which could cause investors to lose confidence in us and cause the price of our common stock to decline.

We qualify as an emerging growth company, and any decision on our part to comply with reduced reporting and disclosure requirements applicable to emerging growth companies could make our common stock less attractive to investors.

We are an “emerging growth company,” and, for as long as we continue to be an emerging growth company, we currently intend to take advantage of exemptions from various reporting requirements applicable to other public companies but not to “emerging growth companies,” including, but not limited to, not being required to have our independent registered public accounting firm audit our internal control over financial reporting under Section 404 of the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in our registration statements, periodic reports, and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. We will cease to be an emerging growth company upon the earliest of: (i) the last day of the fiscal year in which we have total annual gross revenues of $1.235 billion or more; (ii) the last day of our fiscal year following the fifth anniversary of the date of the completion of this offering; (iii) the date on which we have issued more than $1.0 billion in nonconvertible debt during the previous three years; and (iv) the date on which we are deemed to be a large accelerated filer under the rules of the SEC.

We cannot predict whether investors will find our common stock less attractive if we choose to rely on these exemptions while we are an emerging growth company. If some investors find our common stock less attractive as a result of any choices to reduce future disclosure, there may be a less active trading market for our common stock and the price of our common stock may be more volatile.

Under the JOBS Act, emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards apply to private companies. We have elected to avail ourselves of this extended transition period and, as a result, we will not be required to adopt new or revised accounting standards on the relevant dates on which adoption of such standards is required for other public companies.

We have broad discretion in the use of the net proceeds from the sale of shares by us in this offering and may not use them effectively.

Our management will have broad discretion in the application of the net proceeds from the sale of shares by us in this offering, including for any of the purposes described in the section entitled “Use of proceeds,” and you will

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not have the opportunity as part of your investment decision to assess whether the net proceeds are being used appropriately. Because of the number and variability of factors that will determine our use of the net proceeds from the sale of shares by us in this offering, their ultimate use may vary substantially from their currently intended use. Our management may not apply our net proceeds in ways that ultimately increase the value of your investment. The failure by our management to apply these funds effectively could harm our business. If we do not invest or apply the net proceeds from the sale of shares by us in this offering in ways that enhance stockholder value, we may fail to achieve expected financial results, which could cause our stock price to decline.

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Forward-looking statements

This prospectus contains forward-looking statements. These statements can be identified by the fact that they do not relate strictly to historical or current facts. You can identify forward-looking statements in this prospectus by the use of words such as “anticipates,” “estimates,” “expects,” “intends,” “plans,” and “believes,” and similar expressions or future or conditional verbs such as “will,” “should,” “would,” “may,” and “could.” These forward-looking statements include, among others, statements relating to our future financial performance, our business prospects and strategy, anticipated financial position, liquidity and capital needs, and other similar matters. These forward-looking statements are based on management’s current expectations and assumptions about future events, which are inherently subject to uncertainties, risks, and changes in circumstances that are difficult to predict.

Our actual results may differ materially from those expressed in, or implied by, the forward-looking statements included in this prospectus as a result of various factors, including, among others:

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the intense competition for business in our industry;

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the inability to obtain reinsurance coverage at reasonable prices and on terms that adequately protect us;

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the possibility that our loss reserves may be inadequate to cover our actual losses, which could have an adverse effect on our financial condition, results of operations, and cash flows;

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the inherent uncertainty of models resulting in actual losses that are materially different than our estimates;

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a decline in the financial strength rating assigned to Ategrity Specialty or to Ategrity Ltd adversely affecting the amount of business we write;

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our reliance on a select group of brokers;

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unexpected changes in the interpretation of our coverage or provisions;

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adverse economic factors, including recession, inflation, periods of high unemployment. or lower economic activity resulting in the sale of fewer policies than expected, or an increase in frequency or severity of claims and premium defaults, or both, affecting our growth and profitability;

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the performance of our investment portfolio adversely affecting our financial results;

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the potential loss of one or more key executives or an inability to attract and retain qualified personnel adversely affecting our results of operations;

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the failure of any of the loss limitations or exclusions we employ, or change in other claims or coverage issues, having a material adverse effect on our financial condition or results of operations;

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extensive regulation adversely affecting our ability to achieve our business objectives or the failure to comply with these regulations adversely affecting our financial condition and results of operations;

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the effects of litigation having an adverse effect on our business;

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the inability to manage our growth effectively;

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the ability to pay dividends and other distributions and service our debt obligations being dependent on our ability to obtain cash dividends or other permitted payments from Ategrity Specialty;

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being forced to sell investments to meet our liquidity requirements;

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our underwriters and other associates taking excessive risks;

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the possibility that severe weather conditions and other catastrophes may result in an increase in the number and amount of claims filed against us;

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the ability of ZFSG and its affiliates to exert significant influence over us and our corporate decisions;

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the failure to remediate and maintain effective internal controls in accordance with the Sarbanes-Oxley Act; and

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other risks and uncertainties discussed in “Risk factors” and elsewhere in this prospectus.

Accordingly, you should read this prospectus completely and with the understanding that our actual future results may be materially different from what we expect.

Forward-looking statements speak only as of the date of this prospectus. Except as expressly required under federal securities laws and the rules and regulations of the SEC, we do not have any obligation, and do not undertake, to update any forward-looking statements to reflect events or circumstances arising after the date of this prospectus, whether as a result of new information, future events, or otherwise. You should not place undue reliance on the forward-looking statements included in this prospectus or that may be made elsewhere from time to time by us, or on our behalf. All forward-looking statements attributable to us are expressly qualified by these cautionary statements.

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Use of proceeds

We estimate the net proceeds from the sale of shares by us in this offering will be approximately $86.2 million, based on an assumed initial public offering price of $15.00 per share of common stock, which is the midpoint of the range we show on the cover of this prospectus, and after deducting the underwriting discounts and commissions and our estimated offering expenses of $6.8 million.

A $1.00 increase (decrease) in the assumed initial public offering price of $15.00 per share would increase (decrease) the net proceeds to us from this offering by approximately $6.2 million, assuming the number of shares offered by us, which we show on the cover of this prospectus, remains the same and after deducting estimated underwriting discounts and commissions. Similarly, a 1.0 million increase (decrease) in the number of shares of our common stock sold in this offering by us, which we show on the cover of this prospectus, would increase (decrease) the net proceeds to us from this offering by approximately $13.95 million, assuming an initial public offering price of $15.00 per share, the midpoint of the price range which we show on the cover of this prospectus, remains the same, and after deducting underwriting discounts and estimated offering expenses payable by us. The information discussed above is illustrative only and will adjust based on the actual initial public offering price and other terms of this offering determined at pricing.

This expected use of net proceeds from this offering represents our intentions based on our current plans and business conditions, which could change in the future as our plans and business conditions evolve. As a result, our management will retain broad discretion over the use of the net proceeds from the sale of shares by us in this offering and our existing cash and cash equivalents.

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Dividend policy

We do not currently intend to pay cash dividends on our shares of common stock in the foreseeable future. However, in the future, subject to the factors described below and our future liquidity and capitalization, we may change this policy and choose to pay dividends or other distributions. Any determination to pay dividends or other distributions in the future will be at the discretion of our Board of Directors and will depend upon our results of operations, cash requirements, financial condition, contractual restrictions, restrictions imposed by applicable laws, and other factors that our Board of Directors may deem relevant.

Our status as a holding company and a legal entity separate and distinct from our subsidiaries affects our ability to pay dividends and make other payments. As a holding company without significant operations of our own, the principal sources of our funds are dividends and other payments from our subsidiaries. The ability of our insurance or reinsurance subsidiaries to pay dividends to us is subject to limits under insurance laws of the state or foreign jurisdiction in which Ategrity Specialty or Ategrity Ltd is domiciled. See “Risk factors—Risks related to our business and industry—Because we are a holding company and substantially all of our operations are conducted by our insurance subsidiaries, our ability to pay dividends and make other distributions and service our debt obligations depends on our ability to obtain cash dividends or other permitted payments from our insurance subsidiaries” and “Management’s discussion and analysis of financial condition and results of operations—Liquidity and capital resources” and “Regulation.”

Our future ability to pay cash dividends and other distributions may also be limited by the terms of any future debt or preferred securities or future credit facility.

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Capitalization

The following table summarizes our consolidated capitalization as of March 31, 2025:

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on an actual basis; and

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on an as adjusted basis to give effect to the Corporate Conversion and our sale of 6,666,667 shares of common stock in this offering at an assumed initial public offering price of $15.00 per share, which is the midpoint of the range we show on the cover of this prospectus, after the deduction of the estimated underwriting discounts and commissions and estimated offering expenses payable by us.

You should read this table in conjunction with the section of this prospectus entitled “Management’s discussion and analysis of financial condition and results of operations” and our financial statements and accompanying notes included elsewhere in this prospectus.

(Dollars in thousands)	Actual			As adjusted(1)(2)
Cash and cash equivalents		$	38,924		$	125,097
Members’ Equity:
LLC units (430,764,369 issued units, actual)			380,904			—
Stockholders’ Equity:
Common stock–par value $0.001 per share (500,000,000 authorized shares, as adjusted; 47,066,674 issued shares, as adjusted)			—			47
Preferred stock–par value $0.001 per share (100,000,000 authorized shares, as adjusted; zero issued shares, as adjusted)			—			—
Additional paid-in capital			—			467,030
Retained earnings			43,030			43,030
Accumulated other comprehensive income			2,883			2,883
Total members’/stockholders’ equity			426,817			512,990
Non-controlling interest			489			489
Total capitalization		$	427,306		$	513,479

(1) Does not reflect the repurchase on April 4, 2025, of 65,641 of our shares from certain shareholders for an aggregate purchase price of $0.7 million and the contribution by ZFSG on April 9, 2025, of $0.7 million in cash in exchange for the receipt of 65,641 of our shares or the repurchase on May 27, 2025, of 191,447 shares from a shareholder for an aggregate purchase price of $2.0 million and the contribution by ZFSG on May 29, 2025, of $2.0 million in cash in exchange for the receipt of 191,447 shares (in each case, which resulted in the purchase by ZFSG of the same number of shares as we repurchased from shareholders and does not have a material impact to our consolidated capitalization as a result).

(2) Each $1.00 increase (decrease) in the assumed initial public offering price of $15.00 per share, which is the midpoint of the price range set forth on the cover page of this prospectus, would increase (decrease) the as adjusted amount of each of cash and cash equivalents, total equity, and total capitalization by approximately $6.2 million, assuming that the number of shares of common stock offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us. Similarly, each increase (decrease) of million shares in the number of shares of common stock offered by us would increase (decrease) the as adjusted amount of each of cash and cash equivalents, total equity, and total capitalization by approximately $13.95 million, assuming the shares of our common stock offered by this prospectus are sold at the assumed initial public offering price of $15.00 per share, which is the midpoint of the price range set forth on the cover page of this prospectus, and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us.

