X0609 4 2026-05-21 0001819928 DoubleVerify Holdings, Inc. DV 0001672302 Storms Jennifer false C/O DOUBLEVERIFY HOLDINGS, INC. NEW YORK NY 10013 1 0 Restricted Stock Units 2026-05-21 4 A 0 20000 0 A 2027-05-21 Common Stock 20000 20000 D Restricted stock units convert into common stock on a one-for-one basis. Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service. /s/ Andrew E. Grimmig, as Attorney-in-Fact for Jennifer Storms 2026-05-22