HG · Hamilton Insurance Group, Ltd.

Hamilton Insurance Group, Ltd. (NYSE: HG) (“Hamilton” or the “Company”), today announced the promotion of Moussa Thiam to Group Head of Compliance, effective January 1, 2026. Moussa Thiam, Group Head of Compliance at Hamilton This appointment underscores Hamilton’s continued focus on strengthening governance and regulatory oversight as a publicly listed company, and recognises Thiam’s significant contributions since joining Hamilton in December 2024. In his new role, Thiam will lead and coordinate compliance activities across Hamilton’s global operations, ensuring consistent standards and a unified approach across its underwriting platforms. Based in London, he will report to Gemma Carreiro, Group General Counsel, and will work closely with senior leadership and teams across the organisation to further embed compliance into day-to-day decision-making and support the Company’s strategic ambitions. Commenting on the appointment, Carreiro said, “We operate in an increasingly complex and

Hamilton Insurance Group, Ltd. (NYSE: HG) (“Hamilton” or the “Company”), today announced the appointment of Michelle Li as Chief Financial Officer of Hamilton Global Specialty, the Company’s London-based underwriting platform. Michelle Li, Chief Financial Officer, Hamilton Global Specialty Based in London, Li will work closely with Alex Baker, Chief Executive Officer of Hamilton Global Specialty and report to Brian Deegan, Group Chief Accounting Officer, and will be a key member of the Company’s global Finance function. In welcoming Li, Baker said, “I’m delighted Michelle has joined our leadership team at Hamilton Global Specialty. She brings exactly the blend of finance discipline, Lloyd’s market knowledge and collaborative leadership we value at Hamilton. Her expertise will help us keep our strategic focus and momentum across our underwriting platform.” Deegan adds, “Michelle’s strong record of financial leadership makes her an excellent addition to our global Finance function. I

Hamilton Insurance Group, Ltd. (NYSE: HG) (“Hamilton” or the “Company”) will issue its fourth quarter and full-year 2025 financial results after the market closes on Thursday, February 19, 2026. Hamilton will host a conference call to discuss its financial results on Friday, February 20, 2026, at 9:00 a.m. Eastern Time. A live, audio webcast of the conference call can be accessed through the Investors portal of the Company’s website at investors.hamiltongroup.com where a replay of the call will also be available. For access to the webcast, please log in a few minutes in advance to complete any necessary registration. About Hamilton Insurance Group, Ltd. Hamilton is a Bermuda-headquartered specialty insurance and reinsurance company that underwrites risks on a global basis through its wholly owned subsidiaries. Its three underwriting platforms: Hamilton Global Specialty, Hamilton Select and Hamilton Re, each with dedicated and experienced leadership, provide access to diversified and

Hamilton Insurance Group, Ltd. (NYSE: HG) (“Hamilton” or the “Company”) announced today the appointment of Susan Steinhoff as Chief Underwriting Officer at Hamilton Re, the Company’s Bermuda-based insurance and reinsurance underwriting platform. Susan Steinhoff, Chief Underwriting Officer, Hamilton Re Steinhoff brings over 25 years of insurance industry experience, having held senior roles at ACE (now Chubb) and joining Hamilton in its early days in 2014. In her new role, which is effective from January 1, 2026, Steinhoff will lead underwriting activities across Hamilton Re and report to Adrian Daws, Chief Executive Officer at Hamilton Re. She succeeds Tim Duffin who became Group Chief Underwriting Officer on January 1, 2026. With Steinhoff’s leadership, Hamilton will continue to strengthen its underwriting capabilities and deliver exceptional value to its clients and partners. Daws commented, “I am delighted to announce Susan’s well-deserved promotion to Chief Underwriting Officer at