The number of shares of common stock in the table above excludes:

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an aggregate of 1,079,605 shares of common stock issuable upon the exercise of Tranche 1 warrants held by ZFSG with an exercise price of approximately $31.99 per share;

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an aggregate of 375,147 shares of common stock issuable upon the exercise of Tranche 2 warrants held by ZFSG with an exercise price of approximately $21.32 per share;

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an aggregate of 4,339,808 shares of common stock issuable upon the exercise of options outstanding under the 2019 Plan as of March 31, 2025, with a weighted average exercise price of $11.94 per share;

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an aggregate of 268,292 shares of common stock reserved for issuance under the 2025 Plan, that will become effective in connection with this offering.

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Dilution

If you invest in our common stock in this offering, your ownership interest will be immediately diluted to the extent of the difference between the initial public offering price per share and the as adjusted net tangible book value per share of our common stock immediately after this offering.

Net tangible book value represents the book value of our total tangible assets less the book value of our total liabilities. As of March 31, 2025, our historical net tangible book value was $426.8 million, or $0.99 per unit. The historical net tangible book value per unit as of March 31, 2025, would have been $10.56 per share after giving effect to the conversion of our units to shares of common stock, as described herein. As adjusted net tangible book value is our net tangible book value, plus the effect of the sale by us of 6,666,667 shares of our common stock in this offering at an assumed initial public offering price of $15.00 per share, which is the midpoint of the range we show on the cover of this prospectus, and after deducting underwriting discounts and commissions and estimated offering expenses payable by us. Our as adjusted net tangible book value as of March 31, 2025 was $513.0 million, or $10.90 per share. This amount represents an immediate increase in as adjusted net tangible book value of $0.33 per share to our existing securityholders, and an immediate dilution of $4.10 per share to new investors participating in this offering. We determine dilution per share to new investors by subtracting as adjusted net tangible book value per share after this offering from the initial public offering price per share paid by new investors.

The following table illustrates the per share dilution that a purchaser of our common stock in this offering will incur given the assumptions above:

Assumed initial public offering price per share			$	15.00
Net tangible book value per share as of March 31, 2025	$	10.56
Increase in as adjusted net tangible book value per share attributable to new investors in this offering	$	0.33
As adjusted net tangible book value per share immediately after this offering			$	10.90
Dilution in as adjusted net tangible book value per share to new investors			$	4.10

A $1.00 increase (decrease) in the assumed initial public offering price of $15.00 per share, which is the midpoint of the range we show on the cover of this prospectus, would increase (decrease) the as adjusted net tangible book value per share immediately after this offering by approximately $0.13, and dilution in as adjusted net tangible book value per share to new investors by approximately $0.87, assuming that the number of shares offered by us, which we show on the cover of this prospectus, remains the same and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us.

If the underwriters exercise their option to purchase additional shares of our common stock from us to cover over-allotments, the as adjusted net tangible book value per share of our common stock would be $10.96, and the dilution in as adjusted net tangible book value per share of our common stock to new investors participating in this offering would be $4.04.

The following table summarizes, as of March 31, 2025, on an as adjusted basis as described above, the differences between the number of shares of common stock purchased from us, the total consideration paid to us, and the average price per share paid by existing securityholders and by investors purchasing shares of common stock in this offering calculated after giving effect to the conversion of our units to shares of common stock, as described herein. The calculation below is based on an assumed initial public offering price of $15.00 per share, which is the midpoint of the range we show on the cover of this prospectus, before deducting underwriting discounts and commissions and estimated offering expenses payable by us.

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	Shares Purchased				Total Consideration					Average Price Per Share
	Number		Percent		Dollars (in millions)			Percent		Average Price Per Share
Existing securityholders		40,400,007		85.8%		$	376.8		79.0%		$	9.33
New investors		6,666,667		14.2%		$	100.0		21.0%		$	15.00
Total		47,066,674		100.0%		$	476.8		100.0%

If the underwriters exercise their option to purchase additional shares in full, the number of shares held by new investors will increase to 7,666,667, or 16.0% of the total number of shares of common stock outstanding after this offering and the number of shares held by existing securityholders will decrease to 84.0% of the total number of shares of common stock outstanding after this offering.

To the extent that any options or other equity incentive grants are issued in the future with an exercise price or purchase price below the initial public offering price, new investors will experience further dilution.

The number of shares of common stock to be outstanding following this offer reflects 47,066,674 shares outstanding immediately after this offering, after giving effect to the sale of 6,666,667 shares in this offering, and excludes:

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an aggregate of 1,079,605 shares of common stock issuable upon the exercise of Tranche 1 warrants held by ZFSG with an exercise price of approximately $31.99 per share;

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an aggregate of 375,147 shares of common stock issuable upon the exercise of Tranche 2 warrants held by ZFSG with an exercise price of approximately $21.32 per share;

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an aggregate of 268,292 shares of common stock reserved for issuance under the 2025 Plan, that will become effective in connection with this offering.

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Management’s discussion and analysis of financial condition and results of operations

The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated financial statements and related notes included elsewhere in this prospectus. This discussion contains forward-looking statements that involve risks and uncertainties. See “Risk factors” and “Forward-looking statements” herein. Our actual results could differ materially from the forward-looking statements included herein. Factors that could cause or contribute to such differences include, but are not limited to, those identified below and those discussed in the section entitled “Risk factors” and elsewhere in this prospectus.

Overview

We operate our business in a single segment and as one reporting unit for purposes of assessing performance, making operating decisions and allocating decisions.

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Components of results of operations

Gross written premiums

Gross written premiums are the amount received or to be received for insurance policies written or assumed by us during a specific period of time without reduction for policy acquisition costs, reinsurance costs, or other deductions. The volume of our gross written premiums in any given period is generally influenced by:

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New business submissions;

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Binding of new business submissions into policies;

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Renewals of existing policies; and

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Average size and premium rate of new and existing policies.

Ceded written premiums

Certain premiums and losses are ceded to other insurance and reinsurance companies under various excess of loss and quota-share reinsurance contracts. Ceded written premiums are the amount of gross written premiums ceded to reinsurers. We enter into reinsurance contracts to limit our exposure to potential large losses as well as to provide additional capacity for growth. Ceded written premiums are earned over the reinsurance contract period in proportion to the period of risk covered. The volume of our ceded written premiums is impacted by the level of our gross written premiums and any decision we make to increase or decrease retention levels.

Net premiums earned

Net premiums earned represent the earned portion of our net written premiums. Written premiums are earned on a pro rata basis over the terms of the policies, which are generally 12 months. The portion of premiums written applicable to the terms of the policies that have already elapsed is recorded as earned premiums.

Fee income

Fee income includes policy fees charged to insureds and is recognized in earnings when the related premiums are written. Policy fees are a flat charge and are primarily impacted by the volume of our written policies.

Losses and loss adjustment expenses

Losses and loss adjustment expenses are a function of the amount and type of insurance contracts we write and the loss experience associated with the underlying coverage. In general, our losses and loss adjustment expenses are affected by:

•

frequency of claims associated with the particular types of insurance contracts that we write;

•

trends in the average size of losses incurred on a particular type of business;

•

mix of business written by us;

•

reinsurance agreements we have in place at the time of loss;

•

changes in the legal or regulatory environment related to the business we write;

•

trends in legal defense costs;

•

wage inflation; and

•

inflation in medical costs.

Losses and loss adjustment expenses are based on actual paid losses and an actuarial analysis of the estimated losses, including losses incurred during the period and changes in estimates from prior periods. Losses and loss adjustment expenses may be paid out over a period of years.

Underwriting, acquisition, and insurance expenses

Underwriting, acquisition, and insurance expenses include policy acquisition costs and other underwriting expenses. Policy acquisition costs are principally comprised of the commissions we pay our brokers, net of ceding commissions we receive on business ceded under certain reinsurance contracts. Policy acquisition costs also

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include deferred underwriting expenses that are directly related to the successful acquisition of those policies. Other underwriting expenses represent general and administrative expenses related to our insurance business, including employee compensation, software and technology costs, travel, marketing, and professional fees.

Net investment income

We earn investment income on our portfolio of cash and invested assets. Our cash and invested assets are primarily comprised of fixed maturity securities, the Utility & Infrastructure Investments, and cash and cash equivalents. We also earn investment income on our short-term investments, equity securities, note receivable from affiliate, and securities sold not-yet purchased. Net investment income related to the Utility & Infrastructure Investments includes our proportionate share of the rebate, dividend, interest and other income, net of investment expenses, and investment management fees for the funds underlying the Utility & Infrastructure Investments. The principal factors that influence net investment income are the size of our investment portfolio and the yield on that portfolio as measured by amortized cost (which excludes changes in fair market value, such as from changes in interest rates) and investment management expenses. The size of our investment portfolio is mainly a function of our invested equity capital along with premiums we receive from our insureds less payments on policyholder claims. For the years ended December 31, 2024 and 2023 the Utility & Infrastructure Investments consisted of our investment in the Absolute Return Utility & Infrastructure Fund via the Utility Limited Partnership. To optimize our Utility & Infrastructure Investments, we re-allocated a $10 million portion of our portfolio to the Absolute Return MidCap Fund on January 1, 2025. On March 31, 2025, Ategrity Specialty Holdings LLC and Ategrity Ltd redeemed an aggregate of $94 million from the Absolute Return Utility & Infrastructure Fund and on March 31, 2025, Ategrity Specialty Holdings LLC and Ategrity Ltd, as lenders, executed the ZIS Loan. See “Certain relationships and related party transactions—Related Party Loan.”

Net realized and unrealized gains (losses) on investments

Net realized and unrealized gains (losses) on investments include realized gains and losses which are a function of the difference between the amount received by us on the sale of a security and the security’s amortized cost, as well as the change in unrealized gains (losses) on equity securities and unrealized appreciation (depreciation) on securities sold not yet purchased. Net realized and unrealized gains (losses) on investments also includes appreciation on securities, derivative contracts, and foreign currency transactions allocated from the funds underlying the Utility & Infrastructure Investments. Such allocation represents our proportionate share of the Utility & Infrastructure Investments’ net realized gains (losses) of the funds underlying the Utility & Infrastructure Investments which are a function of the difference between the amount received on the sale of a security and the security’s amortized cost as well as change in unrealized appreciation (depreciation) on securities, derivative contracts, and foreign currency transactions. For the years ended December 31, 2023 and 2024, the Utility & Infrastructure Investments consisted of our investment in the Absolute Return Utility & Infrastructure Fund via the Utility Limited Partnership. To optimize our Utility & Infrastructure Investments, we re-allocated a $10 million portion of our portfolio to the Absolute Return MidCap Fund on January 1, 2025. On March 31, 2025, Ategrity Specialty Holdings LLC and Ategrity Ltd redeemed an aggregate of $94 million from the Absolute Return Utility & Infrastructure Fund and on March 31, 2025, Ategrity Specialty Holdings LLC and Ategrity Ltd, as lenders, executed the ZIS Loan. See “Certain relationships and related party transactions—Related Party Loan.”

