Form 4 Filing by Accelerant Holdings

This filing details transactions of Class A Common Shares by Francis James O'Neill, Co-Founder and Chief U/W Officer of Accelerant Holdings. On June 22, 2026, 70,536 shares were sold at a weighted average price of $13.2072, and on June 23, 2026, 76,464 shares were sold at a weighted average price of $13.1098. These transactions were executed under a Rule 10b5-1 trading plan. The sales were conducted through Famed Ventures Limited, which is wholly owned by O'Neill. Following these transactions, 166,644 shares remain under direct ownership. The filing also includes a Power of Attorney granted by O'Neill to designated individuals at Accelerant Holdings, authorizing them to execute necessary filings with the SEC on his behalf.