X0206 3 2020-12-10 0 0001820566 Thayer Ventures Acquisition Corp TVAC 0001828705 Hemmeter Christopher C/O THAYER VENTURES ACQUISITION CORP 25852 MCBEAN PARKWAY, SUITE 508 VALENCIA CA 91355 1 1 1 0 See Footnote (3) Class B Common Stock 4187500 I See Footnote The shares will automatically convert into Class A Common Stock at the time of the Issuer's initial business combination. Includes up to 562,500 shares that are subject to forfeiture in the event the underwriters of the initial public offering of the Issuer's securities do not exercise in full their over-allotment option as described in the Issuer's registration statement. The shares are held by Thayer Ventures Acquisition Holdings LLC ("Sponsor"). The Reporting Person serves as a manager of Sponsor, and disclaims beneficial ownership of the shares held by Sponsor except to the extent of his pecuniary interest therein. Officer Title: Co-Chief Executive Officer, Co-President and Chief Financial Officer Exhibit 24: Power of Attorney /s/ Christopher Hemmeter 2020-12-10