Interest expense

Interest expense primarily consists of fees incurred during the period related to our letters of credit issued for the benefit of Ategrity Specialty on behalf of Ategrity Ltd. As of March 31, 2025, December 31, 2024 and December 31, 2023, there was no amount drawn on our letters of credit.

Other income

Other income includes income related to corporate activities that are not allocated to our insurance operations.

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Other expenses

Other expenses includes expenses related to corporate activities that are not allocated to our insurance operations, including expenses related to our initial public offering (which includes expenses related to corporate activities and expenses recorded by us in anticipation of this offering). Other expenses includes compensation and share-based compensation expenses associated with share-based awards granted in anticipation of our initial public offering.

Income tax expense (benefit)

Currently our income tax expense (benefit) consists mainly of federal income taxes imposed on our operations. Our effective tax rates are dependent upon the components of pretax earnings and the related tax effects. The amount of income tax expense (benefit) recorded in future periods will depend on the jurisdictions in which we operate and the tax laws and regulations in effect.

Key metrics

We discuss certain key metrics, described below, which provide useful information about our business and the operational factors underlying our financial performance.

Underwriting income is a non-GAAP financial measure. We define underwriting income as income before income taxes excluding the impact of net investment income, net realized and unrealized gains (losses) on investments, other income, interest expense, and other expenses (which include expenses relating to corporate activities and expenses recorded by us in anticipation of this offering). For a reconciliation of underwriting income to the most directly comparable GAAP financial measure, information about why we consider underwriting income useful and a discussion of the material risks and limitations of underwriting income, see “—Reconciliation of non- GAAP financial measures”.

Adjusted net income attributable to members is a non-GAAP financial measure. We define adjusted net income attributable to members as net income attributable to members, excluding certain non-operating expenses, which include expenses recorded by us in anticipation of this offering. For a reconciliation of adjusted net income attributable to members to the most directly comparable GAAP financial measure, information about why we consider adjusted net income attributable to members useful and a discussion of the material risks and limitations of adjusted net income, see “—Reconciliation of non-GAAP financial measures”.

Loss ratio, expressed as a percentage, is the ratio of losses and loss adjustment expenses to net premiums earned.

Expense ratio, expressed as a percentage, is the ratio of underwriting, acquisition, and insurance expenses less fee income to net premiums earned.

Combined ratio is the sum of loss ratio and expense ratio. A combined ratio under 100% indicates an underwriting profit. A combined ratio over 100% indicates an underwriting loss.

Return on members’ equity is net income attributable to members expressed as a percentage of average beginning and ending members’ equity during the period.

Adjusted return on members’ equity is a non-GAAP financial measure. We define adjusted return on members’ equity as adjusted net income attributable to members, expressed as a percentage of average beginning and ending members’ equity during the period. For a reconciliation of adjusted return on members’ equity to the most directly comparable GAAP financial measure, information about why we consider adjusted return on members’ equity useful and a discussion of the material risks and limitations of adjusted net income, see “—Reconciliation of non-GAAP financial measures”.

Corporate conversion

In connection with our initial public offering, Ategrity Specialty Holdings LLC will be converted from a Delaware limited liability company to a Nevada corporation and each of the units representing a limited liability interest in

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Ategrity Specialty Holdings LLC will be converted into 0.0937868 shares of common stock of the resulting corporation (the “Corporate Conversion”). Thereafter, references to “members’ equity” herein will become references to “stockholders’ equity”.

Results of operations

Three months ended March 31, 2025, compared to three months ended March 31, 2024

The following table sets forth a summary of our condensed consolidated results of operations for the periods indicated. This information should be read together with our condensed consolidated financial statements and related notes included elsewhere in this prospectus. The operating results in any period are not necessarily indicative of the results that may be expected for any future period.

	Three months ended March 31,
($ in thousands, except percentages)	2025			2024			$ Change			% Change
Gross written premiums		$	116,143		$	81,605		$	34,538	42.3%
Ceded written premiums			(26,272)			(19,349)			(6,923)	35.8%
Net written premiums			89,871			62,256			27,615	44.4%
Net premiums earned			78,301			68,278			10,023	14.7%
Fee income			560			125			435	348.0%
Losses and loss adjustment expenses			46,862			41,047			5,815	14.2%
Underwriting, acquisition and insurance expenses			24,885			23,389			1,496	6.4%
Underwriting income(1)			7,114			3,967			3,147	79.3%
Net investment income			7,895			5,253			2,642	50.3%
Net realized and unrealized gains (losses) on investments			(4,599)			2,388			(6,987)	(292.6)%
Interest expense			(447)			(550)			103	(18.7)%
Other income			965			24			941		NM
Other expenses			(238)			(54)			(184)	340.7%
Income before income taxes			10,690			11,028			(338)	(3.1)%
Income tax expense			2,240			2,070			170	8.2%
Net income		$	8,450		$	8,958		$	(508)	(5.7)%
Less: Net income attributable to non-controlling interest-General Partner			(11)			1,202			(1,213)	(100.9)%
Net income attributable to members		$	8,461		$	7,756		$	705	9.1%
Key Metrics
Adjusted net income attributable to members(1)		$	8,542		$	7,756
Loss ratio	59.8%			60.1%
Expense ratio	31.1%			34.1%
Combined ratio	90.9%			94.2%
Return on members’ equity(2)	8.2%			9.5%
Adjusted return on members’ equity(1)(2)	8.3%			9.5%

NM = Percentage change is not meaningful.

(1) Each of these metrics is a non-GAAP financial measure. See “—Reconciliation of non-GAAP financial measures” for a reconciliation of the non-GAAP financial measure to the most directly comparable GAAP measure.

(2) For the three months ended March 31, 2025 and 2024, net income attributable to members and adjusted net income attributable to members are annualized to arrive at return on members’ equity and adjusted return on members’ equity.

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Premiums

The following table presents gross written premiums by product for the three months ended March 31, 2025 and 2024:

	Three months ended March 31,
($ in thousands, except percentages)	2025			% of total		2024			% of total
Casualty		$	82,140		70.7%		$	50,506	61.9
Property			34,003		29.3%			31,099	38.1
Gross written premiums		$	116,143		100.0%		$	81,605	100.0%

Our gross written premiums were $116.1 million for the three months ended March 31, 2025 compared to $81.6 million for the three months ended March 31, 2024, an increase of approximately $34.5 million, or 42.3%. The increase was primarily driven by growth in our distribution network and increased wallet share with our existing distribution partners.

Net written premiums were $89.9 million for the three months ended March 31, 2025, compared to $62.3 million for the three months ended March 31, 2024, an increase of approximately $27.6 million, or 44.4%. The increase was primarily attributable to higher gross written premiums as well as a reduction in ceded written premiums due to a decrease in quota share reinsurance within our casualty lines.

Net premiums earned were $78.3 million for the three months ended March 31, 2025, compared to $68.3 million for the three months ended March 31, 2024, an increase of approximately $10.0 million, or 14.7%. The increase was primarily due to increased gross written premiums, offset by the effect of ceded earned premiums related to a new ceded quota share reinsurance treaty that was placed in the beginning of 2024.

With respect to breakdown by vertical, we wrote premiums in our Retail, Real Estate, Hospitality and Construction verticals of $35.5 million, $23.8 million, $21.0 million and $13.1 million, respectively, for the three months ended March 31, 2025 as compared to $27.8 million, $21.2 million, $15.3 million, and $9.7 million, respectively, for the three months ended March 31, 2024, in each case on a gross basis. Premiums grew across all our verticals primarily due to our expanded distribution network. Our premiums by vertical are presented giving effect to any subsequent changes that affect the amount of such premium in the year in which the policy was initially written. If a policy is later modified (e.g. by audit premium, endorsement, cancellation, etc.), we treat such premium amount as having been modified in the period in which such policy was initially written. Our metrics for premiums by vertical are not directly comparable to our gross written premiums in our financial statements which have been prepared in accordance with GAAP.

Fee income

Fee income was $0.6 million for the three months ended March 31, 2025 compared to $0.1 million for the three months ended March 31, 2024, an increase of approximately $0.5 million. The increase was driven by increased policy-related fees.

Loss Ratio

Our loss ratio was 59.8% for the three months ended March 31, 2025 compared to 60.1% for the three months ended March 31, 2024. The decrease was primarily driven by lower attritional losses in our property book and the lack of prior year development, offset by higher catastrophe-related losses, as compared to the three months ended March 31, 2024. We had limited exposure to the California Wildfires that occurred in January 2025, with an expected loss of less than $4 million related to such events.

Our losses paid in the three months ended March 31, 2025 and 2024 were $32.1 million and $23.9 million, respectively. During the three months ended March 31, 2025, there was no development on our net incurred losses for prior periods. For the three months ended March 31, 2024, we incurred net losses of prior accident years of

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$2.3 million. This amount was primarily due to enhancements to our claims reserving approach with respect to loss adjustment expenses in its casualty lines.

Expense ratio

The following table summarizes the components of the expense ratio for the three months ended March 31, 2025 and 2024:

	Three months ended March 31,
($ in thousands, except percentages)	2025			% of net earned premiums	2024			% of net earned premiums
Policy acquisition costs		$	14,598	18.6%			14,961	21.9%
Other operating and general expenses, net of fee income(1)			9,727	12.4%			8,303	12.2%
Underwriting, acquisition and insurance expenses, net of fee income		$	24,325	31.1%		$	23,264	34.1%

(1) Net of fee income of $560 thousand and $125 thousand for the three months ended March 31, 2025 and 2024, respectively.

Our expense ratio was 31.1% for the three months ended March 31, 2025 compared to 34.1% for the three months ended March 31, 2024. The improvement was driven by a lower policy acquisition ratio.

The decrease in policy acquisition ratio was primarily attributable to the earned impact of ceding commissions under a quota share contract placed in the beginning of 2024, and changes in our business mix.

The increase in other operating and general expenses was primarily due to an increase in compensation and employee-related expenses, as we have grown our headcount over the past twelve months to support our continued growth, drive innovation, and to strengthen our operating capabilities in anticipation of a potential initial public offering.

