White Mountains Insurance Furnishes June 2026 Investor Presentation

What Happened
White Mountains Insurance Group Ltd. (WTM) filed a Form 8‑K on June 5, 2026, disclosing that its executive officers will use an investor presentation at the Registrant’s Annual Investor Information Meeting on June 5, 2026. The presentation is furnished as Exhibit 99.1 to the 8‑K and the disclosure is made under Item 7.01 (Regulation FD Disclosure).

Key Details

• Document furnished: Exhibit 99.1 — Investor Presentation dated June 5, 2026.
• Event/date: Presentation will be used, in whole or in part, at the Annual Investor Information Meeting on June 5, 2026.
• Regulatory notice: Information furnished pursuant to Item 7.01 (Regulation FD); exhibit listed under Item 9.01.
• Availability: The presentation is included as part of the 8‑K filing with the SEC.

Why It Matters
This filing makes the company’s investor presentation publicly available and signals management’s messaging for the Annual Investor Information Meeting. Furnishing the presentation under Regulation FD ensures the information is broadly disclosed to all investors at the same time. Retail investors can review Exhibit 99.1 in the SEC filing to see any updates or commentary management provides, though the 8‑K itself does not include additional financial results or executive changes.