UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED ~~JUNE~~SEPTEMBER 30, 2025

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 1-7933

Aon plc

(Exact Name of Registrant as Specified in Its Charter)


IRELAND						98-1539969
(State or other jurisdiction of						(I.R.S. Employer
incorporation or organization)						Identification No.)


15 George's Quay, Dublin 2, Ireland						D02 VR98
(Address of principal executive offices)						(Zip Code)

+353 1 266 6000

(Registrant’s Telephone Number,

including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchangeon which registered

Class A Ordinary Shares $0.01 nominal value

AON

New York Stock Exchange

Guarantees of Aon plc’s 3.875% Senior Notes due 2025

AON25

New York Stock Exchange

Guarantees of Aon plc’s 2.875% Senior Notes due 2026

AON26

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.85% Senior Notes due 2027

AON27

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.850% Senior Notes due 2027

AON27

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.125% Senior Notes due 2027

AON27B

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.150% Senior Notes due 2029

AON29

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.05% Senior Notes due 2031

AON31

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.050% Senior Notes due 2031

AON31

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.60% Senior Notes due 2031

AON31A

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.600% Senior Notes due 2031

AON31A

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.300% Senior Notes due 2031

AON31B

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.00% Senior Notes due 2032

AON32

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.000% Senior Notes due 2032

AON32

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.35% Senior Notes due 2033

AON33

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.350% Senior Notes due 2033

AON33

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.450% Senior Notes due 2034

AON34

New York Stock Exchange

Guarantees of Aon plc’s 4.25% Senior Notes due 2042

AON42

New York Stock Exchange

Guarantees of Aon plc’s 4.250% Senior Notes due 2042

AON42

New York Stock Exchange

Guarantees of Aon plc’s 4.45% Senior Notes due 2043

AON43

New York Stock Exchange

Guarantees of Aon plc’s 4.450% Senior Notes due 2043

AON43

New York Stock Exchange

Guarantees of Aon plc’s 4.60% Senior Notes due 2044

AON44

New York Stock Exchange

Guarantees of Aon plc’s 4.600% Senior Notes due 2044

AON44

New York Stock Exchange

Guarantees of Aon plc’s 4.75% Senior Notes due 2045

AON45

New York Stock Exchange

Guarantees of Aon plc’s 4.750% Senior Notes due 2045

AON45

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.90% Senior Notes due 2051

AON51

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.900% Senior Notes due 2051

AON51

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 3.90% Senior Notes due 2052

AON52

New York Stock Exchange

Guarantees of Aon Corporation and Aon Global Holdings plc’s 3.900% Senior Notes due 2052

AON52

New York Stock Exchange

Guarantees of Aon North America, Inc.’s 5.750% Senior Notes due 2054

AON54

New York Stock Exchange

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

Number of class A ordinary shares of Aon plc, $0.01 nominal value, outstanding as of ~~July~~October 2430, 2025: ~~215~~214,~~626~~935,~~597~~265

INFORMATION CONCERNING FORWARD-LOOKING STATEMENTS

This report contains certain statements related to future results, or states our intentions, beliefs, and expectations or predictions for the future, all of which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements represent management’s expectations or forecasts of future events. These statements include statements about our plans, objectives, strategies, financial performance and outlook, trends, prospects or other future events and involve known and unknown risks that are difficult to predict. Forward-looking statements are typically identified by words such as “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “project,” “positioned,” “intend,” “plan,” “probably,” “potential,” “looking forward,” “continue,” and other similar terms, and future or conditional tense verbs like “could,” “may,” “might,” “should,” “will,” and “would.” You can also identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. For example, we may use forward-looking statements when addressing topics such as: market and industry conditions, including competitive and pricing trends; changes in our business strategies and methods of generating revenue; the development and performance of our services and products; changes in the composition or level of our revenues; our cost structure and the outcome of cost-saving or restructuring initiatives, including the impacts of the Accelerating Aon United Program; the outcome of contingencies; dividend policy; the expected impact of acquisitions, dispositions, and other significant transactions or the termination thereof; litigation and regulatory matters; pension obligations; cash flow and liquidity; expected effective tax rate; expected foreign currency translation impacts; potential changes in laws or future actions by regulators; and the impact of changes in accounting rules. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or anticipated results depending on a variety of factors. Potential factors, which may be revised or supplemented in subsequent reports filed or furnished with the Securities and Exchange Commission, that could impact results include:

•changes in the competitive environment, due to macroeconomic conditions or otherwise, or damage to our reputation;

•fluctuations in currency exchange, interest, or inflation rates that could impact our financial condition or results;

•changes in global equity and fixed income markets that could affect the return on invested assets;

•changes in the funded status of our various defined benefit pension plans and the impact of any increased pension funding resulting from those changes;

•the level of our debt and the terms thereof reducing our flexibility or increasing borrowing costs;

•rating agency actions that could limit our access to capital and our competitive position;

•our global tax rate being subject to a variety of different factors, including the adoption and implementation in the European Union, the United States, the United Kingdom, or other countries of the Organization for Economic Co-operation and Development tax proposals or other pending proposals in those and other countries, which could create volatility in that tax rate;

•changes in our accounting estimates and assumptions on our financial statements;

•limits on our subsidiaries’ ability to pay dividends or otherwise make payments to their respective parent entities;

•the impact of legal proceedings and other contingencies, including those arising from acquisition or disposition transactions, errors and omissions and other claims against us (including proceedings and contingencies relating to transactions for which capital was arranged by Vesttoo Ltd. or related to actions we may take in being responsible for making decisions on behalf of clients in our investment businesses or in other advisory services that we currently provide, or may provide in the future);

•the impact of, and potential challenges in complying with, laws and regulations of the jurisdictions in which we operate, particularly given the global nature of our operations and the possibility of differing or conflicting laws and regulations, or the application or interpretation thereof, across such jurisdictions;

•the impact of any regulatory investigations brought in Ireland, the United Kingdom, the United States, and other countries;

•failure to protect intellectual property rights or allegations that we have infringed on the intellectual property rights of others;

•general economic and political conditions in the countries in which we do business around the world;

•the failure to retain, attract and develop experienced and qualified personnel;

•international risks associated with our global operations, including geopolitical conflicts, tariffs, or changes in trade policies;

•the effects of natural or human-caused disasters, including the effects of health pandemics and the impacts of climate-related events;

•any system or network disruption or breach resulting in operational interruption or improper disclosure of confidential, personal, or proprietary data, and resulting liabilities or damage to our reputation;

•our ability to develop, implement, update, and enhance new technology;

•the actions taken by third parties that perform aspects of our business operations and client services;

•our ability to continue, and the costs and risks associated with growing, developing and integrating acquired business, and entering into new lines of business or products;

•our ability to secure regulatory approval and complete transactions, and the costs and risks associated with the failure to consummate proposed transactions;

•changes in commercial property and casualty markets, commercial premium rates or methods of compensation;

•our ability to develop and implement innovative growth strategies and initiatives intended to yield cost savings (including the Accelerating Aon United Program) and the ability to achieve such growth or cost savings;

•the effects of Irish law on our operating flexibility and the enforcement of judgments against us;

•adverse effects on the market price of Aon’s securities and/or operating results for any reason, including, without limitation, because of a failure to realize the expected benefits of the acquisition of NFP (including anticipated revenue and growth synergies) in the expected timeframe, or at all; and

•significant integration costs in connection with the acquisition of NFP or unknown or inestimable liabilities.

Any or all of our forward-looking statements may turn out to be inaccurate, and there are no guarantees about our performance. The factors identified above are not exhaustive. Aon and its subsidiaries operate in a dynamic business environment in which new risks may emerge frequently. Accordingly, readers should not place undue reliance on forward-looking statements, which speak only as of the dates on which they are made. We are under no (and expressly disclaim any) obligation to update or alter any forward-looking statement that we may make from time to time, whether as a result of new information, future events, or otherwise.

Further information about factors that could materially affect Aon, including our results of operations and financial condition, is contained in our filings with the SEC, including the “Risk Factors” section in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024. These factors may be revised or supplemented in our subsequent periodic filings with the SEC.

Table of Contents


PART I - FINANCIAL INFORMATION

			Item 1. Financial Statements
			Aon plc Condensed Consolidated Statements of Income
			Aon plc Condensed Consolidated Statements of Comprehensive Income
			Aon plc Condensed Consolidated Statements of Financial Position
			Aon plc Condensed Consolidated Statements of Shareholders’ Equity
			Aon plc Condensed Consolidated Statements of Cash Flows
			Notes to Condensed Consolidated Financial Statements

			Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations
			Item 3. Quantitative and Qualitative Disclosures about Market Risk
			Item 4. Controls and Procedures

PART II - OTHER INFORMATION

			Item 1. Legal Proceedings
			Item 1A. Risk Factors
			Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
			Item 3. Defaults Upon Senior Securities
			Item 4. Mine Safety Disclosures
			Item 5. Other Information
			Item 6. Exhibits
			Signature
			Exhibit Index

The below definitions apply throughout this report unless the context requires otherwise:


Term			Definition






AAU			Accelerating Aon United Program
ASC			Accounting Standards Codification
CODM			Chief Operating Decision Maker

DCF			Discounted Cash Flow

E&O			Errors and Omissions
EBITDA			Earnings before Interest, Taxes, Depreciation, and Amortization
EMEA			Europe, the Middle East, and Africa

ESG			Environmental, Social, and Governance

E.U.			European Union
FASB			Financial Accounting Standards Board
FCA			Financial Conduct Authority

GAAP			U.S. Generally Accepted Accounting Principles
GHG			Greenhouse Gas




LOC			Letter of Credit








OECD			Organization for Economic Co-operation and Development




P&C			Property and Casualty
ROU			Right-of-Use



SEC			Securities and Exchange Commission
U.K.			United Kingdom
U.S.			United States
VIE			Variable Interest Entity

Part I Financial Information

Item 1. Financial Statements

Aon plc

Condensed Consolidated Statements of Income

(Unaudited)

Three Months Ended June 30,

Six Months Ended June 30,

Three Months Ended September 30,

Nine Months Ended September 30,

(millions, except per share data)

2025

2024

2025

2024

Revenue

Total revenue

43,~~155~~997

3,~~760~~721

812,~~884~~881

711,~~830~~551

Expenses

Compensation and benefits

2,~~360~~259

2,~~130~~150

46,~~609~~868

46,~~013~~163

Information technology

~~136~~140

~~132~~141

~~272~~412

~~256~~397

Premises

8288

~~167~~252

~~153~~241

Depreciation of fixed assets

4547

93140

89136

Amortization and impairment of intangible assets

~~201~~193

~~128~~174

~~400~~593

~~144~~318

Other general expense

~~373~~425

~~455~~429

~~819~~1,244

~~803~~1,232

Accelerating Aon United Program expenses

9432

~~132~~69

~~204~~236

~~251~~320

Total operating expenses

3,~~296~~181

3,~~104~~098

69,~~564~~745

58,~~709~~807

Operating income

~~859~~816

~~656~~623

23,~~320~~136

2,~~121~~744

Interest income

—

314

5963

Interest expense

(~~212~~206)

(~~225~~213)

(~~418~~624)

(~~369~~582)

Other income (expense)

56(13)

~~236~~35

4633

~~311~~346

Income before income taxes

~~703~~597

~~698~~449

12,~~953~~550

2,~~122~~571

Income tax expense

~~109~~127

~~160~~94

~~377~~504

~~491~~585

Net income

~~594~~470

~~538~~355

12,~~576~~046

1,~~631~~986

Less: Net income attributable to redeemable and nonredeemable noncontrolling interests

1512

1412

3244

3648

Net income attributable to Aon shareholders

~~579~~458

~~524~~343

12,~~544~~002

1,~~595~~938

Basic net income per share attributable to Aon shareholders

2.6812

21.4758

79.1426

79.7524

Diluted net income per share attributable to Aon shareholders

2.6611

21.4657

79.1021

79.7220

Weighted average ordinary shares outstanding - basic

~~216~~215.27

~~212~~217.54

216.31

~~205~~209.87

Weighted average ordinary shares outstanding - diluted

~~217~~216.37

~~213~~218.34

217.63

~~206~~210.76

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
(millions)	2025		2024		2025		2024
Net income	$	~~594~~470	$	~~538~~355	$	12,~~576~~046	$	1,~~631~~986
Less: Net income attributable to redeemable and nonredeemable noncontrolling interests	1512		1412		3244		3648
Net income attributable to Aon shareholders	~~579~~458		~~524~~343		12,~~544~~002		1,~~595~~938
Other comprehensive income (loss), net of tax:
Change in fair value of financial instruments	10(9)		18		134		7684
Foreign currency translation adjustments	~~604~~(91)		~~(88)~~349		~~843~~752		~~(220)~~129
Postretirement benefit obligation	~~(1)~~28		13—		4674		39
Total other comprehensive income (loss)	613		(74)		902		(105)
Total other comprehensive income (expense)	(72)		357		830		252
Less: Other comprehensive income attributable to noncontrolling interests	—		—		—		—
Total other comprehensive income (loss) attributable to Aon shareholders	613		(74)		902		(105)
Total other comprehensive income (expense) attributable to Aon shareholders	(72)		357		830		252
Comprehensive income attributable to Aon shareholders	$	~~1,192~~386	$	~~450~~700	$	2,~~446~~832	$	12,~~490~~190

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Financial Position

(Unaudited)

(millions, except nominal value)

~~June~~September 30,2025

December 31,2024

Assets

Current assets

Cash and cash equivalents

1,~~008~~095

1,085

Short-term investments

~~379~~207

219

Receivables, net

4,~~905~~276

3,803

Fiduciary assets

2018,~~677~~781

17,566

Other current assets

~~854~~2,210

759

Total current assets

2726,~~823~~569

23,432

Goodwill

1615,~~024~~704

15,234

Intangible assets, net

65,~~733~~827

6,743

Fixed assets, net

~~664~~684

637

Operating lease right-of-use assets

~~735~~681

711

Deferred tax assets

~~861~~855

654

Prepaid pension

~~598~~588

556

Other non-current assets

~~572~~729

998

Total assets

5451,~~010~~637

48,965

Liabilities, redeemable noncontrolling interests, and equity

Liabilities

Current liabilities

Accounts payable and accrued liabilities

2,~~294~~398

2,905

Short-term debt and current portion of long-term debt

1,~~837~~735

751

Fiduciary liabilities

2018,~~677~~781

17,566

Other current liabilities

2,~~267~~189

1,773

Total current liabilities

2725,~~075~~103

22,995

Long-term debt

15,~~451~~055

16,265

Non-current operating lease liabilities

~~705~~651

685

Deferred tax liabilities

~~363~~361

319

Pension, other postretirement, and postemployment liabilities

1,~~078~~052

1,127

Other non-current liabilities

1,~~249~~216

1,144

Total liabilities

4543,~~921~~438

42,535

Redeemable noncontrolling interests

8185

125

Equity

Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2025 - 215.7; 2024 - 216.0)

Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2025 - 215.2; 2024 - 216.0)

Additional paid-in capital

13,~~258~~379

13,173

Accumulated deficit

(1,~~574~~527)

(2,309)

Accumulated other comprehensive loss

(3,~~843~~915)

(4,745)

Total Aon shareholders' equity

7,~~843~~939

6,121

Nonredeemable noncontrolling interests

~~165~~175

184

Total equity

8,~~008~~114

6,305

Total liabilities, redeemable noncontrolling interests and equity

5451,~~010~~637

48,965

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Shareholders’ Equity

(Unaudited)

(millions)	Shares	OrdinaryShares andAdditionalPaid-in Capital		Accumulated Deficit		Accumulated OtherComprehensiveLoss, Net of Tax		Non-redeemableNon-controllingInterests		Total
Balance at January 1, 2025	216.0	$	13,175	$	(2,309)	$	(4,745)	$	184	$	6,305
Net income (1)	—	—		965		—		21		986
Shares issued - employee stock compensation plans	0.7	(111)		—		—		—		(111)
Shares repurchased	(0.6)	—		(250)		—		—		(250)
Share-based compensation expense	—	147		—		—		—		147
Dividends to shareholders ($0.675 per share)	—	—		(146)		—		—		(146)
Net change in fair value of financial instruments	—	—		—		3		—		3
Net foreign currency translation adjustments	—	—		—		239		—		239
Net postretirement benefit obligation	—	—		—		47		—		47
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(14)		(14)
Remeasurement of redemption value of redeemable noncontrolling interest	—	(11)		—		—		—		(11)
Balance at March 31, 2025	216.1	$	13,200	$	(1,740)	$	(4,456)	$	191	$	7,195
Net income (2)	—	—		579		—		14		593
Shares issued - employee stock compensation plans	0.3	(49)		(1)		—		—		(50)
Shares repurchased	(0.7)	—		(250)		—		—		(250)
Share-based compensation expense	—	119		—		—		—		119
Dividends to shareholders ($0.745 per share)	—	—		(162)		—		—		(162)
Net change in fair value of financial instruments	—	—		—		10		—		10
Net foreign currency translation adjustments	—	—		—		604		—		604
Net postretirement benefit obligation	—	—		—		(1)		—		(1)
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—	(9)		—		—		—		(9)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(40)		(40)
Remeasurement of redemption value of redeemable noncontrolling interest	—	(1)		—		—		—		(1)
Balance at June 30, 2025	215.7	$	13,260	$	(1,574)	$	(3,843)	$	165	$	8,008
Net income (3)	—	—		458		—		12		470
Shares issued - employee stock compensation plans	0.2	20		—		—		—		20
Shares repurchased	(0.7)	—		(250)		—		—		(250)
Share-based compensation expense	—	106		—		—		—		106
Dividends to shareholders ($0.745 per share)	—	—		(161)		—		—		(161)
Net change in fair value of financial instruments	—	—		—		(9)		—		(9)
Net foreign currency translation adjustments	—	—		—		(91)		—		(91)
Net postretirement benefit obligation	—	—		—		28		—		28
Purchases of subsidiary shares from noncontrolling interests	—	(1)		—		—		—		(1)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(2)		(2)
Remeasurement of redemption value of redeemable noncontrolling interest	—	(4)		—		—		—		(4)
Balance at September 30, 2025	215.2	$	13,381	$	(1,527)	$	(3,915)	$	175	$	8,114

(1)The Company’s Net income totaled $982 million for the quarter ended March 31, 2025, which included $4 million of Net loss related to redeemable noncontrolling interests.

(2)The Company’s Net income totaled $594 million for the quarter ended June 30, 2025, which included $1 million of Net ~~gain~~income related to redeemable noncontrolling interests.

(3)The Company’s Net income totaled $470 million for the quarter ended September 30, 2025, which included an insignificant amount of Net income related to redeemable noncontrolling interests.

(millions)	Shares	OrdinaryShares andAdditionalPaid-in Capital		Accumulated Deficit		Accumulated OtherComprehensiveLoss, Net of Tax		Non-redeemable Non-controllingInterests		Total
Balance at January 1, 2024	198.6	$	6,946	$	(3,399)	$	(4,373)	$	84	$	(742)
Net income	—	—		1,071		—		22		1,093
Shares issued - employee stock compensation plans	0.8	(104)		—		—		—		(104)
Shares repurchased	(0.8)	—		(250)		—		—		(250)
Share-based compensation expense	—	130		—		—		—		130
Dividends to shareholders ($0.615 per share)	—	—		(122)		—		—		(122)
Net change in fair value of financial instruments	—	—		—		75		—		75
Net foreign currency translation adjustments	—	—		—		(132)		—		(132)
Net postretirement benefit obligation	—	—		—		26		—		26
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—	(1)		—		—		—		(1)
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(1)		(1)
Balance at March 31, 2024	198.6	$	6,971	$	(2,700)	$	(4,404)	$	105	$	(28)
Net income (1)	—	—		524		—		12		536
Shares issued - NFP Transaction	19.0	5,882		—		—		—		5,882
Shares issued - employee stock compensation plans	0.4	(45)		—		—		—		(45)
Shares repurchased	(0.8)	—		(250)		—		—		(250)
Share-based compensation expense	—	117		—		—		—		117
Dividends to shareholders ($0.675 per share)	—	—		(148)		—		—		(148)
Net change in fair value of financial instruments	—	—		—		1		—		1
Net foreign currency translation adjustments	—	—		—		(88)		—		(88)
Net postretirement benefit obligation	—	—		—		13		—		13
Purchases of subsidiary shares from nonredeemable noncontrolling interests	—	—		—		—		86		86
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	—	—		—		—		(35)		(35)
Adjustments to redeemable noncontrolling interests	—	(13)		—		—		—		(13)
Balance at June 30, 2024	217.2	$	12,912	$	(2,574)	$	(4,478)	$	168	$	6,028
Net income (2)	—	—		343		—		11		354
Shares issued - employee stock compensation plans	0.2	20		—		—		—		20
Shares repurchased	(0.9)	—		(304)		—		—		(304)
Share-based compensation expense	—	114		—		—		—		114
Dividends to shareholders ($0.675 per share)	—	—		(147)		—		—		(147)
Net change in fair value of financial instruments	—	—		—		8		—		8
Net foreign currency translation adjustments	—	—		—		349		—		349
Net postretirement benefit obligation	—	—		—		—		—		—
Purchases of subsidiary shares from noncontrolling interests	—	1		—		—		—		1
Dividends paid to noncontrolling interests on subsidiary common stock	—	—		—		—		(5)		(5)
Balance at September 30, 2024	216.5	$	13,047	$	(2,682)	$	(4,121)	$	174	$	6,418

(1)The Company’s Net income totaled $538 million for the quarter ended June 30, 2024, which included $2 million of Net income related to redeemable noncontrolling interests.

(2)The Company’s Net income totaled $355 million for the quarter ended September 30, 2024, which included $1 million of Net income related to redeemable noncontrolling interests.

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Aon plc

Condensed Consolidated Statements of Cash Flows

(Unaudited)

Six Months Ended June 30,

Nine Months Ended September 30,

(millions)

2025

2024

Cash flows from operating activities

Net income

12,~~576~~046

1,~~631~~986

Adjustments to reconcile net income to cash provided by operating activities:

Gain from sales of businesses

—(1)

(~~257~~333)

Depreciation of fixed assets

93140

89136

Amortization and impairment of intangible assets

~~400~~593

~~144~~318

Share-based compensation expense

~~266~~372

~~247~~361

Deferred income taxes

(~~242~~236)

(~~122~~146)

Other, net

(~~111~~116)

(~~112~~126)

Change in assets and liabilities:

Receivables, net

(~~902~~342)

(~~959~~384)

Accounts payable and accrued liabilities

(~~738~~543)

(~~251~~36)

Accelerating Aon United Program liabilities

15(29)

6143

Current income taxes

(73141)

60(119)

Pension, other postretirement and postemployment liabilities

(1217)

(1725)

Other assets and liabilities

~~664~~358

~~308~~160

Cash provided by operating activities

~~936~~2,084

~~822~~1,835

Cash flows from investing activities

Proceeds from investments

71114

~~146~~186

Purchases of investments

(42139)

(91136)

Net purchases (sales) of short-term investments - non fiduciary

(153)

189

Net purchases of short-term investments - non fiduciary

182

Acquisition of businesses, net of cash and funds held on behalf of clients

(~~143~~276)

(23,~~780~~011)

Sale of businesses, net of cash and funds held on behalf of clients

~~119~~112

~~352~~686

Capital expenditures

(~~120~~189)

(~~101~~163)

Cash used for investing activities

(~~268~~362)

(2,~~285~~256)

Cash flows from financing activities

Share repurchase

(~~500~~750)

(~~500~~800)

Proceeds from issuance of shares

3360

2761

Cash paid for employee taxes on withholding shares

(~~194~~201)

(~~176~~190)

Commercial paper issuances, net of repayments

~~480~~376

(591)

Issuance of debt

—

7,926

Repayment of debt

(~~300~~700)

(4,~~328~~878)

Increase in fiduciary liabilities, net of fiduciary receivables

~~569~~706

~~283~~609

Cash dividends to shareholders

(~~308~~468)

(~~269~~416)

Redeemable and nonredeemable noncontrolling interests, and other financing activities

(~~153~~164)

(~~108~~156)

Cash provided by (used for) financing activities

(~~373~~1,141)

21,~~264~~565

Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients

~~696~~606

~~(202)~~177

Net increase in cash and cash equivalents and funds held on behalf of clients

~~991~~1,187

~~599~~1,321

Cash, cash equivalents and funds held on behalf of clients at beginning of period

8,333

7,722

Cash, cash equivalents and funds held on behalf of clients at end of period

9,~~324~~520

89,~~321~~043

Reconciliation of cash and cash equivalents and funds held on behalf of clients:

Cash and cash equivalents

1,~~008~~095

~~974~~1,103

Cash and cash equivalents and funds held on behalf of clients classified as held for sale

134

38—

Funds held on behalf of clients

8,~~315~~391

7,~~309~~940

Total cash and cash equivalents and funds held on behalf of clients

9,~~324~~520

89,~~321~~043

Supplemental disclosures:

Interest paid

~~416~~689

~~256~~538

Income taxes paid, net of refunds

~~692~~881

~~553~~850

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

Notes to Condensed Consolidated Financial Statements (Unaudited)

1. Basis of Presentation

The accompanying Condensed Consolidated Financial Statements and Notes thereto have been prepared in accordance with U.S. GAAP. The Condensed Consolidated Financial Statements include the accounts of Aon plc and all of its controlled subsidiaries (“Aon” or the “Company”). Intercompany accounts and transactions have been eliminated. The Condensed Consolidated Financial Statements include, in the opinion of management, all adjustments (consisting of normal recurring adjustments and reclassifications) necessary to present fairly the Company’s consolidated financial position, results of operations, and cash flows for all periods presented.

