SEC ownership of ACV Auctions Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001637873.
- CIK
- 0001637873
- Symbol
- ACVA on NYSE
- Location
- Buffalo, NY
- Parsed ownership evidence
- 13D/G, 13F, and 3/4/5
- Lead holder
- Atreides Management, LP
- 13D/G signal
- Atreides Management, LP
- Latest evidence date
- 27 May 2026
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.
Lead holder
Atreides Management, LP
13D/G signal
Atreides Management, LP
Evidence rows
50
Latest as of
27 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.6%
13D/G row: Atreides Management, LP
Showing first 8 of 50 holder rows.
Open remaining rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Atreides Management, LP |
13D/G
13F
Gavin Baker · Company
|
5.6%
|
$44,040,602
9,743,496 shares
|
-$12,101,545 | 31 Mar 2026 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13D/G
13F
Company
|
4.1%
|
$32,601,056
7,212,623 shares
|
-$17,466,573 | 31 Mar 2026 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13D/G
Massachusetts Financial Services Company
|
3.9%
|
$65,841,416
6,643,937 shares
|
$0 | 30 Sep 2025 |
| FMR LLC |
13D/G
13F
Company
|
2.7%
|
$45,306,471
4,571,793 shares
|
-$39,446,269 | 30 Sep 2025 |
| Brian Hirsch |
3/4/5
Director
|
1.1%
|
$8,437,450
1,989,965 shares
|
+$500,346 | 27 May 2026 |
| Robert P. Goodman |
3/4/5
Director
|
0.26%
|
$1,843,929
457,820 shares
|
+$5,118,609 | 27 May 2026 |
| Brian J. Radecki |
3/4/5
Director
|
0.11%
|
$456,681
187,916 shares
|
— | 27 May 2026 |
| BlackRock, Inc. |
13F
Company
|
7.5%
|
$55,689,903
13,134,411 shares
|
— | 31 Mar 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: +$102,767.
Buys
$7,364,426
Insiders: 5
Sells
$7,261,659
Insiders: 5
Net
+$102,767
Shares: +874,702
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 1,314,201
Shares: 439,499
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 24,272 | 0 | $122,574 | $0 | +$122,574 |
| 3-6 | 276,950 | 5,250 | $1,497,648 | $43,540 | +$1,454,108 |
| 6-9 | 1,012,979 | 3,500 | $5,744,205 | $33,162 | +$5,711,042 |
| 9-12 | 0 | 430,749 | $0 | $7,184,957 | -$7,184,957 |
Reporting owners
Insider holders from Forms 3/4/5
Current reporting-owner rows connected to ACV Auctions Inc.. Open the relationship link for the CIK-to-CIK filing trail.
Rows
14
Lead holder
Bessemer Venture Partners IX L.P.
Net 12M change
+$102,768
Latest report
27 May 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 | $72,395,010 | -$5,262,374 | -6.8% | Mixed | 01 Apr 2026 |
| William Zerella | Chief Financial Officer | $22,353,247 | Mixed | 01 Apr 2026 | ||
| Vikas Mehta | Chief Operating Officer | $18,073,379 | Mixed | 01 Apr 2026 | ||
| Michael Waterman | Chief Sales Officer | $13,439,029 | +$77,531 | +0.58% | Mixed | 01 Apr 2026 |
| Leanne Fitzgerald | Chief Legal Officer | $11,475,385 | Mixed | 01 Apr 2026 | ||
| Craig Eric Anderson | Ccdso | $10,536,185 | -$225,600 | -2.1% | Mixed | 01 Apr 2026 |
| Brian Hirsch | Director | $8,437,450 | +$500,346 | +6.3% | Median | 27 May 2026 |
| Robert P. Goodman | Director | $1,843,929 | +$5,118,609 | +278% | Mixed | 27 May 2026 |
| Andrew Peer | VP, Corporate Controller & CAO | $1,826,303 | -$76,703 | -4% | Mixed | 01 Apr 2026 |
| Brian J. Radecki | Director | $456,681 | Mixed | 27 May 2026 | ||
| Kirsten Castillo | Director | $282,413 | +$125,250 | +80% | Mixed | 27 May 2026 |
| Rene F. Jones | Director | $197,613 | Mixed | 27 May 2026 | ||
| Eileen A. Kamerick | Director | $158,440 | -$154,291 | -49% | Mixed | 27 May 2026 |
Recent Insider Transactions by Companies or Individuals for ACV Auctions Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Reported value | Reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||
| Craig Eric Anderson | ACVA | Common Stock | Award | 62.1% | 194,348 | 507,412 | 01 Apr 2026 | Direct | ||
| George Chamoun | ACVA | Common Stock | Tax liability | -1.13% | -33,405 | 2,919,572 | 01 Apr 2026 | Direct | ||
| Leanne Fitzgerald | ACVA | Common Stock | Tax liability | -2.82% | -16,456 | 567,209 | 01 Apr 2026 | Direct | ||
| Leanne Fitzgerald | ACVA | Common Stock | Award | 49.9% | 194,348 | 583,665 | 01 Apr 2026 | Direct | ||
| Vikas Mehta | ACVA | Common Stock | Tax liability | -2.01% | -17,189 | 840,087 | 01 Apr 2026 | Direct | ||
| Vikas Mehta | ACVA | Common Stock | Award | 53.9% | 300,300 | 857,276 | 01 Apr 2026 | Direct | ||
