On October 25, 2023, Teri List notified the Board of Directors of DoubleVerify Holdings, Inc. that she intends to resign as a member of the Board, effective as of March 15, 2024. Ms. List will remain on the Board as the Chairperson of the Audit Committee of the Board (the ?Audit Committee?) and as a member of the Compensation and Nominating & Corporate Governance Committees through March 15, 2024. Ms. List?s resignation is related to other board of director responsibilities and opportunities and is not the result of any disagreement with the Company on any matter relating to the Company?s operations, policies or practices.

Ms. List has been a member of the Board since 2020 and is a Class II director of the Company. In connection with Ms. List?s resignation, the Board appointed Rosie Perez, a current independent member of the Board and member of the Audit Committee, to replace Ms. List as Chair of the Audit Committee, effective as of March 15, 2024.