ACV Auctions Chief Legal Officer Leanne Fitzgerald's Stock Transactions for Tax Withholding

This Form 4 filing reports that Leanne Fitzgerald, Chief Legal Officer of ACV Auctions Inc., had 17,818 shares of common stock withheld by the company on July 1, 2026, to cover tax liabilities associated with the vesting of time-based restricted stock units. The shares were withheld at a price of $7.29 per share across four separate transactions totaling 7,183, 3,553, 4,158, and 2,924 shares respectively. Following these transactions, Fitzgerald's ownership decreased to 550,464 shares, which includes 1,073 shares acquired through the company's Employee Stock Purchase Plan. The filing emphasizes that these were not discretionary sales but mandatory tax withholding transactions required by the company. The filing was signed on July 6, 2026, by Michelle Webb as attorney-in-fact.