Insider Ledger
Accelerant Holdings (ARX) insider buying and SEC filings
Accelerant Holdings · CIK 1997350
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- NYSE
- Industry (SIC)
- Insurance Agents, Brokers & Service
- State of incorporation
- E9
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$175K
Insiders who bought
2
Sold (not marked 10b5-1)
$11K
Planned sales (10b5-1)
$21.6M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 21, 2026 | Sale | Karen Sue Meriwether (Director) sold 542 shares at $19.62 ($11K). Holdings down 3% to 20,868 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 25, 2026 |
| Aug 13, 2026 | Planned (10b5-1) | Nancy Hasley (Director) sold 20,489 shares at about $19.56 ($401K), marked as a 10b5-1 plan trade. Holdings down 2% to 1,341,834 shares. | SEC filing Filed Aug 14, 2026 |
| Aug 10–11, 2026 | Planned (10b5-1) | Francis James ONeill (Co-Founder, Chief U/W Officer) sold 152,835 shares indirectly (by entity) between Aug 10 and Aug 11 at about $12.27 ($1.9M), marked as a 10b5-1 plan trade. Holdings by entity down 2% to 6,369,290 shares. | SEC filing Filed Aug 12, 2026 |
| Aug 10, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 80,000 shares indirectly (by entity) at about $12.09 ($967K), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 27,591,939 shares. | SEC filing Filed Aug 11, 2026 |
| Aug 3, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 80,000 shares indirectly (by entity) at about $12.06 ($965K), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 27,671,939 shares. | SEC filing Filed Aug 4, 2026 |
| Jul 27–28, 2026 | Planned (10b5-1) | Francis James ONeill (Co-Founder, Chief U/W Officer) sold 215,114 shares indirectly (by entity) between Jul 27 and Jul 28 at about $14.60 ($3.1M), marked as a 10b5-1 plan trade. Holdings by entity down 3% to 6,522,125 shares. | SEC filing Filed Jul 29, 2026 |
| Jul 27, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 95,223 shares indirectly (by entity) at about $14.60 ($1.4M), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 27,751,939 shares. | SEC filing Filed Jul 28, 2026 |
| Jul 27, 2026 | Planned (10b5-1) | Matthew David Sternberg (President / COO) sold 17,568 shares at about $14.64 ($257K), marked as a 10b5-1 plan trade. Holdings down 3% to 596,482 shares. | SEC filing Filed Jul 27, 2026 |
| Jul 17–20, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 94,777 shares indirectly (by entity) between Jul 17 and Jul 20 at about $13.63 ($1.3M), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 27,847,162 shares. | SEC filing Filed Jul 20, 2026 |
| Jul 14–15, 2026 | Planned (10b5-1) | Francis James ONeill (Co-Founder, Chief U/W Officer) sold 165,886 shares indirectly (by entity) between Jul 14 and Jul 15 at about $12.78 ($2.1M), marked as a 10b5-1 plan trade. Holdings by entity down 2% to 6,737,239 shares. | SEC filing Filed Jul 16, 2026 |
| Jul 13, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 80,000 shares indirectly (by entity) at about $13.18 ($1.1M), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 27,941,939 shares. | SEC filing Filed Jul 14, 2026 |
| Jul 6, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 80,000 shares indirectly (by entity) at about $13.33 ($1.1M), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 28,021,939 shares. | SEC filing Filed Jul 7, 2026 |
| Jun 29, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 80,000 shares indirectly (by entity) at about $12.87 ($1.0M), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 28,101,939 shares. | SEC filing Filed Jun 30, 2026 |
| Jun 25–26, 2026 | Planned (10b5-1) | Francis James ONeill (Co-Founder, Chief U/W Officer) sold 147,000 shares indirectly (by entity) between Jun 25 and Jun 26 at about $13.12 ($1.9M), marked as a 10b5-1 plan trade. Holdings by entity down 2% to 6,903,125 shares. | SEC filing Filed Jun 29, 2026 |
| Jun 23, 2026 | Planned (10b5-1) | Nancy Hasley (Director) sold 35,000 shares at about $13.11 ($459K), marked as a 10b5-1 plan trade. Holdings down 3% to 1,362,323 shares. | SEC filing Filed Jun 25, 2026 |
| Jun 23, 2026 | Planned (10b5-1) | Jeffrey L. Radke (CEO and Director) sold 80,000 shares indirectly (by entity) at about $13.11 ($1.0M), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 28,181,939 shares. | SEC filing Filed Jun 25, 2026 |
| Jun 22–23, 2026 | Planned (10b5-1) | Francis James ONeill (Co-Founder, Chief U/W Officer) sold 147,000 shares indirectly (by entity) between Jun 22 and Jun 23 at about $13.16 ($1.9M), marked as a 10b5-1 plan trade. Holdings by entity down 2% to 7,050,125 shares. | SEC filing Filed Jun 24, 2026 |
| Mar 23, 2026 | Planned (10b5-1) | Jay Michael Green (CFO) sold 50,000 shares at about $12.77 ($639K), marked as a 10b5-1 plan trade. Holdings down 4% to 1,175,589 shares. | SEC filing Filed Mar 24, 2026 |
| Nov 19, 2025 | Other purchase | Christopher Lee-Smith (Director and Co-Founder, Head of Distrib.) bought 14,700 Class A Common Shares at about $13.42 ($197K) in a public offering. Holdings up <1% to 17,655,379 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 17, 2025 |
| Dec 8, 2025 | Purchase (code P) | Karen Sue Meriwether (Director) bought 542 shares at $14.67 ($8K), reported as a purchase (code P). Holdings up 6% to 9,752 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 9, 2025 |
| Nov 19, 2025 | Purchase (code P) | Samuel Gaynor (Director) bought 7,500 shares at about $13.44 ($101K), reported as a purchase (code P). New position of 7,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 20, 2025 |
| Nov 18, 2025 | Other purchase | Francis James ONeill (Co-Founder, Chief U/W Officer) bought 38,000 Class A Common Shares at about $13.34 ($507K) in a public offering. Holdings up 1% to 7,235,125 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 20, 2025 |
| Nov 17, 2025 | Purchase (code P) | Matthew David Sternberg (President / COO) bought 5,700 shares at about $13.10 ($75K), reported as a purchase (code P). Holdings up 4% to 157,964 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 19, 2025 |
| Nov 14, 2025 | Other purchase | Jeffrey L. Radke (CEO and Director) bought 74,110 Class A Common Shares indirectly (by entity) at about $13.48 ($999K) in a public offering. Holdings by entity up <1% to 28,261,939 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
13 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
2 insiders bought in 30 days
$175K in purchases since Nov 17, 2025 · Purchases traded Nov 17, 2025 to Nov 19, 2025 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Matthew David Sternberg (President / COO) | $75K | Nov 17, 2025 | SEC filing |
| Samuel Gaynor (Director) | $101K | Nov 19, 2025 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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