Hamilton Insurance Group, Ltd. (NYSE: HG) (“Hamilton” or the “Company”) announced today two Board of Director Chair appointments within its Hamilton Global Specialty underwriting platform: Dymphna (Dee) Lehane has been appointed as Chair of Hamilton Managing Agency Limited (“HMA”) in the United Kingdom and Independent Non-Executive Director of Hamilton Insurance Designated Activity Company (“HIDAC”) in Ireland; Karen Forte has been appointed as Chair of HIDAC and maintains her role as Chair of the Audit Committee at HMA. Lehane’s appointment is effective November 1, 2025, and Forte’s appointment is effective January 1, 2026, subject to regulatory approval.

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Dee Lehane

The Company also announced the retirement of long-standing Chair of HMA and HIDAC, Peter Haynes, effective December 31, 2025. Haynes has served as Chair of HMA since 2015 and HIDAC since 2020.

Alex Baker, Chief Executive Officer, Hamilton Global Specialty said, “Welcoming Dee and Karen to their new roles marks an important step in Hamilton’s journey. Their expertise and leadership will be invaluable as we continue to achieve our strategic goals, operate to the highest standard of governance and maintain our excellent culture within our insurance companies.

“I would also like to extend my deepest gratitude to Peter for his decade of service and significant contributions to our success. He has been an integral part of Hamilton Global Specialty’s transformation throughout his tenure, and it’s been a privilege to work alongside him on that journey.”

Lehane joins Hamilton with 35 years of digital strategy and governance experience in the global insurance industry. She is the former Global Managing Partner for Insurance at Accenture, where she led strategic initiatives and technology-driven transformations for major insurance organizations worldwide. She has extensive board governance experience having previously served as a board member at Aviva, Argo International, Westfield Specialty and the Cabinet Office of the United Kingdom Government.

Forte currently serves as an Independent Non-Executive Director on the Boards of HMA and HIDAC. She has extensive board-level experience and a strong commitment to transparency and governance. She is the former Chief Information Officer and Transformation Lead at Allianz Ireland.

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 profitable business around the world.

For more about our company, visit www.hamiltongroup.com or find us on LinkedIn at Hamilton.

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