DoubleVerify: Steven John Mougis acquires 802 shares

ESPP pricing applied a 15% discount based on the lesser of the share price at the offering period’s start or the purchase date.

Available on EDGAR 11/06/2026 - 04:31 PM EST Accepted by SEC EDGAR 11/06/2026 - 04:30 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

DoubleVerify Holdings, Inc. (DV) Global Chief Comm. Officer Steven John Mougis acquired 802 shares of common stock directly on October 31, 2026, at $8.96 per share. The reported direct position following the transaction was 117,478 shares. Under the Employee Stock Purchase Plan, the reported price reflects a 15% discount of the lesser of the share price on the first day of the offering period or the purchase date; no Rule 10b5-1 plan is reported.

Insider Trade Summary

Other: 802 shares

Other 1 txn

Insider Mougis Steven John

Role Global Chief Comm. Officer

Type	Security	Shares	Price	Value
Other	Common Stock F1	802	$8.96	$7K

Holdings After Transaction: Common Stock — 117,478 shares (Direct)

Holdings Before and After: Common Stock, 116,676 to 117,478 shares (Direct)

Footnotes (1)

1. F1. Pursuant to the DoubleVerify Holdings, Inc. 2021 Employee Stock Purchase Plan (ESPP), the purchase price per share reported reflects a discount of 15% of the lesser of the share price at the first day of the offering period or the purchase date.

Key Figures

Common shares acquired: 802 shares Reported price per share: $8.96 per share Direct shares following transaction: 117,478 shares +1 more

4 metrics

Common shares acquired 802 shares October 31, 2026

Reported price per share $8.96 per share Employee Stock Purchase Plan transaction

Direct shares following transaction 117,478 shares After the October 31, 2026 transaction

Employee Stock Purchase Plan discount 15% Applied to the lesser of the stated share-price references

Key Terms

Employee Stock Purchase Plan (ESPP), offering period, purchase price per share

3 terms

Employee Stock Purchase Plan (ESPP) financial

"Pursuant to the ... 2021 Employee Stock Purchase Plan (ESPP)"

offering period financial

"the first day of the offering period"

purchase price per share financial

"the purchase price per share reported reflects a discount"

FAQ

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How many shares did Steven John Mougis acquire in DV?

Steven John Mougis, DoubleVerify Holdings, Inc.’s Global Chief Comm. Officer, acquired 802 shares of common stock on October 31, 2026, at $8.96 per share. The reported direct position following the transaction was 117,478 shares.

How was the DV ESPP purchase price determined?

The reported $8.96 per share price reflects a 15% discount of the lesser of the share price on the first day of the offering period or the purchase date under DoubleVerify’s Employee Stock Purchase Plan.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

Mougis Steven John

(Last) (First) (Middle)

C/O DOUBLEVERIFY HOLDINGS, INC.

462 BROADWAY

(Street)

NEW YORK NEW YORK 10013

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DoubleVerify Holdings, Inc. [ DV ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Global Chief Comm. Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/31/2026

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
Common Stock	10/31/2026		J(1)	V	802	A	$8.96(1)	117,478	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. Pursuant to the DoubleVerify Holdings, Inc. 2021 Employee Stock Purchase Plan (ESPP), the purchase price per share reported reflects a discount of 15% of the lesser of the share price at the first day of the offering period or the purchase date.

	/s/ Andrew E. Grimmig, as Attorney-in-Fact for Steven J. Mougis	11/06/2026
	** 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)