SEC ownership of ACV Auctions Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001637873.

Comparable stake leader

Atreides Management, LP

Disclosed value leader

Bessemer Venture Partners IX L.P.

Comparable rows

5/50

Latest evidence

16 Oct 2026

Top shareholders Insider holders Latest transactions
Public ticker
ACVA on NYSE
Parsed ownership sources
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
Atreides Management, LP
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
5 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Atreides Management, LP
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
16 Oct 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001637873
Issuer location
Buffalo, NY

Ownership snapshot

Top shareholders of ACV Auctions Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Atreides Management, LP
Disclosed value leader
Bessemer Venture Partners...
Comparable rows
5/50
Latest evidence
16 Oct 2026
13F 13D/G 3/4/5 Lead comparable stake: 5.7% 45 rows are not safely comparable across share classes. 13D/G row: Atreides Management, LP Showing 1-8 of 50 holder rows.

Quick read

Atreides Management, LP leads the comparable SEC ownership view at 5.7%.

5 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Atreides Management, LP's linked filing trail.
Comparable ownership Top 5
Atreides Management, LP 5.7%
VANGUARD CAPITAL MANAGEMENT LLC 5%
WILLIAM BLAIR INVESTMENT MANAGEME... 4.1%
MASSACHUSETTS FINANCIAL SERVICES ... 3.9%
FMR LLC 2.7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Atreides Management, LP
13F 13D/G
Company · Gavin Baker
13F 13D/G
5.7%
Reported 13D/G · 30 Jun 2026
$71,204,288
9,903,239 shares
 — 30 Jun 2026
VANGUARD CAPITAL MANAGEMENT LLC
13D/G 13F
Vanguard Capital Management · Company
13D/G 13F
5%
Reported 13D/G · 30 Jun 2026
$58,457,514
8,764,245 shares
 $0 30 Jun 2026
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
13D/G
13D/G
4.1%
Reported 13D/G · 31 Mar 2026
$32,601,056
7,212,623 shares
 -$17,466,573 31 Mar 2026
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13D/G
Massachusetts Financial Services Company
13D/G
3.9%
Reported 13D/G · 30 Sep 2025
$65,841,416
6,643,937 shares
 $0 30 Sep 2025
FMR LLC
13D/G 13F
Company
13D/G 13F
2.7%
Reported 13D/G · 30 Sep 2025
$45,306,471
4,571,793 shares
 -$39,446,269 30 Sep 2025
Bessemer Venture Partners IX L.P.
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
$148,170,524
10,690,514 shares
 — 06 Dec 2023
BlackRock, Inc.
13F
Company
13F
—
denominator unverified
$101,182,583
14,072,682 shares
 — 30 Jun 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
Company
13F
—
denominator unverified
$53,041,428
7,377,111 shares
 — 30 Jun 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to buying over the last 12 months. Net value: +$7,320,886.

Buys
$7,364,426
Insiders: 5
Sells
$43,540
Insiders: 1
Net
+$7,320,886
Shares: +1,308,951
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 1,314,201 Shares: 5,250
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 255,764 0 $1,245,921 $0 +$1,245,921
9-12 1,058,437 5,250 $6,118,505 $43,540 +$6,074,965

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-15 of 15 reporting-owner rows connected to ACV Auctions Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
15
Largest Forms 3/4/5 holder
Bessemer Venture Partners IX L.P.
Net 12M change
+$7.32MFull value: +$7,320,887 · USD · 12-month change
Latest report
16 Oct 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Bessemer Venture Partners IX L.P. 10%+ Owner $148,170,524 Mixed 06 Dec 2023
George Chamoun Chief Executive Officer, Director $44,968,271 +$620,186 +1.4% Mixed 16 Oct 2026
William Zerella Chief Financial Officer $21,286,040 Mixed 01 Jul 2026
Vikas Mehta Chief Operating Officer $11,335,882 Mixed 16 Oct 2026
Brian Hirsch Director $8,437,450 +$500,346 +6.3% Mixed 16 Oct 2026
Leanne Fitzgerald Chief Legal Officer $6,926,369 Mixed 16 Oct 2026
Michael Waterman Chief Sales Officer $6,819,097 +$1,000,036 +17% Mixed 16 Oct 2026
Craig Eric Anderson Ccdso $6,573,094 Mixed 16 Oct 2026
Brian J. Radecki Director $1,357,119 Mixed 16 Oct 2026
Eileen A. Kamerick Director $1,333,394 Mixed 16 Oct 2026
Andrew Peer VP, Corporate Controller & CAO $1,041,947 -$43,540 -4% Mixed 16 Oct 2026
Kirsten Castillo Director $438,807 +$125,250 +40% Mixed 16 Oct 2026
Robert P. Goodman Director $387,991 +$5,118,609 +1319% Mixed 16 Oct 2026
Rene F. Jones Director $337,290 Mixed 16 Oct 2026
Timothy Fox Chief Financial Officer $0 Mixed 16 Oct 2026

