ACV Auctions CSO granted 269K RSUs

ACV Auctions Inc. Chief Sales Officer Michael Waterman received a grant of 269,069 shares of Common Stock in the form of a restricted stock unit (RSU) award on April 1, 2026.

Rhea-AI Filing Summary

ACV Auctions Inc. Chief Sales Officer Michael Waterman received a grant of 269,069 shares of Common Stock in the form of a restricted stock unit (RSU) award on April 1, 2026. The RSUs will vest in twelve substantially equal quarterly installments beginning on July 1, 2026, as long as he remains in continuous service.

On the same date, a total of 12,743 shares were withheld at $4.27 per share to cover tax liabilities upon the vesting of a previously granted time-based RSU. This withholding is described as non-discretionary and not an open-market sale. After these transactions, he directly holds 825,428 shares of Common Stock.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Waterman Michael

Role Chief Sales Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	269,069	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	4,919	$4.27	$21K
Exercise Price or Tax Liability	Common Stock	3,459	$4.27	$15K
Exercise Price or Tax Liability	Common Stock	4,365	$4.27	$19K

Holdings After Transaction: Common Stock — 825,428 shares (Direct)

Footnotes (2)

1. F1. Represents a restricted stock unit ("RSU") award. The RSUs will vest in twelve (12) substantially equal quarterly installments beginning July 1, 2026, subject to the Reporting Person's continuous service through each such date.
2. F2. 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.

Key Figures

RSU grant size: 269,069 shares Tax-withheld shares: 12,743 shares Withholding price: $4.27 per share +3 more

6 metrics

RSU grant size 269,069 shares Restricted stock unit award on April 1, 2026

Tax-withheld shares 12,743 shares Total shares withheld for tax liabilities on prior RSU vesting

Withholding price $4.27 per share Price used for tax-withholding dispositions

Post-transaction holdings 825,428 shares Direct Common Stock ownership after transactions

Tax-withholding entries 3 transactions Code F dispositions for tax liabilities

RSU vesting schedule 12 quarterly installments Vesting begins July 1, 2026, subject to continuous service

Key Terms

restricted stock unit ("RSU") award, substantially equal quarterly installments, time-based restricted stock unit, tax liability, +1 more

5 terms

restricted stock unit ("RSU") award financial

"Represents a restricted stock unit ("RSU") award. The RSUs will vest in twelve"

substantially equal quarterly installments financial

"The RSUs will vest in twelve (12) substantially equal quarterly installments"

time-based restricted stock unit financial

"upon the vesting of a time-based restricted stock unit previously granted"

tax liability financial

"shares were withheld by the Issuer to cover the tax liability upon the vesting"

non-derivative financial

"transaction_type": "non-derivative""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did ACV Auctions (ACVA) Chief Sales Officer report?

ACV Auctions Chief Sales Officer Michael Waterman reported an RSU grant of 269,069 Common Stock shares. In addition, shares were withheld to cover taxes on a prior RSU vesting, and his direct holdings after these transactions total 825,428 shares.

How will Michael Waterman’s new RSU award at ACV Auctions (ACVA) vest?

The 269,069-share RSU award will vest in twelve substantially equal quarterly installments starting July 1, 2026. Each vesting date requires Michael Waterman to remain in continuous service with ACV Auctions through the applicable vesting date for shares to be delivered.

Were any ACV Auctions (ACVA) shares sold on the open market in this Form 4?

No open-market sales are described. The filing states certain shares were withheld by ACV Auctions to cover tax liabilities upon vesting of a prior time-based RSU, explicitly noting this withholding does not represent a discretionary sale by the reporting person.

How many ACV Auctions (ACVA) shares were withheld for taxes in this filing?

A total of 12,743 Common Stock shares were withheld to cover tax liabilities associated with a previously granted time-based RSU vesting. These tax-withholding transactions occurred at $4.27 per share and are categorized as non-discretionary dispositions to satisfy tax obligations.

What is Michael Waterman’s ACV Auctions (ACVA) share ownership after these transactions?

Following the RSU grant and tax-withholding entries, Michael Waterman directly owns 825,428 shares of ACV Auctions Common Stock. This figure reflects his direct holdings after the non-discretionary share withholdings related to tax obligations on a prior RSU vesting.

What role does Michael Waterman hold at ACV Auctions (ACVA) in this Form 4?

In this Form 4, Michael Waterman is identified as an officer of ACV Auctions, serving as Chief Sales Officer. The reported transactions relate to his equity compensation and associated tax withholding on restricted stock unit awards granted by the company.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/03/2026 - 04:19 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Waterman Michael

(Last) (First) (Middle)

C/O ACV AUCTIONS INC.

640 ELLICOTT ST., SUITE 321

(Street)

BUFFALO NEW YORK 14203

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ACV Auctions Inc. [ ACVA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Sales Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/01/2026		A		269,069(1)	A	$0	838,171	D
Common Stock	04/01/2026		F		4,919(2)	D	$4.27	833,252	D
Common Stock	04/01/2026		F		3,459(2)	D	$4.27	829,793	D
Common Stock	04/01/2026		F		4,365(2)	D	$4.27	825,428	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents a restricted stock unit ("RSU") award. The RSUs will vest in twelve (12) substantially equal quarterly installments beginning July 1, 2026, subject to the Reporting Person's continuous service through each such date.

2. 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.

Remarks:

	/s/ Michelle Webb, Attorney-in-Fact	04/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)