Investing Results

	Three months ended March 31,
($ in thousands, except percentages)	2025			2024			$ Change			% Change
Investment income
Fixed maturity securities		$	6,264		$	887		$	5,377	606.2%
Short-term investments			570			1,514			(944)	(62.4)%
Cash equivalents			436			1,992			(1,556)	(78.1)%
Equity securities			—			22			(22)	(100.0)%
Note receivable from affiliate			250			250			—	0.0%
Securities sold, not yet purchased			—			(132)			132	100.0%
Total fixed income			7,520			4,533			2,987	65.9%
Utility & Infrastructure Investments			511			726			(215)	(29.6)%
Other expenses			(136)			(6)			(130)		NM
Net investment income		$	7,895		$	5,253		$	2,642	50.3%
Net realized and unrealized gains (losses) on investments		$	(4,599)		$	2,388		$	(6,987)	(292.6)%

NM = Percentage change is not meaningful.

Net investment income was $7.9 million for the three months ended March 31, 2025, compared to $5.3 million for the three months ended March 31, 2024, an increase of $2.6 million, or 50.3%. This increase was driven by additional investments in fixed maturity securities. Included in net investment income were $0.5 million and $0.7 million attributable to Utility & Infrastructure Investments, net of investment management fees for the three months ended March 31, 2025 and 2024, respectively.

Net realized and unrealized loss on investments was $4.6 million for the three months ended March 31, 2025, compared to a net realized and unrealized gain of $2.4 million for the three months ended March 31, 2024, a decrease of $7.0 million. This decrease was primarily driven by a net realized and unrealized loss related to Utility

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& Infrastructure Investments of $7.4 million compared to a net realized and unrealized gain of $5.2 million for the three months ended March 31, 2025 and 2024, respectively.

The Utility & Infrastructure Investments produced returns, net of investment management fees, of (2.5)% and 2.4% for the three months ended March 31, 2025 and 2024, respectively.

For additional information on investment management fees related to the Utility & Infrastructure Investments see “Certain relationships and related party transactions—Investment Management—Utility & Infrastructure Investments.”

Interest expense

Interest expense was $0.4 million for the three months ended March 31, 2025 compared to $0.6 million for the three months ended March 31, 2024, a decrease of approximately $0.2 million, or 33.3% related to a decreased cost of our letters of credit.

Other income

Other income was $1.0 million for the three months ended March 31, 2025 compared to $24 thousand for the three months ended March 31, 2024, an increase of $1.0 million related to the advisory fee received from ZFSG.

Other expenses

Other expenses were $0.2 million for the three months ended March 31, 2025 compared to $0.1 million for the three months ended March 31, 2024, an increase of approximately $0.1 million primarily due to stock-based compensation expenses related to the anticipated initial public offering.

Income tax expense (benefit)

Income tax expense was $2.2 million for the three months ended March 31, 2025 compared to $2.1 million for the three months ended March 31, 2024, an increase of approximately $0.1 million. Our effective tax rate was 20.9% for the three months ended March 31, 2025 compared to 18.8% for the three months ended March 31, 2024. The increase in our effective tax rate was driven by a decrease in non-taxable pass-through income.

Year ended December 31, 2024, compared to year ended December 31, 2023

The following table sets forth a summary of our consolidated results of operations for the periods indicated. This information should be read together with our consolidated financial statements and related notes included elsewhere in this prospectus. The operating results in any period are not necessarily indicative of the results that may be expected for any future period.

	Year ended December 31,
($ in thousands, except percentages)	2024			2023			$ Change			% Change
Gross written premiums		$	437,036		$	352,591		$	84,445	23.9%
Ceded written premiums			(137,830)			(84,375)			(53,455)	(63.4)%
Net written premiums			299,206			268,216			30,990	11.6%
Net premiums earned			290,635			231,464			59,171	25.6%
Fee income			918			660			258	39.1%
Losses and loss adjustment expenses			175,234			154,107			21,127	13.7%
Underwriting, acquisition and insurance expenses			98,567			72,155			26,412	36.6%
Underwriting income(1)			17,752			5,862			11,890	202.8%
Net investment income			24,046			11,366			12,680	111.6%
Net realized and unrealized gains (losses) on investments			28,140			(2,269)			30,409		NM

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	Year ended December 31,
($ in thousands, except percentages)	2024			2023			$ Change			% Change
Interest expense			2,042			2,237			(195)	(8.7)%
Other income			95			95			—	0.0%
Other expenses			1,727			196			1,531	781.1%
Income before income taxes			66,264			12,621			53,643	425.0%
Income tax expense			12,316			2,518			9,798	389.1%
Net income		$	53,948		$	10,103		$	43,845	434.0%
Less: Net income attributable to non-controlling interest-General Partner			6,858			55			6,803		NM
Net income attributable to members		$	47,090		$	10,048		$	37,042	368.7%
Key Metrics
Adjusted net income attributable to members(1)		$	48,266		$	10,048
Loss ratio	60.3%			66.6%
Expense ratio	33.6%			30.9%
Combined ratio	93.9%			97.5%
Return on members’ equity	13.1%			3.4%
Adjusted return on members’ equity(1)	13.4%			3.4%

NM = Percentage change is not meaningful.

Premiums

The following table presents gross written premiums by product for the years ended December 31, 2024 and 2023:

	Year ended December 31,
($ in thousands, except percentages)	2024			% of total		2023			% of total
Casualty		$	263,328		60.3%		$	203,916	57.8%
Property			173,708		39.7%			148,675	42.2%
Gross written premiums		$	437,036		100.0%		$	352,591	100.0%

Our gross written premiums were $437.0 million for the year ended December 31, 2024 compared to $352.6 million for the year ended December 31, 2023, an increase of approximately $84.4 million, or 23.9%. The increase was a result of continued growth in business across our casualty and property lines.

Net written premiums were $299.2 million for the year ended December 31, 2024, compared to $268.2 million for the year ended December 31, 2023, an increase of approximately $31.0 million, or 11.6%. The increase was primarily driven by the growth in our gross written premiums partially offset by the increase in ceded written premiums primarily due to the volume of written premiums subject to ceded quota share reinsurance treaties within our casualty business.

Net premiums earned were $290.6 million for the year ended December 31, 2024, compared to $231.5 million for the year ended December 31, 2023, an increase of approximately $59.2 million, or 25.6%. The increase was primarily due to the increased gross written premiums offset by the increase of ceded written premiums under our ceded quota share reinsurance treaties.

With respect to breakdown by vertical, we wrote premiums in our Retail, Real Estate, Hospitality and Construction verticals of $129.7 million, $111.0 million, $76.2 million and $38.8 million, respectively, in 2024 as compared

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to $78.1 million, $107.9 million, $62.9 million, and $58.9 million, respectively, in 2023, in each case on a gross basis. Premiums written in our Retail and Real Estate verticals grew 66.0% and 2.9%, respectively, in 2024 as compared to 2023, with the outsized growth in Retail partially due to our focus in 2024 on capitalizing on opportunities in mixed-use real estate buildings that are included in our Retail vertical due to their retail storefronts and because 2024 was the first full year of Retail operations in our brokerage channel. Furthermore, in Real Estate, we pursued a slower growth strategy in 2024 to achieve targeted portfolio diversification. Premiums written in our Hospitality vertical grew 21.1% in 2024 as compared to 2023, which was generally in-line with our overall growth rate across verticals. Finally, premiums written in our Construction vertical declined 34.2% in 2024 as compared to 2023 due to the discontinuation of a specialized distribution relationship. Our premiums by vertical are presented giving effect to any subsequent changes that affect the amount of such premium in the year in which the policy was initially written. If a policy is later modified (e.g. by audit premium, endorsement, cancellation, etc.), we treat such premium amount as having been modified in the period in which such policy was initially written. Our metrics for premiums by vertical are not directly comparable to our gross written premiums in our financial statements which have been prepared in accordance with U.S. GAAP.

Fee income

Fee income was $0.9 million for the year ended December 31, 2024 compared to $0.7 million for the year ended December 31, 2023, an increase of approximately $0.3 million, or 39.1%. The increase was primarily driven by growth in our gross written premiums and policy count subject to fees.

Loss ratio

Our loss ratio was 60.3% for the year ended December 31, 2024 compared to 66.6% for the year ended December 31, 2023. The decrease was driven by improved results on our property lines.

Our losses paid in the years ended December 31, 2024 and 2023 were $109.5 million and $104.8 million, respectively. During the year ended December 31, 2024, our net incurred losses for prior periods increased by $5.4 million, consisting of a decrease in property reserves of $0.1 million and increase in casualty reserves of $5.5 million. The decrease in prior periods’ property reserves in 2024 was due to better-than-expected loss performance. The increase in prior periods’ casualty reserves in 2024 was comprised of favorable development for indemnity losses, which was more than offset by an increase in loss adjustment expenses due to enhancements in our claims reserving approach for legal-related expenses.

During the year ended December 31, 2023, our net incurred losses for prior periods increased by $17.2 million, consisting of an increase in property reserves of $12.5 million and an increase in casualty reserves of $4.7 million. The increase in prior periods’ property reserves was due to higher-than-expected emergence in property lines driven by catastrophes in the 2022 accident year. Specifically, Winter Storm Elliott was a freeze-event in the southeast United States on December 26, 2022 that resulted in higher severity losses from widespread water damage than originally estimated at year-end 2022, and Hurricane Ian was a catastrophic event in Florida on September 28, 2022 that resulted in higher losses than originally estimated due to re-opened and litigated claims. In 2023, we undertook a variety of risk management actions to limit the late emergence of claims from these types of events going forward. The increase in prior periods’ casualty reserves in 2023 was driven by decreases in ceded reserves due to lower expected severity on individual claims.

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Expense ratio

The following table summarizes the components of the expense ratio for the years ended December 31, 2024 and 2023:

	Year ended December 31,
($ in thousands, except percentages)	2024			% of net earned premiums		2023			% of net earned premiums
Policy acquisition costs		$	60,692		20.9%			46,201	20.0%
Other operating and general expenses, net of fee income(1)			36,957		12.7%			25,294	10.9%
Underwriting, acquisition and insurance expenses, net of fee income . . . . . . . .		$	97,649		33.6%		$	71,495	30.9%

(1) Net of fee income of $918 and $660 for the years ended December 31, 2024 and 2023, respectively.

Our expense ratio was 33.6% for the year ended December 31, 2024 compared to 30.9% for the year ended December 31, 2023. The increase was driven by 0.9% higher net policy acquisition ratio and 1.8% higher operating and general expense ratio.

The increase in policy acquisition ratio was primarily attributable to higher premium volume in our small business channel, which carries a higher acquisition cost relative to our brokerage channel. This increase was partially offset by higher ceding commissions earned under our primary quota share reinsurance treaty that was entered into on January 1, 2024.

