UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): ~~June~~ 11August 6, 2025

VERTEX, INC.

(Exact name of registrant as specified in its charter)

Delaware	001-39413	23-2081753
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification No.)
(State or other jurisdictionof incorporation or organization)	(CommissionFile Number)	(I.R.S. EmployerIdentification No.)

~~2301 Renaissance Blvd. King of Prussia, Pennsylvania 19406~~

2301 Renaissance Blvd.

King of Prussia, Pennsylvania 19406

(Address of principal executive offices) (Zip Code)

(800) 355-3500

(Registrant’s telephone number, include area code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ ☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Class A Common Stock, $0.001 par value per share		VERX		The Nasdaq Stock Market LLC

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Class A Common Stock, $0.001 par value per share		VERX		The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ¨☐

~~Item 5.07. Submission of Matters to a Vote of Security Holders~~

~~The~~Item 2.02. ~~following~~Results ~~nominees were elected as directors, each to hold office until the 2028 Annual Meeting~~ of ~~Stockholders,~~Operations orand ~~the~~Financial ~~earlier to occur of his or her death, disqualification, resignation, or removal or the appointment of his or her successor, by the vote set forth below:~~Condition.

Nominee	For		Withheld		Broker Non-Votes
Philip Saunders		828,556,917.000		13,522,981.000		3,506,615.000
J. Richard Stamm		827,054,383.000		15,025,515.000		3,506,615.000
Mark J. Mendola		841,066,540.000		1,013,358.000		3,506,615.000

On August 6, 2025, Vertex, Inc. (the “Company”) issued a press release announcing its financial results for the second quarter ended June 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The ~~appointment~~information ofcontained ~~Crowe~~in ~~LLP~~this asItem 2.02, ~~our~~including ~~independent auditor~~Exhibit 99.1 hereto, shall not be deemed “filed” for purposes of Section 18 of the ~~fiscal~~Securities ~~year~~Exchange ~~ending~~Act ~~December~~of 311934, ~~2025~~as ~~was~~amended ~~ratified~~(the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing made by the ~~vote~~Company ~~set~~under ~~forth~~the ~~below:~~Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filings, unless expressly incorporated by specific reference in such filing.

For		Against		Abstain		Broker Non-Vote
845,008,886.000		572,763.000		4,864.000		0

Item 9.01. Financial Statements and Exhibits.

~~SIGNATURES~~(d) Exhibits.

~~Pursuant~~The tofollowing ~~the~~exhibit ~~requirements~~relating ofto ~~the~~Item 2.02 ~~Securities~~shall ~~Exchange~~be ~~Act~~deemed ~~of 1934, the registrant has duly caused this report~~ to be ~~signed~~furnished, onand ~~its~~not ~~behalf by the undersigned hereunto duly authorized.~~filed:

	VERTEX, INC.
Date: June 17, 2025	By:	/s/ Bryan Rowland
	Name:	Bryan Rowland
	Title:	General Counsel and Secretary

Exhibit No.		Description

99.1		Press Release dated August 6, 2025
104		Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)

SIGNATURES

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 hereunto duly authorized.


	VERTEX, INC.

Date: August 6, 2025	By:	/s/ Bryan Rowland
	Name:	Bryan Rowland
	Title:	General Counsel and Secretary

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