08:54 AM EDT, 09/02/2025 (MT Newswires) -- White Mountains Insurance Group ( WTM ) said Tuesday that it has appointed Chief Financial Officer Liam Caffrey the company's chief executive officer as of Jan. 1.

Caffrey, who will also become a member of its board of directors, will succeed Chief Executive Manning Rountree, who is retiring at the end of the year, the company said.

The company also said Deputy CFO Michael Papamichael will succeed Caffrey as CFO.