Vertex director’s trusts sell 6,460 shares at $12.75

Vertex, Inc. director David DeStefano reported an open-market sale of Class A Common Stock by family trusts associated with him.

Rhea-AI Filing Summary

Vertex, Inc. director David DeStefano reported an open-market sale of Class A Common Stock by family trusts associated with him. The trusts sold 6,460 shares at $12.75 per share and held 197,572 shares afterward. Separately, DeStefano directly held 1,255,517 Class A shares as of the same date, indicating he retains a substantial equity position despite the modest sale.

Insights

Equity analyst

Small trust sale; director retains large direct stake in Vertex.

Vertex, Inc. director David DeStefano reported an open-market sale of 6,460 Class A shares at $12.75 per share. The transaction occurred in accounts held by individual trusts for his adult children, with his spouse serving as trustee.

Following the sale, those family trusts held 197,572 shares, while DeStefano directly held 1,255,517 Class A shares. The filing shows no derivative positions, so his exposure is primarily through common stock. The scale of the sale appears small relative to his overall reported holdings.

Insider Trade Summary

Net Seller: 6,460 shares

Net Sell 2 txns

Insider DeStefano David

Role Director

Sold 6,460 shs ($82K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	6,460	$12.75	$82K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 197,572 shares (Indirect, By Family Trusts); Class A Common Stock — 1,255,517 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares sold by family trusts: 6,460 shares Sale price per share: $12.75 per share Indirect holdings after sale: 197,572 shares +1 more

4 metrics

Shares sold by family trusts 6,460 shares Open-market sale on 2026-05-28

Sale price per share $12.75 per share Class A Common Stock sale

Indirect holdings after sale 197,572 shares Family trusts’ Class A holdings after 2026-05-28

Direct holdings after filing 1,255,517 shares DeStefano’s direct Class A holdings as of 2026-05-28

Key Terms

open-market sale, Class A Common Stock, indirect ownership, Form 4

4 terms

open-market sale financial

"reported an open-market sale of 6,460 Class A shares at $12.75 per share"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Class A Common Stock financial

"open-market sale of Class A Common Stock by family trusts"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

indirect ownership financial

"family trusts held 197,572 shares, reflecting indirect ownership linked to the reporting person"

Form 4 regulatory

"The Form 4 shows no derivative transactions for David DeStefano"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did Vertex (VERX) report for David DeStefano?

Vertex reported that director David DeStefano had an open-market sale of 6,460 shares of Class A Common Stock at $12.75 per share. The sale was executed through family trusts associated with his adult children, not from his directly held shares.

How many Vertex (VERX) shares did the family trusts sell and at what price?

The family trusts associated with David DeStefano sold 6,460 Vertex Class A Common shares at $12.75 per share. This was reported as an open-market or private transaction, indicating a routine disposition rather than a derivative exercise or tax-related transfer.

What are David DeStefano’s remaining indirect Vertex (VERX) holdings after the sale?

After the reported sale, the family trusts held 197,572 shares of Vertex Class A Common Stock. These trusts are for the benefit of his three adult children, with his spouse serving as trustee, reflecting indirect ownership linked to the reporting person.

How many Vertex (VERX) shares does David DeStefano hold directly?

As of the reported date, David DeStefano directly held 1,255,517 shares of Vertex Class A Common Stock. This direct position is separate from the 197,572 shares held by family trusts, showing a substantial ongoing equity stake in the company.

Did the Vertex (VERX) Form 4 include any option exercises or derivative positions?

The Form 4 shows no derivative transactions for David DeStefano in this filing. The derivative section is empty, and the only reported activity is the open-market sale of common stock by family trusts, plus an updated snapshot of his direct share holdings.

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

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Accepted by SEC EDGAR 06/01/2026 - 04:17 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 PENNSYLVANIA 19406

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/28/2026

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

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

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

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	05/28/2026		S		6,460	D	$12.75	197,572	I	By Family Trusts(1)
Class A Common Stock								1,255,517	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. 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.

	/s/ Lisa Coleman, Attorney-in-Fact	06/01/2026
	** 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.
* Form 4: SEC 1474 (03-26)