Certain information and disclosures normally included in the Consolidated Financial Statements prepared in accordance with U.S. GAAP have been condensed or omitted. The Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024. The results for the three and ~~six~~nine months ended ~~June~~September 30, 2025 are not necessarily indicative of operating results that may be expected for the full year ending December 31, 2025.

Use of Estimates

The preparation of the accompanying Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of reserves and expenses. These estimates and assumptions are based on management’s best estimates and judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management believes its estimates to be reasonable given the current facts available. Aon adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets, and foreign currency exchange rate movements increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment would, if applicable, be reflected in the Condensed Consolidated Financial Statements in future periods.

2. Accounting Principles and Practices

New Accounting Pronouncements

Accounting Standards Issued But Not Yet Adopted

Accounting for and Disclosure of Software Costs

In September 2025, the FASB issued new accounting guidance under ASC 350-40, Intangibles — Goodwill and Other Internal-Use Software to modernize the criteria for capitalizing software development costs by removing references to development stages and framework updates to better reflect current software development practices. The new guidance is effective for annual periods beginning after December 15, 2027, with early adoption permitted. The Company is evaluating the impact the new guidance will have on the Consolidated Financial Statements and Notes.

Improvements to Income Tax Disclosures

In December 2023, the FASB issued new accounting guidance under ASC 740, Income Taxes, which requires additional income tax disclosures on an annual basis, including disaggregation of information presented within the reconciliation of the expected tax to the reported tax by specific categories, with certain reconciling items 5% or greater broken out by nature and/or jurisdiction. The new guidance also requires disclosure of income taxes paid, net of refunds, broken out by federal, state/local and foreign, including disclosure of individual jurisdictions when greater than 5% of total net income taxes paid. The new guidance is effective for annual periods beginning the year ended December 31, 2025. The Company is evaluating the transition approach as well as the impact the disclosures will have on the Notes to Consolidated Financial Statements.

Disaggregation of Income Statement Expenses

In November 2024, the FASB issued new accounting guidance under ASC 220, Income Statement — Reporting Comprehensive Income, which requires more detailed information about certain expenses in commonly presented expense captions including inventory, employee compensation, depreciation, and amortization. The new guidance also requires disclosure of total selling expenses and, on an annual basis, an entity’s definition of selling expenses. The new guidance is effective for ~~Aon for~~ the year ended December 31, 2027, with early adoption permitted. Entities may apply the new guidance on a prospective basis, with the option for retrospective application. ~~Aon~~The Company is currently evaluating the transition approach and the impact the guidance will have on the Notes to Consolidated Financial Statements.

Securities and Exchange Commission Final Rules

The Enhancement and Standardization of Climate-Related Disclosures for Investors

In March 2024, the SEC adopted final rules to enhance and standardize climate-related disclosures. The final rules would require the Company to provide certain climate-related information in Item 7, Management’s Discussion and Analysis regarding material climate-related risks, activities to mitigate or adapt to such risks, information regarding oversight and management of climate-related risks, information on climate-related targets or goals, and disclosure of Scope 1 and 2 GHG emissions. Additionally, within the Notes to Consolidated Financial Statements, the Company would be required to disclose the financial statement effects of severe weather events and other natural conditions. The final rules were to be effective for the year ended December 31, 2025, with the exception of GHG emissions disclosures which were to be effective for the year ended December 31, 2026. The final rules have been subject to several legal challenges and on April 4, 2024, the SEC voluntarily stayed the final rules, which remains in effect. On March 27, 2025, the SEC voted to end its legal defense of the final rules in Court of Appeals for the Eighth Circuit. The Eighth Circuit has suspended the litigation until the SEC informs the court whether it intends to reconsider the rules under administrative procedures or whether the SEC will renew its defense of the rules. The Company is monitoring the judicial process for resolution of the legal challenges and impacts on the disclosure requirements.

regarding material climate-related risks, activities to mitigate or adapt to such risks, information regarding oversight and management of climate-related risks, information on climate-related targets or goals, and disclosure of Scope 1 and 2 GHG emissions. Additionally, within the Notes to Consolidated Financial Statements, the Company would be required to disclose the financial statement effects of severe weather events and other natural conditions. The final rules were to be effective for Aon for the year ended December 31, 2025, with the exception of GHG emissions disclosures which were to be effective for Aon for the year ended December 31, 2026. The final rules have been subject to several legal challenges. On April 4, 2024, the SEC voluntarily stayed the final rules pending judicial review, and on March 27, 2025, the SEC voted to end its legal defense of the final rules in Court of Appeals for the Eighth Circuit. The Eighth Circuit subsequently suspended the litigation until the SEC informed the court about whether it intends to review or reconsider the rules under administrative procedures and whether the SEC would enforce the rules if ultimately upheld. On July 23, 2025, the SEC filed a status report in response, stating that it does not intend to review or reconsider the rules under administrative procedures, and declined to say whether or not it would enforce the rules if ultimately upheld. The Company is monitoring the judicial process for resolution of the legal challenges and impacts on the disclosure requirements.

3. Revenue from Contracts with Customers

Disaggregation of Revenue

The following table summarizes revenue from contracts with customers by principal service line (in millions):

Three Months Ended June 30,

Six Months Ended June 30,

Three Months Ended September 30,

Nine Months Ended September 30,

2025

2024

2025

2024

Commercial Risk Solutions

21,~~178~~988

21,~~015~~852

46,~~180~~168

35,~~823~~675

Reinsurance Solutions

~~688~~537

~~635~~503

12,~~877~~414

12,~~802~~305

Total Risk Capital (1)

2,~~866~~525

2,~~650~~355

68,~~057~~582

57,~~625~~980

Health Solutions

~~772~~935

~~662~~870

12,~~798~~733

12,~~395~~265

Wealth Solutions

~~519~~540

~~463~~499

1,~~038~~578

~~833~~1,332

Total Human Capital (1)

1,~~291~~475

1,~~125~~369

24,~~836~~311

23,~~228~~597

Eliminations

(23)

(153)

(912)

(2326)

Total revenue

43,~~155~~997

3,~~760~~721

812,~~884~~881

711,~~830~~551

(1)Includes inter-segment revenue. Refer to Note 16 “Segment Information” for further information.

Consolidated revenue from contracts with customers by geographic area, which is attributed on the basis of where the services are performed, is as follows (in millions):

	Three Months Ended June 30, 2025
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	1,324	$	718	$	(2)	$	2,040
Americas other than U.S.	285		110		—		395
U.K.	411		199		—		610
Ireland	24		22		—		46
Europe, Middle East, & Africa other than U.K. and Ireland	469		165		—		634
Asia Pacific	353		77		—		430
Total revenue	$	2,866	$	1,291	$	(2)	$	4,155

	Three Months Ended June 30, 2024
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	1,217	$	635	$	(15)	$	1,837
Americas other than U.S.	260		102		—		362
U.K.	379		169		—		548
Ireland	20		15		—		35
Europe, Middle East, & Africa other than U.K. and Ireland	428		138		—		566
Asia Pacific	346		66		—		412
Total revenue	$	2,650	$	1,125	$	(15)	$	3,760

Consolidated revenue from contracts with customers by geographic area, which is attributed on the basis of where the services are performed, is as follows (in millions):

Six Months Ended June 30, 2025

Three Months Ended September 30, 2025

Risk Capital

Human Capital

Corporate/Eliminations

Total

U.S.

21,~~545~~229

~~1,506~~858

(93)

42,~~042~~084

Americas other than U.S.

~~539~~260

~~230~~121

—

~~769~~381

U.K.

~~841~~303

~~390~~222

—

~~1,231~~525

Ireland

4621

4521

—

9142

Europe, Middle East, & Africa other than U.K. and Ireland

~~1,415~~400

~~481~~155

—

~~1,896~~555

Asia Pacific

~~671~~312

~~184~~98

—

~~855~~410

Total revenue

62,~~057~~525

21,~~836~~475

(93)

83,~~884~~997

Six Months Ended June 30, 2024

Three Months Ended September 30, 2024

Risk Capital

Human Capital

Corporate/Eliminations

Total

U.S.

21,~~295~~206

~~1,077~~880

(233)

32,~~349~~083

Americas other than U.S.

~~487~~195

~~198~~68

—

~~685~~263

U.K.

~~790~~255

~~341~~182

—

~~1,131~~437

Ireland

3620

3218

—

6838

Europe, Middle East, & Africa other than U.K. and Ireland

~~1,356~~361

~~419~~131

—

~~1,775~~492

Asia Pacific

~~661~~318

~~161~~90

—

~~822~~408

Total revenue

52,~~625~~355

21,~~228~~369

(233)

73,~~830~~721


	Nine Months Ended September 30, 2025
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	3,774	$	2,364	$	(12)	$	6,126
Americas other than U.S.	799		351		—		1,150
U.K.	1,144		612		—		1,756
Ireland	67		66		—		133
Europe, Middle East, & Africa other than U.K. and Ireland	1,815		636		—		2,451
Asia Pacific	983		282		—		1,265
Total revenue	$	8,582	$	4,311	$	(12)	$	12,881


	Nine Months Ended September 30, 2024
	Risk Capital		Human Capital		Corporate/Eliminations		Total
U.S.	$	3,501	$	1,957	$	(26)	$	5,432
Americas other than U.S.	682		266		—		948
U.K.	1,045		523		—		1,568
Ireland	56		50		—		106
Europe, Middle East, & Africa other than U.K. and Ireland	1,717		550		—		2,267
Asia Pacific	979		251		—		1,230
Total revenue	$	7,980	$	3,597	$	(26)	$	11,551

Contract Costs

An analysis of the changes in the net carrying amount of costs to fulfill contracts with customers are as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Balance at beginning of period	$	~~302~~273	$	~~269~~264	$	424	$	370
Additions	~~409~~440		~~386~~400		~~827~~1,267		~~766~~1,166
Amortization	(~~448~~392)		(~~390~~367)		(~~992~~1,384)		(~~868~~1,235)
Impairment	—		—		—		—
Foreign currency translation and other	10(1)		~~(1)~~5		1413		~~(4)~~1
Balance at end of period	$	~~273~~320	$	~~264~~302	$	~~273~~320	$	~~264~~302

An analysis of the changes in the net carrying amount of costs to obtain contracts with customers are as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Balance at beginning of period	$	~~208~~187	$	~~194~~196	$	207	$	195
Additions	144		1819		2731		3251
Amortization	(401)		(1413)		(5354)		(2740)
Impairment	—		—		—		—
Foreign currency translation and other	5—		~~(2)~~—		6		(4)
Balance at end of period	$	~~187~~190	$	~~196~~202	$	~~187~~190	$	~~196~~202

4. Accelerating Aon United Program

In the third quarter of 2023, Aon initiated a three-year restructuring program called the Accelerating Aon United Program (the “Program” or the “AAU Program”) with the purpose of streamlining the Company’s technology infrastructure, optimizing its leadership structure and resource alignment, and reducing its real estate footprint to align to its hybrid working strategy. The Program includes technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation and technology costs. The Program is an investment in the Company’s 3x3 Plan that brings together the best of the firm through its Aon United strategy, delivered as Risk Capital and Human Capital, and Aon’s Client Leadership model, powered by Aon Business Services.

Program charges are recognized within Accelerating Aon United Program expenses on the accompanying Condensed Consolidated Statements of Income and consist of the following cost activities:

•Technology and other – includes costs associated with actions taken to rationalize applications and to optimize technology across the Company. These costs may include termination fees and other non-capitalizable costs associated with Program initiatives, which include professional service fees.

•Workforce optimization – includes costs associated with headcount reduction and other separation-related costs.

•Asset impairments – includes non-cash costs associated with impairment of assets, as they are identified, including ROU lease assets, leasehold improvements, and other capitalized assets no longer providing economic benefit.

The Program is currently expected to result in cumulative costs of $1.0 billion, consisting of approximately $0.9 billion of cash charges and approximately $0.1 billion of non-cash charges. For the three and ~~six~~nine months ended ~~June~~September 30, 2025, total Program costs incurred were $9432 million and $~~204~~236 million, respectively. Over the life of the Program, the Risk Capital segment is expected to incur approximately $~~220~~230 million of charges, while the Human Capital segment is expected to incur approximately $60 million of charges, with the remaining charges relating to corporate expenses.

Total Program costs incurred for the three and six months ended June 30, 2025 and 2024 are as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Risk Capital	$	32	$	49	$	51	$	92
Human Capital	6		12		10		23
Corporate	56		71		143		136
Total	$	94	$	132	$	204	$	251

The Company’s unpaid liabilities for charges under the Program are primarily included in Accounts payable and accrued liabilities and Other non-current liabilities in the Condensed Consolidated Statements of Financial Position.

~~The~~Total ~~changes~~Program incosts ~~the~~incurred ~~Company’s liabilities~~ for the ~~Program~~three asand ofnine ~~June~~months ended September 30, 2025 and 2024 are as follows (in millions):

	Technology and other				Workforce optimization				Asset impairments				Total
			Three Months Ended September 30,								Nine Months Ended September 30,
Liability balance as of December 31, 2024	$	17			$	97			$	—			$	114
			2025				2024				2025				2024
Charges	100				100				4				204
Risk Capital (1)			$	(3)			$	11			$	48			$	103
Cash payments	(84)				(82)				—				(166)
Human Capital (1)			(1)				4				9				27
Foreign currency translation and other	—				5				—				5
Corporate			36				54				179				190
Non-cash charges	(2)				(17)				(4)				(23)
Total			$	32			$	69			$	236			$	320
Liability balance as of June 30, 2025	$	31			$	103			$	—			$	134
Total costs incurred from inception to date	$	240			$	400			$	88			$	728

(1)Risk Capital and Human Capital Program costs reflect changes in accruals made in the current period related to Workforce optimization.

The changes in the Company’s liabilities for the Program as of September 30, 2025 are as follows (in millions):


	Technology and other		Workforce optimization		Asset impairments		Total
Liability balance as of December 31, 2024	$	17	$	97	$	—	$	114
Charges	138		91		7		236
Cash payments	(124)		(110)		—		(234)
Foreign currency translation and other	—		5		—		5
Non-cash charges	(7)		(17)		(7)		(31)
Liability balance as of September 30, 2025	$	24	$	66	$	—	$	90
Total costs incurred from inception to date	$	278	$	391	$	91	$	760

5. Cash and Cash Equivalents and Short-Term Investments

Cash and cash equivalents include cash balances and all highly liquid instruments with initial maturities of three months or less. Short-term investments consist of money market funds. The estimated fair value of Cash and cash equivalents and Short-term investments approximates their carrying values.

At ~~June~~September 30, 2025 and December 31, 2024, Cash and cash equivalents and Short-term investments were $1.~~4 billion compared to $1.~~3 billion ~~at December 31, 2024~~. Of the total balances, $~~158~~136 million and $123 million were restricted as to their use at ~~June~~September 30, 2025 and December 31, 2024, respectively. Included within Short-term investments as of ~~June~~September 30, 2025 and December 31, 2024, were £6671 million ($9096 million at ~~June~~September 30, 2025 exchange rates) and £63 million ($79 million at December 31, 2024 exchange rates), respectively, of operating funds required to be held by the Company in the U.K. by the FCA, a U.K.-based regulator.

6. Other Financial Data

Condensed Consolidated Statements of Income Information

Other Income (Expense)

Other income (expense) consists of the following (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Extinguishment of debt	$	—	$	(6)	$	—	$	(6)
Pension and other postretirement	$	(21)	$	(14)	$	(65)	$	(35)
Gain from sales of businesses	—		257		—		257
Extinguishment of debt	—		(1)		—		(7)
Equity earnings	3		1		1		3
Gain from sales of businesses	1		76		1		333
Pension and other postretirement	(21)		(11)		(44)		(21)
Equity earnings	4		2		5		5
Foreign currency remeasurement	~~(38)~~11		5(30)		(5443)		9(21)
Financial instruments and other (1)	~~112~~(8)		~~(10)~~2		~~143~~135		6971
Total	$	56(13)	$	~~236~~35	$	4633	$	~~311~~346

(1)During the ~~three~~nine ~~and six~~ months ended ~~June~~September 30, 2025, ana ~~$88 million~~gain ~~and~~of $108 million ~~gain~~ was recognized, ~~respectively,~~which ~~compared~~was toall ~~$82 million~~ recognized ~~for~~in the first six months of 2025. During the three and nine months ended ~~June~~September 30, 2024, ~~which~~a ~~was~~$2 million ~~all~~and ~~recognized~~$84 million ingain ~~the~~was ~~first~~recognized, ~~quarter of 2024~~respectively. These gains are related to deferred consideration from the affiliates of The Blackstone Group L.P. and the other designated purchasers related to a divestiture completed in a prior year period. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for additional information.

Condensed Consolidated Statements of Financial Position Information

Allowance for Doubtful Accounts

Changes in the net carrying amount of allowance for doubtful accounts are as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Balance at beginning of period	$	7479	$	8187	$	75	$	79
Provision	34		62		610		1113
Accounts written off, net of recoveries	(19)		—(6)		(615)		(28)
Foreign currency translation and other	3—		—2		4		(1)
Balance at end of period	$	7974	$	8785	$	7974	$	8785

Other Current Assets

The components of Other current assets are as follows (in millions):

As of	~~June~~September 30,2025		December 31,2024
Costs to fulfill contracts with customers (1)	$	273	$	424
Assets held for sale (1)	$	1,274	$	1
Prepaid expenses	170		135
Costs to fulfill contracts with customers (2)	320		424
Taxes receivable	89		43
Prepaid expenses	175		135
Other (2)	322		157
Taxes receivable	121		43
Total	$	854	$	759
Other	320		156
Total	$	2,210	$	759

(1)Refer to Note 37 “~~Revenue~~Acquisitions ~~from~~and ~~Contracts~~Dispositions ~~with~~of ~~Customers~~Businesses” for further information.

(2)~~Includes~~Refer ~~$1 million~~to asNote of3 ~~December~~“Revenue ~~31,~~from ~~2024~~Contracts ~~that~~with ~~was~~Customers” ~~previously classified as “Assets held~~ for ~~sale”~~further ~~within Aon’s Annual Report on Form 10-K filed February 18, 2025~~information. ~~The prior year balance has been reclassified to conform to current year presentation.~~

Other Non-Current Assets

The components of Other non-current assets are as follows (in millions):

As of	~~June~~September 30,2025		December 31,2024
Costs to obtain contracts with customers (1)	$	~~187~~190	$	207
Investments	~~101~~163		90
Taxes receivable	84101		90
Other (2) (3)	~~200~~275		611
Total	$	~~572~~729	$	998

(1)Refer to Note 3 “Revenue from Contracts with Customers” for further information.

(2)Includes $9 million as of December 31, 2024 that was previously classified as “Leases” within Aon’s Annual Report on Form 10-K filed February 18, 2025. The prior year balance has been reclassified to conform to current year presentation.

(3)~~Includes~~As ~~$416 million as~~ of December 31, 2024, includes $416 million of consideration paid into an escrow account related to the acquisition of Griffiths & Armour, which closed on January 1, 2025. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for additional information.

Other Current Liabilities

The components of Other current liabilities are as follows (in millions):

As of	~~June~~September 30,2025		December 31,2024
Deferred revenue (1)	$	~~385~~286	$	280
Leases	~~185~~177		191
Taxes payable	166		260
Liabilities held for sale (2)	166		—
Contingent consideration	58		93
Taxes payable	127		260
Other	1,473		949
Contingent consideration	70		93
Total	$	2,267	$	1,773
Other	1,363		949
Total	$	2,189	$	1,773

(1)During the three and ~~six~~nine months ended ~~June~~September 30, 2025, revenue of $~~236~~258 million and $~~466~~724 million, respectively, was recognized in the Condensed Consolidated Statements of Income that was previously deferred. During the three and ~~six~~nine months ended ~~June~~September 30, 2024, revenue of $~~199~~240 million and $~~378~~618 million, respectively, was recognized in the Condensed Consolidated Statements of Income that was previously deferred.

(2)Refer to Note 7 “Acquisitions and Dispositions of Businesses” for further information.

Other Non-Current Liabilities

The components of Other non-current liabilities are as follows (in millions):

As of	~~June~~September 30,2025		December 31,2024
Taxes payable	$	~~961~~979	$	885
Contingent consideration	~~113~~121		104
Compensation and benefits	5557		61
Deferred revenue	3429		30
Other	8630		64
Total	$	1,~~249~~216	$	1,144

7. Acquisitions and Dispositions of Businesses

Completed Acquisitions

On January 1, 2025, the Company completed the acquisition of 100% of the partnership interests and share capital of Griffiths & Armour, an insurance broker in the United Kingdom., for a purchase price of approximately $418 million, in the Risk Capital segment.

InTotal ~~total,~~acquisitions ~~the Company~~ completed ~~two~~by ~~and nine acquisitions during~~ the ~~three and six months ended June 30, 2025, respectively. The~~ Company ~~completed~~for ~~one acquisition within Risk Capital and one within Human Capital during~~ the three ~~months ended June 30, 2025,~~ and ~~seven~~nine ~~within Risk Capital and two within Human Capital, during the six~~ months ended ~~June~~September 30, 2025. ~~The Company completed eight acquisitions, five within Risk Capital~~ and ~~three~~2024 ~~within~~were ~~Human~~as ~~Capital, during the three and six months ended June 30, 2024~~follows. Acquisitions that impact multiple segments are categorized by the segment primarily impacted. ~~The following table includes the preliminary fair values of consideration transferred, assets acquired, and liabilities assumed as a result of the Company’s acquisitions (in millions):~~

	Six Months EndedJune 30, 2025
	Three Months Ended September 30,			Nine Months Ended September 30,
Consideration transferred:
	2025		2024	2025	2024
Cash (1)	$	631
Risk Capital	1		3	8	8
Deferred and contingent consideration	38
Human Capital	4		5	6	8
Aggregate consideration transferred	$	669
Total	5		8	14	16
Assets acquired:
Goodwill	362
Intangible assets	322
Other assets (2)	126
Total assets acquired	810
Liabilities assumed:
Total liabilities assumed	141
Net assets acquired	$	669

~~(1)Includes $416 million as of December 31, 2024 of consideration paid into an escrow account related to the acquisition of Griffiths & Armour, which closed on January 1, 2025.~~19

~~(2)Includes~~The ~~Cash~~following ~~and~~table ~~cash~~includes ~~equivalents~~the preliminary fair values of ~~$33 million~~consideration ~~and~~transferred, ~~$42 million~~assets inacquired, ~~funds~~and ~~held~~liabilities onassumed ~~behalf~~as a result of ~~clients.~~the Company’s acquisitions (in millions):


	Nine Months Ended September 30, 2025
Consideration transferred:
Cash (1)	$	788
Deferred and contingent consideration	43
Aggregate consideration transferred	$	831
Assets acquired:


Goodwill	476
Intangible assets	379
Other assets (2)	198

Total assets acquired	1,053
Liabilities assumed:


Total liabilities assumed	222
Net assets acquired	$	831

(1)As of December 31, 2024, includes $416 million of consideration paid into an escrow account related to the acquisition of Griffiths & Armour, which closed on January 1, 2025.

