Accelerant
Connects specialist underwriters with risk-capital partners through a data-driven insurance exchange.
$19.73
After-hours close−0.01 (−0.05%)
At close$19.74(+0.25%)
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Breakdown13F · Form 4
Institutions 25.47%55.57M sharesInsiders 26.26%57.31M sharesOther 48.27%105.32M shares
Shares outstanding 218.20M · Float 55.79M · 25.6% free float
A Form 4 total here can count shares the filer formally disclaims — an award voted by proxy, for instance — which the holder's own Schedule 13D/G excludes, so where the two disagree the schedule's smaller figure is used.
Institutions13F, as of Mar 31, 2026
108 holders · 55.57M shares · 33 new positions · 68 increased · 24 reduced · 25 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Security Benefit Life Insurance Co /KS/ | 5.87M | 2.69% | 0 | May 4, 2026 |
| Capital World Investors | 5.15M | 2.36% | −614.9K | May 13, 2026 |
| Keenan Capital, LLC | 3.99M | 1.83% | +852.9K | May 15, 2026 |
| Gilder Gagnon Howe & Co LLC | 3.74M | 1.72% | +40.3K | May 15, 2026 |
| American Century Companies Inc | 3.19M | 1.46% | +1.66M | May 15, 2026 |
| Barings LLC | 3.13M | 1.43% | 0 | May 6, 2026 |
| AllianceBernstein L.P. | 2.80M | 1.28% | −46.3K | May 15, 2026 |
| Marshall Wace, LLP | 2.27M | 1.04% | +1.93M | May 15, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| ACP Accelerant Holdings, L.P. | 42.90% | 85.98M | 13G | Nov 14, 2025 ↗ |
| Radke Jeffrey L | 29.90% | 36.75M | 13G | Nov 14, 2025 ↗ |
| Lee-Smith Christopher | 17.40% | 20.39M | 13G | Nov 14, 2025 ↗ |
| ONeill Francis James | 7.00% | 8.08M | 13G | Nov 14, 2025 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Jeffrey L. Radke | director, 10 percent owner, officer: Co-Founder, CEO | 27.93M | 12.80% | Aug 11, 2026 |
| Christopher Lee-Smith | director, officer: Co-Founder, Head of Distrib. | 17.78M | 8.15% | Mar 20, 2026 |
| Francis James ONeill | officer: Co-Founder, Chief U/W Officer | 8.08M | 3.70% | Aug 12, 2026 |
| Nancy Hasley | director | 1.34M | 0.62% | Aug 14, 2026 |
| Jay Michael Green | officer: Chief Financial Officer | 1.18M | 0.54% | Mar 24, 2026 |
| Matthew David Sternberg | officer: COO, Risk Exchange | 596.5K | 0.27% | Jul 27, 2026 |
| Linda Huber | officer: Chief Financial Officer | 214.4K | 0.10% | Apr 3, 2026 |
| Clifford Robert Jenks | officer: General Counsel | 85.8K | 0.04% | Apr 3, 2026 |
| David George Paul Talach | director | 23.3K | 0.01% | May 15, 2026 |
| Simon Wainwright | director | 23.3K | 0.01% | May 15, 2026 |
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 21, 2026 | Karen Sue Meriwetherdirector | Sale | 542 | $19.62 | 20,868 |
| Aug 13, 2026 | Nancy Hasleydirector | Sale | 20,489 | $19.56 | 1,341,834 |
| Aug 11, 2026 | Francis James ONeillofficer: Co-Founder, Chief U/W Officer | Sale | 89,219 | $12.41 | 6,369,290 |
| Aug 10, 2026 | Francis James ONeillofficer: Co-Founder, Chief U/W Officer | Sale | 63,616 | $12.07 | 6,458,509 |
| Aug 10, 2026 | Jeffrey L. Radkedirector, 10 percent owner, officer: Co-Founder, CEO | Sale | 80,000 | $12.09 | 27,591,939 |
| Aug 3, 2026 | Jeffrey L. Radkedirector, 10 percent owner, officer: Co-Founder, CEO | Sale | 80,000 | $12.06 | 27,671,939 |
| Jul 28, 2026 | Francis James ONeillofficer: Co-Founder, Chief U/W Officer | Sale | 104,647 | $14.56 | 6,522,125 |
| Jul 27, 2026 | Francis James ONeillofficer: Co-Founder, Chief U/W Officer | Sale | 110,467 | $14.63 | 6,626,772 |
| Jul 27, 2026 | Jeffrey L. Radkedirector, 10 percent owner, officer: Co-Founder, CEO | Sale · 2 lots | 95,223 | $14.60 | 27,751,939 |
| Jul 27, 2026 | Matthew David Sternbergofficer: COO, Risk Exchange | Sale | 17,568 | $14.64 | 596,482 |
CongressHouse and Senate disclosures
Not reported.