Accelerant Holdings
ARX- Exchange
- NYSE
- Industry
- Insurance Agents, Brokers & Service
- SEC CIK
- 0001997350
In the last 90 days, Accelerant Holdings insiders filed 0 open-market purchases and 14 sales; 116 institutions reported holding it in 13F filings for Q2 2026, worth $761.1M in total; Tiger Global Management is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Accelerant Holdings insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 14 filings
- 5 insiders, $17.5M in total
- Insiders trading
- 5
- Net value
- −$17.5M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Accelerant Holdings, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Meriwether Karen Sue | Director | 20,868 | Aug 25, 2026 | 3 |
| Hasley Nancy | Director | 1,341,834 | Aug 14, 2026 | 3 |
| ONeill Francis James | Co-Founder, Chief U/W Officer | 6,369,290Indirect | Aug 12, 2026 | 7 |
| Radke Jeffrey L | Co-Founder, CEO | 27,591,939Indirect | Aug 11, 2026 | 10 |
| Sternberg Matthew David | COO, Risk Exchange | 596,482 | Jul 27, 2026 | 4 |
| Wainwright Simon | Director | 23,316 | May 15, 2026 | 1 |
| Little Paul Christopher | Director | 20,868 | May 15, 2026 | 1 |
| Talach David George Paul | Director | 23,316 | May 15, 2026 | 1 |
| Green Jay Michael | Chief Financial Officer | 1,175,589 | Mar 24, 2026 | 3 |
| Lee-Smith Christopher | Co-Founder, Head of Distrib. | 17,784,023 | Mar 20, 2026 | 2 |
| Gaynor Samuel | Director | 7,500 | Nov 20, 2025 | 1 |
| Schwartz Keoni Andrew | Director, 10% Owner | 0Indirect | Jul 29, 2025 | 0 |
| ACP Accelerant Holdings, L.P. | 10% Owner | 0Indirect | Jul 29, 2025 | 0 |
| ACP Insurance Management, LLC | 10% Owner | 0Indirect | Jul 29, 2025 | 0 |
| Harrington Wendy Liisa | Director | 23,315 | Jul 29, 2025 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 25, 2026 (view filing)7:01 PM ET | Aug 21 | 4 days | Meriwether Karen SueDirector | SSaleClass A Common Shares | −542 | $19.62 | −$10.6K | −2.5%20.9K after | |
| Aug 14, 2026 (view filing)4:34 PM ET | Aug 13 | 1 day | Hasley NancyDirector | SSaleClass A Common Shares | −20.5K | $19.56 | −$400.8K | −1.5%1.34M after | 10b5-1 |
| Aug 12, 2026 (view filing)4:31 PM ET | Aug 10-11 | 2 days | ONeill Francis JamesCo-Founder, Chief U/W Officer | SSaleClass A Common Shares | −152.8K | $12.27 | −$1.87M | −2.3%6.37M after | 2 lots10b5-1 |
| Aug 11, 2026 (view filing)5:25 PM ET | Aug 10 | 1 day | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −80.0K | $12.09 | −$967.1K | −0.3%27.6M after | 10b5-1 |
| Aug 4, 2026 (view filing)8:18 PM ET | Aug 3 | 1 day | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −80.0K | $12.06 | −$964.5K | −0.3%27.7M after | 10b5-1 |
| Jul 29, 2026 (view filing)6:25 PM ET | Jul 27-28 | 2 days | ONeill Francis JamesCo-Founder, Chief U/W Officer | SSaleClass A Common Shares | −215.1K | $14.60 | −$3.14M | −3.2%6.52M after | 2 lots10b5-1 |
| Jul 28, 2026 (view filing)9:25 PM ET | Jul 27 | 1 day | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −95.2K | $14.60 | −$1.39M | −0.3%27.8M after | 2 lots10b5-1 |
| Jul 27, 2026 (view filing)9:38 PM ET | Jul 27 | Same day | Sternberg Matthew DavidCOO, Risk Exchange | SSaleClass A Common Shares | −17.6K | $14.64 | −$257.2K | −2.9%596.5K after | 10b5-1 |
