Vertex (VERX) director exercises RSUs and has shares withheld for taxes

Rhea-AI Filing Summary

Vertex, Inc. director David DeStefano exercised restricted stock units into Class A Common Stock and had shares withheld to cover taxes. He converted 101,395 restricted stock units, each for one Class A share, and received 101,395 shares at a price of $0.00 per share.

To satisfy tax obligations, 47,112 Class A shares were disposed of at $12.03 per share through a tax-withholding transaction, leaving him with 1,198,267 Class A shares held directly. He also has 101,396 restricted stock units remaining, scheduled to vest on February 23, 2027, and 204,032 Class A shares held indirectly by family trusts for his adult children, where his spouse serves as trustee.

Insider Trade Summary

101,395 shares exercised/converted

Mixed 4 txns

Insider DeStefano David

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	101,395	$0.00	--
Exercise	Class A Common Stock	101,395	$0.00	--
Tax Withholding	Class A Common Stock	47,112	$12.03	$567K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 101,396 shares (Direct); Class A Common Stock — 1,245,379 shares (Direct); Class A Common Stock — 204,032 shares (Indirect, By Family Trusts)

Footnotes (1)

1. Represents securities held by individual trusts for the benefit of the Reporting Person's three adult children. The Reporting Person's spouse serves as a trustee of each such trust. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The remaining restricted stock units will vest on February 23, 2027 and have no expiration date.

Form 4 Insider Transactions: What Each Field Means →

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
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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^*

DeStefano David

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

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	02/23/2026		M		101,395	A	$0	1,245,379	D
Class A Common Stock	02/23/2026		F		47,112	D	$12.03	1,198,267	D
Class A Common Stock								204,032	I	By Family Trusts(1)

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
Restricted Stock Units	(2)	02/23/2026		M			101,395	(3)	(3)	Class A Common Stock	101,395	$0	101,396	D

Explanation of Responses:

1. Represents securities held by individual trusts for the benefit of the Reporting Person's three adult children. The Reporting Person's spouse serves as a trustee of each such trust.

2. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock.

3. The remaining restricted stock units will vest on February 23, 2027 and have no expiration date.

	/s/ Lisa Coleman, Attorney-in-Fact	02/25/2026
	** 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

What insider transactions did Vertex (VERX) director David DeStefano report?

David DeStefano reported exercising 101,395 restricted stock units into Class A Common Stock and a related tax-withholding disposition of 47,112 shares. These transactions reflect equity compensation settlement rather than open-market buying or selling activity, based on awards previously granted by Vertex, Inc.

How many Vertex (VERX) shares did David DeStefano acquire and dispose in this Form 4?

He acquired 101,395 shares of Class A Common Stock upon exercising restricted stock units and disposed of 47,112 shares to cover tax obligations. After these transactions, his directly held Class A Common Stock position increased to 1,198,267 shares according to the reported holdings data.

At what price were Vertex (VERX) shares valued in David DeStefano’s tax-withholding transaction?

The tax-withholding disposition of 47,112 Class A Common Stock shares was recorded at a price of $12.03 per share. This transaction was coded as a tax-liability settlement, not an open-market sale, and reduced his directly held share count accordingly.

What Vertex (VERX) equity awards remain outstanding for David DeStefano after this Form 4?

After exercising 101,395 restricted stock units, DeStefano still holds 101,396 restricted stock units. These remaining units are scheduled to vest on February 23, 2027, providing a contingent right to receive one share of Class A Common Stock for each unit at vesting.

How many Vertex (VERX) shares does David DeStefano hold directly and indirectly after these transactions?

Following the reported transactions, DeStefano directly owns 1,198,267 shares of Class A Common Stock. In addition, 204,032 shares are held indirectly through individual family trusts for his three adult children, where his spouse serves as trustee for each trust.

What is the nature of the family trust holdings reported in this Vertex (VERX) Form 4?

The Form 4 notes that 204,032 Class A Common Stock shares are held by individual trusts benefiting DeStefano’s three adult children. His spouse acts as trustee of each trust, and these positions are reported as indirect ownership separate from his directly held Vertex shares.