Accelerant (ARX) stock: insider trades, news & valuation
Strong buyingShare price and insider trades
Accelerant insider trading at a glance (Oct 9, 2026): in the past 12 months, 5 insiders bought $1.9M and 6 sold $21.6M of ARX stock on the open market, including a cluster buy that began Nov 14, 2025.
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ARX insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $14.5M | 17 |
| Q2 2026 | — | 0 | $6.4M | 7 |
| Q1 2026 | — | 0 | $638K | 1 |
| Q4 2025 | $1.9M | 6 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 5 Accelerant Holdings insiders reported open-market purchases totaling $1.9M, while 6 insiders reported sales totaling $21.6M. The most recent cluster buy began on Nov 14, 2025, when 5 insiders bought a combined $1.9M. 24 of 25 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ARX earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Aug 13, 2026 | -7.5% | Sold $12.0M | +43.9%S&P +0.5% | +1.3% |
| May 13, 2026 | -0.7% | None | +8.3%S&P +1.4% | -10.8% |
| Mar 18, 2026 | -1.8% | None | +4.7%S&P -1.6% | +15.7% |
| Feb 27, 2026 | -6.5% | None | +10.6%S&P -0.4% | +9.0% |
| Nov 12, 2025 | -1.3% | None | +9.7%S&P -1.6% | +13.9% |
| Aug 28, 2025 | +2.6% | None | -31.5%S&P -0.2% | -26.1% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 25SEC | Karen Sue MeriwetherDirector | Sell | 54220,868 held (−3%) | $19.62 | $11K | +0.9% | — |
| Aug 14SEC | Nancy HasleyDirector | Sell Plan | 20,4891,341,834 held (−2%) | $19.56 | $401K | +1.2% | — |
| Aug 12SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 89,2196,369,290 held (−1%) | $12.41 | $1.1M | +59.5% | — |
| Aug 12SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 63,6166,458,509 held (−1%) | $12.07 | $768K | +64.0% | — |
| Aug 11SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00027,591,939 held (−0%) | $12.09 | $967K | +63.8% | — |
| Aug 4SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00027,671,939 held (−0%) | $12.06 | $965K | +64.2% | — |
| Jul 29SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 110,4676,626,772 held (−2%) | $14.63 | $1.6M | +35.3% | — |
| Jul 29SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 104,6476,522,125 held (−2%) | $14.56 | $1.5M | +36.0% | — |
| Jul 28SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00027,767,162 held (−0%) | $14.63 | $1.2M | +35.3% | — |
| Jul 28SEC | Jeffrey L RadkeCEO | Sell Plan | 15,22327,751,939 held (−0%) | $14.45 | $220K | +37.0% | — |
| Jul 27SEC | Matthew David SternbergCOO | Sell Plan | 17,568596,482 held (−3%) | $14.64 | $257K | +35.2% | — |
| Jul 20SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00027,847,162 held (−0%) | $13.51 | $1.1M | +46.6% | — |
| Jul 20SEC | Jeffrey L RadkeCEO | Sell Plan | 14,77727,927,162 held (−0%) | $14.30 | $211K | +38.5% | — |
| Jul 16SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 83,1196,820,006 held (−1%) | $12.84 | $1.1M | +54.2% | — |
| Jul 16SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 82,7676,737,239 held (−1%) | $12.71 | $1.1M | +55.8% | — |
| Jul 14SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00027,941,939 held (−0%) | $13.18 | $1.1M | +50.2% | — |
| Jul 7SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00028,021,939 held (−0%) | $13.33 | $1.1M | +48.5% | — |
| Jun 30SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00028,101,939 held (−0%) | $12.87 | $1.0M | +53.8% | — |
| Jun 29SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 73,5006,903,125 held (−1%) | $13.18 | $969K | +50.2% | — |
| Jun 29SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 73,5006,976,625 held (−1%) | $13.06 | $960K | +51.6% | — |
| Jun 25SEC | Jeffrey L RadkeCEO | Sell Plan | 80,00028,181,939 held (−0%) | $13.11 | $1.0M | +51.0% | — |
| Jun 25SEC | Nancy HasleyDirector | Sell Plan | 35,0001,362,323 held (−3%) | $13.11 | $459K | +51.0% | — |
| Jun 24SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 76,4647,050,125 held (−1%) | $13.11 | $1.0M | +51.0% | — |
| Jun 24SEC | Francis James OneillCo-Founder, Chief U/W Officer | Sell Plan | 70,5367,126,589 held (−1%) | $13.21 | $932K | +49.9% | — |
| Mar 24SEC | Jay Michael GreenCFO | Sell Plan | 50,0001,175,589 held (−4%) | $12.77 | $638K | +55.1% | — |
| Dec 17SEC | Christopher Lee-smithCo-Founder, Head Of Distrib. | Buy | 14,70017,655,379 held (+0%) | $13.42 | $197K | +47.5% | — |
| Dec 9SEC | Karen Sue MeriwetherDirector | Buy | 5429,752 held (+6%) | $14.67 | $8K | +35.0% | — |
| Nov 20SEC | Francis James OneillCo-Founder, Chief U/W Officer | Buy | 38,0007,235,125 held (+1%) | $13.34 | $507K | +48.4% | — |
| Nov 20SEC | Samuel GaynorDirector | Buy | 7,500new position | $13.44 | $101K | +47.3% | — |
| Nov 19SEC | Matthew David SternbergCOO | Buy | 5,700157,964 held (+4%) | $13.10 | $75K | +51.1% | — |
| Nov 18SEC | Jeffrey L RadkeCEO | Buy | 74,11028,261,939 held (+0%) | $13.48 | $999K | +46.9% | — |
Insiders at Accelerant Holdings
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Francis James OneillCo-Founder, Chief U/W Officer | $507K | $11.0M | Aug 12, 2026 | — |
| Jeffrey L RadkeCEO | $999K | $8.8M | Aug 11, 2026 | — |
| Nancy HasleyDirector | — | $860K | Aug 14, 2026 | — |
| Jay Michael GreenCFO | — | $638K | Mar 24, 2026 | — |
| Christopher Lee-smithCo-Founder, Head Of Distrib. | $197K | — | Dec 17, 2025 | — |
| Matthew David SternbergCOO | $75K | $257K | Jul 27, 2026 | — |
| Samuel GaynorDirector | $101K | — | Nov 20, 2025 | — |
| Karen Sue MeriwetherDirector | $8K | $11K | Aug 25, 2026 | — |
ARX stock: common questions
Are Accelerant Holdings insiders buying ARX stock?
In the past 12 months, 5 insiders reported open-market purchases of ARX worth $1.9M. The latest was Co-Founder, Head Of Distrib. Christopher Lee-smith bought $197K of ARX at $13.42 — first open-market purchase in our records.
Are Accelerant Holdings insiders selling ARX stock?
6 insiders reported sales worth $21.6M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ARX's 52-week range?
Over the past year ARX has traded between $9.36 and $19.88. It last closed at $19.80 on Oct 9, 2026.