ARX insider trading — Accelerant Holdings
Over the last 90 days, insiders at Accelerant Holdings (ARX) made 0 open-market purchases worth $0 and 1 open-market sale worth $11K, making them net sellers by $11K. The largest sale was by Meriwether Karen Sue (Director), who sold 542 shares for $11K on Aug 21, 2026.
Updated Oct 16, 2026.
Recent ARX insider transactions
Every Form 4 filed by Accelerant Holdings officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Aug 21, 2026 | Meriwether Karen Sue | Director | S · Sale | Direct | 542 | $19.62 | $11K | Form 4 |
| Aug 13, 2026 | Hasley Nancy | Director | S · Sale · 10b5-1 | Direct | 20,489 | $19.56 | $401K | Form 4 |
| Aug 11, 2026 | Oneill Francis James | Co-Founder, Chief U/W Officer | S · Sale · 10b5-1 | Indirect | 89,219 | $12.41 | $1.11M | Form 4 |
| Aug 10, 2026 | Oneill Francis James | Co-Founder, Chief U/W Officer | S · Sale · 10b5-1 | Indirect | 63,616 | $12.07 | $768K | Form 4 |
| Aug 10, 2026 | Radke Jeffrey L | Co-Founder, CEO | S · Sale · 10b5-1 | Indirect | 80,000 | $12.09 | $967K | Form 4 |
| Aug 3, 2026 | Radke Jeffrey L | Co-Founder, CEO | S · Sale · 10b5-1 | Indirect | 80,000 | $12.06 | $965K | Form 4 |
| Jul 28, 2026 | Oneill Francis James | Co-Founder, Chief U/W Officer | S · Sale · 10b5-1 | Indirect | 104,647 | $14.56 | $1.52M | Form 4 |
| Jul 27, 2026 | Oneill Francis James | Co-Founder, Chief U/W Officer | S · Sale · 10b5-1 | Indirect | 110,467 | $14.63 | $1.62M | Form 4 |
| Jul 27, 2026 | Radke Jeffrey L | Co-Founder, CEO | S · Sale · 10b5-1 | Indirect | 95,223 | $14.60 | $1.39M | Form 4 |
| Jul 27, 2026 | Sternberg Matthew David | COO, Risk Exchange | S · Sale · 10b5-1 | Direct | 17,568 | $14.64 | $257K | Form 4 |
| Jul 23, 2026 | Sternberg Matthew David | COO, Risk Exchange | F · Tax withholding · 10b5-1 | Direct | 3,910 | $13.77 | $54K | Form 4 |
| Jul 20, 2026 | Radke Jeffrey L | Co-Founder, CEO | S · Sale · 10b5-1 | Indirect | 80,000 | $13.51 | $1.08M | Form 4 |
| Jul 17, 2026 | Radke Jeffrey L | Co-Founder, CEO | S · Sale · 10b5-1 | Indirect | 14,777 | $14.30 | $211K | Form 4 |
ARX insider trading FAQ
Are insiders buying ARX stock?
Not on the open market. In the last 90 days, Accelerant Holdings insiders made no open-market purchases, and 1 open-market sale totaling $11K. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading ARX?
Recent sellers: Meriwether Karen Sue.
Where does ARX insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.