The increase in other operating and general expenses was primarily due to higher compensation and employee-related expense, as well as professional services expenses. Compensation and employee-related expense accounted for 67% of the increase, as we grew our headcount from 111 in 2023 to 169 in 2024 to support our continued growth, drive innovation, and to strengthen our operating capabilities in anticipation of a potential initial public offering. Professional accounting and auditing service expenses accounted for 14% of the increase, driven largely by higher public accounting and consulting expenses related to preparation for a potential initial public offering.

Investing results

	Year ended December 31,
($ in thousands, except percentages)	2024			2023			$ Change			% Change
Investment income
Fixed maturity securities		$	14,296		$	1,974		$	12,322	624.2%
Short-term investments			2,703			—			2,703		NM
Cash equivalents			5,122			6,368			(1,246)	(19.6)%
Equity securities			44			—			44		NM
Note receivable from affiliate			1,002			1,002			—	0.0%
Securities sold, not yet purchased			(569)			(795)			226	28.4%
Total fixed income			22,598			8,549			14,049	164.3%
Utility & Infrastructure Investments			1,669			3,030			(1,361)	(44.9)%
Other expenses			(221)			(213)			(8)	(3.8)%
Net investment income		$	24,046		$	11,366		$	12,680	111.6%
Net realized and unrealized gains (losses) on investments		$	28,140		$	(2,269)		$	30,409		NM

NM = Percentage change is not meaningful.

Net investment income was $24.0 million for the year ended December 31, 2024, compared to $11.4 million for the year ended December 31, 2023, an increase of $12.7 million, or 111.6%. This increase was driven by the growth in our investment portfolio primarily generated from strong operating cash flows and deployment of cash equivalents that were held at the beginning of the year at higher interest rates relative to the prior year period. Included in net investment income were $1.7 million and $3.0 million attributable to Utility & Infrastructure Investments, net of investment management fees for the years ended December 31, 2024 and 2023, respectively.

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Net realized and unrealized gains on investments was $28.1 million for the year ended December 31, 2024, compared to a loss of $2.3 million for the year ended December 31, 2023, an increase of $30.4 million. This increase was primarily driven by the strong performance of our Utility & Infrastructure Investments. The income related to Utility & Infrastructure Investments was $32.4 million and $(2.6) million for the years ended December 31, 2024 and 2023, respectively.

The Utility & Infrastructure Investments produced returns, net of investment management fees, of 13.0% and 0.16% for the years ended December 31, 2024 and 2023, respectively.

Interest expense

Interest expense was $2.0 million for the year ended December 31, 2024 compared to $2.2 million for the year ended December 31, 2023, a decrease of approximately $0.2 million, or 8.7% related to the cost of our letters of credit.

Other income

Other income was $0.1 million for the year ended December 31, 2024 compared to $0.1 million for the year ended December 31, 2023, with no change year over year.

Other expenses

Other expenses was $1.7 million for the year ended December 31, 2024 compared to $0.2 million for the year ended December 31, 2023, an increase of approximately $1.5 million primarily due to additional stock-based compensation expenses related to the anticipated initial public offering.

Income tax expense (benefit)

Income tax expense was $12.3 million for the year ended December 31, 2024 compared to $2.5 million for the year ended December 31, 2023, an increase of approximately $9.8 million. Our effective tax rate was 18.6% for the year ended December 31, 2024 compared to 20.0% for the year ended December 31, 2023. The decrease in our effective tax rate was driven by permanent differences related to the non-controlling interest.

Reconciliation of non-GAAP financial measures

We report our financial results in accordance with GAAP. However, we believe that certain non-GAAP financial measures provide investors in our common stock with additional useful information in evaluating our performance. Management believes that excluding certain items that are not indicative of core performance assists in evaluating our ability to generate earnings and to more readily compare these metrics between past and future periods. These non-GAAP financial measures may be different than similarly titled measures used by other companies.

Underwriting income

We define underwriting income as income before income taxes excluding the impact of net investment income, net realized and unrealized gains (losses) on investments, other income, interest expense, and other expenses (which include expenses related to corporate activities and expenses recorded by us in anticipation of this offering). Underwriting income is a measure of the pre-tax profitability of our underwriting operations and allows us to

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evaluate our underwriting performance without regard to net investment income among other things. We use this metric as we believe it gives our management and other users of our financial information useful insight into our underlying business performance. Underwriting income should not be viewed as a substitute for income before income taxes calculated in accordance with GAAP and other companies may define underwriting income differently.

Underwriting income for the three months ended March 31, 2025 and 2024 and for the years ended December 31, 2024 and 2023 reconciles to income before income taxes as follows:

	Three months ended March 31,						Year ended December 31,
($ in thousands)	2025			2024			2024			2023
Income before income taxes		$	10,690		$	11,028		$	66,264		$	12,621
Less:
Net investment income			(7,895)			(5,253)			(24,046)			(11,366)
Net realized and unrealized (gains) losses on investments			4,599			(2,388)			(28,140)			2,269
Other income			(965)			(24)			(95)			(95)
Add:
Interest expense			447			550			2,042			2,237
Other expenses			238			54			1,727			196
Underwriting income		$	7,114		$	3,967		$	17,752		$	5,862

Adjusted net income attributable to members

We define adjusted net income attributable to members as net income attributable to members excluding certain other non-operating expenses, which include expenses recorded by us in anticipation of this offering. Adjusted net income attributable to members excludes the impact of certain items that may not be indicative of underlying business trends, operating results, or future outlook, net of tax impact. We use adjusted net income attributable to members as an internal performance measure in the management of our operations because we believe it gives our management and other users of our financial information useful insight into our results of operations and our underlying business performance. Adjusted net income attributable to members should not be viewed as a substitute for net income attributable to members calculated in accordance with GAAP, and other companies may define adjusted net income differently.

Adjusted net income attributable to members for the three months ended March 31, 2025 and 2024 and for the years ended December 31, 2024 and 2023 reconciles to net income attributable to members as follows:

	Three months ended March 31,						Year ended December 31,
($ in thousands)	2025			2024			2024			2023
Net income attributable to members		$	8,461		$	7,756		$	47,090		$	10,048
Adjustments: Other non-operating expenses(1)			103			0			1,489			—
Tax impact			(22)			0			(313)			—
Adjusted net income attributable to members		$	8,542		$	7,756		$	48,266		$	10,048

(1) In the three months ended March 31, 2025 and the year ended December 31, 2024, other non-operating expenses includes share-based compensation expenses recorded by us related to our anticipated initial public offering.

Adjusted return on members’ equity

We define adjusted return on members’ equity as adjusted net income attributable to members, expressed as a percentage of average beginning and ending members’ equity during the period. Adjusted net income attributable

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to members excludes the impact of certain items that may not be indicative of underlying business trends, operating results, or future outlook, net of tax impact. We use adjusted return on members’ equity as an internal performance measure in the management of our operations because we believe it gives our management and other users of our financial information useful insight into our results of operations and our underlying business performance. Adjusted return on members’ equity should not be viewed as a substitute for return on members’ equity calculated in accordance with GAAP, and other companies may define adjusted return on members’ equity and adjusted net income attributable to members differently.

Adjusted return on members’ equity for the three months ended March 31, 2025 and 2024 and for the years ended December 31, 2024 and 2023 reconciles to return on members’ equity as follows:

	Three months ended March 31,(1)						Year ended December 31,
($ in thousands)	2025			2024			2024			2023
Numerator: Adjusted net income attributable to members (annualized)		$	34,168		$	31,024		$	48,266		$	10,048
Denominator: Average members’ equity		$	412,562		$	326,871		$	360,002		$	297,415
Adjusted return on members’ equity	8.3%			9.5%					13.4%			3.4%

(1) For the three months ended March 31, 2025 and 2024, net income and adjusted net income are annualized to arrive at return on members’ equity and adjusted return on members’ equity.

Liquidity and capital resources

We are organized as a holding company with our operations primarily conducted by Ategrity Specialty, which is domiciled in Delaware. We may receive cash through (1) loans from banks, (2) issuance of equity and debt securities, (3) corporate service fees from Ategrity Specialty, (4) payments from our subsidiaries pursuant to the Tax Agreement (as defined herein) and other transactions, and (5) dividends from Ategrity Specialty and Ategrity Ltd. We have historically financed our operations primarily through cash from operations and contributions of capital from ZFSG. We may use the proceeds from these sources to contribute funds to Ategrity Specialty in order to support premium growth, reduce our reliance on reinsurance, to pay dividends and/or taxes, and for other business purposes. Our primary uses of cash are payments of losses and loss adjustment expenses and operating expenses.

We have two letter of credit agreements, each in the amount of $35.0 million. These letters of credit were issued to the benefit of Ategrity Specialty on behalf of Ategrity Ltd as collateral for its liabilities under the quota- share reinsurance agreement. As of March 31, 2025, no amounts were drawn on the letters of credit.

We believe that our sources of liquidity and capital, including proceeds from this offering, will be sufficient to finance our growth strategy and resulting operations, planned capital expenditures, and the additional expenses we expect to incur as a public company for at least the next twelve months. However, we cannot assure you that cash provided by operating activities or cash and cash equivalents will be sufficient to meet our future needs. If we are unable to generate sufficient cash flows from operations in the future, we may have to obtain additional financing. We may also seek additional financing to pursue acquisitions or other strategic initiatives, or in light of favorable market conditions. If we obtain additional capital by issuing equity, the interests of our existing stockholders will be diluted. If we incur additional indebtedness, that indebtedness may contain significant financial and other covenants that may significantly restrict our operations. We cannot assure you that we could obtain additional financing on favorable terms or at all. See “Risk factors—Risks related to our liquidity and access to capital—We may require additional capital in the future, which may not be available or may only be available on unfavorable terms.”

As of March 31, 2025, we held $38.9 million in cash and cash equivalents compared to $149.3 million as of March 31, 2024. As of December 31, 2024, we held $26.6 million in cash and cash equivalents compared to $264.6 million as of December 31, 2023. As of March 31, 2025, we held $739.3 million in cash and investments

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compared to $650.7 million as of March 31, 2024. As of December 31, 2024, we held $802.0 million in cash and investments compared to $631.1 million as of December 31, 2023. The maximum amount of dividends that our subsidiaries can pay us during 2025 without regulatory approval is $37.4 million. We believe the dividend distribution capacity of our subsidiaries without regulatory approval, which was estimated at $37.4 million at December 31, 2024, will provide us with sufficient liquidity for the foreseeable future.