| Michael Waterman | ACVA | Common Stock | Tax liability | -1.52% | -12,743 | 825,428 | 01 Apr 2026 | Direct | ||
| Michael Waterman | ACVA | Common Stock | Award | 47.3% | 269,069 | 838,171 | 01 Apr 2026 | Direct | ||
| William Zerella | ACVA | Common Stock | Tax liability | -1.16% | -12,860 | 1,098,640 | 01 Apr 2026 | Direct | ||
| William Zerella | ACVA | Common Stock | Award | 33.1% | 276,276 | 1,111,500 | 01 Apr 2026 | Direct | ||
| Andrew Peer | ACVA | Common Stock | Tax liability | -3.37% | -3,409 | 97,800 | 01 Apr 2026 | Direct | ||
| Andrew Peer | ACVA | Common Stock | Award | 39.6% | 28,736 | 101,209 | 01 Apr 2026 | Direct | ||
| George Chamoun | ACVA | Common Stock | Purchase | 0.83% | $122,574 | $5.05 | 24,272 | 2,952,977 | 09 Mar 2026 | Direct |
| Michael Waterman | ACVA | Common Stock | Purchase | 60.5% | $1,000,036 | $4.66 | 214,600 | 569,102 | 26 Feb 2026 | Direct |
| George Chamoun | ACVA | Common Stock | Purchase | 0.58% | $123,312 | $7.30 | 16,892 | 2,928,705 | 09 Feb 2026 | Direct |
| George Chamoun | ACVA | Common Stock | Options Exercise | 12.1% | 313,430 | 2,911,813 | 30 Jan 2026 | Direct | ||
| George Chamoun | ACVA | Employee Stock Option (Right to Buy) | Options Exercise | -77.8% | -313,430 | 89,300 | 30 Jan 2026 | Direct | ||
| Andrew Peer | ACVA | Common Stock | Sale | -2.36% | $15,488 | $8.85 | -1,750 | 72,473 | 15 Jan 2026 | Direct |
| Andrew Peer | ACVA | Common Stock | Options Exercise | 2.41% | 1,750 | 74,223 | 15 Jan 2026 | Direct | ||
| Andrew Peer | ACVA | Employee Stock Option (Right to Buy) | Options Exercise | -5.69% | -1,750 | 29,000 | 15 Jan 2026 | Direct | ||
| George Chamoun | ACVA | Common Stock | Purchase | 0.55% | $125,860 | $8.81 | 14,286 | 2,598,383 | 12 Jan 2026 | Direct |
| Craig Eric Anderson | ACVA | Common Stock | Tax liability | -4.42% | -14,474 | 313,064 | 02 Jan 2026 | Direct | ||
| George Chamoun | ACVA | Common Stock | Tax liability | -1.32% | -34,617 | 2,584,097 | 02 Jan 2026 | Direct | ||
| Leanne Fitzgerald | ACVA | Common Stock | Tax liability | -4.33% | -17,619 | 389,317 | 02 Jan 2026 | Direct | ||
| Vikas Mehta | ACVA | Common Stock | Tax liability | -3.2% | -18,401 | 556,976 | 02 Jan 2026 | Direct | ||
| Michael Waterman | ACVA | Common Stock | Tax liability | -3.77% | -13,905 | 354,502 | 02 Jan 2026 | Direct | ||
| William Zerella | ACVA | Common Stock | Tax liability | -1.65% | -14,022 | 835,224 | 02 Jan 2026 | Direct | ||
| Andrew Peer | ACVA | Common Stock | Tax liability | -3.35% | -2,512 | 72,473 | 02 Jan 2026 | Direct | ||
| Andrew Peer | ACVA | Common Stock | Award | 35% | 19,431 | 74,985 | 01 Jan 2026 | Direct | ||
| George Chamoun | ACVA | Common Stock | Purchase | 1.2% | $248,441 | $7.97 | 31,172 | 2,618,714 | 15 Dec 2025 | Direct |
| Andrew Peer | ACVA | Common Stock | Sale | -3.05% | $14,052 | $8.03 | -1,750 | 55,554 | 15 Dec 2025 | Direct |
| Andrew Peer | ACVA | Common Stock | Options Exercise | 3.21% | 1,750 | 56,238 | 15 Dec 2025 | Direct | ||
| Andrew Peer | ACVA | Employee Stock Option (Right to Buy) | Options Exercise | -5.38% | -1,750 | 30,750 | 15 Dec 2025 | Direct | ||
| Andrew Peer | ACVA | Common Stock | Sale | -3.11% | $14,000 | $8.00 | -1,750 | 54,488 | 01 Dec 2025 | Direct |
| Andrew Peer | ACVA | Common Stock | Options Exercise | 3.21% | 1,750 | 56,238 | 01 Dec 2025 | Direct | ||
| Andrew Peer | ACVA | Employee Stock Option (Right to Buy) | Options Exercise | -25% | -1,750 | 5,250 | 01 Dec 2025 | Direct | ||
| Kirsten Castillo | ACVA | Class A Common Stock | Purchase | 14.7% | $31,350 | $6.27 | 5,000 | 39,107 | 17 Nov 2025 | Direct |
| Kirsten Castillo | ACVA | Class A Common Stock | Purchase | 78.5% | $93,900 | $6.26 | 15,000 | 34,107 | 14 Nov 2025 | Direct |
| Brian Hirsch | ACVA | Class A Common Stock | Purchase | 421.7% | $500,346 | $6.21 | 80,571 | 99,678 | 14 Nov 2025 | Direct |
| Robert P. Goodman | ACVA | Common Stock | Purchase | $5,118,609 | $5.61 | 912,408 | 912,408 | 10 Nov 2025 | See footnote | |
| Andrew Peer | ACVA | Common Stock | Sale | -3.11% | $15,470 | $8.84 | -1,750 | 54,488 | 15 Oct 2025 | Direct |
| Andrew Peer | ACVA | Common Stock | Options Exercise | 3.21% | 1,750 | 56,238 | 15 Oct 2025 | Direct |
An asterisk next to the price means the reported price is likely invalid.