(2)Includes Cash and cash equivalents of $39 million and $62 million in funds held on behalf of clients.

The results of operations of these acquisitions are included in the Condensed Consolidated Financial Statements as of the respective acquisition dates. The Company’s results of operations would not have been materially different if these acquisitions had been reported from the beginning of the period in which they were acquired.

Significant Prior Year ~~Acquisitions~~Acquisition

On April 25, 2024, the Company acquired 100% of the outstanding equity interests of NFP Intermediate Holdings A Corp. (the “NFP Transaction”) in a cash-and-stock merger for an aggregate U.S. GAAP purchase price totaling $9.1 billion, including approximately $3.2 billion used to settle indebtedness of NFP and cash consideration to the selling shareholders, and approximately 19 million class A ordinary shares with a fair value of approximately $5.9 billion, based on the Company’s closing stock price on April 25, 2024. In addition, the Company had other adjustments of $3.9 billion for cash and certain assumed liabilities. As part of the NFP Transaction, the Company acquired certain less-than-wholly owned entities, resulting in the recognition of noncontrolling interests, which are described further below.

Aon accounted for its business combinations under the acquisition method of accounting. The ~~Company~~acquisition ~~financed~~method requires the ~~NFP~~Company ~~Transaction,~~to inmeasure ~~part~~identifiable assets acquired and liabilities assumed at their fair values as of the acquisition date, with the ~~net~~excess ~~proceeds~~of ~~from~~the ~~Senior~~consideration ~~Notes~~transferred ~~issued~~over onthose ~~March~~fair 1,values ~~2024~~recorded ~~totaling~~as togoodwill. anDetermining ~~aggregate~~the ~~amount~~fair value of ~~$6.0 billion~~intangible assets acquired requires significant judgments, assumptions, and ~~proceeds~~estimates ~~from~~about afuture $2events, which the Company believes are reasonable.~~0 billion~~ ~~delayed~~Use ~~draw~~of ~~term~~different ~~loan~~estimates ~~which~~and ~~was~~judgments ~~drawn~~could onproduce ~~April~~materially ~~25,~~different ~~2024~~results. ~~Refer~~These estimates are refined over a measurement period, not to ~~Note~~exceed 9one ~~“Debt”~~year ~~for~~from ~~further~~the ~~information~~acquisition date.

Aon accounted for its business combinations under the acquisition method of accounting. The acquisition method requires the Company to measure identifiable assets acquired and liabilities assumed at their fair values as of the acquisition date, with the excess of the consideration transferred over those fair values recorded as goodwill. Determining the fair value of intangible assets acquired requires significant judgements, assumptions, and estimates about future events, which the Company believes are reasonable. Use of different estimates and judgements could produce materially different results. These estimates are refined over a measurement period, not to exceed one year from the acquisition date.

~~The~~Purchase ~~fair values of consideration transferred~~accounting, ~~assets~~including ~~acquired, liabilities assumed, and redeemable and nonredeemable noncontrolling interests are shown below, where purchase accounting and subsequent~~ measurement period adjustments, were finalized in the second quarter of 2025. The ~~following~~fair ~~table~~values ~~includes~~of ~~these~~consideration ~~amounts~~transferred, ~~recognized~~assets asacquired, ofliabilities ~~June 30~~assumed, ~~2025~~and asredeemable aand ~~result~~nonredeemable ofnoncontrolling ~~the~~interests ~~Company’s~~are ~~acquisition~~shown ofbelow ~~NFP~~ (in millions):

	NFP Acquisition
Consideration transferred:
Cash	$	3,247
Class A ordinary shares issued	5,882
Aggregate consideration transferred	$	9,129
Assets acquired:
Cash and cash equivalents	$	294
Receivables	329
Fiduciary assets (1)	411
Goodwill	6,838
Other intangible assets:
Intangible assets	6,775
Customer-related and contract-based	5,950
Other assets (1)	1,362
Tradenames	800
Technology and other	25
Operating lease right-of-use assets	138
Current assets	82
Non-current assets	108
Total assets acquired	14,975
Liabilities assumed:
Accounts payable and accrued liabilities	$	283
Fiduciary liabilities	411
Current liabilities	241
Long-term debt	3,422
Non-current operating lease liabilities	125
Deferred tax liabilities (2)	1,013
Non-current liabilities	158
Other liabilities (3)	1,218
Total liabilities assumed	5,653
Less: Fair value of redeemable noncontrolling interests (3)	(108)
Less: Fair value of redeemable noncontrolling interests (4)	(108)
Less: Fair value of nonredeemable noncontrolling interests	(85)
Net assets acquired	$	9,129

(1)Includes Cash and cash equivalents of $294 million and $277 million ofin funds held on behalf of clients.

(2)As of ~~June~~September 30, 2025, the NFP deferred tax liability related to the U.S. has been netted with the Aon deferred tax asset related to the U.S. and presented as a net deferred tax asset on the Consolidated Statements of Financial Position.

(3)~~The~~Includes ~~fair~~Accounts ~~value~~payable ofand ~~the~~accrued ~~noncontrolling~~liabilities ~~interests~~of ~~acquired~~$283 million ~~was estimated using a DCF model under the income approach~~ and ~~used~~$125 million ~~estimated~~of ~~financial~~Non-current ~~projections~~operating ~~developed~~lease ~~by management applying market participant assumptions~~liabilities.

~~Since~~(4)The ~~the~~fair ~~acquisition~~value ~~date,~~of the ~~Company~~noncontrolling ~~made~~interests ~~measurement~~acquired ~~period~~was ~~adjustments~~estimated ~~related~~using toa DCF model under the ~~NFP~~income ~~Transaction~~approach ~~which~~and ~~primarily~~used ~~included~~estimated ~~the~~financial ~~following:~~projections developed by management applying market participant assumptions.

~~•An~~Since ~~increase~~the acquisition date through the end of the measurement period in the ~~fair~~second ~~value~~quarter of ~~customer~~2025, the Company made measurement period adjustments resulting in a $125 million increase to Intangible assets, a $110 million decrease to Deferred tax liabilities, a $61 million decrease to Other non-~~related~~current assets, and ~~contract-based~~a ~~intangible~~$28 million decrease to Other current assets. These adjustments, along with other insignificant adjustments, cumulated in a total decrease of $~~125~~115 million; to Goodwill.

•A decrease in the fair value of acquired notes receivable of $107 million (recorded within other current assets and other non-current assets); and

•A $110 million decrease in deferred tax liabilities primarily as a result of adjustments to state deferred taxes and deferred taxes recorded on other measurement period adjustments;

Collectively, these adjustments, along with other insignificant adjustments not described above, resulted in a $115 million decrease to goodwill. The measurement period adjustments had an insignificant impact on Net income for the six months ended June 30, 2025.

The purchase price related to the NFP Transaction exceeded the estimated fair value of the tangible and identifiable intangible assets acquired and liabilities assumed and, as a result of the purchase allocation, the Company recorded goodwill of approximately $6.8 billion, which is not deductible for tax purposes. The goodwill recognized is attributable primarily to anticipated growth opportunities and synergies as a result of the NFP Transaction which provides the Company with an expanded presence in the large and fast-growing middle-market. As of June 30, 2025, the company had allocated $2.6 billion of the acquired goodwill to Risk Capital and $4.2 billion of the acquired goodwill to Human Capital.

The fair value of the assets acquired and liabilities assumed in the NFP Transaction approximated their carrying values as of the acquisition date with the exception of customer-related and contract-based assets, tradename, technology, and contingent consideration obligations. Intangible assets acquired had a weighted average useful economic life of 19 years.

Supplemental Pro Forma Combined Information (Unaudited)

The following unaudited pro forma combined financial information presents the combined results of operations of the Company as if the NFP Transaction occurred on January 1, 2023. The unaudited pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the NFP Transaction had taken place on the date indicated or of results that may occur in the future (in millions):

Three Months Ended June 30,

Six Months Ended June 30,

Three Months Ended September 30,

Nine Months Ended September 30,

2024

2023

2024

2023

Revenue

3,~~910~~721

3,~~729~~506

812,~~528~~249

811,~~099~~605

Net income attributable to Aon shareholders

~~465~~343

~~427~~328

1,~~401~~745

1,~~269~~596

The unaudited pro forma financial information is based on historical information of the Company and NFP, along with certain material pro forma adjustments. The material pro forma adjustments primarily consist of (i) incremental amortization expense based on the preliminary fair values of the intangible assets acquired; (ii) interest expense to reflect Aon’s borrowings under the Senior Notes offering and delayed draw term loan; (iii) increased compensation expense relating to the issuance of certain cash and equity plans related to the NFP Transaction; (iv) nonrecurring transaction costs; (v) accounting policy alignment adjustments, and (vi) income tax impact of the aforementioned pro forma adjustments. In addition, the Company reflected pro forma adjustments related to measurement period adjustments.

Completed Dispositions

~~The~~Total ~~Company~~dispositions completed ~~one~~by ~~disposition~~the ~~within~~Company ~~Human~~for ~~Capital in~~ the three and ~~six~~nine months ended ~~June~~September 30, 2025. ~~The~~and ~~Company completed two dispositions, both within Risk Capital, during the three months ended June 30,~~ 2024 ~~and~~were ~~three~~as ~~dispositions, two within Risk Capital and one within Human Capital, during the six months ended June 30, 2024~~follows. Dispositions that impact multiple segments are categorized by the segment primarily impacted.

There were insignificant pretax gains recognized related to dispositions for the three and six months ended June 30, 2025. There were $257 million pretax gains recognized related to dispositions for the three and six months ended June 30, 2024. Gains recognized as a result of a disposition are included in Other income (expense) in the Condensed Consolidated Statements of Income.


	Three Months Ended September 30,		Nine Months Ended September 30,
	2025	2024	2025	2024
Risk Capital	1	1	1	3
Human Capital	1	1	2	2
Total	2	2	3	5

The pretax gains recognized related to dispositions for the three and nine months ended September 30, 2025 were $1 million in both periods. There were $76 million and $333 million of pretax gains recognized related to dispositions for the three and nine months ended September 30, 2024, respectively. Gains recognized as a result of a disposition are included in Other income (expense) in the Condensed Consolidated Statements of Income.

Assets and Liabilities Held for Sale and Subsequent Event

On September 3, 2025, Aon signed a definitive agreement to sell a significant portion of NFP’s wealth businesses including Wealthspire Advisors, Fiducient Advisors, Newport Private Wealth and related platforms to Madison Dearborn Partners, LLC. Assets and liabilities associated with this disposal group are associated with the Human Capital segment and were classified as held for sale as of September 30, 2025. No impairment loss has been recognized in the third quarter of 2025 as the fair value of the disposal group exceeds the carrying amount. Total assets and liabilities for disposal groups classified as held for sale within Other current assets and Other current liabilities in the Condensed Consolidated Statements of Financial Position were $1.3 billion and $166 million, respectively. Of the $1.3 billion total assets classified as held for sale, $754 million relates to intangible assets and $389 million relates to goodwill.

The disposition of the significant majority of NFP’s wealth was completed on October 30, 2025 and total proceeds received on closing was $2.3 billion. Upon the completion of the sale in the fourth quarter, the gain will be recognized within Other income (expense) on the Consolidated Statement of Income.

Other Significant Activity

On May 1, 2017, the Company completed the sale of its benefits administration and business process outsourcing business (the “Divested Business”) to an entity controlled by affiliates of The Blackstone Group L.P. (the “Buyer”) and certain designated purchasers that are direct or indirect subsidiaries of the Buyer. The Buyer purchased all of the outstanding equity interests of the Divested Business, plus certain related assets and liabilities for a purchase price of $4.3 billion in cash paid at closing and deferred consideration of up to $500 million. During the ~~three~~nine ~~and six~~ months ended ~~June~~September 30, 2025, the Company earned $~~88 million and $~~108 million, ~~respectively,~~ of deferred consideration from the Buyer and the other designated purchasers, ~~compared~~which towas ~~$82 million~~all earned ~~during~~in the first six months ~~ended~~of ~~June 30~~2025, ~~2024,~~compared ~~which~~to ~~was~~$2 million ~~all~~and $84 million, respectively, earned induring the ~~first~~three ~~quarter~~and ofnine months ended September 30, 2024. These gains are recorded in Other income (expense) in the Condensed Consolidated Statements of Income. In total, the Company has earned $192 million in deferred consideration related to this transaction as of ~~June~~September 30, 2025.

8. Goodwill and Other Intangible Assets

The changes in the net carrying amount of goodwill for the ~~six~~nine months ended ~~June~~September 30, 2025 are as follows (in millions):

	Risk Capital		Human Capital		Total
Balance as of December 31, 2024	$	8,785	$	6,449	$	15,234
Goodwill related to current year acquisitions	~~346~~450		1626		~~362~~476
Measurement period adjustments related to prior year acquisitions	(11)		(17)		(28)
Goodwill related to current year disposals	(7)		—		(7)
Foreign currency translation and other	301		155		456
Goodwill related to assets held for sale	—		(389)		(389)
Balance as of June 30, 2025	$	9,421	$	6,603	$	16,024
Measurement period adjustments related to prior year acquisitions	(11)		(16)		(27)
Foreign currency translation and other	280		137		417
Balance as of September 30, 2025	$	9,497	$	6,207	$	15,704

Other intangible assets by asset class are as follows (in millions):

	June 30, 2025						December 31, 2024
	September 30, 2025						December 31, 2024
	Gross Carrying Amount		AccumulatedAmortization and Impairment		Net Carrying Amount (1)		Gross Carrying Amount		AccumulatedAmortization and Impairment		Net Carrying Amount
Customer-related and contract-based	$	87,~~417~~660	$	2,~~448~~488	$	5,~~969~~172	$	7,994	$	2,050	$	5,944
Tradenames	~~811~~715		96103		~~715~~612		812		66		746
Technology and other	~~369~~367		~~320~~324		4943		366		313		53
Total	$	98,~~597~~742	$	2,~~864~~915	$	65,~~733~~827	$	9,172	$	2,429	$	6,743

~~The~~(1)As ~~estimated~~of ~~future~~September 30, ~~amortization~~2025, ~~for~~the ~~finite-lived~~Company ~~intangible~~classified $754 million of Intangible assets, net, as ofassets ~~June 30,~~held ~~2025~~for issale aswithin ~~follows~~Other ~~(in~~current ~~millions):~~assets. Refer to Note 7 “Acquisitions and Dispositions of Businesses” for further information.

Remainder of 2025	$	403
2026	739
2027	680
2028	625
2029	576
2030	528
Thereafter	3,182
Total	$	6,733

The estimated future amortization for finite-lived intangible assets as of September 30, 2025 is as follows (in millions):


Remainder of 2025	$	178
2026	661
2027	611
2028	560
2029	515
2030	470
Thereafter	2,832

Total	$	5,827

9. Debt

Notes

In May 2025, Aon Global Limited’s €500 million ($585 million at ~~June~~September 30, 2025 exchange rates) 2.875% Senior Notes due May 2026 were classified as Short-term debt and current portion of long-term debt in the Consolidated Statement of Financial Position as the date of maturity is in less than one year. The Company expects to use cash flow from operations and available cash on hand to repay these Senior Notes.

In December 2024, Aon Global Limited’s $750 million 3.875% Senior Notes due December 2025 were classified as Short-term debt and current portion of long-term debt in the Consolidated Statement of Financial Position as the date of maturity is in less than one year. The Company expects to use cash flow from operations and available cash on hand to repay these Senior Notes.

In June 2024, Aon Global Limited’s $600 million 3.50500% Senior Notes matured and were repaid in full.

On April 25, 2024, Aon North America, Inc. drew its $2 billion delayed draw term loan and used proceeds, together with the proceeds of the Senior Notes issued on March 1, 2024 described below, to pay a portion of cash consideration in connection with the acquisition of NFP, completed on April 25, 2024, (the “NFP Transaction”), to repay certain debt of NFP, and to pay related fees and expenses. The term loan ~~matures~~was set to mature on April 24, 2027 and iswas prepayable at any time. In the ~~second~~third quarter of 2025, Aon North America, Inc. repaid $~~300~~400 million of the outstanding balance under the term loan facility,. ~~and~~As as of ~~June~~September 30, 2025, ~~has~~Aon had repaid $1.26 billion of the outstanding balance. ~~The~~and the remaining outstanding balance iswas $~~800~~400 million. On October 31, 2025, Aon North America, Inc. repaid the remaining $400 million outstanding balance.

On April 2, 2024, Aon plc announced that its wholly owned subsidiary, Randolph Acquisition Corp., commenced cash tender offers for any and all of the outstanding 6.875% Senior Notes due 2028, 4.875% Senior Secured Notes due 2028, 7.500% Senior Secured Notes due 2030 and 8.500% Senior Secured Notes due 2031, each issued by NFP Corp. (together, the “NFP Notes”), upon the terms and subject to the conditions set forth in the Offer to Purchase and Consent Solicitation Statement, dated as of April 2, 2024. The total amount tendered pursuant to the tender offers was approximately $3.3 billion, excluding premiums. On April 26, 2024, Randolph Acquisition Corp. purchased those NFP Notes that were validly tendered and not validly withdrawn prior to April 15, 2024, effecting the early settlement of the offers (the “Early Settlement”). In addition, on April 16, 2024, NFP Corp. delivered notices of redemption of all NFP Notes not validly tendered pursuant to the offers and purchased at the Early Settlement, at a purchase price equal to the price paid to holders of the NFP Notes in connection with the Early Settlement, with a redemption date of April 26, 2024. As a result of the Early Settlement of the offers and the related redemption which occurred on April 26, 2024, no NFP Notes remain outstanding. Aon plc incurred $6 million of debt

Senior Secured Notes due 2030 and 8.500% Senior Secured Notes due 2031, each issued by NFP Corp. (together, the “NFP Notes”), upon the terms and subject to the conditions set forth in the Offer to Purchase and Consent Solicitation Statement, dated as of April 2, 2024. The total amount tendered pursuant to the tender offers was approximately $3.3 billion, excluding premiums. On April 26, 2024, Randolph Acquisition Corp. purchased those NFP Notes that were validly tendered and not validly withdrawn prior to April 15, 2024, effecting the early settlement of the offers (the “Early Settlement”). In addition, on April 16, 2024, NFP Corp. delivered notices of redemption of all NFP Notes not validly tendered pursuant to the offers and purchased at the Early Settlement, at a purchase price equal to the price paid to holders of the NFP Notes in connection with the Early Settlement, with a redemption date of April 26, 2024. As a result of the Early Settlement of the offers and the related redemption which occurred on April 26, 2024, no NFP Notes remain outstanding. Aon plc incurred $6 million of debt extinguishment charges in the second quarter of 2024 related to costs related to the NFP Transaction.

On March 1, 2024, Aon North America, Inc. issued $600 million 5.125% Senior Notes due in March 2027, $1 billion 5.150% Senior Notes due in March 2029, $650 million 5.300% Senior Notes due in March 2031, $1.75 billion 5.450% Senior Notes due in March 2034, and $2 billion 5.750% Senior Notes due in March 2054, totaling to an aggregate amount of $6 billion. The Company intends to use the net proceeds from the offering for general corporate purposes, including a portion of which was used to pay a portion of the cash consideration in connection with the NFP Transaction, to repay certain debt of NFP, and to pay related fees and expenses.

Revolving Credit Facilities

As of ~~June~~September 30, 2025, Aon plc had two primary committed credit facilities outstanding: its $1.0 billion multi-currency U.S. credit facility expiring in September 2027 and its $1.0 billion multi-currency U.S. credit facility expiring in October 2028. In aggregate, these two facilities provide $2.0 billion in available credit.

Each of these primary committed credit facilities includes customary representations, warranties, and covenants, including financial covenants that require Aon to maintain specified ratios of adjusted consolidated EBITDA to consolidated interest expense and consolidated debt to adjusted consolidated EBITDA, in each case, tested quarterly. Aon did not have borrowings under either of these primary committed credit facilities as of ~~June~~September 30, 2025 or December 31, 2024. Additionally, Aon was in compliance with the financial covenants and all other covenants contained therein during the rolling 12 months ended ~~June~~September 30, 2025 and December 31, 2024.

Commercial Paper

Aon Corporation has established a U.S. commercial paper program (the “U.S. Program”) and Aon Global Holdings plc has established a European multi-currency commercial paper program (the “European Program” and, together with the U.S. Program, the “Commercial Paper Programs”). Commercial paper may be issued in aggregate principal amounts of up to approximately $1.3 billion under the U.S. Program and €625 million ($731 million at ~~June~~September 30, 2025 exchange rates) under the European Program, not to exceed the amount of the Company’s committed credit facilities, which was $2.0 billion at ~~June~~September 30, 2025. The aggregate capacity of the Commercial Paper Program remains fully backed by the Company’s committed credit facilities. The U.S. Program was fully and unconditionally guaranteed by Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Global Holdings plc and the European Program was fully and unconditionally guaranteed by Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Corporation.

Commercial paper outstanding, which is included in Short-term debt and current portion of long-term debt in the Company’s Condensed Consolidated Statements of Financial Position, is as follows (in millions):

	June 30, 2025		December 31, 2024
	September 30, 2025		December 31, 2024
Commercial paper outstanding	$	~~501~~399	$	—

The weighted average commercial paper outstanding and its related interest rates are as follows (in millions, except percentages):

	Three Months Ended June 30,						Six Months Ended June 30,
	Three Months Ended September 30,						Nine Months Ended September 30,
	2025			2024			2025			2024
Weighted average commercial paper outstanding	$	~~856~~347		$	3456		$	~~528~~467		$	~~207~~157
Weighted average interest rate of commercial paper outstanding	4.2402		%	5.5051		%	4.3023		%	5.6362		%

10. Income Taxes

The effective tax rate on Net income was 1521.53% and 19.38% for the three and ~~six~~nine months ended ~~June~~September 30, 2025, respectively. The effective tax rate on Net income was 2220.9% and 2322.18% for the three and ~~six~~nine months ended ~~June~~September 30, 2024, respectively.

For the three and ~~six~~nine months ended ~~June~~September 30, 2025, the quarter-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items. The year-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the tax benefit associated with the ~~anticipated~~ sale of certain assets and liabilities ~~classified as held for sale~~ and share-based payments partially offset by the unfavorable impact of other discrete items.

For the three and six months ended June 30, 2024, the tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the favorable impacts of share-based payments offset by the unfavorable impact of discrete items. 24

For the three and nine months ended September 30, 2024, the quarter-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items. The year-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the favorable impacts of share-based payments offset by the unfavorable impact of other discrete items.

11. Shareholders’ Equity

Ordinary Shares

Aon has a share repurchase program authorized by the Company’s Board of Directors (“the Repurchase Program”). The Repurchase Program was established in April 2012 with $5.0 billion in authorized repurchases, and was increased by $5.0 billion in authorized repurchases in each of November 2014, June 2017, and November 2020, and by $7.5 billion in February 2022 for a total of $27.5 billion in repurchase authorizations.

Under the Repurchase Program, the Company’s class A ordinary shares may be repurchased through the open market or in privately negotiated transactions, from time to time, based on prevailing market conditions, and will be funded from available capital.

The following table summarizes the Company’s share repurchase activity (in millions, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Shares repurchased	0.7		0.89		12.30		12.65
Average price per share	$	~~361~~362.2500	$	~~298~~339.0931	$	~~376~~371.7671	$	~~304~~316.2057
Repurchase costs recorded to accumulated deficit	$	250	$	~~250~~304	$	~~500~~750	$	~~500~~804

At ~~June~~September 30, 2025, the remaining authorized amount for share repurchases under the Repurchase Program was approximately $1.86 billion. Under the Repurchase Program, the Company has repurchased a total of ~~173~~174.52 million shares for an aggregate cost of approximately $25.79 billion.

