[Form 4] Vertex, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Insider Trading Alert: The ITEM SECOND IRR. TRUST FBO ANNE MARIE WESTPHAL, a 10% owner and 13(D) group member of Vertex, has executed multiple sales of Class A Common Stock over three consecutive trading days:

• June 20, 2025: Sold 8,832 shares at weighted average price of $35.12
• June 23, 2025: Sold 510 shares at $35.00
• June 24, 2025: Sold 14,425 shares at weighted average price of $35.24

Following these transactions, the trust's holdings decreased to 173,073.706 shares, all held directly. The total disposition amounts to 23,767 shares, with sale prices ranging from $35.00 to $35.625. This significant insider selling activity by a major shareholder could signal important changes in insider sentiment.

Positive

• None.

Negative

• 10% owner and 13(D) group member sold a total of 23,767 shares of Class A Common Stock over three days (June 20-24, 2025) at prices ranging from $35.00 to $35.625, reducing their position from 188,008 to 173,073 shares
• The significant share disposal by a major shareholder could signal reduced confidence in the company's near-term prospects

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ITEM SECOND IRR. TRUST FBO ANNE MARIE WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001

(Last) (First) (Middle)

C/O VERTEX, INC.

2301 RENAISSANCE BLVD

(Street)

KING OF PRUSSIA PA 19406

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Vertex, Inc. [ VERX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)	X	Other (specify below)
			13(D) GROUP MEMBER

3. Date of Earliest Transaction (Month/Day/Year)
06/20/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	06/20/2025		S		8,832	D	$35.1191(1)	188,008.706	D
Class A Common Stock	06/23/2025		S		510	D	$35	187,498.706	D
Class A Common Stock	06/24/2025		S		14,425	D	$35.2436(2)	173,073.706	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.00 to $35.625.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.00 to $35.445.

	/s/ Anne Marie Westphal, as Trustee	06/24/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many shares of VERX stock did the ITEM SECOND IRR. TRUST sell on June 24, 2025?

The ITEM SECOND IRR. TRUST sold 14,425 shares of VERX Class A Common Stock on June 24, 2025 at a weighted average price of $35.2436 per share.

What was the total number of VERX shares sold by the trust across all reported transactions?

The trust sold a total of 23,767 shares of VERX Class A Common Stock across three transactions: 8,832 shares on June 20, 510 shares on June 23, and 14,425 shares on June 24, 2025.

What is the remaining VERX stock position held by the trust after these sales?

After the reported transactions, the trust retained beneficial ownership of 173,073.706 shares of VERX Class A Common Stock held directly (D).

What was the price range for VERX shares sold by the trust on June 20, 2025?

The shares sold on June 20, 2025 were transacted at prices ranging from $35.00 to $35.625, with a weighted average price of $35.1191 per share.

What is the relationship between the reporting person and VERX?

The reporting person (ITEM SECOND IRR. TRUST) is classified as both a 10% Owner of VERX and a 13(D) GROUP MEMBER according to the Form 4 filing.