White Mountains CEO Manning Rountree to retire Dec 31, 2025; Liam Caffrey to succeed

WHITE MOUNTAINS INSURANCE GROUP LTD

Manning Rountree to retire as CEO and board member on Dec 31, 2025; becomes Senior Advisor through Jan 1, 2028.
Liam Caffrey, currently President and CFO, becomes CEO on Jan 1, 2026 and joins the board.
Michael Papamichael succeeds Caffrey as CFO; Giles Harrison becomes President, both effective Jan 1, 2026.
Rountree to receive $600K cash bonus for 2025 plus $300K annual salary as Senior Advisor; remains eligible for LTIP.
Board Compensation Committee approved letter agreement with Rountree including restrictive covenants and mutual release.

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