On November 22, 2023, Zia Uddin resigned from the Board of Directors of AdTheorent Holding Company, Inc. Mr. Uddin was a member of the Board?s Audit Committee (the ?Audit Committee?). The resignation of Mr. Uddin was not the result of any disagreement with the Company on any matter relating to its operations, policies or practices. In connection with Mr. Uddin?s resignation, the Board reduced the size of the Board to eight directors.

Concurrent with the resignation of Mr. Uddin from the Board, the Board appointed John Black to serve as a member of the Audit Committee.