Michael Waterman - 01 Oct 2025 Form 4 Insider Report for ACV Auctions Inc. (ACVA)

Role: Chief Sales Officer
Signature: /s/ Michelle Webb, Attorney-in-Fact
Issuer symbol: ACVA
Transactions as of: 01 Oct 2025
Transactions value $: -$128,322
Form type: 4
Filing time: 03 Oct 2025, 16:12:37 UTC
Previous filing: 09 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Waterman Michael	Chief Sales Officer	C/O ACV AUCTIONS INC., 640 ELLICOTT ST., SUITE 321, BUFFALO	/s/ Michelle Webb, Attorney-in-Fact	03 Oct 2025	0001851495

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACVA	Common Stock	Tax liability	-$49,534	-4,919	-1.3%	$10.07	375,038	01 Oct 2025	Direct	F1
transaction	ACVA	Common Stock	Tax liability	-$34,832	-3,459	-0.92%	$10.07	371,579	01 Oct 2025	Direct	F1
transaction	ACVA	Common Stock	Tax liability	-$43,955	-4,365	-1.2%	$10.07	367,214	01 Oct 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares were withheld by the Issuer to cover the tax liability upon the vesting of a time-based restricted stock unit previously granted, and does not represent a discretionary sale by the reporting person.