🕵️ Accelerant Holdings ($ARX)
SEC insider & ownership activity, last 12 months · CIK 1997350 · every row links its SEC filing
Over the last 12 months insiders sold $17.4M against $1.9M of open-market buying. Oneill Francis James sold $9.1M through a 10b5-1 trading plan in 8 lots (Nov–Jul). 2 planned sales are pending, the largest $1.0M (Jeffrey L. Radke). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
6 buyers, $1.9M (6 lots) · 5 sellers, $17.4M (19 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Oneill Francis James | 1 | $507K | 8 | $9.1M | Jul 28, 2026 |
| Jeffrey L. Radke | 1 | $999K | 8 | $6.9M | Jul 27, 2026 |
| Jay Green | 0 | – | 1 | $638K | Mar 23, 2026 |
| Nancy Hasley | 0 | – | 1 | $459K | Jun 23, 2026 |
| Sternberg Matthew David | 1 | $75K | 1 | $257K | Jul 27, 2026 |
| Lee-Smith Christopher | 1 | $197K | 0 | – | Nov 19, 2025 |
| Gaynor Samuel | 1 | $101K | 0 | – | Nov 19, 2025 |
| Meriwether Karen Sue | 1 | $8K | 0 | – | Dec 8, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| ACP Insurance Management, LLC | 44.2% | 13G | Nov 14, 2025 | filing ↗ | |
| Schwartz Keoni Andrew | 44.2% | 13G | Nov 14, 2025 | filing ↗ | |
| ACP Accelerant Holdings, L.P. | 42.9% | 13G | Nov 14, 2025 | filing ↗ | |
| Jeffrey L. Radke | 29.9% | 13G | Nov 14, 2025 | filing ↗ | |
| Lee-Smith Christopher | 17.4% | 13G | Nov 14, 2025 | filing ↗ | |
| Oneill Francis James | 7.0% | 13G | Nov 14, 2025 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Jeffrey L. Radke | $1.4M | Jul 27, 2026 | filing ↗ |
| Matthew Sternberg | $250K | Jul 27, 2026 | filing ↗ |
| Jeffrey L. Radke | $425K | Jul 24, 2026 | filing ↗ |
| Jeffrey L. Radke | $1.1M | Jul 20, 2026 | filing ↗ |
| Jeffrey L. Radke | $209K | Jul 17, 2026 | filing ↗ |
| Francis James O'Neill | $4.8M | Jul 14, 2026 | filing ↗ |
| Jeffrey L. Radke | $1.0M | Jul 13, 2026 | filing ↗ |
| Jeffrey L. Radke | $1.1M | Jul 6, 2026 | filing ↗ |
| Jeffrey L. Radke | $1.0M | Jun 29, 2026 | filing ↗ |
| Francis James O'Neill | $2.9M | Jun 23, 2026 | filing ↗ |
| Jeffrey L. Radke | $1.0M | Jun 23, 2026 | filing ↗ |
| Nancy Hasley | $451K | Jun 23, 2026 | filing ↗ |
| Francis James O'Neill | $947K | Jun 22, 2026 | filing ↗ |
| Jay Green | $2.8M | May 18, 2026 | filing ↗ |
| Jay Green | $648K | Mar 23, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | May 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 29, 2026 | filing ↗ |
| Earnings (2.02) | May 13, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 13, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | Mar 13, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 13, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 13, 2026 | filing ↗ |
| Other events (8.01) | Mar 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 13, 2026 | filing ↗ |
| Other events (8.01) | Feb 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 27, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Earnings (2.02) | Nov 12, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 12, 2025 | filing ↗ |
| Earnings (2.02) | Aug 28, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 28, 2025 | filing ↗ |