State insurance laws restrict the ability of Ategrity Specialty to declare stockholder dividends without prior regulatory approval or non-disapproval. State insurance regulators require insurance companies to maintain specified levels of statutory capital and surplus. The maximum dividend distribution Ategrity Specialty may make absent the approval or non-disapproval of the insurance regulatory authority in Delaware is limited by Delaware law to the greater of (1) 10% of policyholder surplus as of December 31 of the previous year, or (2) net income, not including realized capital gains or pro rata distributions of any class of Ategrity Specialty’s own securities, for the previous calendar year. The Delaware statute also requires that dividends and other distributions be paid out of positive unassigned surplus without prior approval. Insurance regulators have broad powers to ensure that statutory surplus remains at adequate levels, and there is no assurance that dividends of the maximum amount calculated under any applicable formula would be permitted. In the future, state insurance regulatory authorities that have jurisdiction over the payment of dividends by Ategrity Specialty may adopt statutory provisions more restrictive than those currently in effect.

Under the Insurance Act and related regulations, Ategrity Ltd is required to maintain certain solvency and liquidity levels, which it maintained as of March 31, 2025. Bermuda regulations limit the amount of dividends and return of capital paid by a regulated entity. Furthermore, the Insurance Act limits the ability of Ategrity Ltd to pay dividends or make capital distributions by stipulating certain margin and solvency requirements and by requiring approval from the BMA prior to a reduction of 15% or more of a Class 3A insurer’s total statutory capital as reported on its prior year statutory balance sheet. Further, under the Companies Act, as amended (the “Companies Act”), Ategrity Ltd may only declare or pay a dividend, or make a distribution out of contributed surplus, if it has no reasonable grounds for believing that: (1) it is, or would after the payment be, unable to pay its liabilities as they become due, or (2) the realizable value of its assets would be less than its liabilities.

See “Regulation” contained elsewhere herein for additional details on such restrictions.

Cash flows

Our most significant source of cash is from premiums received from our insureds, which, for most policies, we receive at the beginning of the coverage period. Our most significant cash outflow is for claims that arise when a policyholder incurs an insured loss. Because the payment of claims occurs after the receipt of the premium, often years later, we invest the cash in various investment securities that earn interest and dividends. We also use cash to pay commissions to brokers, as well as to pay for ongoing operating expenses such as salaries, rent, taxes, and interest expense. We use reinsurance to manage the risk that we take on our policies. We cede, or pay out, part of the premiums we receive to our reinsurers and collect cash back when losses subject to our reinsurance coverage are paid.

The timing of our cash flows from operating activities can vary among periods due to the timing by which payments are made or received. Some of our payments and receipts, including loss settlements and subsequent reinsurance receipts, can be significant, so their timing can influence cash flows from operating activities in any given period. Management believes that cash receipts from premiums, proceeds from investment sales and redemptions, and investment income are sufficient to cover cash outflows in the foreseeable future.

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The following table set forth a summary of our cash flows for the periods indicated:

	Three months ended March 31,						Year ended December 31,
($ in thousands)	2025			2024			2024			2023
Net cash provided by operating activities		$	20,955		$	34,931		$	125,611		$	85,707
Net cash (used in) provided by investing activities			(21,747)			(149,852)			(363,270)			14,512
Net cash (used in) provided by financing activities			13,143			(414)			(414)			32,275
Net increase (decrease) in cash, cash equivalents, and restricted cash		$	12,351		$	(115,335)		$	(238,073)			132,494

Operating activities

Our net cash provided by operating activities was approximately $21.0 million for the three months ended March 31, 2025, compared to $34.9 million for the three months ended March 31, 2024. The decrease was primarily due to a larger settlement of reinsurance payable related to increased quota share reinsurance.

Our net cash provided by operating activities was approximately $125.6 million for the year ended December 31, 2024, compared to $85.7 million for the year ended December 31, 2023. The increase was primarily due to growth in our gross premiums written.

Investing activities

Net cash used in investing activities was approximately $21.7 million for the three months ended March 31, 2025, compared to net cash used in investing activities of approximately $149.9 million for the three months ended March 31, 2024. The decrease in cash used in investing activities was primarily driven by a significant deployment of excess cash balances into short term investments during the three months ended March 31, 2024.

Net cash used in investing activities was approximately $363.3 million for the year ended December 31, 2024, compared to net cash provided by investing activities of approximately $14.5 million for the year ended December 31, 2023. The increase in cash used by investing activities was primarily driven by increased cash flows from operations which were used to purchase fixed maturity securities and short-term investments as well as deployment of the cash equivalents that were held at the beginning of the year, offset by proceeds from sales, maturities and redemptions of fixed maturity securities.

Financing activities

Net cash provided by financing activities was approximately $13.1 million for the three months ended March 31, 2025, compared to cash used in financing activities of $0.4 million for the three months ended March 31, 2024, which consisted primarily of a capital contribution from ZFSG, partially offset by the payment of accrued carried interest to the Utility General Partner.

Net cash used in financing activities was approximately $0.4 million for the year ended December 31, 2024, compared to $32.3 million for the year ended December 31, 2023, which consisted primarily of a capital contribution from ZFSG.

Reinsurance

We enter into reinsurance contracts to limit our exposure to potential large losses and to provide additional capacity for growth. Our reinsurance is primarily contracted under quota-share reinsurance treaties and excess of loss treaties. In quota-share reinsurance, the reinsurer agrees to assume a specified percentage of the ceding company’s losses arising out of a defined class of business in exchange for a corresponding percentage of premiums, net of a ceding commission. In excess of loss reinsurance, the reinsurer agrees to assume all or a portion of the ceding company’s losses, in excess of a specified amount. In excess of loss reinsurance, the premium

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payable to the reinsurer is negotiated by the parties based on their assessment of the amount of risk being ceded to the reinsurer because the reinsurer does not share proportionately in the ceding company’s losses.

For the three months ended March 31, 2025 and for the year ended December 31, 2024, property insurance represented 29.3% and 39.7%, respectively, of our gross written premiums. When we write property insurance, we buy reinsurance to significantly mitigate our risk to large losses. We use sophisticated computer models to analyze the risk of severe losses from weather-related events and earthquakes. We measure exposure to these catastrophe losses in terms of PML, which is an estimate of what level of loss we would expect to experience in a windstorm or earthquake event occurring once in every 100 or 250 years. We manage this PML by purchasing catastrophe reinsurance coverage. Effective July 1, 2024, we purchased catastrophe reinsurance coverage of $48 million per event in excess of our $12 million per event retention. Our property catastrophe reinsurance includes a reinstatement provision which requires us to pay reinstatement premiums after a loss has occurred in order to preserve coverage. Including the reinstatement provision, the maximum aggregate loss recovery limit is $96 million and is in addition to the coverage provided by our other property reinsurance.

Reinsurance contracts do not relieve us from our obligations to policyholders. Failure of the reinsurer to honor its obligation could result in losses to us, and therefore, we established an allowance for credit risk based on historical analysis of credit losses for highly rated companies in the insurance industry. The Company evaluates the financial condition of its reinsurers and monitors concentration of credit risk arising from its exposure to individual reinsurers. As of December 31, 2024, Ategrity Specialty has only contracted with reinsurers with A.M. Best financial strength ratings of “A-” (Excellent) or better. At December 31, 2024, the net reinsurance receivable, defined as the sum of paid and unpaid reinsurance recoverables, ceded unearned premiums less reinsurance payables, from five reinsurers represented 58.4% of the total balance. At each of March 31, 2025 and December 31, 2024, we recorded an allowance for credit losses of $0 related to our reinsurance balances.

Ratings

Ategrity Specialty and Ategrity Ltd both have a financial strength rating of “A-” (Excellent) from A.M. Best. A.M. Best assigns 16 ratings to insurance companies, which currently range from “A++” (Superior) to “F” (In Liquidation). “A-” (Excellent) is the fourth highest rating issued by A.M. Best. The “A-” (Excellent) rating is assigned to insurers that have, in A.M. Best’s opinion, an excellent ability to meet their ongoing obligations to policyholders. This rating is intended to provide an independent opinion of an insurer’s ability to meet its obligation to policyholders and is not an evaluation directed at investors. See also “Risk factors—Risks related to our business and industry—A decline in the financial strength rating or financial size category assigned to Ategrity Specialty or to Ategrity Ltd may adversely affect the amount of business we write and thus our business, financial condition, and results of operation.”

The financial strength ratings assigned by A.M. Best have an impact on the ability of the insurance companies to attract and retain agents and brokers and on the risk profiles of the submissions for insurance that the insurance companies receive. The “A-” (Excellent) rating obtained by Ategrity Specialty is consistent with our business plan and allows us to actively pursue relationships with the agents and brokers identified in our marketing plan.

Contractual obligations and commitments

Our gross reserves for losses and loss adjustment expenses at March 31, 2025 were $421.5 million, of which $146.0 million of payments are expected to be paid in less than one year and $275.5 million of payments are expected to be paid in one year or more. Reserves for losses and loss adjustment expenses represent our best estimate of the ultimate cost of settling reported and unreported claims and related expenses. The estimation of loss and loss expense reserves requires a high degree of judgment and is subject to a number of variables. Ultimate settlement of losses and related loss adjustment expenses may vary significantly from the estimates reflected in our consolidated financial statements. See Note 10 of the notes to the consolidated financial statements and “—Critical accounting policies and estimates” for a discussion of estimates and assumptions related to the reserves for unpaid losses and loss adjustment expenses.

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Our leases consist of one operating lease on our office space that expires in 2028 and is subject to a renewal option at market rates prevailing at the time of renewal. We became a sublessor of the same office space when it entered into a sublease agreement effective July 1, 2022 with ZFSG. Our obligations under such lease will require us to pay approximately $0.8 million per year for the life of the lease. We do not have any other contractual obligations and commitments.

Financial condition

Members’ equity

As of March 31, 2025, total members’ equity was $426.8 million compared to $398.3 million total members’ equity as of December 31, 2024. The $28.5 million increase in total members’ equity over the prior year end balance was primarily driven by net profits generated during the period and a $20.0 million contribution by ZFSG.

As of December 31, 2024, total members’ equity was $398.3 million compared to $321.7 million total members’ equity as of December 31, 2023. The $76.6 million increase in total members’ equity over the prior year end balance was primarily driven by net profits generated during the period and a $20.1 million contribution by ZFSG.

Declaration of Dividends or Other Distributions

We did not declare any dividends or other distributions during the three months ended March 31, 2025 and 2024 or the years ended December 31, 2024 and 2023. We do not anticipate paying any dividends or other distributions in the foreseeable future. Any determination to pay dividends or other distributions in the future will be at the discretion of our board of directors, subject to applicable laws. See “Dividend Policy” contained elsewhere herein.

Investment portfolio

Our cash and invested assets consist of fixed maturity securities, cash and cash equivalents, short-term investments, equity securities, note receivable from affiliate, and the Utility & Infrastructure Investments.

