ACV Auctions withholds 22,217 officer shares for taxes

The officer's shares were withheld for tax liability upon vesting of time-based restricted stock units, rather than sold as a discretionary transaction.

Rhea-AI Filing Summary

ACV Auctions Inc. officer Craig Eric Anderson, identified as CCDSO, reported four direct tax-withholding dispositions of 22,217 common shares on October 1, 2026, at $10.45 per share. The issuer withheld the shares to cover tax liability upon vesting of previously granted time-based restricted stock units; this was not a discretionary sale. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Tax Withholding: 22,217 shares

Tax Withholding 4 txns

Insider Anderson Craig Eric

Role CCDSO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	5,185	$10.45	$54K
Tax Withholding	Common Stock F1	3,645	$10.45	$38K
Tax Withholding	Common Stock F1	4,431	$10.45	$46K
Tax Withholding	Common Stock F1, F2	8,956	$10.45	$94K

Holdings After Transaction: Common Stock — 453,082 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: 22,217 shares Transaction count: 4 transactions Reported per-share value: $10.45 per share +4 more

7 metrics

Shares withheld 22,217 shares Four tax-withholding transactions on October 1, 2026

Transaction count 4 transactions October 1, 2026

Reported per-share value $10.45 per share Each reported transaction on October 1, 2026

Shares in first transaction 5,185 shares October 1, 2026

Shares in second transaction 3,645 shares October 1, 2026

Shares in third transaction 4,431 shares October 1, 2026

Shares in fourth transaction 8,956 shares October 1, 2026

Key Terms

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

3 terms

time-based restricted stock unit financial

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

tax liability financial

"withheld by the Issuer to cover the tax liability"

Employee Stock Purchase Plan (ESPP) financial

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

FAQ

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

How many ACVA shares did officer Craig Eric Anderson have withheld?

Craig Eric Anderson, an ACV Auctions Inc. officer, had 22,217 common shares withheld across four transactions on October 1, 2026, at $10.45 per share. The issuer withheld the shares for tax liability upon vesting of previously granted time-based restricted stock units. The footnote says this was not a discretionary sale, and no Rule 10b5-1 plan is reported.

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

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Available on EDGAR 10/05/2026 - 04:31 PM Accepted by SEC EDGAR 10/05/2026 - 04:31 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^*

Anderson Craig Eric

(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)
	CCDSO

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		5,185(1)	D	$10.45	469,249	D
Common Stock	10/01/2026		F		3,645(1)	D	$10.45	465,604	D
Common Stock	10/01/2026		F		4,431(1)	D	$10.45	461,173	D
Common Stock	10/01/2026		F		8,956(1)	D	$10.45	453,082(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)