X0306 4 2021-11-22 0 0001819928 DoubleVerify Holdings, Inc. DV 0001854132 Providence VII U.S. Holdings L.P. C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001857469 Providence Equity GP VII-A L.P. C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001857463 Providence Public Master L.P. C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001831271 Providence Butternut Co-Investment L.P. C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001035233 NELSON JONATHAN M C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001476657 Phillips J. David C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001857194 Tabet Karim A C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001857411 Tisdale Andrew A C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 0001320307 Dominguez Michael J C/O PROVIDENCE EQUITY PARTNERS L.L.C. 50 KENNEDY PLAZA, 18TH FL PROVIDENCE RI 02903 0 0 1 0 Common Stock 2021-11-22 4 S 0 9021853 30.0781 D 81126217 D Common Stock 2021-11-22 4 S 0 58147 30.0781 D 522867 I By Providence Butternut Co-Investment L.P. Common Stock 871520 I By Providence Public Master L.P. The securities reported represent shares of common stock of DoubleVerify Holdings, Inc. (the "Issuer") sold by Providence VII U.S. Holdings L.P. ("Providence VII") in a registered secondary transaction at a net price per share of $30.078125 after deducting underwriting discounts and commissions. The securities reported are held directly by Providence VII and may be deemed to be beneficially owned by Providence Equity GP VII-A L.P. ("Providence GP") because Providence GP is the general partner of Providence VII. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez control Providence Holdco (International) GP Ltd. ("Holdco"), which is the general partner of Providence Fund Holdco (International) L.P. Providence Fund Holdco (International) L.P. is the general partner of PEP VII-A International Ltd., which is the general partner of Providence GP. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by Providence VII due to their relationships with Holdco. Each of Providence GP, Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez hereby disclaims beneficial ownership of the shares held by Providence VII, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form. R. Davis Noell has separately filed a Form 4. The securities reported represent shares of common stock of the Issuer sold by Providence Butternut Co-Investment L.P. ("Providence Butternut") in a registered secondary transaction at a net price per share of $30.078125 after deducting underwriting discounts and commissions. The securities reported are held directly by Providence Butternut and may be deemed to be beneficially owned by Providence GP because Providence GP is the general partner of Providence Butternut. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez control Holdco, which is the general partner of Providence Fund Holdco (International) L.P. Providence Fund Holdco (International) L.P. is the general partner of PEP VII-A International Ltd., which is the general partner of Providence GP. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by Providence Butternut due to their relationships with Holdco. Each of Providence GP, Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez hereby disclaims beneficial ownership of the shares held by Providence Butternut, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form. The securities reported are held directly by Providence Public Master L.P. Providence Public Master L.P. is an investment fund affiliated with Providence VII and thus Providence VII may be deemed to beneficially own the securities held by Providence Public Master L.P. Providence VII U.S. Holdings L.P.: /s/ Sarah N. Conde, Senior Legal Counsel & Chief Compliance Officer 2021-11-24 Providence Equity GP VII-A L.P.: /s/ Sarah N. Conde, Senior Legal Counsel & Chief Compliance Officer 2021-11-24 Providence Public Master L.P.: /s/ Sarah N. Conde, Senior Legal Counsel & Chief Compliance Officer 2021-11-24 Providence Butternut Co-Investment L.P.: /s/ Sarah N. Conde, Senior Legal Counsel & Chief Compliance Officer 2021-11-24 /s/ Sarah N. Conde, as Attorney-in-Fact for Jonathan M. Nelson 2021-11-24 /s/ Sarah N. Conde, as Attorney-in-Fact for J. David Phillips 2021-11-24 /s/ Sarah N. Conde, as Attorney-in-Fact for Karim A. Tabet 2021-11-24 /s/ Sarah N. Conde, as Attorney-in-Fact for Andrew A. Tisdale 2021-11-24 /s/ Sarah N. Conde, as Attorney-in-Fact for Michael J. Dominguez 2021-11-24