DoubleVerify (DV) CCO gains shares from RSU, PSU vesting and grant

Rhea-AI Filing Summary

DoubleVerify Holdings, Inc. Global Chief Commercial Officer Steven John Mougis reported routine equity compensation activity. On March 15, 2026, restricted stock units and performance stock units vested and were settled into 47,749 shares of common stock, while 17,220 shares were withheld at $10.21 per share to cover tax obligations.

In addition, on March 12, 2026 he received a new grant of 112,500 restricted stock units, each convertible one-for-one into common stock under time-based vesting schedules. Following these transactions, Mougis directly owns 66,591 shares of DoubleVerify common stock, reflecting net shares held after tax withholding.

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

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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^*

Mougis Steven John

(Last) (First) (Middle)

C/O DOUBLEVERIFY HOLDINGS, INC.

462 BROADWAY

(Street)

NEW YORK NY 10013

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

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
Common Stock	03/15/2026		M		9,376	A	$0(1)	45,438	D
Common Stock	03/15/2026		F(2)		3,381	D	$10.21	42,057	D
Common Stock	03/15/2026		M		4,210	A	$0(3)	46,267	D
Common Stock	03/15/2026		F(4)		1,519	D	$10.21	44,748	D
Common Stock	03/15/2026		M		3,171	A	$0(5)	47,919	D
Common Stock	03/15/2026		F(2)		1,144	D	$10.21	46,775	D
Common Stock	03/15/2026		M		27,056	A	$0(6)	73,831	D
Common Stock	03/15/2026		F(2)		9,754	D	$10.21	64,077	D
Common Stock	03/15/2026		M		2,125	A	$0(7)	66,202	D
Common Stock	03/15/2026		F(2)		767	D	$10.21	65,435	D
Common Stock	03/15/2026		M		250	A	$0(8)	65,685	D
Common Stock	03/15/2026		F(4)		91	D	$10.21	65,594	D
Common Stock	03/15/2026		M		1,143	A	$0(9)	66,737	D
Common Stock	03/15/2026		F(2)		413	D	$10.21	66,324	D
Common Stock	03/15/2026		M		418	A	$0(10)	66,742	D
Common Stock	03/15/2026		F(2)		151	D	$10.21	66,591	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
Restricted Stock Units	(11)	03/12/2026		A		112,500		(12)	(12)	Common Stock	112,500	$0	112,500	D
Restricted Stock Units	(11)	03/15/2026		M			9,376	(1)	(1)	Common Stock	9,376	$0	103,124	D
Performance Stock Units	(13)	03/15/2026		M			4,210	(3)	(3)	Common Stock	4,210	$0	5,891	D
Restricted Stock Units	(11)	03/15/2026		M			3,171	(5)	(5)	Common Stock	3,171	$0	38,047	D
Restricted Stock Units	(11)	03/15/2026		M			27,056	(6)	(6)	Common Stock	27,056	$0	108,224	D
Restricted Stock Units	(11)	03/15/2026		M			2,125	(7)	(7)	Common Stock	2,125	$0	16,998	D
Performance Stock Units	(13)	03/15/2026		M			250	(8)	(8)	Common Stock	250	$0	752	D
Restricted Stock Units	(11)	03/15/2026		M			1,143	(9)	(9)	Common Stock	1,143	$0	4,572	D
Restricted Stock Units	(11)	03/15/2026		M			418	(10)	(10)	Common Stock	418	$0	0	D

Explanation of Responses:

1. Each restricted stock unit was granted on March 12, 2026. 8.33% of the restricted stock units vested and were settled on March 15, 2026 (the "2026 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

2. Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

3. Each performance stock unit was granted on March 31, 2025. 41.67% of the earned shares vested and were settled on the 2026 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

4. Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of performance stock units.

5. Each restricted stock unit was granted on March 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

6. Each restricted stock unit was granted on March 13, 2025. The restricted stock units vested 12.5% on the 2025 Vesting Date, and the remainder of the restricted stock units vest at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

7. Each restricted stock unit was granted on March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

8. Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

9. Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

10. Each restricted stock unit was granted on February 15, 2022. 6.25% of the restricted stock units vested and settled on June 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

11. Restricted stock units convert into common stock on a one-for-one basis.

12. The restricted stock units were granted on March 12, 2026. 8.33% of the restricted stock units vest and settle on March 15, 2026, and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

13. Performance stock units convert into common stock on a one-for-one basis.

	/s/ Andrew E. Grimmig, as Attorney-in-Fact for Steven J. Mougis	03/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What did DoubleVerify (DV) executive Steven Mougis report in this Form 4?

Steven Mougis reported routine equity compensation activity, including RSU and PSU vesting and related tax withholding. Several derivative awards converted into common stock, and no open-market purchases or sales were disclosed. The filing mainly reflects scheduled compensation and tax settlements rather than discretionary trading.

How many DoubleVerify (DV) shares did Steven Mougis receive from RSU and PSU vesting?

Vesting of restricted stock units and performance stock units resulted in 47,749 DoubleVerify common shares being issued to Steven Mougis. These shares came from multiple awards that convert into stock on a one-for-one basis as they vest under the disclosed quarterly vesting schedules.

How many DV shares were withheld for taxes in Steven Mougis’s Form 4?

The filing shows 17,220 DoubleVerify common shares were withheld to satisfy tax obligations tied to vesting. These F-code transactions occurred at a price of $10.21 per share and reflect tax-withholding dispositions, not open-market sales or discretionary selling activity by the executive.

What new equity award did Steven Mougis receive from DoubleVerify (DV)?

On March 12, 2026, Steven Mougis received a new grant of 112,500 restricted stock units. Each unit converts into one share of DoubleVerify common stock, with 8.33% vesting on March 15, 2026 and the remainder vesting at 8.33% on each quarterly anniversary thereafter.

How many DoubleVerify (DV) shares does Steven Mougis own after these transactions?

After the reported transactions, Steven Mougis directly owns 66,591 shares of DoubleVerify common stock. This figure reflects the net shares held following RSU and PSU vesting events and tax-withholding share dispositions required to cover associated tax liabilities.

Are the share dispositions in Steven Mougis’s DoubleVerify Form 4 open-market sales?

The dispositions are coded F and represent tax-withholding transactions, not market sales. Shares were withheld by DoubleVerify to pay taxes arising from vesting of restricted stock units and performance stock units, so they do not indicate discretionary selling in the open market.