15 insiders reported 66 Form 4 transactions for Accelerant Holdings (ARX) over the past 18 months (most recent 2026-07-07). Recent activity: RADKE JEFFREY L (Co-Founder, CEO) Sell 80,000 shares, RADKE JEFFREY L (Co-Founder, CEO) Sell 80,000 shares, RADKE JEFFREY L (Co-Founder, CEO) Sell 80,000 shares, Hasley Nancy (Director) Sell 35,000 shares, ONeill Francis James (Co-Founder, Chief U/W Officer) Sell 70,536 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-07 | RADKE JEFFREY L | Co-Founder, CEO | Sell | 80,000 | $1.1M |
| 2026-06-30 | RADKE JEFFREY L | Co-Founder, CEO | Sell | 80,000 | $1.0M |
| 2026-06-25 | RADKE JEFFREY L | Co-Founder, CEO | Sell | 80,000 | $1.0M |
| 2026-06-25 | Hasley Nancy | Director | Sell | 35,000 | $458,948 |
| 2026-06-24 | ONeill Francis James | Co-Founder, Chief U/W Officer | Sell | 70,536 | $931,583 |
| 2026-06-24 | ONeill Francis James | Co-Founder, Chief U/W Officer | Sell | 76,464 | $1.0M |
| 2026-05-15 | Wainwright Simon | Director | Buy | 23,316 | $0 |
| 2026-05-15 | Sternberg Matthew David | COO, Risk Exchange | Buy | 279,329 | $0 |
| 2026-05-15 | Meriwether Karen Sue | Director | Buy | 11,658 | $0 |
| 2026-05-15 | Little Paul Christopher | Director | Buy | 11,658 | $0 |
| 2026-05-15 | Hasley Nancy | Director | Buy | 11,658 | $0 |
| 2026-05-15 | Talach David George Paul | Director | Buy | 23,316 | $0 |
| 2026-03-24 | Green Jay Michael | Chief Financial Officer | Sell | 50,000 | $638,500 |
| 2026-03-20 | Lee-Smith Christopher | Co-Founder, Head of Distrib. | Buy | 128,644 | $0 |
| 2026-03-20 | ONeill Francis James | Co-Founder, Chief U/W Officer | Buy | 128,644 | $0 |
| 2026-03-20 | RADKE JEFFREY L | Co-Founder, CEO | Buy | 300,171 | $0 |
| 2026-03-20 | Sternberg Matthew David | COO, Risk Exchange | Buy | 180,667 | $0 |
| 2026-03-18 | Green Jay Michael | Chief Financial Officer | Sell | 28,625 | $332,909 |
| 2026-02-04 | Green Jay Michael | Chief Financial Officer | Sell | 200,637 | $2.6M |
| 2025-12-17 | Lee-Smith Christopher | Co-Founder, Head of Distrib. | Buy | 14,700 | $197,274 |
| 2025-12-09 | Meriwether Karen Sue | Director | Buy | 542 | $7,951 |
| 2025-11-20 | Gaynor Samuel | Director | Buy | 7,500 | $100,800 |
| 2025-11-20 | ONeill Francis James | Co-Founder, Chief U/W Officer | Buy | 38,000 | $506,920 |
| 2025-11-19 | Sternberg Matthew David | COO, Risk Exchange | Buy | 5,700 | $74,670 |
| 2025-11-18 | RADKE JEFFREY L | Co-Founder, CEO | Buy | 74,110 | $999,003 |
Source: SEC Form 4 filings · as of 2026-07-07