Recent insider transactions for ACV Auctions Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Robert P. Goodman ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -932,863 0 16 Oct 2026 See footnote
Robert P. Goodman ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -421,826 0 16 Oct 2026 Direct
Michael Waterman ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -1,037,462 0 16 Oct 2026 Direct
Michael Waterman ACVA Common Stock Award 32.1% 252,279 1,037,462 16 Oct 2026 Direct
Michael Waterman ACVA Stock Option (Right to Buy) Disposed to Issuer -100% -259,835 0 16 Oct 2026 Direct
Brian J. Radecki ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -107,708 0 16 Oct 2026 Direct
Andrew Peer ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -186,478 0 16 Oct 2026 Direct
Andrew Peer ACVA Stock Option (Right to Buy) Disposed to Issuer -100% -34,250 0 16 Oct 2026 Direct
George Chamoun ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -3,828,015 0 16 Oct 2026 Direct
George Chamoun ACVA Common Stock Award 15.6% 517,594 3,828,015 16 Oct 2026 Direct
George Chamoun ACVA Stock Option (Right to Buy) Disposed to Issuer -100% -89,300 0 16 Oct 2026 Direct
Kirsten Castillo ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -66,607 0 16 Oct 2026 Direct
Kirsten Castillo ACVA Stock Option (Right to Buy) Disposed to Issuer -100% -13,417 0 16 Oct 2026 Direct
Eileen A. Kamerick ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -37,368 0 16 Oct 2026 Direct
Eileen A. Kamerick ACVA Stock Option (Right to Buy) Disposed to Issuer -100% -80,984 0 16 Oct 2026 Direct
Leanne Fitzgerald ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -711,600 0 16 Oct 2026 Direct
Leanne Fitzgerald ACVA Common Stock Award 33.4% 178,326 711,600 16 Oct 2026 Direct
Timothy Fox ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -283,641 0 16 Oct 2026 Direct
Timothy Fox ACVA Common Stock Award 27.1% 60,403 283,641 16 Oct 2026 Direct
Vikas Mehta ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -1,058,015 0 16 Oct 2026 Direct
Vikas Mehta ACVA Common Stock Award 35% 274,491 1,058,015 16 Oct 2026 Direct
Brian Hirsch ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -1,862,787 0 16 Oct 2026 See footnote
Brian Hirsch ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -127,178 0 16 Oct 2026 Direct
Rene F. Jones ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -46,607 0 16 Oct 2026 Direct
Rene F. Jones ACVA Stock Option (Right to Buy) Disposed to Issuer -100% -100,000 0 16 Oct 2026 Direct
Craig Eric Anderson ACVA Common Stock Disposition pursuant to a tender of shares in a change of control transaction -100% -631,408 0 16 Oct 2026 Direct
Craig Eric Anderson ACVA Common Stock Award 39.4% 178,326 631,408 16 Oct 2026 Direct
Craig Eric Anderson ACVA Common Stock Tax liability -4.67% -22,217 453,082 01 Oct 2026 Direct
George Chamoun ACVA Common Stock Tax liability -1.63% -54,686 3,310,421 01 Oct 2026 Direct
Leanne Fitzgerald ACVA Common Stock Tax liability -3.23% -17,818 533,274 01 Oct 2026 Direct
Timothy Fox ACVA Common Stock Tax liability -4.01% -9,320 223,238 01 Oct 2026 Direct
Vikas Mehta ACVA Common Stock Tax liability -3.68% -29,964 783,524 01 Oct 2026 Direct
Andrew Peer ACVA Common Stock Tax liability -4.41% -8,595 186,478 01 Oct 2026 Direct
Michael Waterman ACVA Common Stock Tax liability -2.67% -21,567 785,183 01 Oct 2026 Direct
Andrew Peer ACVA Common Stock Award 106.8% 100,672 194,924 11 Aug 2026 Direct
Craig Eric Anderson ACVA Common Stock Tax liability -4.47% -22,217 474,434 01 Jul 2026 Direct
George Chamoun ACVA Common Stock Tax liability -1.6% -54,686 3,365,107 01 Jul 2026 Direct
Leanne Fitzgerald ACVA Common Stock Tax liability -3.14% -17,818 550,464 01 Jul 2026 Direct
Vikas Mehta ACVA Common Stock Tax liability -3.56% -29,964 812,623 01 Jul 2026 Direct
Andrew Peer ACVA Common Stock Tax liability -4.37% -4,311 94,252 01 Jul 2026 Direct
Michael Waterman ACVA Common Stock Tax liability -2.61% -21,567 805,683 01 Jul 2026 Direct
William Zerella ACVA Common Stock Tax liability -2% -21,919 1,076,721 01 Jul 2026 Direct
Robert P. Goodman ACVA Common Stock Award 6.97% 27,500 421,826 27 May 2026 Direct
Rene F. Jones ACVA Common Stock Award 143.9% 27,500 46,607 27 May 2026 Direct
Eileen A. Kamerick ACVA Common Stock Award 278.7% 27,500 37,368 27 May 2026 Direct
Kirsten Castillo ACVA Common Stock Award 70.3% 27,500 66,607 27 May 2026 Direct
Brian Hirsch ACVA Class A Common Stock Award 27.6% 27,500 127,178 27 May 2026 Direct
Brian J. Radecki ACVA Common Stock Award 34.3% 27,500 107,708 27 May 2026 Direct
George Chamoun ACVA Common Stock Award 17.1% 500,221 3,419,793 02 Apr 2026 Direct
Craig Eric Anderson ACVA Common Stock Tax liability -2.61% -13,261 494,151 01 Apr 2026 Direct
* marks a reported price that did not pass the local price check.
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