ACV Auctions withholds 29,964 COO shares for taxes

ACV Auctions Inc. Chief Operating Officer Vikas Mehta had 29,964 common shares withheld by the issuer on October 1, 2026, at a reported $10.45 per share to cover tax liability upon vesting of a previously granted time-based restricted stock unit.

Rhea-AI Filing Summary

ACV Auctions Inc. Chief Operating Officer Vikas Mehta had 29,964 common shares withheld by the issuer on October 1, 2026, at a reported $10.45 per share to cover tax liability upon vesting of a previously granted time-based restricted stock unit. The footnote says this was not a discretionary sale.

Insider Trade Summary

Tax Withholding: 29,964 shares

Tax Withholding 4 txns

Insider Mehta Vikas

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	6,319	$10.45	$66K
Tax Withholding	Common Stock F1	12,776	$10.45	$134K
Tax Withholding	Common Stock F1	4,487	$10.45	$47K
Tax Withholding	Common Stock F1, F2	6,382	$10.45	$67K

Holdings After Transaction: Common Stock — 783,524 shares (Direct)

Footnotes (2)

1. 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.
2. F2. Includes 865 shares acquired pursuant to the Company's 2021 Employee Stock Purchase Plan (ESPP) for the purchase period 6/1/2026 to 9/17/2026.

Key Figures

Shares withheld, aggregate: 29,964 shares Reported price per share: $10.45 per share Shares withheld, transaction 1: 6,319 shares +3 more

6 metrics

Shares withheld, aggregate 29,964 shares Tax-liability withholding on October 1, 2026

Reported price per share $10.45 per share Withholding transactions on October 1, 2026

Shares withheld, transaction 1 6,319 shares Tax-liability withholding on October 1, 2026

Shares withheld, transaction 2 12,776 shares Tax-liability withholding on October 1, 2026

Shares withheld, transaction 3 4,487 shares Tax-liability withholding on October 1, 2026

Shares withheld, transaction 4 6,382 shares Tax-liability withholding on October 1, 2026

Key Terms

time-based restricted stock unit, vesting, Employee Stock Purchase Plan (ESPP)

3 terms

time-based restricted stock unit financial

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

vesting financial

"tax liability upon the vesting of a time-based restricted stock unit"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

Employee Stock Purchase Plan (ESPP) financial

"acquired pursuant to the Company's 2021 Employee Stock Purchase Plan (ESPP)"

FAQ

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How many ACVA shares did Vikas Mehta have withheld?

ACV Auctions Chief Operating Officer Vikas Mehta had 29,964 shares withheld on October 1, 2026, at $10.45 per share. The issuer withheld them to cover tax liability when a previously granted time-based restricted stock unit vested; the footnote says this was not a discretionary sale.

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

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Available on EDGAR 10/05/2026 - 04:17 PM Accepted by SEC EDGAR 10/05/2026 - 04:16 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^*

Mehta Vikas

(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 Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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	10/01/2026		F		6,319(1)	D	$10.45	806,304	D
Common Stock	10/01/2026		F		12,776(1)	D	$10.45	793,528	D
Common Stock	10/01/2026		F		4,487(1)	D	$10.45	789,041	D
Common Stock	10/01/2026		F		6,382(1)	D	$10.45	783,524(2)	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. 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.

2. Includes 865 shares acquired pursuant to the Company's 2021 Employee Stock Purchase Plan (ESPP) for the purchase period 6/1/2026 to 9/17/2026.

Remarks:

	/s/ Michelle Webb, Attorney-in-Fact	10/05/2026
	** 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)