Weighted Average Ordinary Shares

Weighted average ordinary shares outstanding are as follows (in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	Three Months Ended September 30,		Nine Months Ended September 30,
	2025	2024	2025	2024
Basic weighted average ordinary shares outstanding	~~216~~215.27	~~212~~217.54	216.31	~~205~~209.87
Dilutive effect of potentially issuable shares	1.10	01.80	1.32	0.9
Diluted weighted average ordinary shares outstanding	~~217~~216.37	~~213~~218.34	217.63	~~206~~210.76

Potentially issuable shares are not included in the computation of Diluted net income per share attributable to Aon shareholders if their inclusion would be antidilutive. There were ~~0.4 million~~an ~~and~~insignificant ~~0.1 million~~number of shares excluded from the calculation for the three and ~~six~~nine months ended ~~June~~September 30, 2025~~, respectively~~. There were ~~1.4 million~~no shares and 0.61 million shares excluded from the calculation for the three and ~~six~~nine months ended ~~June~~ September 30, 2024~~, respectively~~.

Accumulated Other Comprehensive Loss

Changes in Accumulated other comprehensive loss by component, net of related tax, are as follows (in millions):

	Change in Fair Value of Financial Instruments (1)		Foreign Currency Translation Adjustments		Postretirement Benefit Obligation (2)		Total
Balance at January 1, 2025	$	74	$	(2,051)	$	(2,768)	$	(4,745)
Other comprehensive income (loss) before reclassifications, net	1710		~~843~~752		(78)		~~853~~754
Amounts reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income (loss)	(68)		—		72110		66102
Tax expense	2		—		(1928)		(1726)
Amounts reclassified from accumulated other comprehensive income (loss), net	(46)		—		5382		4976
Net current period other comprehensive income (loss)	134		~~843~~752		4674		~~902~~830
Balance at June 30, 2025	$	87	$	(1,208)	$	(2,722)	$	(3,843)
Balance at September 30, 2025	$	78	$	(1,299)	$	(2,694)	$	(3,915)

	Change in Fair Value of Financial Instruments (1)		Foreign Currency Translation Adjustments		Postretirement Benefit Obligation (2)		Total
Balance at January 1, 2024	$	2	$	(1,584)	$	(2,791)	$	(4,373)
Other comprehensive income (loss) before reclassifications, net	7585		~~(220)~~129		(1340)		~~(158)~~174
Amounts reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive income	2(1)		—		70106		72105
Tax expense	~~(1)~~—		—		(1827)		(1927)
Amounts reclassified from accumulated other comprehensive income, net	(1)		—		5279		5378
Net current period other comprehensive income (loss)	7684		~~(220)~~129		39		~~(105)~~252
Balance at June 30, 2024	$	78	$	(1,804)	$	(2,752)	$	(4,478)
Balance at September 30, 2024	$	86	$	(1,455)	$	(2,752)	$	(4,121)

(1)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Total revenue, Interest expense, and Compensation and benefits in the Condensed Consolidated Statements of Income. Refer to Note 13 “Derivatives and Hedging” for further information regarding the Company’s derivative and hedging activity.

(2)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Other income (expense) in the Condensed Consolidated Statements of Income.

12. Employee Benefits

The following table provides the components of the net periodic (benefit) cost recognized in the Condensed Consolidated Statements of Income for Aon’s significant U.K., U.S., and other major pension plans, which are located in the Netherlands and Canada. Service cost is reported in Compensation and benefits and all other components are reported in Other income (expense) as follows (in millions):

	Three Months Ended June 30,
	Three Months Ended September 30,
	U.K.				U.S.				Other
	2025		2024		2025		2024		2025		2024
Service cost	$	—	$	—	$	—	$	—	$	—	$	—
Interest cost	3938		3637		2526		23		10		10
Expected return on plan assets, net of administration expenses	(4546)		(4748)		(30)		(3533)		(1413)		(14)
Amortization of prior-service cost	—1		—1		—		—		—		—
Amortization of net actuarial loss	2223		21		98		87		4		34
Net periodic cost (benefit)	$	16	$	1011	$	4	$	(43)	$	—1	$	~~(1)~~—
	Six Months Ended June 30,
	Nine Months Ended September 30,
	U.K.				U.S.				Other
	2025		2024		2025		2024		2025		2024
Service cost	$	—	$	—	$	—	$	—	$	—	$	—
Interest cost	76114		71108		5177		4669		1929		1929
Expected return on plan assets, net of administration expenses	(88134)		(94142)		(6090)		(68101)		(2639)		(2741)
Amortization of prior-service cost	12		12		—		—		—		—
Amortization of net actuarial loss	4467		4162		1826		1522		711		610
Net periodic (benefit) cost	$	3349	$	1930	$	913	$	(710)	$	—1	$	(2)

Contributions

Assuming no additional contributions are agreed to with, or required by, the pension plan trustees, the Company expects to make total cash contributions of approximately $2 million, $76 million, and $10 million (at December 31, 2024 exchange rates) to its significant U.K., U.S., and other major pension plans, respectively, during 2025. The following table summarizes contributions made to the Company’s significant pension plans (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Contributions to U.K. pension plans	$	1	$	1	$	23	$	23
Contributions to U.S. pension plans	1723		413		4467		1831
Contributions to other major pension plans	62		52		810		79
Total contributions	$	2426	$	1016	$	5480	$	2743

13. Derivatives and Hedging

The Company is exposed to market risks, including changes in foreign currency exchange rates and interest rates. To manage the risk related to these exposures, the Company enters into various derivative instruments that reduce these risks by creating offsetting exposures. The Company does not enter into derivative transactions for trading or speculative purposes.

Foreign Exchange Risk Management

The Company is exposed to foreign exchange risk when it earns revenues, pays expenses, enters into monetary intercompany transfers or other transactions denominated in a currency that differs from its functional currency. The Company uses foreign exchange derivatives, typically forward contracts, options and cross currency swaps, to reduce its overall exposure to the effects of currency fluctuations on cash flows. These exposures are hedged, on average, for less than two years. These derivatives are

accounted for as hedges, and changes in fair value are recorded each period in Other comprehensive income (loss) in the Condensed Consolidated Statements of Comprehensive Income.

The Company also uses foreign exchange derivatives, typically forward contracts and options, to economically hedge the currency exposure of the Company’s global liquidity profile, including monetary assets or liabilities that are denominated in a non-functional currency of an entity, typically on a rolling 90-day basis, but may be for up to one year in the future. These derivatives are not accounted for as hedges, and changes in fair value are recorded each period in Other income (expense) in the Condensed Consolidated Statements of Income.

The notional and fair values of derivative instruments are as follows (in millions):

	Notional Amount				Net Amount of Derivative Assets Presented in the Statements of Financial Position (1)				Net Amount of Derivative Liabilities Presented in the Statements of Financial Position (2)
	June 30,2025		December 31,2024		June 30,2025		December 31,2024		June 30,2025		December 31,2024
	September 30,2025		December 31,2024		September 30,2025		December 31,2024		September 30,2025		December 31,2024
Foreign exchange contracts
Accounted for as hedges	$	~~480~~419	$	597	$	3017	$	25	$	—2	$	—
Not accounted for as hedges (3)	~~580~~500		394		1		—		—1		1
Total	$	~~1,060~~919	$	991	$	3118	$	25	$	—3	$	1

(1)Included within Other current assets ($2618 million at ~~June~~September 30, 2025 and $15 million at December 31, 2024) or Other non-current assets ($5 10 million at ~~June 30, 2025 and $10 million at~~ December 31, 2024).

(2)Included within Other current liabilities ($2 million at September 30, 2025 and $1 million at December 31, 2024) or Other non-current liabilities ($1 million at September 30, 2025).

(3)These contracts typically are for 90-day durations and executed close to the last day of the most recent reporting month, thereby resulting in nominal fair values at the balance sheet date.

The amounts of derivative gains (losses) recognized in the Condensed Consolidated Financial Statements are as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Gain recognized in Accumulated other comprehensive loss	$	20	$	4	$	22	$	101
Gain (loss) recognized in Accumulated other comprehensive loss	$	(9)	$	13	$	13	$	114

The amounts of derivative gains (losses) reclassified from Accumulated other comprehensive loss to the Condensed Consolidated Statements of Income are as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Total revenue	$	72	$	2	$	57	$	~~(2)~~—
Interest expense	$	1—	$	—1	$	1	$	—1
Total	$	82	$	23	$	68	$	~~(2)~~1

The Company estimates that approximately $156 million of pretax gains currently included within Accumulated other comprehensive loss will be reclassified into earnings in the next twelve months.

During the three and ~~six~~nine months ended ~~June~~September 30, 2025, the Company recorded a ~~gain~~loss of $245 million and a gain of $3732 million, respectively, in Other income (expense) for foreign exchange derivatives not designated or qualifying as hedges. During the three and ~~six~~nine months ended ~~June~~September 30, 2024, the Company recorded ~~losses~~a gain of $69 million and ~~$9 million~~no net gain, respectively, in Other income (expense) for foreign exchange derivatives not designated or qualifying as hedges.

14. Fair Value Measurements and Financial Instruments

Accounting standards establish a three-tier fair value hierarchy that prioritizes the inputs used in measuring fair values as follows:

•Level 1 — observable inputs such as quoted prices for identical assets in active markets;

•Level 2 — inputs other than quoted prices for identical assets in active markets, that are observable either directly or indirectly; and

•Level 3 — unobservable inputs in which there is little or no market data which requires the use of valuation techniques and the development of assumptions.

The following methods and assumptions are used to estimate the fair values of the Company’s financial instruments:

Money market funds consist of institutional prime, treasury, and government money market funds. The Company reviews treasury and government money market funds to obtain reasonable assurance that the fund net asset value is $1 per share, and reviews the floating net asset value of institutional prime money market funds for reasonableness.

Equity investments consist of equity securities and equity derivatives valued using the closing stock price on a national securities exchange. Over-the-counter equity derivatives are valued using observable inputs such as underlying prices of the underlying security and volatility. On a sample basis, the Company reviews the listing of Level 1 equity securities in the portfolio, agrees the closing stock prices to a national securities exchange, and independently verifies the observable inputs for Level 2 equity derivatives and securities.

Fixed income investments consist of certain categories of bonds and derivatives. Corporate, government, and agency bonds are valued by pricing vendors who estimate fair value using recently executed transactions and proprietary models based on observable inputs, such as interest rate spreads, yield curves, and credit risk. Asset-backed securities are valued by pricing vendors who estimate fair value using DCF models utilizing observable inputs based on trade and quote activity of securities with similar features. Fixed income derivatives are valued by pricing vendors using observable inputs such as interest rates and yield curves. The Company obtains an understanding of the models, inputs, and assumptions used in developing prices provided by its vendors through discussions with the fund managers. The Company independently verifies the observable inputs, as well as assesses assumptions used for reasonableness based on relevant market conditions and internal Company guidelines. If an assumption is deemed unreasonable, based on internal Company guidelines, it is then reviewed by management and the fair value estimate provided by the vendor is adjusted, if deemed appropriate. These adjustments do not occur frequently and historically are not material to the fair value estimates used in the Condensed Consolidated Financial Statements.

Derivatives are carried at fair value, based upon industry standard valuation techniques that use, where possible, current market-based or independently sourced pricing inputs, such as interest rates, currency exchange rates, or implied volatility.

Debt is carried at outstanding principal balance, less any unamortized issuance costs, discount or premium. Fair value is based on quoted market prices or estimates using DCF analyses based on current borrowing rates for similar types of borrowing arrangements.

The following tables present the categorization of the Company’s assets and liabilities that are measured at fair value on a recurring basis at ~~June~~September 30, 2025 and December 31, 2024 (in millions):

	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at ~~June~~September 30, 2025
Assets
Money market funds (1)	$	4,~~129~~198	$	—	$	—	$	4,~~129~~198
Other investments
Government bonds	$	—	$	1	$	—	$	1
Derivatives (2)
Gross foreign exchange contracts	$	—	$	6341	$	—	$	6341
Liabilities
Derivatives (2)
Gross foreign exchange contracts	$	—	$	3226	$	—	$	3226


	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2024
Assets
Money market funds (1)	$	3,419	$	—	$	—	$	3,419
Other investments

Government bonds	$	—	$	1	$	—	$	1

Derivatives (2)
Gross foreign exchange contracts	$	—	$	40	$	—	$	40
Liabilities			0
Derivatives (2)
Gross foreign exchange contracts	$	—	$	16	$	—	$	16

(1)Included within Fiduciary assets or Short-term investments in the Condensed Consolidated Statements of Financial Position, depending on their nature and initial maturity.

(2)Refer to Note 13 “Derivatives and Hedging” for additional information regarding the Company’s derivatives and hedging activity.

There were no transfers of assets or liabilities between fair value hierarchy levels in the three and ~~six~~nine months ended ~~June~~September 30, 2025 or 2024. The Company recognized no realized or unrealized gains or losses in the Condensed Consolidated Statements of Income during the three and ~~six~~nine months ended ~~June~~September 30, 2025 or 2024 related to assets and liabilities measured at fair value using unobservable inputs.

The fair value of debt is classified as Level 2 of the fair value hierarchy. The following table provides the carrying value and fair value for the Company’s term debt (in millions):

	June 30, 2025				December 31, 2024
	September 30, 2025				December 31, 2024
	Carrying Value		Fair Value		Carrying Value		Fair Value
Current portion of long-term debt	$	1,~~334~~335	$	1,335	$	749	$	744
Long-term debt	$	15,~~451~~055	$	14,~~806~~602	$	16,265	$	15,308

15. Claims, Lawsuits, and Other Contingencies

Legal

Aon and its subsidiaries are subject to numerous claims, tax assessments, lawsuits, and proceedings that arise in the ordinary course of business, which frequently include E&O claims. The damages claimed in these matters are or may be substantial, including, in many instances, claims for punitive, treble, or extraordinary damages. While Aon maintains meaningful E&O insurance and other insurance programs to provide protection against certain losses that arise in such matters, Aon has exhausted or materially depleted its coverage under some of the policies that protect the Company and, consequently, is self-insured or materially self-insured for some claims, including coverage from Aon’s self-insurance program. Accruals for these exposures, and related insurance receivables, when applicable, are included in the Condensed Consolidated Statements of Financial Position and have been recognized in Other general expense in the Condensed Consolidated Statements of Income to the extent that losses are deemed probable and are reasonably estimable. These amounts are adjusted from time to time as developments warrant. Matters that are not probable and reasonably estimable are not accrued for in the financial statements.

The Company’s contingencies and exposures are subject to significant uncertainties, and the determination of likelihood of a loss and estimating any such loss can be complex. The Company is therefore, in certain matters, unable to estimate the range of reasonably possible loss. Although management at present believes that the ultimate outcome of such matters, individually or in the aggregate, will not have a material adverse effect on the consolidated financial position of Aon, legal proceedings are subject to inherent uncertainties and unfavorable rulings or other events. Unfavorable resolutions could include substantial monetary or punitive damages imposed on Aon or its subsidiaries. If unfavorable outcomes of these matters were to occur, future results of operations or cash flows for any particular quarterly or annual period could be materially adversely affected. Certain significant legal proceedings involving us or our subsidiaries are described below.

Current Matters

Aon faces legal action arising out of a fatal plane crash in November 2016. Aon U.K. Limited placed an aviation civil liability reinsurance policy for the Bolivian insurer of the airline. After the crash, the insurer determined that there was no coverage

under the airline’s insurance policy due to the airline’s breach of various policy conditions. In November 2018, the owner of the aircraft filed a claim in Bolivia against Aon, the airline, the insurer and the insurance broker. The claim is for $16 million plus any liability the owner has to third parties. In November 2019, a federal prosecutor in Brazil filed a public civil action naming three Aon entities as defendants, along with the airline, the insurer and the lead reinsurer. That claim seeks pecuniary damages for families affected by the crash in the sum of $300 million; or, in the alternative, $50 million; or, in the alternative, $25 million; plus “moral damages” of an equivalent sum. Separately, in March 2020, the Brazilian Federal Senate invited Aon to give evidence to a Parliamentary Commission of Inquiry in an investigation into the accident. Aon cooperated with that inquiry. In August 2020, 43 individuals (surviving passengers and estates of the deceased) filed a motion in the Circuit Court of the 11th Judicial Circuit in and for Miami-Dade County, Florida, seeking permission to commence proceedings against Aon (and the insurer and reinsurers) for claims totaling $844 million. In December 2022, the High Court in England granted an anti-suit injunction, restricting the 43 individuals who previously filed a motion in the Circuit Court of the 11th Judicial Circuit in and for Miami Dade County, Florida, from continuing litigation in the Circuit Court of the 11th Judicial Circuit against Aon. In June 2025, the 43 individuals filed a counterclaim against Aon in the UK seeking damages. The claim is alleged to be governed in the alternative by the laws of three different jurisdictions and asserts damages in the amount of $16.7 million. The claim alleges that certain aspects of the damages have yet to be calculated. Aon believes that it has meritorious defenses and intends to vigorously defend itself against the remaining claims.

Certain of the Company’s clients and counterparties have initiated or indicated that they may initiate legal proceedings against the Company following allegations in July 2023 that fraudulent letters of credit were issued in the name of third-party banks in connection with transactions for which capital was arranged by Vesttoo Ltd. (“Vesttoo”). Vesttoo was one of the third parties that identified capital providers to collateralize insurance and reinsurance obligations of the Company’s clients and counterparties, including in connection with property and casualty insurance, cyber insurance, and collateral protection insurance. In certain transactions in which Vesttoo identified third party capital providers to collateralize reinsurance obligations, including transactions in which the Company or its affiliates provided brokerage or other services, some letters of credit from third party banks are alleged to have been fraudulent. The pending or threatened legal proceedings against the Company by clients and counterparties ~~– including by the liquidating trust formed to pursue claims on behalf of the Vesttoo bankruptcy estate –~~ allege, among other theories of liability, that in certain circumstances the Company failed to comply with its alleged duty to procure appropriate letters of credit. In particular, on November 30, 2023, Clear Blue Insurance Company and certain of its affiliates (collectively, “Clear Blue”) filed a lawsuit in New York State Supreme Court against Aon plc and Aon Insurance Managers (Bermuda) Ltd. alleging such claims. ~~While~~Clear Blue and Aon ~~has~~jointly ~~settled~~filed ~~and/or~~a isstipulation inof ~~discussions~~dismissal with prejudice on September 26, 2025. On August 8, 2025, the liquidating trust formed to ~~settle~~pursue claims on behalf of the Vesttoo bankruptcy estate filed a complaint in the U.S. Bankruptcy Court for the District of Delaware against the Company and certain ~~claims~~of its subsidiaries, among other parties. The trust’s complaint alleges, among other theories of liability, that Aon is liable for having induced parties into taking on collateral protection insurance risks, notwithstanding the fact that fraudulent letters of credit had been arranged by Vesttoo employees and co-conspirators. Aon believes that it has meritorious defenses and intends to vigorously defend itself against ~~those~~such claims ~~that are not settled~~. In the fourth quarter of 2023, the Company recognized actual or anticipated legal settlement expenses in connection with these matters of $197 million, of which a potentially significant amount may be recoverable in future periods. In the third quarter of 2025, certain legal settlement expenses and recoveries were recognized resulting in a $23 million reduction of this amount. Aon has sought and will continue to seek recourse against responsible third parties where appropriate. In addition, in August 2023, joint provisional liquidators were appointed over one of the Company’s subsidiaries in Bermuda with respect to segregated accounts that were impacted by the allegedly fraudulent letters of credit. The joint provisional liquidators were released from their appointment on July 3, 2024. Aon continues to cooperate with regulators in Bermuda, and other regulatory authorities could initiate investigations or proceedings against the Company or third parties.

Guarantees and Indemnifications

The Company provides a variety of guarantees and indemnifications to its customers and others. The maximum potential amount of future payments represents the notional amounts that could become payable under the guarantees and indemnifications if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or other methods. These amounts may bear no relationship to the expected future payments, if any, for these guarantees and indemnifications. Any anticipated amounts payable are included in the Condensed Consolidated Financial Statements, and are recorded at fair value.

The Company expects that, as prudent business interests dictate, additional guarantees and indemnifications may be issued from time to time.

Guarantee of Registered Securities

On June 22, 2023, Aon plc, Aon Global Limited, Aon Global Holdings plc, Aon Corporation, and Aon North America, Inc., and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), as applicable, entered into supplemental indentures, each dated June 22, 2023, amending each of the following indentures (as amended, supplemented or modified from time to time) to add for the benefit of the holders of the instruments issued thereunder a full and unconditional guarantee of Aon North America, Inc. thereunder: (i) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated January 13, 1997); (ii) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and

time to time) to add for the benefit of the holders of the instruments issued thereunder a full and unconditional guarantee of Aon North America, Inc. thereunder: (i) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated January 13, 1997); (ii) Second Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated April 2, 2012, amending and restating the Indenture, dated September 10, 2010); (iii) Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated December 12, 2012); (iv) Second Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Amended and Restated Indenture, dated May 20, 2015, amending and restating the Indenture, dated May 24, 2013); (v) Amended and Restated Indenture, dated April 1, 2020, among Aon plc, Aon Corporation, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated November 13, 2015); and (vi) Amended and Restated Indenture, dated April 1, 2020, among Aon Corporation, Aon plc, Aon Global Limited, Aon Global Holdings plc and the Trustee (amending and restating the Indenture, dated December 3, 2018).

On February 28, 2024, Aon plc, Aon Corporation, Aon Global Holdings plc, and Aon Global Limited (together with Aon plc, Aon Corporation and Aon Global Holdings, plc, the “Guarantors”), Aon North America, Inc. and the Trustee entered into an indenture and first supplemental indenture, each dated March 1, 2024, to add for the benefit of the holders of the instruments issued thereunder a full and unconditional guarantee by the Guarantors of the obligations of Aon North America, Inc. thereunder.

Letters of Credit

Aon has entered into a number of arrangements whereby the Company’s performance on certain obligations is guaranteed by a third party through the issuance of LOCs. The Company had total LOCs outstanding of approximately $~~126~~125 million at ~~June~~September 30, 2025, and $124 million at December 31, 2024. These LOCs cover the beneficiaries related to certain of Aon’s U.S. and Canadian secure non-qualified pension plan schemes, reinsurance obligations related to Aon’s own E&O liability insurance program, and secure deductible retentions for Aon’s own workers compensation program. The Company has also obtained LOCs to cover contingent payments for taxes and other business obligations to third parties, and other guarantees for miscellaneous purposes at its international subsidiaries.

Premium Payments

The Company has certain contractual contingent guarantees for premium payments owed by clients to certain insurance companies. The maximum exposure with respect to such contractual contingent guarantees was approximately $~~161~~143 million at ~~June~~September 30, 2025 compared to $162 million at December 31, 2024.

16. Segment Information

Reportable segments were determined using a management approach. They are consistent with how the CODM assesses the performance of the Company and allocates resources based on two segments: Risk Capital and Human Capital. This segmentation allows the CODM, who is our Chief Executive Officer and President, to align the assessment of performance and allocation of resources, based on segment operating income and operating margin, with how the Company addresses client need, accelerating its Aon United strategy through growth in Risk Capital and Human Capital and maximizing value for Aon and its shareholders.

Risk Capital supports clients through its Commercial Risk and Reinsurance solution lines. Commercial Risk includes insurance and specialty brokerage, global risk consulting, captives management, and Affinity programs. Reinsurance includes treaty reinsurance, facultative reinsurance, the Strategy and Technology Group, and capital markets.

Human Capital supports clients through its Health and Wealth solution lines. Health includes consulting and brokerage, consumer benefits solutions, and talent advisory services. Wealth includes retirement consulting, pension administration, and investments consulting. Refer to Note 3 “Revenue from Contracts with Customers” for information on revenue by principal service line.

The Company does not present assets by reportable segment and this information is not used by the CODM to assess the performance of, or allocate resources to, the Company’s reportable segments. As such, segment assets are not provided to the CODM.

