Vertex, Inc. — Director's Dealing 2025

Jan 3, 2025

SEC Form 4/A — Form 4/A

Issuer: Vertex, Inc. (VERX)
CIK: 0001806837
Period of Report: 2024-12-20

Reporting Person: Westphal Jeffrey (See Remarks)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-12-20	Class A Common Stock	C	450000	—	Acquired	457895	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-12-20	Class B Common Stock	$	C	450000	Disposed		Class A Common Stock (388000)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$		Class A Common Stock (2639927)	2639927	Indirect
Class B Common Stock	$		Class A Common Stock (1153756)	1153756	Indirect
Class B Common Stock	$		Class A Common Stock (332244)	332244	Indirect

Footnotes

F1: On December 24, 2024, the Reporting Person converted 450,000 shares of the Issuer's Class B Common Stock into shares of the Issuer's Class A common stock. These shares were inadvertently reported on the Form 4 filed by the Reporting Person on December 26, 2024 as transferred from the The 2009 Jeffrey R. Westphal Generation Skipping Trust ("GST") to the Reporting Person's individual account. The GST's ownership and the Reporting Person's direct ownership have been adjusted to correct this error.

F2: 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 (1) upon any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions or (2) 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.