The table below presents our cash and invested assets as of March 31, 2025 and December 31, 2024 and 2023:

	March 31,				December 31,
	2025				2024				2023
($ in thousands, except percentages)	Fair value			% of total	Fair value			% of total	Fair value			% of total
Cash and cash equivalents		$	38,924	5.3%		$	26,573	3.3%		$	264,646		41.9%
Fixed maturity securities			457,416	61.9%			438,752	54.7%			98,200		15.6%
Short-term investments			53,154	7.2%			52,612	6.6%			—		0.0%
Utility & Infrastructure Investments			176,039	23.8%			270,242	33.7%			253,045		40.1%
Equities			—	0.0%			—	0.0%			1,000		0.2%
Note receivable from affiliate			13,501	1.8%			13,501	1.7%			13,501		2.1%
Other Invested assets			280	NM			280	NM			694		0.1%
Total cash and invested assets		$	739,314	100.0%		$	801,960	100.0%		$	631,086		100.0%

NM = Percentage not meaningful.

At March 31, 2025, December 31, 2024 and December 31, 2023, $38.9 million, $26.6 million and $264.6 million, respectively, represented the cash and cash equivalents portion of our total cash and invested assets of $739.3 million, $802.0 million and $631.1 million, respectively. As of April 1, 2025, the $94 million ZIS Loan is recorded as an invested asset and was included in receivable from affiliate as of March 31, 2025. See “Certain relationships and related party transactions—Related Party Loan.”

At March 31, 2025, December 31, 2024 and December 31, 2023, $457.4 million, $438.8 million, and $98.2 million, respectively, of our total cash and invested assets was comprised of fixed maturity securities that are

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classified as available-for-sale and carried at fair value with unrealized gains and losses on these securities, net of any deferred taxes, reported as a separate component of accumulated other comprehensive income. Also included in our investment portfolio at March 31, 2025 and December 31, 2024, were $53.2 million and $52.6 million of short-term investments. Our fixed maturity and short-term securities had a weighted average duration of 3.5 years, 3.8 years and 3.0 years, respectively, and an average rating of “A-”, “A-” and “A”, respectively, at March 31, 2025, December 31, 2024 and 2023, respectively. Our fixed maturity and short-term securities portfolio had a book yield of 5.7% at March 31, 2025 and 5.7% at December 31, 2024, compared to 2.9% at December 31, 2023.

At March 31, 2025, the amortized cost and fair value of our fixed maturity securities and short-term investments were as follows:

	As of March 31, 2025
($ in thousands, except percentages)	Amortized cost			Estimated fair value			% of total fair value
Fixed maturity securities:
U.S. Treasury securities and obligations guaranteed by the U.S. government		$	84,034		$	84,313		16.5%
Corporate			368,935			372,360		72.9%
Commercial mortgage and asset-backed securities			789			743		0.1%
Total fixed maturity securities		$	453,758		$	457,416		89.6%
Short-term investments			53,154			53,154		10.4%
Total		$	506,912		$	510,570		100.0%

At December 31, 2024, the amortized cost and fair value of our fixed maturity securities and short-term investments were as follows:

	As of December 31, 2024
($ in thousands, except percentages)	Amortized cost			Estimated fair value			% of total fair value
Fixed maturity securities:
U.S. Treasury securities and obligations guaranteed by the U.S. government		$	84,456		$	84,195		17.1%
Corporate			349,693			353,805		72.0%
Commercial mortgage and asset-backed securities			816			752		0.2%
Total fixed maturity securities		$	434,965		$	438,752		89.3%
Short-term investments			52,612			52,612		10.7%
Total		$	487,577		$	491,364		100.0%

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At December 31, 2023, the amortized cost and fair value of our fixed maturity securities and short-term investments were as follows:

	As of December 31, 2023
($ in thousands, except percentages)	Amortized cost			Estimated fair value			% of total fair value
Fixed maturity securities:
U.S. Treasury securities and obligations guaranteed by the U.S. government		$	68,583		$	66,985		68.2%
Corporate			12,331			11,294		11.5%
Commercial mortgage and asset-backed securities			22,875			19,921		20.3%
Total fixed maturity securities		$	103,789		$	98,200		100.0%
Short-term investments			—			—		0.0%
Total		$	103,789		$	98,200		100.0%

The amortized cost and fair value of our available-for-sale investments in fixed maturity securities summarized by contractual maturity as of March 31, 2025, were as follows:

	March 31, 2025
($ in thousands, except percentages)	Amortized cost			Estimated fair value			% of Fair value
One year or less		$	15,694		$	15,857		3.5%
After one year through five years			255,388			257,716		56.3%
After five years through ten years			163,402			164,908		36.1%
After ten years			18,485			18,192		4.0%
Commercial and residential mortgage-backed and other asset-backed			789			743		0.2%
Total fixed maturity securities		$	453,758		$	457,416		100.0%

Actual maturities may differ from contractual maturities because some borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

At March 31, 2025, December 31, 2024 and December 31, 2023, $165.9 million, $270.4 million and $253.0 million, respectively represented the investments in the Absolute Return Utility & Infrastructure Fund with fair values measured using our interest in the unadjusted net asset value (“NAV”) as reported by the Investment Manager in the audited financial statements of the Absolute Return Utility & Infrastructure Fund. The Utility Limited Partnership operates as a feeder fund in a “master-feeder” structure, in which the Utility Limited Partnership invests substantially all of its assets in the Absolute Return Utility & Infrastructure Fund. At March 31, 2025, December 31, 2024 and December 31, 2023, we invested 22%, 34% and 40%, respectively, of our total cash and invested assets in the Absolute Return Utility & Infrastructure Fund through the Utility Limited Partnership.

The Absolute Return Utility & Infrastructure Fund investment objective is to employ an energy and infrastructure- focused long/short strategy which seeks to deliver absolute returns in all market conditions with minimal correlation to energy sector indices and broader market indices. The Absolute Return Utility & Infrastructure Fund invests primarily in the equities of electric and gas utilities, integrated utilities, water utilities, telecommunication companies, independent power producers and pipelines, exploration and production companies, oilfield service companies, and more broadly in energy and infrastructure-related industries (such as chemicals, materials, transportation infrastructure, and real estate equities). We value our investment in the Absolute Return Utility & Infrastructure Fund at fair value, which is estimated based on our share of the NAV of the Absolute Return Utility & Infrastructure Fund, as provided by the Investment Manager. See Note 2 to our consolidated financial statements appearing elsewhere in this prospectus.

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The Absolute Return Utility & Infrastructure Fund invests in equity securities and related instruments and derivatives, and fixed income, comprising 95.6% and 4.4%, and 94.4% and 5.6% of gross investments, respectively, as of March 31, 2025, and December 31, 2024. As of March 31, 2025, December 31, 2024 and December 31, 2023, the following table summarizes the sectors of the Absolute Return Utility & Infrastructure Fund’s gross assets:

	As of March 31,		As of December 31,
	2025		2024		2023
($ in thousands, except percentages)	% of total(1)		% of total(1)		% of total(1)
Utilities		59.1%		60.6%		65.3%
Pipelines		24.0%		20.0%		17.6%
Real Estate		7.4%		10.1%		8.9%
Other Sectors		9.5%		9.3%		8.2%
Total		100.0%		100.0%		100.0%

(1) Amounts presented are subject to rounding adjustments and, as a result, the totals may not sum.

Off-balance sheet arrangements

We invest in certain financial instruments with off-balance sheet risk. These financial instruments include securities sold, not yet purchased. Generally, these financial instruments represent future commitments to purchase other financial instruments at specific terms at specified future dates. These financial instruments contain varying degrees of off-balance sheet risk whereby changes in the market values of the securities underlying the financial instruments or index values may exceed the amounts recognized in the balance sheet.

From time to time we enter into short sales as a hedge against certain risks within our investment strategy. A short sale is a transaction in which we sell securities we do not own in anticipation of a decline in the market price of the securities and our clearing broker executes a borrow transaction to deliver the securities resulting from our short sale. We are obligated to replace the securities borrowed in connection with a short sale.

Securities sold, not yet purchased represent our obligations to make future delivery of specific securities and, to the extent that we do not already have the securities in its possession, correspondingly create an obligation to purchase the securities at prevailing market prices. Accordingly, these transactions result in off-balance sheet risk as our satisfaction of the obligations may exceed the amount recognized in the balance sheet. As of March 31, 2025 and December 31, 2024, our obligations relating to short sales were $0 and $0.9 million, respectively. Cash related to short sales is restricted until the securities are purchased. The ultimate gain or loss depends upon the prices at which the securities are purchased to settle our obligations.

See Note 6 of our annual consolidated financial statements included elsewhere in this prospectus for additional details. As of March 31, 2025 and December 31, 2024, we did not have any other off-balance sheet arrangements.

Share-Based Compensation

Share-based compensation represents the cost of the estimated grant date fair value of option awards amortized over the requisite service period of the awards on a straight-line basis for awards that are subject to a service condition and using a graded vesting attribution method for awards that are subject to a service condition and a performance condition. We estimate the fair value of all option award grants using the Black- Scholes option pricing model and recognize forfeitures as they occur.

Estimating the fair value of equity awards at the grant date using valuation models, such as the Black-Scholes option pricing model, is affected by assumptions regarding a number of complex variables, including:

•

Fair value of unit. See the subsection titled “—Determination of Fair Value of Our Units” below

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Expected term. The expected term represents the period that our option awards granted are expected to be outstanding and is determined as the period from the valuation date to the expected exit or liquidity event date.

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Expected volatility. Because we do not have any trading history for our units, the expected volatility is estimated using averages of the historical volatility of our peer group of companies for a period equal to the expected term of the option awards granted. Our peer group of companies was selected based on operational and economic similarities to us and factors included, but were not limited to, industry, business model, operations, geographic presence, products, financial size and performance, share liquidity and management recommendations regarding the most similar companies.

•

Risk-free interest rate. The risk-free interest rate is based on the interest rates paid on securities issued by the U.S. Treasury with a term approximating the expected term of option awards granted.

•

Expected dividend. We have never paid cash dividends and have no present intention of doing so in the foreseeable future. Therefore, the expected dividend yield was assumed to be zero.

Changes in the foregoing assumptions can materially affect the estimate of fair value and ultimately how much share-based compensation cost is recognized; and the resulting change in fair value, if any, is recognized in our statements of operations during the period the related services are rendered. These inputs are subjective and generally require significant analysis and judgment to develop.

See Notes 2 and 16 to our annual audited financial statements included elsewhere in this prospectus for information concerning certain of the specific assumptions we used in applying the Black-Scholes option pricing model to determine the estimated fair value of our option awards.