The following tables include information about ~~our~~Aon’s reportable segments, including total segment revenue, consolidated revenue, segment operating income, and income before income taxes:

Three Months Ended June 30,

Three Months Ended September 30,

Risk Capital

Human Capital

Corporate/Eliminations

Total Consolidated

2025

2024

2025

2024

2025

2024

2025

2024

Revenue

Total revenue (1)

$2,~~866~~525

$2,~~650~~355

$1,~~291~~475

$1,~~125~~369

$(23)

$(153)

$43,~~155~~997

$3,~~760~~721

Expenses

Compensation and benefits

1,~~541~~455

1,~~390~~368

~~796~~776

~~710~~740

2328

3042

2,~~360~~259

2,~~130~~150

Information technology

8894

4544

3947

—1

~~136~~140

~~132~~141

Premises

5456

5457

3028

2831

—

8288

Other expenses (2)

~~319~~335

~~329~~276

~~303~~295

~~258~~349

9367

~~173~~94

~~715~~697

~~760~~719

Total operating expenses

21,~~002~~940

1,~~866~~794

1,~~174~~143

1,~~035~~167

~~120~~98

~~203~~137

3,~~296~~181

3,~~104~~098

Operating income

$~~864~~585

$~~784~~561

$~~117~~332

$90202

$(~~122~~101)

$(~~218~~140)

$~~859~~816

$~~656~~623

Operating margin

3023.12%

2923.68%

922.15%

814.08%

20.74%

1716.47%

Non-operating expenses

Interest income

—

314

Interest expense

(~~212~~206)

(~~225~~213)

Other income (expense)

56(13)

~~236~~35

Income before income taxes

$~~703~~597

$~~698~~449

Six Months Ended June 30,

Nine Months Ended September 30,

Risk Capital

Human Capital

Corporate/Eliminations

Total Consolidated

2025

2024

2025

2024

2025

2024

2025

2024

Revenue

Total revenue (1)

$68,~~057~~582

$57,~~625~~980

$24,~~836~~311

$23,~~228~~597

$(912)

$(2326)

$812,~~884~~881

$711,~~830~~551

Expenses

Compensation and benefits

34,~~002~~457

24,~~744~~112

12,~~570~~346

1,~~237~~977

3765

3274

46,~~609~~868

46,~~013~~163

Information technology

~~178~~272

~~182~~275

90134

74121

—1

~~272~~412

~~256~~397

Premises

~~106~~162

~~104~~161

5987

4980

—

~~167~~252

~~153~~241

Other expenses (2)

~~710~~1,045

~~626~~902

~~597~~892

~~391~~740

~~209~~276

~~270~~364

12,~~516~~213

12,~~287~~006

Total operating expenses

35,~~996~~936

35,~~656~~450

23,~~316~~459

12,~~751~~918

~~252~~350

~~302~~439

69,~~564~~745

58,~~709~~807

Operating income

$2,~~061~~646

$12,~~969~~530

$~~520~~852

$~~477~~679

$(~~261~~362)

$(~~325~~465)

$23,~~320~~136

$2,~~121~~744

Operating margin

3430.08%

3531.07%

1819.38%

2118.49%

2624.13%

2723.18%

Non-operating expenses

Interest income

5963

Interest expense

(~~418~~624)

(~~369~~582)

Other income (expense)

4633

~~311~~346

Income before income taxes

$12,~~953~~550

$2,~~122~~571

(1)Includes fiduciary investment income of $6072 million and $~~125~~201 million, respectively, in Risk Capital and ~~less than~~ $1 3 million and $27 million, respectively, in Human Capital for the three and ~~six~~nine months ended ~~June~~September 30, 2025. Includes fiduciary investment income of $7383 million and $~~151~~234 million, respectively, in Risk Capital and $2 million and $35 million, respectively, in Human Capital for the three and ~~six~~nine months ended ~~June~~September 30, 2024.

(2)Includes expenses related to Depreciation of fixed assets, Amortization and impairment of intangible assets, Accelerating Aon United Program expenses, and Other general expenses.

Revenue

Reportable segment revenue includes inter-segment revenue of less than $1 million and $5 million, respectively, for Risk Capital and $23 million and $47 million, respectively, for Human Capital for the three and ~~six~~nine months ended ~~June~~September 30, 2025, compared to ~~$10~~less than $1 million and $16 million, respectively, for Risk Capital and $53 million and $710 million, respectively, for Human Capital for the three and ~~six~~nine months ended ~~June~~September 30, 2024. This inter-segment revenue is eliminated as a Corporate adjustment to reconcile to the Company's Consolidated Total revenue.

Segment Operating Expenses

The Company’s segment operating expenses are generally attributed to the function of the business. Segment expenses exclude governance costs, post-retirement benefits, and other costs that are not directly attributable to a specific segment. These expenses are considered ~~corporate expenses~~Corporate/~~eliminations~~Eliminations.

Non-~~operating~~Operating Income (Expenses)

The Company’s non-operating income (expenses) primarily consist of Interest income, Interest expense, and Other income (expense) which are not allocated to our reportable segments, as the CODM assesses performance based on operating income results. Interest income represents income earned, net of expense, on ~~Cash~~operating ~~and~~cash balances, including our multi-currency cash ~~equivalents~~pool, and ~~Short~~other income-~~term~~producing investments. Interest income does not include interest earned on funds held on behalf of clients. If interest expense on these assets exceeds interest income for the period, the net amount is reported as interest expense for both the quarterly and year-to-date periods. Interest expense represents the cost of debt obligations and net interest expense on operating cash balances and other income-producing investments. Other income (expense) consists of equity earnings, realized gains or losses on the sale of investments, gains on the disposal of businesses, gains or losses on derivatives, and gains or losses on foreign currency remeasurement.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

EXECUTIVE SUMMARY OF ~~SECOND~~THIRD QUARTER 2025 FINANCIAL RESULTS

Aon plc is a leading global professional services firm providing a broad range of Risk Capital and Human Capital solutions. Through our experience, global reach, and comprehensive analytics, we help clients meet rapidly changing, increasingly complex, and interconnected challenges related to risk and people. We are committed to accelerating innovation to address unmet and evolving client needs so that our clients are better informed, better advised, and able to make better decisions to protect and grow their business. Management remains focused on strengthening Aon and uniting the firm with a portfolio of Risk Capital and Human Capital capabilities enabled by data and analytics and a united operating model to deliver additional insight, connectivity, and efficiency.

Financial Results

The following is a summary of our ~~second~~third quarter of 2025 financial results.

•Revenue increased $~~395~~276 million, or 117%, to $4.20 billion compared to the prior year period. The increase reflects 67% organic revenue growth, ~~the contribution from NFP~~ and a 1% favorable impact from foreign currency translation, partially offset by a 1% unfavorable impact from acquisitions, divestitures and other items. Risk Capital revenue increased $~~216~~170 million, or 87%, to $2.95 billion and Human Capital revenue increased $~~166~~106 million, or 158%, to $1.35 billion compared to the prior year period. For the first ~~six~~nine months of 2025, Revenue increased $1.13 billion, or 1312%, to $812.9 billion compared to the prior year period. The increase reflects the contribution from NFP, 5and 6% organic revenue growth~~, and a 1% unfavorable impact from foreign currency translation~~. Risk Capital revenue increased $~~432~~602 million, or 8%, to $68.16 billion and Human Capital revenue increased $~~608~~714 million, or 2720%, to $24.83 billion compared to the prior year period.

•Operating expenses increased $~~192~~83 million, or 63%, to $3.32 billion compared to the prior year period due primarily to ~~the inclusion of NFP’s ongoing operating expenses,~~ an increase in ~~intangible asset amortization associated with the NFP acquisition and an increase in~~ expense associated with 67% organic revenue growth and ~~investments~~an inunfavorable ~~long-term~~impact ~~growth~~from foreign currency translation, partially offset by ~~transaction costs incurred in the prior year period,~~ lower Accelerating Aon United program ~~expense~~expenses, ~~and~~ $35 million of net restructuring savings and a reduction in integration costs related to NFP. Risk Capital operating expenses increased $~~136~~146 million, or 78%, to $21.09 billion and Human Capital operating expenses ~~increased~~decreased $~~139~~24 million, or 132%, to $1.21 billion compared to the prior year period. For the first ~~six~~nine months of 2025, Operating expenses increased $~~855~~938 million, or 1511%, to $69.67 billion compared to the prior year period due primarily to the inclusion of NFP’s ongoing expenses, an increase in intangible asset amortization associated with the NFP acquisition and other acquisitions completed in the year, an increase in expense associated with 56% organic revenue growth and investments in long-term growth, partially offset by $110 million of net restructuring savings and transaction costs incurred in the prior year period ~~and $75 million of net restructuring savings~~. Risk Capital operating expenses increased $~~340~~486 million, or 9%, to $45.09 billion and Human Capital operating expenses increased $~~565~~541 million, or 3219%, to $2.3.5 billion compared to the prior year period.

•Operating margin increased to 20.74% from 1716.47% in the prior year period, driven by organic revenue growth of 67% and $35 million of net restructuring savings, partially offset by ~~the addition of NFP and~~ an increase in operating expenses as previously described. Risk Capital operating margin ~~increased~~decreased to 3023.12% from 2923.68% and Human Capital operating margin increased to 922.15% from 814.08% compared to the prior year period. For the first ~~six~~nine months of 2025, Operating margin ~~decreased~~increased to 2624.13% from 2723.18% in the prior year period, driven primarily by ~~the~~organic ~~addition~~revenue growth of ~~NFP~~6% and an$110 million ~~increase~~of innet ~~operating~~restructuring ~~expenses as previously described~~savings, partially offset by ~~organic~~the ~~revenue~~inclusion ~~growth~~ of 5%ongoing operating expenses from NFP and ~~$75 million~~an ofincrease ~~net~~in ~~restructuring~~operating ~~savings~~expenses related to organic growth as previously described. Risk Capital operating margin decreased to 3430.08% from 3531.07% and Human Capital operating margin ~~decreased~~increased to 1819.38% from 2118.49% compared to the prior year period.

•Due to the factors set forth above, Net income increased $56115 million, or 1032%, to $~~594~~470 million compared to the prior year period. For the first ~~six~~nine months of 2025, Net income ~~decreased~~increased $5560 million, or 3%, to $12.60 billion compared to the prior year period.

•Diluted earnings per share was $2.6611 compared to $21.4657 per share for the prior year period. For the first ~~six~~nine months of 2025, Diluted earnings per share was $79.1021 compared to $79.7220 per share for the prior year period.

•Cash flows provided by operating activities was $~~936~~2.1 ~~million~~billion for the first ~~six~~nine months of 2025, an increase of $~~114~~249 million, or 14%, from $~~822~~1.8 ~~million~~billion in the prior year period, primarily due to strong adjusted operating income growth and ~~days~~lower ~~sales~~NFP-related ~~outstanding~~transaction ~~improvements~~costs, partially offset by higher payments related to incentive compensation, interest, and restructuring.

We focus on four key metrics that are not presented in accordance with U.S. GAAP that we communicate to shareholders: organic revenue growth, adjusted operating margin, adjusted diluted earnings per share, and free cash flow. These non-GAAP metrics should be viewed in addition to, not instead of, our Condensed Consolidated Financial Statements. The following is our measure of performance against these four metrics for the ~~second~~third quarter of 2025:

•Organic revenue growth, a non-GAAP measure defined under the caption “Review of Consolidated Results — Organic Revenue Growth,” was 67% for the ~~second~~third quarter of 2025 and 56% for the first ~~six~~nine months of 2025, driven by net new business and ongoing strong retention.

•Adjusted operating margin, a non-GAAP measure defined under the caption “Review of Consolidated Results — Adjusted Operating Margin,” was 2826.23% for the ~~second~~third quarter of 2025 compared to 2724.46% in the prior year period. The increase in adjusted operating margin primarily reflects 67% organic revenue growth and $35 million of net restructuring savings, partially offset by ~~the addition of NFP and~~ increased operating expenses. Risk Capital adjusted operating margin ~~increased~~decreased to 3426.12% compared to 3327.65% in the prior year period. Human Capital adjusted operating margin increased to 1930.15% compared to 1825.72% in the prior year period. For the first ~~six~~nine months of 2025, adjusted operating margin was 3331.63% compared to 3330.8% for the prior year period. The ~~decrease~~increase primarily reflects ~~the addition of NFP and increased expenses, partially offset by 5~~6% organic revenue growth and $75110 million of net restructuring savings. Risk Capital adjusted operating margin ~~remained~~decreased ~~flat~~to at34.4% 37compared to 34.98% in ~~both~~the ~~periods~~prior year period. Human Capital adjusted operating margin increased to 2728.98% compared to 2726.56% in the prior year period.

•Adjusted diluted earnings per share, a non-GAAP measure defined under the caption “Review of Consolidated Results — Adjusted Diluted Earnings per Share,” was $3.4905 per share for the ~~second~~third quarter of 2025, compared to $2.9372 per share for the prior year period. For the first ~~six~~nine months of 2025, adjusted diluted earnings per share was 9$12.1722 per share, compared to $811.5016 per share for the prior year period.

•Free cash flow, a non-GAAP measure defined under the caption “Review of Consolidated Results — Free Cash Flow,” was $~~816~~1.9 ~~million~~billion in the first ~~six~~nine months of 2025, an increase of $95223 million, or 13%, from $~~721~~1.7 ~~million~~billion in the prior year period, reflecting a $~~114~~249 million increase in Cash flows from operations, primarily driven by strong adjusted operating income growth and ~~improvements~~lower inNFP-related ~~days~~transaction ~~sales outstanding~~costs, partially offset by higher payments related to incentive compensation, interest, and restructuring, and a $1926 million increase in capital expenditures.

The current macroeconomic and geopolitical environment is subject to a number of uncertainties, including geopolitical conflicts, tariffs or changes in trade policies, capital markets volatility, and inflation. These and other factors have contributed and may continue to contribute to slower or negative economic growth and may create a challenging business environment for our clients. While we remain confident in the resilience and strength of our business and financial model, due to the global nature of our business, the current macroeconomic and geopolitical environment could negatively impact our financial condition and results of operations. For more information about these risks, please see “Part I, Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024.

Management of corporate sustainability risks – including those related to ESG matters – is an increasingly important priority for our clients. At Aon, helping clients manage risk - including those relating to corporate sustainability and ESG - is at the core of what we do. We offer a wide range of risk assessment, consulting, and advisory solutions, many of which are significant parts of our core business offerings, designed to address and manage corporate sustainability and ESG issues for clients, and to enable our clients to create more sustainable value.

REVIEW OF CONSOLIDATED RESULTS

Summary of Results

Our consolidated results (unaudited) are as follows (in millions):

Three Months Ended June 30,

Six Months Ended June 30,

Three Months Ended September 30,

Nine Months Ended September 30,

2025

2024

2025

2024

Revenue

Total revenue

43,~~155~~997

3,~~760~~721

812,~~884~~881

711,~~830~~551

Expenses

Compensation and benefits

2,~~360~~259

2,~~130~~150

46,~~609~~868

46,~~013~~163

Information technology

~~136~~140

~~132~~141

~~272~~412

~~256~~397

Premises

8288

~~167~~252

~~153~~241

Depreciation of fixed assets

4547

93140

89136

Amortization and impairment of intangible assets

~~201~~193

~~128~~174

~~400~~593

~~144~~318

Other general expense

~~373~~425

~~455~~429

~~819~~1,244

~~803~~1,232

Accelerating Aon United Program expenses

9432

~~132~~69

~~204~~236

~~251~~320

Total operating expenses

3,~~296~~181

3,~~104~~098

69,~~564~~745

58,~~709~~807

Operating income

~~859~~816

~~656~~623

23,~~320~~136

2,~~121~~744

Interest income

—

314

5963

Interest expense

(~~212~~206)

(~~225~~213)

(~~418~~624)

(~~369~~582)

Other income (expense)

56(13)

~~236~~35

4633

~~311~~346

Income before income taxes

~~703~~597

~~698~~449

12,~~953~~550

2,~~122~~571

Income tax expense

~~109~~127

~~160~~94

~~377~~504

~~491~~585

Net income

~~594~~470

~~538~~355

12,~~576~~046

1,~~631~~986

Less: Net income attributable to redeemable and nonredeemable noncontrolling interests

1512

1412

3244

3648

Net income attributable to Aon shareholders

~~579~~458

~~524~~343

12,~~544~~002

1,~~595~~938

Diluted net income per share attributable to Aon shareholders

2.6611

21.4657

79.1021

79.7220

Weighted average ordinary shares outstanding - diluted

~~217~~216.37

~~213~~218.34

217.63

~~206~~210.76

Our segment results (unaudited) are as follows (in millions):

	Three Months Ended June 30,
	Three Months Ended September 30,
	Risk Capital						Human Capital						Corporate/Eliminations (1)				Total Consolidated
	2025			2024			2025			2024			2025		2024		2025			2024
Revenue
Total revenue	$	2,~~866~~525		$	2,~~650~~355		$	1,~~291~~475		$	1,~~125~~369		$	(23)	$	(153)	$	43,~~155~~997		$	3,~~760~~721
Expenses
Compensation and benefits	1,~~541~~455			1,~~390~~368			~~796~~776			~~710~~740			2328		3042		2,~~360~~259			2,~~130~~150
Information technology	8894			93			4544			3947			32		—1		~~136~~140			~~132~~141
Premises	5456			5457			3028			2831			1		—		85			8288
Other expenses (2)	~~319~~335			~~329~~276			~~303~~295			~~258~~349			9367		~~173~~94		~~715~~697			~~760~~719
Total operating expenses	21,~~002~~940			1,~~866~~794			1,~~174~~143			1,~~035~~167			~~120~~98		~~203~~137		3,~~296~~181			3,~~104~~098
Operating income	$	~~864~~585		$	~~784~~561		$	~~117~~332		$	90202		$	(~~122~~101)	$	(~~218~~140)	$	~~859~~816		$	~~656~~623
Operating margin	3023.12		%	2923.68		%	922.15		%	814.08		%					20.74		%	1716.47		%

	Six Months Ended June 30,
	Nine Months Ended September 30,
	Risk Capital						Human Capital						Corporate/Eliminations (1)				Total Consolidated
	2025			2024			2025			2024			2025		2024		2025			2024
Revenue
Total revenue	$	68,~~057~~582		$	57,~~625~~980		$	24,~~836~~311		$	23,~~228~~597		$	(912)	$	(2326)	$	812,~~884~~881		$	711,~~830~~551
Expenses
Compensation and benefits	34,~~002~~457			24,~~744~~112			12,~~570~~346			1,~~237~~977			3765		3274		46,~~609~~868			46,~~013~~163
Information technology	~~178~~272			~~182~~275			90134			74121			46		—1		~~272~~412			~~256~~397
Premises	~~106~~162			~~104~~161			5987			4980			23		—		~~167~~252			~~153~~241
Other expenses (2)	~~710~~1,045			~~626~~902			~~597~~892			~~391~~740			~~209~~276		~~270~~364		12,~~516~~213			12,~~287~~006
Total operating expenses	35,~~996~~936			35,~~656~~450			23,~~316~~459			12,~~751~~918			~~252~~350		~~302~~439		69,~~564~~745			58,~~709~~807
Operating income	$	2,~~061~~646		$	12,~~969~~530		$	~~520~~852		$	~~477~~679		$	(~~261~~362)	$	(~~325~~465)	$	23,~~320~~136		$	2,~~121~~744
Operating margin	3430.08		%	3531.07		%	1819.38		%	2118.49		%					2624.13		%	2723.18		%

(1)Corporate expenses/eliminations include governance costs, post-retirement benefits, and other costs that are not directly attributable to a specific segment.

(2)Includes expenses related to Depreciation of fixed assets, Amortization and impairment of intangible assets, Accelerating Aon United Program expenses, and Other general expenses.

Revenue

Total revenue increased $~~395~~276 million, or 117%, to $4.20 billion in the ~~second~~third quarter of 2025, compared to the prior year period. The increase reflects 67% organic revenue growth, ~~the~~and ~~contribution~~a 1% favorable impact from ~~NFP~~foreign currency translation, ~~and~~partially offset by a 1% ~~favorable~~unfavorable impact from ~~foreign~~acquisitions, ~~currency~~divestitures ~~translation~~and other items. Risk Capital revenue increased $~~216~~170 million, or 87%, to $2.95 billion and Human Capital revenue increased $~~166~~106 million, or 158%, to $1.35 billion in the ~~second~~third quarter of 2025 compared to the prior year period. For the first ~~six~~nine months of 2025, ~~Revenue~~Total revenue increased $1.13 billion, or 1312%, to $812.9 billion compared to the prior year period. The increase reflects the contribution from NFP, 5and 6% organic revenue growth~~, and a 1% unfavorable impact from foreign currency translation~~. Risk Capital revenue increased $~~432~~602 million, or 8%, to $68.16 billion and Human Capital revenue increased $~~608~~714 million, or 2720%, to $24.83 billion for the first ~~six~~nine months of 2025 compared to the prior year period.

Risk Capital

Commercial Risk Solutions revenue increased $~~163~~136 million, or 87%, to $2.20 billion in the ~~second~~third quarter of 2025, compared to $21.09 billion in the ~~second~~third quarter of 2024. Organic revenue growth was 67% in the ~~second~~third quarter of 2025, reflecting strong growth ~~across~~in ~~all~~North ~~major~~America ~~geographies~~and EMEA driven by net new business and ongoing strong retention. Performance was highlighted by strong growth ~~globally~~ in core P&C, including double-digit growth in the U.S. and strength in the middle market, as well as double-digit growth in both M&A services ~~relative~~and ~~to the prior year~~construction. Market impact was modestly positive. For the first ~~six~~nine months of 2025, revenue increased $~~357~~493 million, or 9%, to $46.2 billion, compared to $35.87 billion in the first ~~six~~nine months of 2024. Organic revenue growth was 56% in the first ~~six~~nine months of 2025, reflecting growth across all major geographies driven by net new business and ongoing strong retention. Performance was highlighted by strong growth globally in core P&C. Results also reflect a modest tailwind from M&A services in the first ~~six~~nine months of 2025 relative to the prior year period. Market impact was modestly positive ~~in the first half of the year~~.

Reinsurance Solutions revenue increased $5334 million, or 87%, to $~~688~~537 million in the ~~second~~third quarter of 2025, compared to $~~635~~503 million in the ~~second~~third quarter of 2024. Organic revenue growth was 68% in the ~~second~~third quarter of 2025, reflecting ~~double-digit increases in insurance-linked securities and facultative placements. Results also reflect~~ growth in treaty placements, driven by net new business and ~~ongoing~~ strong retention, partially offset by a modest unfavorable net market impact, and double-digit increases in both facultative placements and our Strategy and Technology Group. Insurance-linked securities had significant growth, though its overall contribution to growth was modest. For the first ~~six~~nine months of 2025, revenue increased $75109 million, or 45%, to $12.94 billion, compared to $12.83 billion in the first ~~six~~nine months of 2024. Organic revenue growth was 45% in the first ~~six~~nine months of 2025, reflecting growth in treaty, driven by net new business and ongoing strong retention., ~~Results~~and ~~also reflect~~ a double-digit increase in facultative placements. ~~and insurance~~Insurance-linked securities. ~~Market~~had ~~impact~~significant ~~had~~growth, athough ~~modest~~its ~~unfavorable~~overall ~~impact~~contribution into ~~the~~growth ~~first~~is ~~half~~modest. ofMarket ~~the~~impact ~~year~~was modestly unfavorable.

Human Capital

Health Solutions revenue increased $~~110~~65 million, or 177%, to $~~772~~935 million in the ~~second~~third quarter of 2025, compared to $~~662~~870 million in the ~~second~~third quarter of 2024. Organic revenue growth was 6% in the ~~second~~third quarter of 2025, reflecting strength in talent analytics and core health and benefits, driven by net new business, ongoing strong retention, and ~~a modestly~~ positive market impact. ~~The core performance was highlighted by double-digit growth internationally. Results also reflect strength in executive benefits and pharmacy benefits in NFP.~~ For the first ~~six~~nine months of 2025, revenue increased $~~403~~468 million, or 2921%, to $12.87 billion, compared to $12.43 billion in the first ~~six~~nine ~~months of 2024. Organic revenue growth was 6% in the first six months of 2025, reflecting~~

months of 2024. Organic revenue growth was 6% in the first nine months of 2025, reflecting strength globally in core health and benefits, driven by net new business, ongoing strong retention, and a modestly positive market impact. Strength in the core was partially offset by lower revenue in Consumer Benefits Solutions in the first ~~six~~nine months of 2025. Talent revenue was ~~lower~~higher in the first ~~half~~nine months of ~~the~~2025 ~~year~~driven asby strength in ~~advisory was offset by a decline in~~ analytics ~~due~~as towell aas ~~change~~ in ~~the timing of survey data delivery~~advisory.

