X0306 4 2021-11-30 0 0001637873 ACV Auctions Inc. ACVA 0001252022 GOODMAN ROBERT P C/O ACV AUCTIONS INC. 640 ELLICOTT STREET, #321 BUFFALO NY 14203 1 0 0 0 Class A Common Stock 2021-11-30 4 S 0 44627 21.13 D 434445 D Class A Common Stock 2021-11-30 4 S 0 16494 21.13 D 0 I See footnote Class A Common Stock 2021-11-30 4 S 0 29145 21.13 D 0 I See footnote Class A Common Stock 2021-12-01 4 S 0 11737 21.04 D 429369 D On November 30, 2021, the Reporting Person sold 44,627 shares of Class A Common Stock of the Issuer (the "Shares"). The Shares were sold in multiple executions at a price per share ranging from $21.00 to $21.49, with an average execution price per share of $21.13. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities and Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding such individual executions. On November 30, 2021, the NB Group, LLC ("NB Group") sold 16,494 shares of Class A Common Stock of the Issuer (the "NB Shares"). The NB Shares were sold in multiple executions at a price per share ranging from $21.00 to $21.49, with an average execution price per share of $21.13. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities and Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding such individual executions. The shares reported are held by the NB Group. NB Group is controlled by the Reporting Person, and the Reporting Person disclaims beneficial ownership of the shares held by this entity, except to the extent of his pecuniary interest therein, if any. On November 30, 2021, Cracktuxet II, LLC ("Cracktuxet II") sold 29,145 shares of Class A Common Stock of the Issuer (the " Cracktuxet Shares"). The Cracktuxet Shares were sold in multiple executions at a price per share ranging from $21.00 to $21.49, with an average execution price per share of $21.13. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities and Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding such individual executions. The shares reported are held by Cracktuxet II. Cracktuxet II is controlled by the Reporting Person, and the Reporting Person disclaims beneficial ownership of the shares held by this entity, except to the extent of his pecuniary interest therein, if any. On December 1, 2021, the Reporting Person sold 5,076 shares of Class A Common Stock of the Issuer (the "12/1 Shares"). The 12/1 Shares were sold in multiple executions at a price per share ranging from $21.00 to $21.22, with an average execution price per share of $21.04. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities and Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding such individual executions. /s/ Robert P. Goodman 2021-12-02