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WHITE MOUNTAINS INSURANCE GROUP LTD

For the period ended Sep 30, 2025. Filed Nov 6, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 6, 2025

WTM$2,256.20+0.7%Stored close · as of Nov 9, 2026

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Item 6. Exhibits

(a)Exhibit numberName
2.1—Securities Purchase Agreement, dated October 2, 2025, by and among White Mountains Investments (Luxembourg) S.à r. l., WM Pierce Holdings, Inc., PM Holdings, LLC and the other parties thereto (incorporated by reference herein to Exhibit 2.1 of the Company’s Current Report on Form 8-K dated October 2, 2025).
10.1—Employment Agreement and Release between White Mountains Capital LLC and G. Manning Rountree. (*)
10.2—First Amendment to Credit Agreement, dated as of July 4, 2025, among Distinguished LLC, a Delaware limited liability company, the other credit parties party thereto, the lenders party thereto and BMO Bank N.A., as agent. (*)
10.3—Limited Consent and Second Amendment to Credit Agreement, dated as of October 31, 2025, by and among Distinguished LLC, a Delaware limited liability company, the other credit parties party thereto, the lenders party thereto and BMO Bank N.A., as agent. (*)
31.1—Principal Executive Officer Certification Pursuant to Rule 13a-14 (a) of the Securities Exchange Act of 1934, as Amended. (*)
31.2—Principal Financial Officer Certification Pursuant to Rule 13a-14 (a) of the Securities Exchange Act of 1934, as Amended. (*)
32.1—Principal Executive Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. (*)
32.2—Principal Financial Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. (*)
101—XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
(*)Included herein
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