Vertex director exercises RSUs, withholds shares for tax

Vertex, Inc. director David DeStefano reported multiple equity transactions on February 20, 2026 tied to restricted stock unit (RSU) vesting.

Rhea-AI Filing Summary

Vertex, Inc. director David DeStefano reported multiple equity transactions on February 20, 2026 tied to restricted stock unit (RSU) vesting. He exercised RSUs that converted into shares of Class A Common Stock, and then delivered a portion of those shares to cover tax obligations.

Two RSU awards were exercised at a price of $0.00 per unit, each RSU representing one share of Class A Common Stock. To satisfy tax liabilities, DeStefano disposed of 23,705 shares and 12,523 shares of Class A Common Stock at $12.74 per share through tax-withholding transactions, rather than open‑market sales.

After these transactions, he directly held 1,143,984 shares of Class A Common Stock and additional RSUs that will vest in equal annual installments on February 22, 2027 and 2028 and on February 20, 2027, 2028 and 2029. He also indirectly held 204,032 shares of Class A Common Stock through family trusts, where his spouse serves as trustee.

Insider Trade Summary

113,541 shares exercised/converted

Exercise 7 txns

Insider DeStefano David

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	69,527	$0.00	$0.00
Exercise	Restricted Stock Units	44,014	$0.00	$0.00
Exercise	Class A Common Stock	69,527	$0.00	$0.00
Exercise Price or Tax Liability	Class A Common Stock	23,705	$12.74	$302K
Exercise	Class A Common Stock	44,014	$0.00	$0.00
Exercise Price or Tax Liability	Class A Common Stock	12,523	$12.74	$160K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 271,098 contracts (Direct); Class A Common Stock — 1,143,984 shares (Direct); Class A Common Stock — 204,032 shares (Indirect, By Family Trusts)

Footnotes (5)

1. F1. Includes 84 shares acquired through the Company's Employee Stock Purchase Plan.
2. F2. 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.
3. F3. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock.
4. F4. The remaining restricted stock units will vest in two equal annual installments on each of February 22, 2027 and February 22, 2028 and have no expiration date.
5. F5. The remaining restricted stock units will vest in three equal annual installments on each of February 20, 2027, February 20, 2028 and February 20, 2029 and have no expiration date.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Vertex (VERX) director David DeStefano report in this Form 4?

David DeStefano reported RSU exercises and related tax-withholding share dispositions. RSUs converted into Class A Common Stock, and some shares were delivered back to cover tax liabilities, rather than sold in the open market.

How many Vertex (VERX) shares did David DeStefano dispose of for taxes?

He disposed of 23,705 shares and 12,523 shares of Class A Common Stock at $12.74 per share. These transactions were coded “F,” meaning they were used to pay tax liabilities associated with equity awards.

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

After the reported transactions, he directly held 1,143,984 shares of Class A Common Stock. In addition, he indirectly held 204,032 shares through family trusts, with his spouse serving as trustee for those trusts.

What do the RSU vesting schedules mean for Vertex (VERX) director David DeStefano?

The remaining restricted stock units vest in equal installments across 2027, 2028 and 2029. As each installment vests, DeStefano will receive additional Class A Common Stock, subject to any future tax-withholding share dispositions.

How were family trusts involved in this Vertex (VERX) insider filing?

The filing notes 204,032 shares of Class A Common Stock are held indirectly through individual trusts for DeStefano’s three adult children. His spouse serves as trustee of each trust, and these holdings are reported as indirect ownership.

Were any of David DeStefano’s Vertex (VERX) transactions open-market buys or sells?

No open-market purchases or sales were reported. The transactions involved RSU exercises at $0.00 and share dispositions coded “F,” which indicate delivery of shares to satisfy tax liabilities related to those equity awards.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/24/2026 - 04:26 PM Learn about SEC filing dates

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^*

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)
02/20/2026

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	02/20/2026		M		69,527	A	$0	1,136,198(1)	D
Class A Common Stock	02/20/2026		F		23,705	D	$12.74	1,112,493	D
Class A Common Stock	02/20/2026		M		44,014	A	$0	1,156,507	D
Class A Common Stock	02/20/2026		F		12,523	D	$12.74	1,143,984	D
Class A Common Stock								204,032	I	By Family Trusts(2)

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	(3)	02/20/2026		M			69,527	(4)	(4)	Class A Common Stock	69,527	$0	139,055	D
Restricted Stock Units	(3)	02/20/2026		M			44,014	(5)	(5)	Class A Common Stock	44,014	$0	132,043	D

Explanation of Responses:

1. Includes 84 shares acquired through the Company's Employee Stock Purchase Plan.

2. 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.

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

4. The remaining restricted stock units will vest in two equal annual installments on each of February 22, 2027 and February 22, 2028 and have no expiration date.

5. The remaining restricted stock units will vest in three equal annual installments on each of February 20, 2027, February 20, 2028 and February 20, 2029 and have no expiration date.

	/s/ Lisa Coleman, Attorney-in-Fact	02/24/2026
	** 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).
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