Wealth Solutions revenue increased $5641 million, or 128%, to $~~519~~540 million in the ~~second~~third quarter of 2025, compared to $~~463~~499 million in the ~~second~~third quarter of 2024. Organic revenue growth was 35% in the ~~second~~third quarter of 2025, reflecting growth in Retirement driven by advisory work related to the ongoing impact of regulatory change. Inand strong growth in Investments, ~~results~~driven ~~reflect~~by strength in NFP, ~~driven~~as bya result of net asset inflows and market performance. For the first ~~six~~nine months of 2025, revenue increased $~~205~~246 million, or 2518%, to $1.06 billion, compared to $~~833~~1.3 ~~million~~billion in the first ~~six~~nine months of 2024. Organic revenue growth was 65% in the first ~~six~~nine months of 2025, reflecting strength in ~~Investments,~~Retirement ~~highlighted by double-digit revenue growth in NFP, driven by net asset inflows~~ and ~~market performance~~Investments. Growth in Retirement ~~in the first half of the year~~ was driven by continued demand for advisory work related to the ongoing impact of regulatory changes. ~~and~~Growth ~~pension~~in deInvestments, including double-~~risking~~digit revenue growth in NFP, was driven by net asset inflows and market performance.

Compensation and Benefits

Compensation and benefits expense increased $~~230~~109 million, or 115%, in the ~~second~~third quarter of 2025 compared to the prior year period due primarily to the ~~inclusion~~expense ofassociated ~~operating~~with ~~expenses~~7% ~~from~~organic ~~NFP~~revenue growth and ~~expense~~the ~~associated~~unfavorable ~~with~~impact 6%of ~~organic~~foreign ~~revenue~~currency ~~growth~~translation, partially offset by savings from Accelerating Aon United restructuring actions. For the first ~~six~~nine months of 2025, compensation and benefits increased $~~596~~705 million, or 1511%, compared to the first ~~six~~nine months of 2024. The increase was primarily driven by the inclusion of operating expenses from NFP and expense associated with 56% organic revenue growth, partially offset by savings from Accelerating Aon United restructuring actions.

Information Technology

Information technology, which represents costs associated with supporting and maintaining our infrastructure, ~~increased~~decreased $41 million, or 31%, in the ~~second~~third quarter of 2025 compared to the prior year period ~~due primarily to the inclusion of ongoing operating expenses from NFP~~. For the first ~~six~~nine months of 2025, information technology expenses increased $1615 million, or 64%, compared to the first ~~six~~nine months of 2024. The increase was due primarily to the inclusion of ongoing operating expenses from NFP, partially offset by savings from Accelerating Aon United restructuring actions.

Premises

Premises, which represents the cost of occupying offices in various locations throughout the world, ~~increased~~decreased $3 million, or 43%, in the ~~second~~third quarter of 2025 compared to the prior year period, due primarily to ~~the~~ongoing ~~inclusion~~efforts ofto ~~ongoing~~optimize ~~operating~~our ~~expenses~~real estate footprint and savings from ~~NFP~~Accelerating Aon United restructuring actions. For the first ~~six~~nine months of 2025, premises increased $1411 million, or 95%, compared to the first ~~six~~nine months of 2024. The increase was due primarily to the inclusion of ongoing operating expenses from NFP, partially offset by savings from Accelerating Aon United restructuring actions.

Depreciation of Fixed Assets

Depreciation of fixed assets primarily relates to software, leasehold improvements, furniture, fixtures, and equipment, computer equipment, buildings, and vehicles. Depreciation of fixed assets ~~increased~~was $2flat ~~million, or 4%,~~ in the ~~second~~third quarter of 2025 compared to the prior year period. For the first ~~six~~nine months of 2025, depreciation of fixed assets increased $4 million, or 43%, compared to the first ~~six~~nine months of 2024.

Amortization and Impairment of Intangible Assets

Amortization and impairment of intangibles primarily relates to finite-lived customer-related and contract-based, technology, and tradename assets. Amortization and impairment of intangible assets increased $7319 million to $~~201~~193 million in the ~~second~~third quarter of 2025 compared to the prior year period due primarily to an increase in intangible assets related to ~~the~~acquisitions ~~acquisition~~completed ofduring ~~NFP~~the year. For the first ~~six~~nine months of 2025, amortization and impairment of intangible assets increased $~~256~~275 million to $~~400~~593 million, compared to the first ~~six~~nine months of 2024. The increase was due primarily to an increase in intangible assets related to the acquisition of NFP. as well as other acquisitions completed during the year.

Other General Expense

Other general expenses decreased $824 million, or 181%, in the ~~second~~third quarter of 2025 due primarily to alower ~~decrease in~~ transaction and integration-related costs and the favorable impact of legal settlements and recoveries, partially offset by an increase in expense associated with 7% organic revenue growth. For the first ~~six~~nine months of 2025, other general expenses increased $1612 million, or 21%, compared to the first ~~six~~nine months of 2024. The increase was due primarily to the inclusion of operating expenses from NFP and integration costs, partially offset by transaction costs incurred in the prior year period.

Accelerating Aon United Program Expenses

Accelerating Aon United Program expenses decreased $3837 million in the ~~second~~third quarter of 2025 and decreased $4784 million in the first ~~six~~nine months of 2025, each compared to the prior year period due to lower costs related to workforce optimization ~~and asset impairments, partially offset by higher costs related to technology and other costs~~.

Total Operating Expenses and Operating Income

Total operating expenses increased $~~192~~83 million, or 63%, to $3.32 billion in the ~~second~~third quarter of 2025 due primarily to ~~the inclusion of NFP’s ongoing operating expenses,~~ an increase in ~~intangible asset amortization associated with the NFP acquisition, and an increase in~~ expense associated with 67% organic revenue growth and ~~investments~~an inunfavorable ~~long-term~~impact ~~growth~~from foreign currency translation, partially offset by ~~transaction costs incurred in the prior year period,~~ lower Accelerating Aon United program ~~expense~~expenses and $35 million of net restructuring savings and a reduction in integration costs related to NFP. Due to the factors set forth above, Total operating income increased $~~203~~193 million to $~~859~~816 million in the ~~second~~third quarter of 2025. For the first ~~six~~nine months of 2025, Total operating expenses increased $~~855~~938 million, or 1511%, to $69.67 billion due primarily to ~~intangible~~an ~~asset~~increase ~~amortization~~in expense associated with ~~the NFP acquisition, an increase in 5~~6% organic revenue growth, ~~and~~ investments in long-term growth, and intangible asset amortization associated with the NFP acquisition, partially offset by $75110 million of net restructuring savings. Due to the factors set forth above, Total operating income increased $~~199~~392 million to $2.3.1 billion for the first ~~six~~nine months of 2025.

Risk Capital Total operating expenses increased $~~136~~146 million, or 78%, to $21.09 billion in the ~~second~~third quarter of 2025. The increase was primarily due to an increase in Compensation and benefits. The increase in Compensation and benefits is due to ~~the inclusion of operating expenses from NFP and~~ an increase in expense associated with 67% and 8% organic revenue growth in ~~both~~ Commercial Risk Solutions and Reinsurance Solutions, respectively, partially offset by restructuring savings. Due to the factors set forth above, Risk Capital Operating income increased $8024 million, or 104%, to $~~864~~585 million in the ~~second~~third quarter of 2025. For the first ~~six~~nine months of 2025, Risk Capital Total operating expenses increased $~~340~~486 million, or 9%, to $45.09 billion. The increase was primarily due to an increase in Compensation and benefits and in Other expenses. The increase in Compensation and benefits is due to the inclusion of operating expenses from NFP and an increase in expense associated with 56% and 45% organic revenue growth in Commercial Risk Solutions and Reinsurance Solutions, respectively, partially offset by restructuring savings. The increase in Other expenses is primarily due to increased Amortization and impairment from the NFP Transaction. Due to the factors set forth above, Risk Capital Operating income increased $92116 million, or 5%, to $2.16 billion for the first ~~six~~nine months of 2025.

Human Capital Total operating expenses ~~increased~~decreased $~~139~~24 million, or 132%, to $1.21 billion in the ~~second~~third quarter of 2025. The ~~increase~~decrease was primarily due to ana ~~increase~~decrease in ~~both Compensation and benefits and~~ Other expenses. The ~~increase~~decrease in Compensation and benefits is due to the inclusion of operating expenses from NFP and an increase in expense associated with 6% and 3% organic revenue growth in Health Solutions and Wealth Solutions, respectively. The increase in Other expenses is primarily due to ~~increased~~lower ~~Amortization~~transaction and ~~impairment~~integration-related ~~of intangible assets acquired from the NFP Transaction~~costs. Due to the factors set forth above, Human Capital Operating income increased $27130 million, or 3064%, to $~~117~~332 million in the ~~second~~third quarter of 2025. For the first ~~six~~nine months of 2025, Human Capital Total operating expenses increased $~~565~~541 million, or 3219%, to $2.3.5 billion. The increase was primarily due to an increase in both Compensation and benefits and Other expenses. The increase in in Compensation and benefits is due to the inclusion of operating expenses from NFP and an increase in expense associated with 6% and 5% organic revenue growth in ~~both~~ Health Solutions and Wealth Solutions, respectively, partially offset by restructuring savings. The increase in Other expenses is primarily due to increased Amortization and impairment of intangible assets acquired from the NFP Transaction. Due to the factors set forth above, Human Capital Operating income increased $43173 million, or 925%, to $~~520~~852 million for the first ~~six~~nine months of 2025.

Interest Income

Interest income represents income earned, net of expense, on operating cash balances, including our multi-currency cash pool, and other income-producing investments. Interest income does not include interest earned on funds held on behalf of clients. ~~During~~ ~~the~~If ~~second~~interest ~~quarter~~expense ofon ~~2025,~~ these assets exceeds interest income ~~decreased~~for ~~$31~~the ~~million~~period, tothe annet ~~insignificant~~ amount ~~and~~is reported as interest expense for both the ~~first~~quarterly ~~six~~and ~~months~~year-to-date periods. During the third quarter of 2025, there was no Interest income, ~~decreased~~reflecting $54 3 million toof $5net ~~million~~interest ~~compared~~expense tothat ~~the~~was ~~prior~~presented ~~year~~as ~~period,~~Interest ~~due~~expense. ~~primarily~~There towas ~~interest~~$4 ~~earned~~million of Interest income in the ~~prior~~third ~~year~~quarter ~~period~~of on2024. For the ~~investment~~first ofnine ~~$5 billion~~months of ~~term~~2025, ~~debt~~Interest ~~proceeds~~income ~~which~~was ~~were~~$5 ~~used~~million compared to ~~fund~~$63 million the ~~purchase~~prior ofyear ~~NFP~~period.

Interest Expense

Interest expense, which represents the cost of our debt obligations and net interest expense on operating cash balances and other income-producing investments, decreased $137 million to $~~212~~206 million during the ~~second~~third quarter of 2025 compared to the prior year period, reflecting lower total debt, and $3 million of net interest expense on operating cash balances and other income-producing investments. For the first ~~six~~nine months of 2025, Interest expense increased $4942 million to $~~418~~624 million compared to the prior year period. The increase was driven primarily by an increase in average total debt, primarily to fund the purchase of NFP.

Other Income (Expense)

Other income was $56 million for the second quarter of 2025 compared to Other income of $236 million for the second quarter of 2024. The decrease was primarily due to gains related to the sale of a business in the prior year period, partially offset

~~by deferred consideration from the 2017 sale of our outsourcing business. For the first six months of 2025,~~ Other ~~income~~Income ~~was $46 million compared to Other income of $311 million for the first six months of 2024. The decrease was primarily related to gains related to the sale of a business in the prior year period.~~(Expense)

Other expense was $13 million for the third quarter of 2025 compared to Other income of $35 million for the third quarter of 2024. The decrease was due to gains related to the sale of businesses in the prior year period and and an increase in non-cash pension expense, partially offset by the favorable impact of exchange rates on the remeasurement of assets and liabilities in non-functional currencies . For the first nine months of 2025, Other income was $33 million compared to Other income of $346 million for the first nine months of 2024. The decrease was primarily related to gains related to the sale of a businesses in the prior year period.

Income before Income Taxes

Income before income taxes for the ~~second~~third quarter of 2025 was $~~703~~597 million, a 133% increase from $~~698~~449 million ~~compared~~in to the prior year period. For the first ~~six~~nine months of 2025, Income before income taxes was $2.06 billion, ana 81% decrease ~~from~~compared ~~$2.1~~to ~~billion for~~ the first ~~six~~nine months of 2024.

Income Taxes

For the three and ~~six~~nine months ended ~~June~~September 30, 2024, the quarter-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items. The year-to-date tax rate was primarily driven by the geographical distribution of income and certain discrete items, including the favorable impacts of share-based payments offset by the unfavorable impact of other discrete items.

Ireland, the U.K., Singapore, and many E.U. member states, among others, have enacted legislation to implement the global minimum tax that is generally consistent with the OECD’s proposed Pillar Two tax regime. There remains significant uncertainty, however, as to how Pillar Two will ultimately apply to the Company. The OECD has issued numerous guidance documents attempting to change how Pillar Two Tax operates, subject to enactment by each implementing country, and the OECD may issue additional guidance in the future. The Company is actively monitoring developments in this area and continues to evaluate the guidance and the potential impacts this may have on its global effective tax rate, results of operations, cash flows, and financial condition in 2025 and future periods.

The Company iscontinues ~~analyzing~~to analyze the impacts of the One Big Beautiful Bill Act but does not anticipate a material impact on its global effective tax rate, results of operations, cash flows or financial condition in 2025 and future periods.

Net Income Attributable to Aon Shareholders

Net income attributable to Aon shareholders for the ~~second~~third quarter of 2025 increased to $~~579~~458 million, or $2.6611 per diluted share, from $~~524~~343 million, or $21.4657 per diluted share, in the prior year period. Net income attributable to Aon shareholders for the first ~~six~~nine months of 2025 ~~decreased~~increased to $12.50 billion, or $79.1021 per diluted share, from $1.69 billion, or $79.7220 per diluted share, in the prior year period.

Non-GAAP Metrics

In our discussion of consolidated results, we sometimes refer to certain non-GAAP supplemental information derived from consolidated financial information specifically related to organic revenue growth, adjusted operating margin, adjusted diluted earnings per share, adjusted net income attributable to Aon shareholders, adjusted net income per share, adjusted other income (expense), adjusted effective tax rate, free cash flow, and the impact of foreign exchange rate fluctuations on operating results. Management believes that these measures are important to make meaningful period-to-period comparisons and that this supplemental information is helpful to investors. Management also uses these measures to assess operating performance and performance for compensation. This non-GAAP supplemental information should be viewed in addition to, not instead of, our Condensed Consolidated Financial Statements.

Organic Revenue Growth

We use supplemental information related to Organic revenue growth to help us and our investors evaluate business growth from ongoing operations. Organic revenue growth is a non-GAAP measure that includes the impact of certain intercompany activity and excludes the impact of changes in foreign exchange rates, fiduciary investment income, acquisitions (provided that organic revenue growth includes organic growth of an acquired business as calculated assuming that the acquired business was part of the combined company for the same proportion of the relevant prior year period), divestitures (including held for sale disposal groups, if any), transfers between revenue lines, and gains or losses on derivatives accounted for as hedges. This supplemental information related to organic revenue growth represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, Total revenue in our Condensed Consolidated Financial Statements. Industry peers provide similar supplemental information about their revenue performance, although they may not make identical

activity and excludes the impact of changes in foreign exchange rates, fiduciary investment income, acquisitions (provided that organic revenue growth includes organic growth of an acquired business as calculated assuming that the acquired business was part of the combined company for the same proportion of the relevant prior year period), divestitures (including held for sale disposal groups, which are adjusted from Organic revenue growth upon classification as held for sale, if any), transfers between revenue lines, and gains or losses on derivatives accounted for as hedges. This supplemental information related to organic revenue growth represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, Total revenue in our Condensed Consolidated Financial Statements. Industry peers provide similar supplemental information about their revenue performance, although they may not make identical adjustments. A reconciliation of this non-GAAP measure to the reported Total revenue is as follows (in millions, except percentages):

	Three Months Ended June 30,
	Three Months Ended September 30,
	2025		2024		% Change		Less: Currency Impact (1)		Less: Fiduciary Investment Income (2)		Less: Acquisitions, Divestitures & Other		Organic Revenue Growth (3)
Risk Capital Revenue:
Commercial Risk Solutions	$	21,~~178~~988	$	21,~~015~~852	87	%	1	%	—	%	(1)	%	67	%
Reinsurance Solutions	~~688~~537		~~635~~503		87		1		—(1)		(1)		68
Human Capital Revenue:
Health Solutions	~~772~~935		~~662~~870		177		—1		—		11—		6
Wealth Solutions	~~519~~540		~~463~~499		128		2		—		71		35
Eliminations	(23)		(153)		N/A		N/A		N/A		N/A		N/A
Total revenue	$	43,~~155~~997	$	3,~~760~~721	117	%	1	%	—	%	4(1)	%	67	%

	Six Months Ended June 30,
	Nine Months Ended September 30,
	2025		2024		% Change		Less: Currency Impact (1)		Less: Fiduciary Investment Income (2)		Less: Acquisitions, Divestitures & Other		Organic Revenue Growth (3)
Risk Capital Revenue:
Commercial Risk Solutions	$	46,~~180~~168	$	35,~~823~~675	9	%	~~(1)~~—	%	—	%	53	%	56	%
Reinsurance Solutions	12,~~877~~414		12,~~802~~305		45		—		—(1)		—1		45
Human Capital Revenue:
Health Solutions	12,~~798~~733		12,~~395~~265		2921		~~(1)~~—		—		2415		6
Wealth Solutions	1,~~038~~578		~~833~~1,332		2518		1		—		1812		65
Eliminations	(912)		(2326)		N/A		N/A		N/A		N/A		N/A
Total revenue	$	812,~~884~~881	$	711,~~830~~551	1312	%	~~(1)~~—	%	—	%	96	%	56	%

(1)Currency impact represents the effect on prior year period results if they were translated at current period foreign exchange rates.

(2)Fiduciary investment income for the three months ended ~~June~~September 30, 2025 and 2024 was $6675 million and $7585 million, respectively. Fiduciary investment income for the ~~six~~nine months ended ~~June~~September 30, 2025 and 2024 was $~~133~~208 million and $~~154~~239 million, respectively.

(3)Organic revenue growth includes the impact of certain intercompany activity and excludes the impact of changes in foreign exchange rates, fiduciary investment income, acquisitions (provided that Organic revenue growth includes Organic growth of an acquired business as calculated assuming that the acquired business was part of the combined company for the same proportion of the relevant prior year period), divestitures ~~(including~~and held for sale disposal groups (including a significant majority of NFP’s Wealth business, ifwhich ~~any~~is adjusted from Organic revenue growth upon classification as held for sale in September), transfers between revenue lines, and gains or losses on derivatives accounted for as hedges.

Adjusted Operating Margin

We use adjusted operating margin as a non-GAAP measure of our core operating performance of the Company. Adjusted operating margin excludes the impact of certain items, as listed below, because management does not believe these expenses are the best indicators of our core operating performance. This supplemental information related to adjusted operating margin represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, Operating margin in our Condensed Consolidated Financial Statements.

A reconciliation of this non-GAAP measure to the reported operating margin is as follows (in millions, except percentages):

	Three Months Ended June 30,
	Three Months Ended September 30,
	Risk Capital						Human Capital						Corporate/Eliminations (1)				Total Consolidated
(millions, except percentages)	2025			2024			2025			2024			2025		2024		2025			2024
Revenue	$	2,~~866~~525		$	2,~~650~~355		$	1,~~291~~475		$	1,~~125~~369		$	(23)	$	(153)	$	43,~~155~~997		$	3,~~760~~721
Operating income	$	~~864~~585		$	~~784~~561		$	~~117~~332		$	90202		$	(~~122~~101)	$	(~~218~~140)	$	~~859~~816		$	~~656~~623
Amortization and impairment of intangible assets	8689			5370			~~115~~104			75104			—		—		~~201~~193			~~128~~174
Change in the fair value of contingent consideration	~~(9)~~10			3			~~(1)~~13			1511			—		—		~~(10)~~23			1814
Accelerating Aon United Program expenses (2)	32(3)			4811			6(1)			123			5636		7255		9432			~~132~~69
Transaction and integration costs (3)(4)	3			3			9			18			15		74		27			95
Legal settlements (3)	(23)			—			—			—			—		—		(23)			—
Adjusted operating income	$	976		$	891		$	246		$	210		$	(51)	$	(72)	$	1,171		$	1,029
Transaction and integration costs (4)(5)	3			3			2			25			5		7		10			35
Operating margin	30.1		%	29.6		%	9.1		%	8.0		%					20.7		%	17.4		%
Adjusted operating income	$	661		$	648		$	450		$	345		$	(60)	$	(78)	$	1,051		$	915
Adjusted operating margin	34.1		%	33.6		%	19.1		%	18.7		%					28.2		%	27.4		%
Operating margin	23.2		%	23.8		%	22.5		%	14.8		%					20.4		%	16.7		%
Adjusted operating margin	26.2		%	27.5		%	30.5		%	25.2		%					26.3		%	24.6		%

	Six Months Ended June 30,
	Nine Months Ended September 30,
	Risk Capital						Human Capital						Corporate/Eliminations (1)				Total Consolidated
(millions, except percentages)	2025			2024			2025			2024			2025		2024		2025			2024
Revenue	$	68,~~057~~582		$	57,~~625~~980		$	24,~~836~~311		$	23,~~228~~597		$	(912)	$	(2326)	$	812,~~884~~881		$	711,~~830~~551
Operating income	$	2,~~061~~646		$	12,~~969~~530		$	~~520~~852		$	~~477~~679		$	(~~261~~362)	$	(~~325~~465)	$	23,~~320~~136		$	2,~~121~~744
Amortization and impairment of intangible assets	~~170~~259			65135			~~230~~334			79183			—		—		~~400~~593			~~144~~318
Change in the fair value of contingent consideration	~~(3)~~7			36			1023			1526			—		—		730			1832
Accelerating Aon United Program expenses (2)	5148			92103			109			2326			~~143~~179		~~136~~191		~~204~~236			~~251~~320
Transaction and integration costs (3)(4)	14			3			21			18			21		89		56			110
Legal settlements (3)	(23)			—			—			—			—		—		(23)			—
Adjusted operating income	$	2,293		$	2,132		$	791		$	612		$	(97)	$	(100)	$	2,987		$	2,644
Transaction and integration costs (4)(5)	17			6			23			43			26		96		66			145
Operating margin	34.0		%	35.0		%	18.3		%	21.4		%					26.1		%	27.1		%
Adjusted operating income	$	2,954		$	2,780		$	1,241		$	957		$	(157)	$	(178)	$	4,038		$	3,559
Adjusted operating margin	37.9		%	37.9		%	27.9		%	27.5		%					33.6		%	33.8		%
Operating margin	30.8		%	31.7		%	19.8		%	18.9		%					24.3		%	23.8		%
Adjusted operating margin	34.4		%	34.8		%	28.8		%	26.6		%					31.3		%	30.8		%

(1)Corporate expenses/eliminations include governance costs, post-retirement benefits, and other costs that are not directly attributable to a specific segment.

(2)Total charges are expected to include technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation and technology costs.

(3)~~Transaction~~In ~~costs~~the ~~include~~fourth ~~advisory,~~quarter ~~legal,~~of ~~accounting~~2023, ~~regulatory,~~Aon ~~and~~recognized ~~other~~a ~~professional~~$197 million orcharge ~~consulting~~in ~~fees~~connection ~~required~~with totransactions ~~complete the NFP Transaction. No transaction costs were recognized~~ for ~~the~~which ~~three~~capital ~~and~~was ~~six~~arranged ~~months~~by ~~ended~~a ~~June~~third 30party, ~~2025~~Vesttoo Ltd., ~~$85 million~~ and ~~$96 million~~in ~~of transaction costs were recognized for~~ the ~~three~~third ~~and~~quarter ~~six~~of ~~months ended June 30~~2025, ~~2024,~~certain ~~respectively.~~legal Ofsettlement ~~these~~expenses ~~amounts, $79 million~~ and ~~$90 million~~recoveries were recognized, ~~respectively,~~resulting in ~~Total~~a ~~operating expenses and~~ $623 million ~~were~~reduction ~~recognized~~of ~~in Other income (~~expense) ~~related~~within to the ~~extinguishment~~Risk ofCapital ~~acquired NFP debt for the three and six months ended June 30, 2024~~segment.