| Jul 20, 2026 (view filing)8:52 PM ET | Jul 17-20 | 3 days | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −94.8K | $13.63 | −$1.29M | −0.3%27.8M after | 2 lots10b5-1 |
| Jul 16, 2026 (view filing)8:27 PM ET | Jul 14-15 | 2 days | ONeill Francis JamesCo-Founder, Chief U/W Officer | SSaleClass A Common Shares | −165.9K | $12.78 | −$2.12M | −2.4%6.74M after | 2 lots10b5-1 |
| Jul 14, 2026 (view filing)6:34 PM ET | Jul 13 | 1 day | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −80.0K | $13.18 | −$1.05M | −0.3%27.9M after | 10b5-1 |
| Jul 7, 2026 (view filing)8:12 PM ET | Jul 6 | 1 day | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −80.0K | $13.33 | −$1.07M | −0.3%28.0M after | 10b5-1 |
| Jun 30, 2026 (view filing) | Jun 29 | 1 day | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −80.0K | $12.87 | −$1.03M | −0.3%28.1M after | 10b5-1 |
| Jun 29, 2026 (view filing) | Jun 25-26 | 4 days | ONeill Francis JamesCo-Founder, Chief U/W Officer | SSaleClass A Common Shares | −147.0K | $13.12 | −$1.93M | −2.1%6.90M after | 2 lots10b5-1 |
| Jun 25, 2026 (view filing) | Jun 23 | 2 days | Hasley NancyDirector | SSaleClass A Common Shares | −35.0K | $13.11 | −$458.9K | −2.5%1.36M after | 10b5-1 |
| Jun 25, 2026 (view filing) | Jun 23 | 2 days | Radke Jeffrey LCo-Founder, CEO | SSaleClass A Common Shares | −80.0K | $13.11 | −$1.05M | −0.3%28.2M after | 10b5-1 |
| Jun 24, 2026 (view filing) | Jun 22-23 | 2 days | ONeill Francis JamesCo-Founder, Chief U/W Officer | SSaleClass A Common Shares | −147.0K | $13.16 | −$1.93M | −2.0%7.05M after | 2 lots10b5-1 |
| Mar 24, 2026 (view filing) | Mar 23 | 1 day | Green Jay MichaelChief Financial Officer | SSaleClass A Common Shares | −50.0K | $12.77 | −$638.5K | −4.1%1.18M after | 10b5-1 |
| Dec 17, 2025 (view filing) | Nov 19 | 28 daysLate | Lee-Smith ChristopherCo-Founder, Head of Distrib. | PPurchaseClass A Common Shares | +14.7K | $13.42 | +$197.3K | +0.1%17.7M after | |
| Dec 9, 2025 (view filing) | Dec 8 | 1 day | Meriwether Karen SueDirector | PPurchaseClass A Common Shares | +542 | $14.67 | +$7.95K | +5.9%9.75K after | |
| Nov 20, 2025 (view filing) | Nov 19 | 1 day | Gaynor SamuelDirector | PPurchaseClass A Common Shares | +7.50K | $13.44 | +$100.8K | New position7.50K after | |
| Nov 20, 2025 (view filing) | Nov 18 | 2 days | ONeill Francis JamesCo-Founder, Chief U/W Officer | PPurchaseClass A Common Shares | +38.0K | $13.34 | +$506.9K | +0.5%7.24M after | |
| Nov 19, 2025 (view filing) | Nov 17 | 2 days | Sternberg Matthew DavidCOO, Risk Exchange | PPurchaseClass A Common Shares | +5.70K | $13.10 | +$74.7K | +3.7%158.0K after | |
| Nov 18, 2025 (view filing) | Nov 14 | 4 days | Radke Jeffrey LCo-Founder, CEO | PPurchaseClass A Common Shares | +74.1K | $13.48 | +$999.0K | +0.3%28.3M after | |
| Jul 29, 2025 (view filing)8:36 PM ET | Jul 25 | 4 days | Schwartz Keoni Andrew and 2 othersDirector, 10% Owner | SSaleClass A Common Shares | −11.6M | $21.00 | −$243.5M | −100.0%0 after | 4 lots |
| Jul 29, 2025 (view filing) | Jul 25 | 4 days | Hasley NancyGeneral Counsel | PPurchaseClass A Common Shares | +500 | $21.00 | +$10.5K | New position500 after |