Stephen Klar Elected to the White Mountains Board

(NYSE: WTM) The Board of Directors of White Mountains Insurance Group, Ltd. has elected Stephen Klar as a director of the Company. Mr. Klar was formerly the President and a Managing Partner of Wellington Management Group LLP. White Mountains is a Bermuda-domiciled financial services holding company traded on the New York Stock Exchange and the Bermuda Stock Exchange under the symbol "WTM" and "WTM.BH", respectively.

White Mountains to Hold 2026 Annual Investor Information Meeting on June 5, 2026

White Mountains Insurance Group, Ltd. (NYSE: WTM) announced it will hold its Annual Investor Information Meeting on Friday, June 5, 2026, at 10:00 a.m. Eastern Time. The meeting will take place at the Mandarin Ballroom, 36th Floor, Mandarin Oriental Hotel, 80 Columbus Circle at 60th Street, New York, NY 10023, with participation available both in person and via webcast. CEO Liam Caffrey stated that the meeting will cover White Mountains's operations and outlook, followed by a Q&A session. The company has posted the announcement and webcast instructions on its website, and key documents such as the 2025 Annual Report on Form 10-K, Notice of 2026 Annual General Meeting of Members and Proxy Statement, and 2025 Management Report are available online. White Mountains is a Bermuda-domiciled financial services holding company traded on the New York Stock Exchange under the symbol WTM and on the Bermuda Stock Exchange under the symbol WTM.BH. Investors are encouraged to pre-register or register on the day of the event, and online questions should be submitted at least 48 hours in advance. Additional financial information is available on the company's website.