Mark S. Zagorski - 31 Dec 2025 Form 4 Insider Report for DoubleVerify Holdings, Inc. (DV)

Role
Chief Executive Officer, Director
Signature
/s/ Andrew E. Grimmig, as Attorney-in-Fact for Mark S. Zagorski
Issuer symbol
DV
Transactions as of
31 Dec 2025
Net transactions value
-$85,262
Form type
4
Filing time
05 Jan 2026, 16:08:36 UTC
Previous filing
17 Dec 2025
Next filing
12 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Zagorski Mark Chief Executive Officer, Director C/O DOUBLEVERIFY HOLDINGS, INC., 462 BROADWAY, NEW YORK /s/ Andrew E. Grimmig, as Attorney-in-Fact for Mark S. Zagorski 05 Jan 2026 0001709574

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DV Common Stock Options Exercise $0 +13,476 +2.8% $0.000000 496,039 31 Dec 2025 Direct F1
transaction DV Common Stock Tax liability $85,262 -7,453 -1.5% $11.44 488,586 31 Dec 2025 Direct F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction DV Restricted Stock Units Options Exercise $0 -13,476 -8.3% $0.000000 148,232 31 Dec 2025 Common Stock 13,476 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit was granted on August 19, 2025. 8.33% of the restricted stock units vested and were settled on December 31, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date, subject to Mr. Zagorski's continued employment.
F2 Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.
F3 Restricted stock units convert into common stock on a one-for-one basis.