X0206 3 2020-12-10 0 0001820566 Thayer Ventures Acquisition Corp TVAC 0001828708 Edelman Ross David C/O THAYER VENTURES ACQUISITION CORP 25852 MCBEAN PARKWAY, SUITE 508 VALENCIA CA 91355 1 0 0 0 Class B Common Stock 25000 D The shares will automatically convert into Class A Common Stock at the time of the Issuer's initial business combination. Exhibit 24: Power of Attorney /s/ R. David Edelman 2020-12-10