ITEM SECOND IRR. TRUST FBO JACOB J. WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001 - 07 Oct 2024 Form 4 Insider Report for Vertex, Inc. (VERX)

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	VERX	Class A Common Stock	Sale	$2,162,314	-52,713	-4.4%	$41.02	1,144,993	07 Oct 2024	Direct	F1
transaction	VERX	Class A Common Stock	Sale	$1,158,022	-28,027	-2.4%	$41.32	1,116,966	08 Oct 2024	Direct	F2
transaction	VERX	Class A Common Stock	Sale	$2,029,012	-49,114	-4.4%	$41.31	1,067,852	09 Oct 2024	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.25 to $41.49.
F2	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.83 to $41.66.
F3	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.78 to $41.84.