ACCELERANT HOLDINGS CLASS A (ARX) — insider trading
Financials · NYSE
ACCELERANT HOLDINGS CLASS A (ARX) has 31 reported SEC Form 4 insider transactions in our data, including 24 open-market sales among the most recent 31 (latest 2026-08-21).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-21 | Meriwether Karen Sue | Director | Open-market sale | 542 | $19.62 | $10.6K | Form 4 |
| 2026-08-13 | Hasley Nancy | Director | Open-market sale | 20,489 | $19.56 | $400.8K | Form 4 |
| 2026-08-11 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 89,219 | $12.41 | $1.11M | Form 4 |
| 2026-08-10 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 63,616 | $12.07 | $767.7K | Form 4 |
| 2026-08-10 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $12.09 | $967.1K | Form 4 |
| 2026-08-03 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $12.06 | $964.5K | Form 4 |
| 2026-07-28 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 104,647 | $14.56 | $1.52M | Form 4 |
| 2026-07-27 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 110,467 | $14.63 | $1.62M | Form 4 |
| 2026-07-27 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 15,223 | $14.45 | $220.0K | Form 4 |
| 2026-07-27 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $14.63 | $1.17M | Form 4 |
| 2026-07-27 | Sternberg Matthew David | Officer (COO, Risk Exchange) | Open-market sale | 17,568 | $14.64 | $257.2K | Form 4 |
| 2026-07-23 | Sternberg Matthew David | Officer (COO, Risk Exchange) | Shares withheld for taxes / exercise cost | 3,910 | $13.77 | $53.8K | Form 4 |
| 2026-07-20 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $13.51 | $1.08M | Form 4 |
| 2026-07-17 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 14,777 | $14.30 | $211.3K | Form 4 |
| 2026-07-15 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 82,767 | $12.71 | $1.05M | Form 4 |
| 2026-07-14 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 83,119 | $12.84 | $1.07M | Form 4 |
| 2026-07-13 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $13.18 | $1.05M | Form 4 |
| 2026-07-06 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $13.33 | $1.07M | Form 4 |
| 2026-06-29 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $12.87 | $1.03M | Form 4 |
| 2026-06-26 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 73,500 | $13.18 | $968.9K | Form 4 |
| 2026-06-25 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 73,500 | $13.06 | $959.8K | Form 4 |
| 2026-06-23 | RADKE JEFFREY L | Director, Officer (Co-Founder, CEO), 10% owner | Open-market sale | 80,000 | $13.11 | $1.05M | Form 4 |
| 2026-06-23 | Hasley Nancy | Director | Open-market sale | 35,000 | $13.11 | $458.9K | Form 4 |
| 2026-06-23 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 76,464 | $13.11 | $1.00M | Form 4 |
| 2026-06-22 | ONeill Francis James | Officer (Co-Founder, Chief U/W Officer) | Open-market sale | 70,536 | $13.21 | $931.6K | Form 4 |
| 2026-05-13 | Little Paul Christopher | Director | Grant / award / vesting | 11,658 | — | $0 | Form 4 |
| 2026-05-13 | Hasley Nancy | Director | Grant / award / vesting | 11,658 | — | $0 | Form 4 |
| 2026-05-13 | Meriwether Karen Sue | Director | Grant / award / vesting | 11,658 | — | $0 | Form 4 |
| 2026-05-13 | Talach David George Paul | Director | Grant / award / vesting | 23,316 | — | $0 | Form 4 |
| 2026-05-13 | Wainwright Simon | Director | Grant / award / vesting | 23,316 | — | $0 | Form 4 |
| 2026-05-13 | Sternberg Matthew David | Officer (COO, Risk Exchange) | Grant / award / vesting | 279,329 | — | $0 | Form 4 |
Ask the chat about ARX's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: ACCELERANT HOLDINGS CLASS A (ARX).
Last updated 2026-08-21 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.