Vertex, Inc. — Director's Dealing 2026

Feb 18, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Vertex, Inc. (VERX)
CIK: 0001806837
Period of Report: 2026-02-13

Reporting Person: Westphal Jeffrey (See Remarks)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-13	Class A Common Stock	P	247740	$13.0825	Acquired	247740	Indirect
2026-02-17	Class A Common Stock	P	150000	$12.5349	Acquired	397740	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	7895	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$		Class A Common Stock (1125927)	1125927	Indirect
Class B Common Stock	$		Class A Common Stock (388000)	388000	Direct

Footnotes

F1: The shares of Class A Common Stock were purchased in multiple transactions at prices ranging from $12.73 to $13.44 per share on February 13, 2026. The $13.0825 purchase price reported above is the weighted average purchase price. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price.

F2: The shares of Class A Common Stock were purchased in multiple transactions at prices ranging from $12.35 to $13.13 per share on February 17, 2026. The $12.5349 purchase price reported above is the weighted average purchase price. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price.

F3: The Class B Common Stock is convertible at any time at the option of the holder into one share of the Issuer's Class A Common Stock and has no expiration date. The Class B Common Stock will automatically convert into shares of the Issuer's Class A Common Stock on a one-to-one basis either (i) upon any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions or (ii) if the voting power of the Issuer's outstanding Class B Common Stock represents less than 10% of the combined voting power of all of the Issuer's outstanding common stock.