X0306 4 2021-10-28 0 0001819928 DoubleVerify Holdings, Inc. DV 0001399934 Blumberg Capital II, L. P. 432 BRYANT STREET SAN FRANCISCO CA 94107 0 0 1 0 0001858750 Blumberg Capital Management II, L.L.C. 432 BRYANT STREET SAN FRANCISCO CA 94107 0 0 1 0 0001859497 Blumberg David James 432 BRYANT STREET SAN FRANCISCO CA 94107 0 0 1 0 Common Stock 2021-10-28 4 J 0 3333335 0.00 D 16666665 I See footnote Common Stock 2021-10-28 4 J 0 697623 0.00 A 697623 I See footnote Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by Blumberg Capital II, L.P. ("BC II") to its general partner and limited partners without additional consideration. Shares are held by BC II. Blumberg Capital Management II, L.L.C. ("BCM II") is the sole general partner of BC II. David J. Blumberg is the managing member of BCM II. BCM II and Mr. Blumberg have voting and investment power over the shares held by BC II. Each of BCM II and Mr. Blumberg disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Shares are held by BCM II. David J. Blumberg is the managing member of BCM II and has voting and investment power over the shares held by BCM II. Mr. Blumberg disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. Blumberg Capital II, L.P., By: Blumberg Capital Management II, L.L.C., its general partner, By /s/ David J. Blumberg, Managing Member 2021-11-01 Blumberg Capital Management II, L.L.C., By /s/ David J. Blumberg, Managing Member 2021-11-01 /s/ David J. Blumberg 2021-11-01