The intrinsic value of each incentive option is determined based on the difference between the fair value of the underlying unit and the exercise price of the underlying incentive option. The aggregate intrinsic value of options outstanding and exercisable was $0 as of each of March 31, 2025, December 31, 2024 and December 31, 2023. Assuming an initial public offering price of $15.00 per share, which is the midpoint of the range we show on the cover of this prospectus, the intrinsic value of such options as of March 31, 2025, would have been $19.5 million, of which approximately $10.4 million relates to vested options and approximately $9.1 million relates to unvested options.

Determination of Fair Value of Our Units

Share-based compensation related to share-based awards is recognized based on the fair value of the awards granted. As there has been no public market for our units to date, the estimated fair value of our units underlying such awards has been determined by our board of managers as of each grant date, with input from management, consideration of independent third-party valuations of our units and the board of managers’ assessment of additional objective and subjective factors that it believed were relevant at that time, including, as applicable:

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Our actual and forecasted operating and financial performance based on management’s estimates;

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lack of marketability of our units;

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the hiring and retention of key personnel;

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industry trends and competitive environment;

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the likelihood of achieving a liquidity event, such as an initial public offering or the sale of the Company given prevailing market conditions;

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overall economic indicators; and

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the general economic outlook.

The amount of shares underlying options herein have been presented giving effect to the 0.0937868-for-1 conversion of each of the outstanding units of Ategrity Specialty Holdings LLC in connection with the Corporate Conversion. The following table summarizes share-based compensation awards granted since January 1, 2024:

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Grant Date	Type of Award		Number of Shares Underlying Equity Awards Granted		Exercise Price per Share			Per Share Fair Value of Shares on Grant Date			Estimated Fair Value Per Option
January 1, 2024		Options		386,870		$	10.66		$	5.86		$	0.53
January 1, 2024		Options		281,360		$	21.32		$	5.86		$	0.11
January 1, 2024		Options		281,360		$	31.99		$	5.86		$	0.11
December 8, 2024		Options		2,541,407		$	9.38		$	7.89		$	2.35
December 8, 2024		Options		14,068		$	10.66		$	7.89		$	2.13
December 8, 2024		Options		77,960		$	10.66		$	7.89		$	2.13
December 8, 2024		Options		93,787		$	10.66		$	7.89		$	2.13
December 20, 2024		Options		400,875		$	10.66		$	7.89		$	1.71
December 20, 2024		Options		178,298		$	10.66		$	7.89		$	2.13

Third-party valuations indicated a valuation of our shares of $7.89 and $5.86 as of December 8, 2024 (the “December 2024 Valuation”) as a basis for our option grants in December 2024 and January 1, 2024 (the “January 2024 Valuation”) as a basis for our grants in January 2024, respectively. Independent third-party valuations were performed in accordance with the guidance outlined in the American Institute of Certified Public Accountants Accounting and Valuation Guide, Valuation of Privately Held Company Equity Securities Issued as Compensation (the “Practice Guide”). The Practice Guide prescribes several valuation approaches for determining the value of an enterprise and various methodologies for allocating the value of an enterprise to its capital structure and, specifically, its common equity. The December 2024 Valuation and the January 2024 Valuation used the guideline public company method (“GPC method”) to estimate the total equity value and the Hybrid Method (as defined below) to allocate the total equity value between the units. Within the Hybrid Method, we considered scenarios using the Probability-Weighted Expected Return Method (“PWERM”), with the Option Pricing Method (the “OPM”) within each scenario.

The GPC method estimates enterprise value based on a comparison of the Company to comparable public companies in a similar line of business and generally applies representative valuation ratios, which relate market prices to selected financial statistics derived from the comparable companies, to the subject company after consideration of adjustments for financial position, growth, markets, profitability, reinvestment needs, risk and other factors.

The PWERM is a scenario-based methodology that estimates the fair value of the units based upon an analysis of future values for the company, assuming various outcomes. The unit value is based on the probability-weighted present value of expected future investment returns considering each of the possible outcomes available as well as the rights of each class of capital stock. The future value of the units under each outcome is discounted back to the valuation date at an appropriate risk-adjusted discount rate and probability weighted to arrive at an indication of value for the units.

The OPM involves estimating the fair value by considering various call options, each valued using the Black-Scholes option pricing model at a series of exercise prices that coincide with the liquidation preferences and conversion features of units of members’ equity. Within the OPM, our total equity value was determined using the market approach, based on the GPC method, weighted at 100%, with input from management, and applying the valuation multiples derived from the GPC method to our forecasted book value and earnings.

The Hybrid Method is a hybrid between the PWERM and OPM (the “Hybrid Method”), estimating the probability-weighted value across multiple scenarios, using the OPM to estimate the allocation of value within those scenarios. When using the hybrid method, the third party valuations considered two future-event scenarios: (i) an initial public offering scenario and (ii) a private sale scenario. The initial public offering scenario and private sale scenario used a GPC method approach to estimate the fair value of our equity and allocated to each share class using an OPM based on the time to liquidity in the respective scenario. The resulting share values under each scenario are

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weighted by their respective probabilities. This hybrid method was determined to be the most appropriate valuation methodology based on the Company’s stage of development and other relevant factors.

Lastly, a discount for lack of marketability (“DLOM”) was applied in each case in order to reflect the lack of a recognized market for our units and the fact that a non-controlling equity interest may not be readily transferable. The DLOM was estimated based on, among other factors, put option models, the nature of our operations and related risks, and the severity of the restrictions on liquidity of our units.

The range we show on the cover of this prospectus was derived by a quantitative and qualitative analysis that differed from the methodology used by the Company and its independent valuation specialist in determining grant date fair value as described above. We believe that the primary factors that account for the difference between the fair value of our units determined as of December 2024 and the range we show on the cover of this prospectus are:

•

the range we show on the cover of this prospectus is based only upon a scenario in which we complete the initial public offering and is not probability-weighted, in contrast to the December 2024 Valuation, which reflects the potential for alternative future events, which inherently decreases the estimated fair value per share due to the combination of (i) events other than the initial public offering scenario, (ii) the discount to present value for each of the future business values at the future event and (iii) the application of a DLOM;

•

the quantitative methodologies used for the valuations obtained by management to determine the estimated fair value of our units may differ from the methodologies used by public market investors, which may also employ more qualitative and subjective methodologies to determine the price that they are willing to pay in the initial public offering, such as the valuations of other recently completed public offerings and recent market conditions;

•

our continued progression toward a potential initial public offering, including the occurrence of the public filing of the registration statement of which this prospectus forms a part;

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input received from the underwriters and further feedback from qualified potential investors after “testing-the-waters” meeting from January 2025 through April 2025, which suggested that there was market demand for our securities at a step-up in valuation;

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valuations based on forward-looking valuation methodologies, including a discounted cash flow analysis, as well as factors likely to affect our revenues and profitability, and relevant trading multiples;

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the valuations of comparable companies that recently completed initial public offerings, as well as such companies’ performance in the months following their initial public offerings; and

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changes to the set of comparable companies used to evaluate us as between the January 2024 Valuation and the December 2024 Valuation as a result of our improved business and operating performance that justified the inclusion in our peer group of companies that exhibit generally higher trading multiples than the prior peer group, and the continued trading performance of such peer group companies in the public trading markets following the December 2024 Valuation.

Critical accounting policies and estimates

We believe that the following accounting policies and estimates involve a high degree of judgment and complexity. Accordingly, these are the policies and estimates we believe are the most critical to aid in fully understanding and evaluating our financial condition and results of our operations. We use significant judgment concerning future results and developments in applying these critical accounting policies and estimates and in preparing our consolidated financial statements. These judgments and estimates affect our reported amounts of assets, liabilities, revenues and expenses, and the disclosure of our material contingent assets and liabilities. See Note 2 to our consolidated financial statements appearing elsewhere in this prospectus for a description of our other significant accounting policies. The preparation of our consolidated financial statements in conformity with GAAP requires us to make estimates and judgments that affect the amounts reported in those financial statements and accompanying notes. Although we believe that the estimates we use are reasonable, due to the inherent

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uncertainty involved in making those estimates, actual results reported in future periods could differ from those estimates. We evaluate our estimates regularly using information that we believe to be relevant.

Reserves for unpaid losses and loss adjustment expenses

The reserves for unpaid losses and loss adjustment expenses represent our best estimate of the ultimate cost of settling reported and unreported claims and related expenses. See Note 10 to our consolidated financial statements appearing elsewhere in this prospectus for a discussion of estimates and assumptions related to the reserves for unpaid losses and loss adjustment expenses.

As a relatively new company, our historical loss experience is limited. We estimate the reserves using individual case-basis valuations of reported claims and statistical analyses. Those estimates are based on our historical information, industry information, and our estimates of future trends in variable factors such as loss severity, loss frequency, and other factors such as inflation. We regularly review our estimates and adjust them as necessary as experience develops or as new information becomes known to us. Such adjustments are included in current operations. Additionally, during the loss settlement period, it often becomes necessary to refine and adjust the estimates of liability on a claim either upward or downward. Even after such adjustments, ultimate liability may exceed or be less than the revised estimates. Accordingly, the ultimate settlement of losses and the related loss adjustment expenses may vary significantly from the estimate included in our financial statements.

We categorize our reserves for unpaid losses and loss adjustment expenses into two types: case reserves and reserves for incurred but not yet reported losses (“IBNR”). Our gross reserves for losses and loss adjustment expenses at March 31, 2025 were $421.5 million. Of this amount, 71.3% related to IBNR. Our net reserves for losses and loss adjustment expenses at March 31, 2025 were $298.7 million. Of this amount, 68.6% related to IBNR. A 5% change in net IBNR reserves at March 31, 2025 would equate to a $10.2 million change in the net reserve for losses and loss adjustment expenses at such date, as well as a $8.1 million change in net income, a 1.9% change in members’ equity, at or for the three months ended March 31, 2025. Our gross reserves for losses and loss adjustment expenses at December 31, 2024 were $403.6 million. Of this amount, 70.2% related to IBNR. Our net reserves for losses and loss adjustment expenses at December 31, 2024 were $284.0 million. Of this amount, 68% related to IBNR. A 5% change in net IBNR reserves at December 31, 2024 would equate to a $9.7 million change in the net reserve for losses and loss adjustment expenses at such date, as well as a $7.7 million change in net income, a 1.9% change in members’ equity, at or for the year ended December 31, 2024.

The following table summarizes our gross and net reserves for unpaid losses and loss adjustment expenses at March 31, 2025:

	March 31, 2025
($ in thousands, except percentages)	Gross			% of total		Net			% of total
Case reserves		$	120,848		28.7%		$	93,938		31.4%
IBNR			300,630		71.3%

Ategrity Specialty Holdings LLC S-1/A