X0609 4 2026-09-10 0 0001593275 Hamilton Insurance Group, Ltd. HG 0002094343 Duffin Timothy James true C/O HAMILTON INSURANCE GROUP, LTD. WELLESLEY HOUSE NORTH, 90 PITTS BAY ROAD PEMBROKE D0 HM08 BERMUDA 0 1 0 0 Chief Underwriting Officer 0 Class B Common Shares 2026-09-10 4 S 0 28500 34.5327 D 223459 D Class B Common Shares 2026-09-11 4 S 0 28500 34.6871 D 194959 D The price reported in Column 4 represents a weighted average price. These Class B common shares were sold in multiple transactions at prices ranging from $34.50 to $34.565, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Includes restricted stock units. The price reported in Column 4 represents a weighted average price. These Class B common shares were sold in multiple transactions at prices ranging from $34.47 to $35.33, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Ryan Minetti, Attorney-in-Fact 2026-09-14