(4)~~The NFP~~ Transaction ~~has and will continue to result in certain non-recurring integration~~ costs ~~associated~~include ~~with colleague severance~~advisory, ~~retention bonus awards~~legal, ~~termination of redundant third-party agreements~~accounting, ~~costs associated with legal entity rationalization~~regulatory, and other professional or consulting fees ~~related~~required to ~~alignment~~complete ofthe ~~management~~NFP ~~processes~~Transaction. ~~and~~No ~~controls,~~transaction ~~as well as~~ costs ~~associated~~were ~~with~~recognized for the ~~assessment~~three ofand ~~NFP~~nine ~~information~~months ~~technology~~ended ~~environment~~September ~~and~~30, ~~security protocols~~2025. ~~Aon~~Less ~~incurred~~than $271 million ~~and $16 million~~ of ~~integration~~transaction costs inwere recognized for the three months ended ~~June~~September 30, ~~2025~~2024. ~~and~~For ~~2024~~the nine months ended September 30, ~~respectively~~2024, ~~and~~ $5690 million of transaction costs were recognized in Total operating expenses and $206 million ofwere ~~integration~~recognized ~~costs~~ in ~~the~~Other ~~six~~income ~~months~~(expense) ~~ended~~related ~~June~~to ~~30,~~the ~~2025~~extinguishment ~~and~~of ~~2024,~~acquired ~~respectively~~NFP debt.

~~Risk~~(5)The ~~Capital~~NFP ~~Adjusted~~Transaction ~~operating~~has ~~income~~and ~~increased~~will ~~$85~~continue ~~million, or 10%,~~ to ~~$976~~result ~~million~~ in ~~the~~certain ~~second~~non-recurring ~~quarter~~integration ofcosts ~~2025.~~associated ~~The~~with ~~increase~~colleague ~~was~~severance, ~~primarily~~retention ~~due~~bonus toawards, ~~organic~~termination ~~revenue growth~~ of 6%redundant inthird-party ~~both~~agreements, ~~Commercial~~costs ~~Risk~~associated ~~Solutions~~with ~~and~~legal ~~Reinsurance~~entity ~~Solutions and the impact of NFP~~rationalization, ~~partially offset by increased expenses~~ and ~~investments~~professional ~~in long-term growth. Human Capital Adjusted operating income increased $36 million,~~ or ~~17%,~~consulting tofees ~~$246~~related ~~million in the second quarter of 2025. The increase was primarily due~~ to ~~organic~~alignment ~~revenue growth~~ of 6%management inprocesses ~~Health~~and ~~Solutions~~controls, ~~and~~as 3%well inas ~~Wealth~~costs ~~Solutions~~associated ~~and~~with the ~~impact~~assessment of NFP, ~~partially~~information ~~offset~~technology byenvironment ~~increased expenses~~ and ~~investments~~security ~~in long-term growth~~protocols. ~~For~~Aon ~~the~~incurred ~~first six months of 2025, Risk Capital Adjusted operating income increased~~ $~~161~~ 10 million, orand ~~8%, to~~ $~~2.3~~35 million ~~billion. The increase was primarily due to organic revenue growth~~ of 5%integration costs in ~~Commercial~~the ~~Risk~~three ~~Solutions~~months ~~and~~ended 4%September in30, ~~Reinsurance~~2025 ~~Solutions~~ and ~~the~~2024, ~~impact of NFP~~respectively, ~~partially offset by increased expenses~~ and ~~investments in long-term growth. Human Capital Adjusted operating income increased~~ $~~179~~ 66 million, orand ~~29%, to~~ $~~791~~ 55 million ~~for the first six months~~ of ~~2025.~~integration ~~The~~costs ~~increase was primarily due to organic revenue growth of 6%~~ in ~~both~~the ~~Health~~nine ~~Solutions~~months ~~and~~ended ~~Wealth~~September ~~Solutions and the impact of NFP~~30, ~~partially~~2025 ~~offset by increased expenses~~ and ~~investments~~2024, ~~in long-term growth~~respectively.

Risk Capital Adjusted operating income increased $13 million, or 2%, to $661 million in the third quarter of 2025. The increase was primarily due to organic revenue growth of 7% in Commercial Risk Solutions and 8% in Reinsurance Solutions, partially offset by increased expenses and investments in long-term growth. Human Capital Adjusted operating income increased $105 million, or 30%, to $450 million in the third quarter of 2025. The increase was primarily due to organic revenue growth of 6% in Health Solutions and 5% in Wealth Solutions and decreased expenses, partially offset by investments in long-term growth. For the first nine months of 2025, Risk Capital Adjusted operating income increased $174 million, or 6%, to $3.0 billion. The increase was primarily due to organic revenue growth of 6% in Commercial Risk Solutions, 5% in Reinsurance Solutions, and the impact of NFP, partially offset by increased expenses and investments in long-term growth. Human Capital Adjusted operating income increased $284 million, or 30%, to $1.2 billion for the first nine months of 2025. The increase was

primarily due to organic revenue growth of 6% in Health Solutions, 5% in Wealth Solutions, and the impact of NFP, partially offset by increased expenses and investments in long-term growth.

Adjusted Diluted Earnings per Share

We use adjusted diluted earnings per share as a non-GAAP measure of our core operating performance. Adjusted diluted earnings per share excludes the impact of certain items, as listed below, because management does not believe these expenses are the best indicators of our core operating performance. This supplemental information related to adjusted diluted earnings per share represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, diluted earnings per share in our Condensed Consolidated Financial Statements.

A reconciliation of this non-GAAP measure to reported diluted earnings per share is as follows (in millions, except per share data and percentages):

	Three Months Ended June 30, 2025
	Three Months Ended September 30, 2025
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	~~859~~816		$	~~312~~235	$	1,~~171~~051
Interest income	—			—		—
Interest expense	(~~212~~206)			—		(~~212~~206)
Other income (expense) (1)	56			(88)		(32)
Other income (expense)	(13)			—		(13)
Income before income taxes	~~703~~597			~~224~~235		~~927~~832
Income tax expense (2)	109			44		153
Income tax expense (1)	127			33		160
Net income	~~594~~470			~~180~~202		~~774~~672
Less: Net income attributable to noncontrolling interests	1512			—		1512
Net income attributable to Aon shareholders	$	~~579~~458		$	~~180~~202	$	~~759~~660
Diluted net income per share attributable to Aon shareholders	$	2.6611		$	0.8394	$	3.4905
Weighted average ordinary shares outstanding - diluted	~~217~~216.37			—		~~217~~216.37
Effective tax rates (2)	15.5		%			16.5		%
Effective tax rates (1)	21.3		%			19.2		%

	Three Months Ended June 30, 2024
	Three Months Ended September 30, 2024
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	~~656~~623		$	~~373~~292	$	~~1,029~~915
Interest income	314			—		314
Interest expense	(~~225~~213)			—		(~~225~~213)
Other income (expense) (3)(4)	236			(251)		(15)
Other income (expense) (2)	35			(2)		33
Income before income taxes	~~698~~449			~~122~~290		~~820~~739
Income tax expense (2)	160			22		182
Income tax expense (1)	94			39		133
Net income	~~538~~355			~~100~~251		~~638~~606
Less: Net income attributable to noncontrolling interests	1412			—		1412
Net income attributable to Aon shareholders	$	~~524~~343		$	~~100~~251	$	~~624~~594
Diluted net income per share attributable to Aon shareholders	$	21.4657		$	01.4715	$	2.9372
Weighted average ordinary shares outstanding - diluted	~~213~~218.34			—		~~213~~218.34
Effective tax rates (2)	22.9		%			22.2		%
Effective tax rates (1)	20.9		%			18.0		%

	Six Months Ended June 30, 2025
	Nine Months Ended September 30, 2025
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	23,~~320~~136		$	~~667~~902	$	24,~~987~~038
Interest income	5			—		5
Interest expense	(~~418~~624)			—		(~~418~~624)
Other income (expense) (1)	46			(108)		(62)
Other income (expense) (2)	33			(108)		(75)
Income before income taxes	12,~~953~~550			~~559~~794		23,~~512~~344
Income tax expense (2)	377			108		485
Income tax expense (1)	504			141		645
Net income	12,~~576~~046			~~451~~653		2,~~027~~699
Less: Net income attributable to noncontrolling interests	3244			—		3244
Net income attributable to Aon shareholders	$	12,~~544~~002		$	~~451~~653	$	12,~~995~~655
Diluted net income per share attributable to Aon shareholders	$	79.1021		$	23.0701	$	912.1722
Weighted average ordinary shares outstanding - diluted	217.63			—		217.63
Effective tax rates (2)	19.3		%			19.3		%
Effective tax rates (1)	19.8		%			19.3		%

	Six Months Ended June 30, 2024
	Nine Months Ended September 30, 2024
	U.S. GAAP			Adjustments		Non-GAAP Adjusted
Operating income	$	2,~~121~~744		$	~~523~~815	$	23,~~644~~559
Interest income	5963			—		5963
Interest expense	(~~369~~582)			—		(~~369~~582)
Other income (expense) (1)(3)(4)	311			(333)		(22)
Other income (expense) (2)(3)(4)	346			(335)		11
Income before income taxes	2,~~122~~571			~~190~~480		23,~~312~~051
Income tax expense (2)	491			28		519
Income tax expense (1)	585			67		652
Net income	1,~~631~~986			~~162~~413		12,~~793~~399
Less: Net income attributable to noncontrolling interests	3648			—		3648
Net income attributable to Aon shareholders	$	1,~~595~~938		$	~~162~~413	$	12,~~757~~351
Diluted net income per share attributable to Aon shareholders	$	79.7220		$	01.7896	$	811.5016
Weighted average ordinary shares outstanding - diluted	~~206~~210.76			—		~~206~~210.76
Effective tax rates (2)	23.1		%			22.4		%
Effective tax rates (1)	22.8		%			21.4		%

(1)~~During~~Adjusted ~~the~~items ~~three~~are ~~and~~generally ~~six~~taxed ~~months~~at ~~ended~~the ~~June~~estimated ~~30,~~annual ~~2025~~effective tax rate, anexcept ~~$88 million~~for ~~and~~the ~~$108 million~~applicable ~~gain~~tax ~~was~~impact ~~recognized,~~associated ~~respectively,~~with ~~compared~~changes toin ~~$82 million~~the ~~recognized~~fair ~~for~~value ~~the~~of ~~six~~contingent ~~months~~consideration, ~~ended~~certain ~~June~~legal 30settlements, ~~2024~~Accelerating Aon United Program expenses, ~~which~~certain ~~was~~transaction ~~all~~and ~~recognized~~integration incosts ~~the~~related ~~first~~to ~~quarter~~the acquisition of ~~2024.~~NFP, ~~These~~certain gains ~~are~~from ~~related~~dispositions, toand deferred consideration from ~~the~~a ~~affiliates~~prior year sale of ~~The~~business, ~~Blackstone~~which ~~Group~~are ~~L.P.~~adjusted ~~and~~at the ~~other~~related ~~designated~~jurisdictional ~~purchasers~~rate. The tax adjustment also excludes interest accruals for income tax reserves related to athe ~~divestiture~~termination ~~completed~~fee payment made in aconnection ~~prior~~with ~~year~~the ~~period.~~Company’s terminated proposed combination with Willis Towers Watson.

(2)Adjusted ~~items~~Other ~~are~~income ~~generally~~(expense) ~~taxed~~excluded atgains ~~the~~related ~~estimated~~to ~~annual~~deferred ~~effective~~consideration ~~tax~~from ~~rate, except for~~ the ~~applicable~~affiliates ~~tax~~of ~~impact~~The ~~associated~~Blackstone ~~with~~Group ~~changes~~L.P. inand the ~~fair~~other ~~value~~designated ofpurchasers ~~contingent~~related ~~consideration,~~to ~~Accelerating~~a ~~Aon~~divestiture ~~United~~completed ~~Program~~in ~~expenses,~~a ~~certain~~prior ~~transaction~~year ~~and~~period. ~~integration~~During ~~costs~~the ~~related~~nine tomonths ~~the~~ended ~~acquisition~~September ~~of NFP~~30, ~~certain gains from dispositions~~2025, ~~and deferred consideration from~~ a ~~prior~~gain ~~year~~of ~~sale~~$108 million ofwas ~~business~~recognized, which ~~are~~was ~~adjusted~~all atrecognized in the ~~related~~first ~~jurisdictional~~six ~~rate.~~months ~~The~~of ~~tax~~2025. ~~adjustment~~During ~~also excludes interest accruals for income tax reserves related to~~ the ~~termination~~three ~~fee~~and ~~payment~~nine ~~made~~months inended ~~connection~~September ~~with~~30, ~~the~~2024, ~~Company’s~~a ~~terminated~~$2 million ~~proposed~~and ~~combination~~$84 million ~~with~~gain ~~Willis~~was ~~Towers~~recognized, ~~Watson~~respectively.

(3)Adjusted Other income (expense) excluded gains from dispositions of $257 million related to the sale of a business for the ~~three~~nine ~~and six~~ months ended ~~June~~September 30, 2024.

(4)Adjusted Other income (expense) excluded approximately $6 million of debt extinguishment charges related to the repayment of NFP debt, which is considered a transaction related cost incurred in the second quarter of 2024.

Free Cash Flow

We use free cash flow, defined as cash flows provided by operations less capital expenditures, as a non-GAAP measure of our core operating performance and cash-generating capabilities of our business operations. This supplemental information related to free cash flow represents a measure not in accordance with U.S. GAAP and should be viewed in addition to, not instead of, Cash provided by operating activities in our Condensed Consolidated Financial Statements. Management believes the supplemental information related to free cash flow is helpful to investors when evaluating our operating performance and liquidity results. The use of this non-GAAP measure does not imply or represent the residual cash flow for discretionary expenditures. A reconciliation of this non-GAAP measure to the reported Cash provided by operating activities is as follows (in millions):

Six Months Ended June 30,

Nine Months Ended September 30,

2025

2024

Cash provided by operating activities

~~936~~2,084

~~822~~1,835

Capital expenditures

(~~120~~189)

(~~101~~163)

Free cash flow

~~816~~1,895

~~721~~1,672

Impact of Foreign Currency Exchange Rate Fluctuations

Because we conduct business in over 120 countries, foreign exchange rate fluctuations may have a significant impact on our business. Foreign exchange rate movements may be significant and may distort true period-to-period comparisons of changes in revenue or pretax income. Therefore, to give financial statement users meaningful information about our operations, we have provided an illustration of the comparable impact of foreign currency exchange rates on our financial results. The methodology used to calculate this comparable impact isolates the impact of the change in currencies between periods by hypothetically translating the prior year quarter’s revenue, expenses, and net income using the current quarter’s foreign currency exchange rates.

Currency fluctuations had noa de minimis impact and an unfavorable impact of $0.1312 on net income per diluted share during the three and ~~six~~nine months ended ~~June~~September 30, 2025, respectively, if prior year period results were translated at current period foreign exchange rates. Currency fluctuations had an unfavorable impact of $0.0502 and an unfavorable impact of $0.0405 on net income per diluted share during the three and ~~six~~nine months ended ~~June~~September 30, 2024, respectively, if 2023 results were translated at 2024 rates.

Currency fluctuations had a favorable impact of $0.0102 and an unfavorable impact of $0.1311 on adjusted diluted earnings per share during the three and ~~six~~nine months ended ~~June~~September 30, 2025, respectively, if prior year period results were translated at current period foreign exchange rates. Currency fluctuations had an unfavorable impact of $0.0602 and an unfavorable impact of $0.0405 on adjusted diluted earnings per share during the three and ~~six~~nine months ended ~~June~~September 30, 2024, respectively, if 2023 results were translated at 2024 rates. These translations are performed for comparative and illustrative purposes only and do not impact the accounting policies or practices for amounts included in our Condensed Consolidated Financial Statements.

LIQUIDITY AND FINANCIAL CONDITION

Liquidity

Executive Summary

We believe that our balance sheet and strong cash flow provide us with adequate liquidity. Our primary sources of liquidity in the near-term include cash flows provided by operations, ~~and~~ available cash reserves, and divestiture proceeds; primary sources of liquidity in the long-term include cash flows provided by operations, debt capacity available under our credit facilities, and capital markets. Our primary uses of liquidity are operating expenses and investments, capital expenditures, acquisitions, share repurchases, pension obligations, shareholder dividends, and Accelerating Aon United Program cash charges. We believe that cash flows from operations, available credit facilities, available cash reserves, and the capital markets will be sufficient to meet our liquidity needs, including principal and interest payments on debt obligations, capital expenditures, pension contributions, and anticipated working capital requirements in the next twelve months and over the long-term.

Cash on our balance sheet includes funds available for general corporate purposes, as well as amounts restricted as to their use. Funds held on behalf of clients in a fiduciary capacity are segregated and shown together with uncollected insurance premiums in Fiduciary assets in our Condensed Consolidated Statements of Financial Position, with a corresponding amount in Fiduciary liabilities.

In our capacity as an insurance broker or agent, we collect premiums from insureds and, after deducting our commission, remit the premiums to the respective insurance underwriters. We also collect claims or refunds from underwriters on behalf of ~~insureds, which are then returned to the insureds. Unremitted insurance premiums and claims are held by us in a fiduciary~~

insureds, which are then returned to the insureds. Unremitted insurance premiums and claims are held by us in a fiduciary capacity. The levels of funds held on behalf of clients and liabilities can fluctuate significantly depending on when we collect the premiums, claims, and refunds, make payments to underwriters and insureds, and collect funds from clients and make payments on their behalf, and upon the impact of foreign currency movements. Funds held on behalf of clients, because of their nature, are generally invested in highly liquid securities with highly rated, credit-worthy financial institutions. Fiduciary assets include funds held on behalf of clients of $8.34 billion and $7.2 billion at ~~June~~September 30, 2025 and December 31, 2024, respectively, and fiduciary receivables of $1210.4 billion and $10.3 billion at ~~June~~September 30, 2025 and December 31, 2024, respectively. While we earn investment income on the funds held in cash and money market funds, the funds cannot be used for general corporate purposes.

We maintain ~~multicurrency~~a multi-currency cash ~~pools~~pool with a third-party ~~banks~~bank in which various Aon entities participate. Individual Aon entities are permitted to overdraw on their individual accounts provided the overall global balance does not fall below zero. At ~~June~~September 30, 2025, some Aon entities had negative cash balances; ofhowever, ~~one~~the oroverall ~~more~~balance ~~non-U~~was positive.S Entities with a negative cash pool position incur interest expense, while those with a positive position earn interest income. ~~entities~~Interest ~~may~~rates ~~have~~are ~~been~~determined by local market conditions and vary by currency. For the period, if interest expense on negative; ~~however~~cash pool balances exceeds interest income associated with positive cash pool balances, as well as other income-producing assets, the ~~overall~~net ~~balance~~amount ~~was~~is ~~positive~~reported as interest expense for both the quarterly and year-to-date periods.

The following table summarizes our Cash and cash equivalents, Short-term investments, and Fiduciary assets as of ~~June~~September 30, 2025 (in millions):

Statement of Financial Position Classification

Asset Type

Cash and CashEquivalents

Short-termInvestments

FiduciaryAssets

Total

Certificates of deposit, bank deposits, or time deposits

1,~~008~~095

—

4,~~565~~400

5,~~573~~495

Money market funds

—

~~379~~207

3,~~750~~991

4,~~129~~198

Cash, Short-term investments, and funds held on behalf of clients

1,~~008~~095

~~379~~207

8,~~315~~391

9,~~702~~693

Fiduciary receivables

—

1210,~~362~~390

Total

1,~~008~~095

~~379~~207

2018,~~677~~781

2220,~~064~~083

Cash and cash equivalents and funds held on behalf of clients, including cash and cash equivalents and funds held on behalf of clients classified as held for sale, had a net increase of $~~991~~1.2 ~~million~~billion for the ~~six~~nine months ended ~~June~~September 30, 2025 compared to a net increase of $~~599~~1.3 ~~million~~billion for the ~~six~~nine months ended ~~June~~September 30, 2024. A summary of our cash flows provided by and used for operating, investing, and financing activities is as follows (in millions):

Six Months Ended June 30,

Nine Months Ended September 30,

2025

2024

Cash provided by operating activities

~~936~~2,084

~~822~~1,835

Cash used for investing activities

(~~268~~362)

(2,~~285~~256)

Cash provided by (used for) financing activities

(~~373~~1,141)

21,~~264~~565

Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients

~~696~~606

~~(202)~~177

Net increase in cash and cash equivalents and funds held on behalf of clients

~~991~~1,187

~~599~~1,321

Operating Activities

Net cash provided by operating activities during the ~~six~~nine months ended ~~June~~September 30, 2025 was $~~936~~2.1 ~~million~~billion, an increase of $~~114~~249 million compared to $~~822~~1.8 ~~million~~billion of Cash flows provided by operating activities in the prior year period. This amount represents Net income reported, generally adjusted for gains from sales of businesses, losses from sales of businesses, share-based compensation expense, depreciation expense, amortization and impairments, and other non-cash income and expenses, including pension settlement charges. Adjustments also include changes in working capital that relate primarily to the timing of payments of accounts payable and accrued liabilities, collection of receivables, and payments for Accelerating Aon United Program expenses.

Pension Contributions

Pension contributions were $5480 million for the ~~six~~nine months ended ~~June~~September 30, 2025, as compared to $2743 million for the ~~six~~nine months ended ~~June~~September 30, 2024. For the remainder of 2025, we expect to contribute approximately $348 million in cash to our pension plans, including contributions to non-U.S. pension plans, which are subject to changes in foreign exchange rates.

Accelerating Aon United Program Expenses

In the third quarter of 2023, we initiated a three-year restructuring program called the Accelerating Aon United Program with the purpose of streamlining our technology infrastructure, optimizing our leadership structure and resource alignment, and reducing the real estate footprint to align to our hybrid working strategy. The Program includes technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation and technology costs.

Program charges are recognized within the Program’s expenses on the accompanying Condensed Consolidated Statements of Income and consists of the following cost activities:

•Technology and other – includes costs associated with actions taken to rationalize certain applications and to optimize technology across the Company. These costs may include contract termination fees and other non-capitalizable costs associated with Program initiatives, which include professional service fees.

•Workforce optimization – includes costs associated with headcount reduction and other separation-related costs.

The changes in the Company’s liabilities for the Program as of ~~June~~September 30, 2025 are as follows (in millions):

	Technology and other		Workforce optimization		Asset impairments		Total
Liability Balance as of December 31, 2024	$	17	$	97	$	—	$	114
Charges	~~100~~138		~~100~~91		47		~~204~~236
Cash payments	(84124)		(82110)		—		(~~166~~234)
Foreign currency translation and other	—		5		—		5
Non-cash charges	(27)		(17)		(47)		(2331)
Liability balance as of June 30, 2025	$	31	$	103	$	—	$	134
Liability balance as of September 30, 2025	$	24	$	66	$	—	$	90
Total costs incurred from inception to date	$	~~240~~278	$	~~400~~391	$	8891	$	~~728~~760

The Program is currently expected to result in cumulative costs of $1.0 billion, consisting of approximately $0.9 billion of cash charges and approximately $0.1 billion of non-cash charges. Over the life of the program, our Risk Capital segment is expected to incur approximately $~~220~~230 million of charges, while our Human Capital segment is expected to incur approximately $60 million of charges, with the remaining charges relating to corporate expenses. The Program is estimated to generate annualized expense savings of approximately $350 million by the end of 2026, largely benefiting Compensation and benefits, Information technology, and Premises on the Condensed Consolidated Statements of Income. For the three and ~~six~~nine months ended ~~June~~September 30, 2025, total Program costs incurred were $9432 million and $~~204~~236 million, respectively. The Company expects to continue to review the implementation of elements of the Program throughout the course of the Program and, therefore, there may be changes to expected timing, estimates of expected costs and related savings. The Company realized an additional $35 million and $75110 million of expense savings in the first three and ~~six~~nine months of 2025, respectively, from Program actions, the majority of which were recognized within Compensation and benefits on the Condensed Consolidated Statements of Income.

