X0508 4 2025-07-23 0001997350 Accelerant Holdings ARX 0002008632 ONeill Francis James UNIT 106, WINDWARD 3 REGATTA OFFICE PARK, WEST BAY ROAD GRAND CAYMAN E9 KY1-1108 CAYMAN ISLANDS true Co-Founder, Chief U/W Officer false Stock Option (Right to Buy) 21 2025-07-23 4 A 0 882611 0 A 2035-07-23 Class A Common Shares 882611 882611 D Twenty-five percent (25%) of the Class A Common Shares subject to the option vest on July 23, 2026 (the one-year anniversary of the grant date), and the remaining Class A Common Shares subject to the option vest in 6.25% quarterly installments through July 23, 2029 (the four-year anniversary of the grant date), in each case subject to the Reporting Person's continuous service. /s/ Robert Hardy, Attorney-in-Fact 2025-07-25