ACV Auctions Inc

Our Section 16 officers (as defined in Rule 16a-1 under the Exchange Act) may from time to time enter into plans for the purchase or sale of ACV stock that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act.

During the quarter ended June 30, 2024, the following Section 16 officers adopted, modified, or terminated “Rule 10b5-1 trading arrangements” (as defined in Item 408 under Regulation S-K of the Exchange Act):

•On June 14, 2024, George Chamoun, ACV's Chief Executive Officer, adopted a trading plan. Mr. Chamoun's trading plan provides for the sale of up to 700,000 shares. The first trade will not occur until September 17, 2024, at the earliest. Mr. Chamoun's trading plan is scheduled to terminate on March 20, 2025.

•On May 20, 2024, Leanne Fitzgerald, ACV's Chief Legal Officer adopted a trading plan. Ms. Fitzgerald's trading plan provides for the sale of up to 73,167 shares. The first trade will not occur until August 20, 2024, at the earliest. Ms. Fitzgerald's trading plan is scheduled to terminate on February 27, 2025.

•On May 24, 2024, Vikas Mehta, ACV's Chief Operating Officer adopted a trading plan. Mr. Mehta's trading plan provides for the sale of up to 308,647 shares. The first trade will not occur until August 23, 2024, at the earliest. Mr. Mehta's trading plan is scheduled to terminate on February 27, 2025.

The Rule 10b5-1 trading arrangements described above were adopted and precleared in accordance with ACV’s Insider Trading Policy and actual sale transactions made pursuant to such trading arrangements will be disclosed publicly in future Section 16 filings with the SEC. Other than disclosed above, no other officer adopted, modified orterminated a Rule 10b5-1 trading arrangement or “non-Rule 10b5-1 trading arrangement” (as defined in Item 408 of Regulation S-K) during the three months ended June 30, 2024.