Investing Activities

Cash flows used for investing activities were $~~268~~362 million during the ~~six~~nine months ended ~~June~~September 30, 2025, a decrease of $21.09 billion compared to $2.3 billion of Cash flows used for investing activities in the prior year period. Generally, the primary drivers of cash flows used for investing activities are acquisition of businesses, purchases of short-term investments, capital expenditures, and payments for investments. Generally, the primary drivers of cash flows provided by investing activities are sales of businesses, including collection of deferred consideration in connection with prior year business divestitures, sales of short-term investments, and proceeds from investments. The gains and losses corresponding to cash flows provided by proceeds from investments and used for payments for investments are primarily recognized in Other income (expense) in our Condensed Consolidated Statements of Income.

Short-term Investments

Short-term investments ~~increased~~decreased $~~160~~12 million to $~~379~~207 million at ~~June~~September 30, 2025 compared to December 31, 2024. The majority of our investments carried at fair value are money market funds. These money market funds are held throughout the world with various financial institutions. We are not aware of any market liquidity issues that would materially impact the fair value of these investments.

Acquisitions and Dispositions of Businesses

During the first ~~six~~nine months of 2025, we completed ~~nine~~fourteen acquisitions, ~~seven~~eight within Risk Capital and ~~two~~six within Human Capital. Cash consideration, net of cash and funds held on behalf of clients acquired, was $~~143~~276 million, which relates to cash consideration paid in 2025 for current year acquisitions. The majority of cash consideration for the Griffiths & Armour acquisition, completed in the first quarter of 2025, was recognized as a cash outflow in the fourth quarter of 2024. During the first ~~six~~nine months of 2024, we completed ~~eight~~sixteen acquisitions, ~~five~~eight within Risk Capital and ~~three~~eight within Human Capital. Cash consideration, net of cash and funds held on behalf of clients acquired, was $23.80 billion, which includes $34 million related to acquisitions completed in 2023.

During the first ~~six~~nine months of 2025, we completed three dispositions, one ~~disposition~~within Risk Capital and two within Human Capital, for an insignificant cash flow impact. During the first ~~six~~nine months of 2024, we completed ~~three~~five dispositions, ~~two~~three within Risk Capital and ~~one~~two within Human Capital, for $~~270~~602 million, net of cash and funds held on behalf of clients. During the first ~~six~~nine months of 2025 and 2024, a $108 million and $8284 million gain was recognized, respectively, related to the deferred consideration earned for the 2017 sale of the benefits administration and business process outsourcing business. Other than this deferred consideration, there was ana ~~insignificant~~$5 million cash flow impact during the first ~~six~~nine months of 2025 related to dispositions that occurred in prior periods.

Capital Expenditures

Our additions to fixed assets including capitalized software, amounted to $~~120~~189 million and $~~101~~163 million for the ~~six~~nine months ended ~~June~~September 30, 2025 and 2024, respectively, which primarily relate to new build out and the refurbishing of office facilities, software development costs, and computer equipment purchases. In the current period, we continue to support certain technology projects to drive long-term growth and real estate projects to align with our Smart Working strategy, including projects related to our AAU restructuring program.

Financing Activities

Cash flows used for financing activities were $~~373~~1.1 ~~million~~billion during the ~~six~~nine months ended ~~June~~September 30, 2025, a decrease of $2.7 billion compared to $21.36 billion of Cash flows provided by financing activities in the prior year period. Generally, the primary drivers of cash flow provided by financing activities are issuances of debt, changes in net fiduciary liabilities, and proceeds from issuance of shares. Generally, the primary drivers of cash flows used for financing activities are repayments of debt, share repurchases, cash paid for employee taxes on withholding shares, dividends paid to shareholders, transactions with noncontrolling interests, and other financing activities, such as payments for deferred consideration in connection with prior year business acquisitions.

Share Repurchase Program

We have a share repurchase program authorized by our Board of Directors. The Repurchase Program was established in April 2012 with $5.0 billion in authorized repurchases, and was increased by $5.0 billion in authorized repurchases in each of November 2014, June 2017, and November 2020, and by $7.5 billion in February 2022 for a total of $27.5 billion in repurchase authorizations.

The following table summarizes our share repurchase activity (in millions, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Shares repurchased	0.7		0.89		12.30		12.65
Average price per share	$	~~361~~362.2500	$	~~298~~339.0931	$	~~376~~371.7671	$	~~304~~316.2057
Repurchase costs recorded to accumulated deficit	$	250	$	~~250~~304	$	~~500~~750	$	~~500~~804

At ~~June~~September 30, 2025, the remaining authorized amount for share repurchase under the Repurchase Program was approximately $1.86 billion. Under the Repurchase Program, the Company has repurchased a total of ~~173~~174.52 million shares for an aggregate cost of approximately $25.79 billion. For further information regarding the Repurchase Program, see Part II, Item 2 of this report.

Borrowings

Total debt at ~~June~~September 30, 2025 was $1716.38 billion, ana ~~increase~~decrease of $~~272~~226 million compared to December 31, 2024. Further, commercial paper activity during the ~~six~~nine months ended ~~June~~September 30, 2025 and 2024 is as follows (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Total issuances (1)	$	21,~~295~~079	$	~~324~~425	$	34,~~444~~523	$	1,~~272~~697
Total repayments	(21,~~409~~183)		(~~324~~425)		(24,~~964~~147)		(12,~~863~~288)
Net issuances (repayments)	$	(~~114~~104)	$	—	$	~~480~~376	$	(591)

(1)The proceeds of the commercial paper issuances are generally used for short-term working capital needs.

In June 2024, Aon Global Limited’s $600 million 3.50500% Senior Notes matured and were repaid in full.

On April 25, 2024, Aon North America, Inc. drew its $2 billion delayed draw term loan and used proceeds, together with the proceeds of the notes issued on March 1, 2024 described below, to pay a portion of cash consideration in connection with the NFP Transaction, to repay certain debt of NFP, and to pay related fees and expenses. The term loan ~~matures~~was set to mature on April 24, 2027 and iswas prepayable at any time. As of ~~June~~September 30, 2025, Aon North America, Inc. repaid $1.26 billion of the outstanding balance. ~~The~~and the remaining outstanding balance iswas $~~800~~400 million. On October 31, 2025, Aon North America, Inc. repaid the remaining $400 million outstanding balance.

On March 1, 2024, Aon North America, Inc. issued $600 million 5.125% Senior Notes due in March 2027, $1 billion 5.150% Senior Notes due in March 2029, $650 million 5.300% Senior Notes due in March 2031, $1.75 billion 5.450% Senior Notes due in March 2034, and $2 billion 5.750% Senior Notes due in March 2054, totaling to an aggregate amount of $6 billion. The Company intends to use the net proceeds from the offering for general corporate purposes, including a portion of which was used to pay a portion of the cash consideration in connection with the acquisition of NFP, to repay certain debt of NFP and to pay related fees and expenses.

Other Liquidity Matters

Distributable Profits

We are required under Irish law to have available “distributable profits” to make share repurchases or pay dividends to shareholders. Distributable profits are created through the earnings of the Irish parent company and, among other methods, through intercompany dividends or a reduction in share capital approved by the High Court of Ireland. Distributable profits are not linked to a U.S. GAAP reported amount (e.g., Accumulated deficit). As of ~~June~~September 30, 2025 and December 31, 2024, we had distributable profits in excess of $30.95 billion and $29.7 billion, respectively. We believe that we will have sufficient distributable profits for the foreseeable future.

Revolving Credit Facilities

We expect cash generated by operations for 2025 to be sufficient to service our debt and contractual obligations, finance capital expenditures, and continue to pay dividends to our shareholders. Although cash from operations is expected to be sufficient to service these activities, we have the ability to access the commercial paper markets or borrow under our credit facilities to accommodate any timing differences in cash flows. Additionally, under current market conditions, we believe that we could access capital markets to obtain debt financing for longer-term funding, if needed.

As of ~~June~~September 30, 2025, we had two primary committed credit facilities outstanding: a $1.0 billion multi-currency U.S. credit facility expiring in September 2027 and a $1.0 billion multi-currency U.S. credit facility expiring in October 2028. In aggregate, these two facilities provide $2.0 billion in available credit.

Each of these primary committed credit facilities and the delayed draw term loan includes customary representations, warranties, and covenants, including financial covenants that require us to maintain specified ratios of adjusted consolidated EBITDA to consolidated interest expense and consolidated debt to adjusted consolidated EBITDA, in each case, tested quarterly. We did not have borrowings under either of these primary committed credit facilities as of ~~June~~September 30, 2025 ~~and~~or December 31, 2024~~, respectively~~. Additionally, we are in compliance with the financial covenants and all other covenants contained therein during the rolling 12 months ended ~~June~~September 30, 2025 and December 31, 2024~~, respectively~~.

Disposal Definitive Agreement and Subsequent Event

On September 3, 2025, Aon signed a definitive agreement to sell a significant majority of NFP’s wealth business including Wealthspire Advisors, Fiducient Advisors, Newport Private Wealth and related platforms to Madison Dearborn Partners, LLC and this disposition was completed on October 30, 2025 and total proceeds received on closing were $2.3 billion. Upon the completion of the sale in the fourth quarter, the gain will be recognized within Other income (expense) on the Consolidated Statement of Income.

Shelf Registration Statement

On June 22, 2023, we filed a shelf registration statement with the SEC, registering the offer and sale from time to time of an indeterminate amount of, among other securities, debt securities, preference shares, class A ordinary shares and convertible securities. Our ability to access the market as a source of liquidity is dependent on investor demand, market conditions, and other factors.

Rating Agency Ratings

The major rating agencies’ ratings of our debt at ~~July~~October 2531, 2025 appear in the table below.

Ratings

Senior Long-term Debt

Commercial Paper

Outlook

Standard & Poor’s

A-

A-2

Negative

Moody’s Investor Services

Baa2

P-2

Stable

Fitch, Inc.

BBB+

F-2

Stable

Letters of Credit and Other Guarantees

We have entered into a number of arrangements whereby our performance on certain obligations is guaranteed by a third party through the issuance of a letter of credit. We had total LOCs outstanding of approximately $~~126~~125 million at ~~June~~September 30, 2025, compared to $124 million at December 31, 2024. These LOCs cover the beneficiaries related to certain of our U.S. and Canadian secure non-qualified pension plan schemes, reinsurance obligations related to our own E&O liability insurance program, and secure deductible retentions for our own workers’ compensation program. We also have obtained LOCs to cover contingent payments for taxes and other business obligations to third parties, and other guarantees for miscellaneous purposes at our international subsidiaries.

We have certain contractual contingent guarantees for premium payments owed by clients to certain insurance companies. The maximum exposure with respect to such contractual contingent guarantees was approximately $~~161~~143 million at ~~June~~September 30, 2025, compared to $162 million at December 31, 2024.

Guarantee of Registered Securities

All issued and outstanding debt securities by Aon Corporation are guaranteed by Aon Global Limited, Aon plc, Aon North America, Inc., and Aon Global Holdings plc, and include the following (collectively, the “Aon Corporation Notes”):

Aon Corporation Notes 8.205% Junior Subordinated Notes due January 2027 4.50500% Senior Notes due December 2028 3.75750% Senior Notes due May 2029 2.80800% Senior Notes due May 2030 6.25250% Senior Notes due September 2040

All guarantees of Aon plc, Aon Global Limited, Aon North America, Inc., and Aon Global Holdings plc of the Aon Corporation Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon Corporation. There are no subsidiaries other than those listed above that guarantee the Aon Corporation Notes.

All issued and outstanding debt securities by Aon Global Limited are guaranteed by Aon plc, Aon Global Holdings plc, Aon North America, Inc., and Aon Corporation, and include the following (collectively, the “Aon Global Limited Notes”):

Aon Global Limited Notes 3.875% Senior Notes due December 2025 2.875% Senior Notes due May 2026 4.25250% Senior Notes due December 2042 4.45450% Senior Notes due May 2043 4.60600% Senior Notes due June 2044 4.75750% Senior Notes due May 2045

All guarantees of Aon plc, Aon Global Holdings plc, Aon North America, Inc., and Aon Corporation of the Aon Global Limited Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon Global Limited. There are no subsidiaries other than those listed above that guarantee the Aon Global Limited Notes.

All issued and outstanding debt securities by Aon North America, Inc. are guaranteed by Aon Global Limited, Aon plc, Aon Global Holdings plc, and Aon Corporation, and include the following (collectively, the “Aon North America, Inc. Notes”):


Aon North America, Inc. Notes
5.125% Senior Notes due March 2027
Delayed Draw Term Loan due April 2027
5.150% Senior Notes due March 2029
5.300% Senior Notes due March 2031
5.450% Senior Notes due March 2034
5.750% Senior Notes due March 2054

All guarantees of Aon Global Limited, Aon plc, Aon Global Holdings plc, and Aon Corporation of the Aon North America, Inc. Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of Aon North America, Inc. There are no subsidiaries other than those listed above that guarantee the Aon North America, Inc. Notes.

All co-issued and outstanding debt securities by Aon Corporation and Aon Global Holdings plc (together, the “Co-Issuers”) are guaranteed by Aon plc, Aon North America, Inc., and Aon Global Limited and include the following (collectively, the “Co-Issued Notes”):

Co-Issued Notes - Aon Corporation and Aon Global Holdings plc 2.85850% Senior Notes due May 2027 2.05050% Senior Notes due August 2031 2.60600% Senior Notes due December 2031 5.00000% Senior Notes due September 2032 5.35350% Senior Notes due February 2033 2.90900% Senior Notes due August 2051 3.90900% Senior Notes due February 2052

All guarantees of Aon plc, Aon Global Limited, and Aon North America, Inc. of the Co-Issued Notes are joint and several as well as full and unconditional. Senior Notes rank pari passu in right of payment with all other present and future unsecured debt which is not expressed to be subordinate or junior in rank to any other unsecured debt of the Co-Issuers. There are no subsidiaries other than those listed above that guarantee the Co-Issued Notes.

Aon Corporation, Aon North America, Inc., Aon Global Limited, and Aon Global Holdings plc are indirect wholly owned subsidiaries of Aon plc. Aon plc, Aon Global Limited, Aon Global Holdings plc, Aon North America, Inc., and Aon Corporation together comprise the “Obligor group”. The following tables set forth summarized financial information for the Obligor group, which reflects the financial results of Aon North America, Inc. for the year ended December 31, 2024 and for the period ended ~~June~~September 30, 2025.

Adjustments are made to the tables to eliminate intercompany balances and transactions between the Obligor group. Intercompany balances and transactions between the Obligor group and non-guarantor subsidiaries are presented as separate line items within the summarized financial information. These balances are presented on a net presentation basis, rather than a gross basis, as this better reflects the nature of the intercompany positions and presents the funding or funded position that is to be received or owed. No balances or transactions of non-guarantor subsidiaries are presented in the summarized financial information, including investments of the Obligor group in non-guarantor subsidiaries.

	Obligor Group
	Summarized Statement of Income Information
		Six Months Ended
		Nine Months Ended
(millions)		~~June~~September 30, 2025
Revenue		$	—
Operating loss		$	(5480)
Loss from non-guarantor subsidiaries before income taxes		$	(~~212~~588)
Net loss		$	(~~555~~1,159)
Net loss attributable to Aon shareholders		$	(~~555~~1,159)

	Obligor Group
	Summarized Statement of Financial Position Information
		As of		As of
(millions)		~~June~~September 30, 2025		December 31, 2024
Receivables due from non-guarantor subsidiaries		$	46,~~538~~196	$	9,611
Other current assets		~~216~~59		77
Total current assets		$	46,~~754~~255	$	9,688
Non-current receivables due from non-guarantor subsidiaries		$	261	$	10,768
Other non-current assets		1,~~534~~508		1,393
Total non-current assets		$	1,~~795~~769	$	12,161
Payables to non-guarantor subsidiaries		$	109,~~616~~903	$	7,628
Other current liabilities		56,~~093~~379		3,309
Total current liabilities		$	1516,~~709~~282	$	10,937
Non-current payables to non-guarantor subsidiaries		$	5,~~236~~216	$	9,801
Other non-current liabilities		16,~~806~~400		17,668
Total non-current liabilities		$	2221,~~042~~616	$	27,469

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

There have been no changes to our critical accounting policies, which include revenue recognition, pensions, goodwill and other intangible assets, contingencies, share-based payments, income taxes, Accelerating Aon United restructuring charges, and business combinations, as discussed in our Annual Report on Form 10-K for the year ended December 31, 2024.

NEW ACCOUNTING PRONOUNCEMENTS

Note 2 “Accounting Principles and Practices” to our Financial Statements contained in Part I, Item 1 of this report contains a discussion of recently issued accounting pronouncements and Securities and Exchange Commission final rules and their future potential impact on our financial results or disclosures, if determinable.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to potential fluctuations in earnings, cash flows, and the fair values of certain of our assets and liabilities due to changes in interest rates and foreign exchange rates. To manage the risk from these exposures, we enter into a variety of derivative instruments. We do not enter into derivatives or financial instruments for trading or speculative purposes.

The following discussion describes our specific exposures and the strategies we use to manage these risks. Refer to Note 2 “Summary of Significant Accounting Principles and Practices” in the Notes to Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 for a discussion of our accounting policies for financial instruments and derivatives.

Foreign Exchange Risk

We are subject to foreign exchange rate risk. Our primary exposures include exchange rates between the U.S. dollar and the euro, the British pound, the Canadian dollar, the Australian dollar, the Indian rupee, and the Japanese yen. We use over-the-counter options and forward contracts to reduce the impact of foreign currency risk to our financial statements.

Additionally, some of our non-U.S. subsidiaries receive revenue in currencies that differ from their functional currencies. Most significantly, our U.K. subsidiaries earn a portion of their revenue in U.S. dollars, euro, and Japanese yen, but most of their expenses are incurred in British pounds. We generally hedge up to 45% of our U.K. subsidiaries’ expected exposures to transactions denominated in U.S. dollar, euro, and Japanese yen. We generally do not hedge exposures beyond two years.

We also use forward and option contracts to economically hedge foreign exchange risk associated with monetary balance sheet exposures, such as intercompany notes and current assets and liabilities that are denominated in a non-functional currency and are subject to remeasurement.

The translated value of revenues and expenses from our international brokerage operations are subject to fluctuations in foreign exchange rates. A strengthening U.S. dollar has an adverse impact on our Net income attributable to shareholders, which are reported in U.S. dollars in our Condensed Consolidated Financial Statements. If we were to hypothetically translate prior year results at current quarter exchange rates, diluted earnings per share would have noa de minimis comparable impact and an unfavorable $0.1312 comparable impact during the three and ~~six~~nine months ended ~~June~~September 30, 2025, respectively. Further, adjusted diluted earnings per share, a non-GAAP measure as defined and reconciled under the caption “Review of Consolidated Results — Adjusted Diluted Earnings Per Share,” would have a favorable $0.0102 comparable impact and an unfavorable $0.1311 comparable impact during the three and ~~six~~nine months ended ~~June~~September 30, 2025, respectively, if we were to hypothetically translate prior year results at current quarter exchange rates.

Interest Rate Risk

Our fiduciary investment income is affected by changes in international and domestic short-term interest rates. We monitor our net exposure to short-term interest rates and, as appropriate, hedge our exposure with various derivative financial instruments. This activity primarily relates to brokerage funds held on behalf of clients in the U.S. and in continental Europe. A decrease in global short-term interest rates adversely affects our fiduciary investment income.

Item 4. Controls and Procedures

Evaluation of disclosure controls and procedures. We have conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of ~~June~~September 30, 2025. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures, as of ~~June~~September 30, 2025, were effective at a reasonable assurance level such that the information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC rules and forms, and is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in internal control over financial reporting. There were no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during the quarter ended ~~June~~September 30, 2025 that have materially affected, or that are reasonably likely to materially affect, our internal control over financial reporting.

Part II Other Information

Item 1. Legal Proceedings

See Note 15 “Claims, Lawsuits, and Other Contingencies” to our Financial Statements contained in Part I, Item 1 of this report, which is incorporated by reference herein.

Item 1A. Risk Factors

The risk factors set forth in the “Risk Factors” section in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024 reflect certain risks associated with existing and potential lines of business and contain “forward-looking statements” as discussed in “Information Concerning Forward-Looking Statements” elsewhere in this report. Readers should consider them in addition to the other information contained in this report as our business, financial condition or results of operations could be adversely affected if any of these risks actually occur.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

The following information relates to the purchase of equity securities by Aon or any affiliated purchaser during each month within the ~~second~~third quarter of 2025:

Period	Total Number of Shares Purchased	Average Price Paid per Share (1)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2)	Maximum Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (1)(2)
4/1/25 - 4/30/25	224,498	$	371.20	224,498	$	1,983,936,202
7/1/25 - 7/31/25	260,229	$	356.57	260,229	$	1,724,478,927
5/1/25 - 5/31/25	—	$	—	—	$	1,983,936,202
8/1/25 - 8/31/25	243,925	$	366.78	243,925	$	1,635,012,492
6/1/25 - 6/30/25	467,548	$	356.47	467,548	$	1,817,269,668
9/1/25 - 9/30/25	186,439	$	363.32	186,439	$	1,567,275,773
	692,046	$	361.25	692,046	$	1,817,269,668
	690,593	$	362.00	690,593	$	1,567,275,773

(1)Does not include commissions paid to repurchase shares.

(2)The Repurchase Program was established in April 2012 with $5.0 billion in authorized repurchases and was increased by $5.0 billion in authorized repurchases in each of November 2014, June 2017, and November 2020, and by $7.5 billion in February 2022 for a total of $27.5 billion in repurchase authorizations.

Unregistered Sales of Equity Securities

We did not make any unregistered sales of equity in the ~~second~~third quarter of 2025.

Item 3. Defaults Upon Senior Securities

Not Applicable.

Item 4. Mine Safety Disclosures

Not Applicable.

Item 5. Other Information

Not Applicable.

Item 6. Exhibits

Exhibits — The exhibits filed with this report are listed on the attached Exhibit Index.

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Aon plc
	(Registrant)
July 25, 2025	By:	/s/ Michael Neller
October 31, 2025	By:	/s/ David DeBrunner
	Michael Neller
	David DeBrunner
	GLOBAL CONTROLLER AND
	SENIOR VICE PRESIDENT, GLOBAL CONTROLLER
	CHIEF ACCOUNTING OFFICER
	AND CHIEF ACCOUNTING OFFICER
	(Principal Accounting Officer and duly authorized officer of Registrant)

Exhibit Index

Exhibit Number						Description of Exhibit
2.1						Agreement and Plan of Merger, by and among Aon plc, Randolph Acquisition Corp., Randolph Merger Sub LLC, NFP Intermediate Holdings A. Corp and NFP Parent Co, LLC, dated as of December 19, 2023 (incorporated by reference to Exhibit 2.1 to Aon’s Current Report on Form 8-K filed with the SEC on December 20, 2023).
3.1						Memorandum and Articles of Association of Aon plc (Incorporated by reference to Exhibit 3.1 to Aon’s Current Report on Form 8-K filed with the SEC on June 4, 2021).
10.1						Amendment to International Assignment Letter, dated June 27, 2025, between Aon Corporation and Greg Case (incorporated by reference to Exhibit 10.1 to Aon’s Current Report on Form 8-K filed with the SEC on July 3, 2025).
10.2						Aon plc 2011 Incentive Plan, as Amended and Restated (incorporated by reference to Exhibit 10.2 to Aon’s Current Report on Form 8-K filed with the SEC on July 3, 2025).
10.3*						Letter Agreement, dated August 1, 2022, between Aon Corporation and Mindy Simon.
10.4*						International Assignment Letter, effective July 1, 2023, between Aon Service Corporation and Mindy Simon.
10.5*						Amendment to International Assignment Letter, dated June 24, 2024, between Aon Service Corporation and Mindy Simon.
22.1*						Subsidiary Guarantors and Issuers of Guaranteed Securities.
31.1*						Certification of CEO.
31.2*						Certification of CFO.
32.1**						Certification of CEO Pursuant to section 1350 of Title 18 of the United States Code.
32.2**						Certification of CFO Pursuant to section 1350 of Title 18 of the United States Code.
101*						Interactive Data Files. The following materials are filed electronically with this Quarterly Report on Form 10-Q:
						101.SCH XBRL Taxonomy Extension Schema Document
						101.CAL XBRL Taxonomy Calculation Linkbase Document
						101.DEF XBRL Taxonomy Definition Linkbase Document
						101.PRE XBRL Taxonomy Presentation Linkbase Document
						101.LAB XBRL Taxonomy Calculation Linkbase Document
104						Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
* Filed herewith
** Furnished herewith

Filing Compare · Aon plc