WHITE MOUNTAINS INSURANCE GROUP LTD
SEC Filing List

WTM         CIK: 0000776867

Form Description Owner/Filer Filing Agent Date Actions
4Statement of changes in beneficial owner...Tanner David AllenWhite Mountains Insurance Group Ltd08/31/2026
4Statement of changes in beneficial owner...Klar StephenWhite Mountains Insurance Group Ltd08/27/2026
8-KCurrent report filingWhite Mountains Insurance Group Ltd Workiva Inc. Wdesk FA01 /fa08/27/2026
3Initial statement of beneficial ownershi...Klar StephenWhite Mountains Insurance Group Ltd08/27/2026
N-PXAnnual Report of Proxy Voting Record of ...Toppan Merrill/FA08/26/2026
13F-HRInitial Quarterly Form 13F Holdings Repo...Toppan Merrill/FA08/12/2026
8-KCurrent report filingWhite Mountains Insurance Group Ltd Workiva Inc. Wdesk FA01 /fa08/06/2026
10-QQuarterly report pursuant to Section 13 ...White Mountains Insurance Group Ltd Workiva Inc. Wdesk FA01 /fa08/06/2026
11-KAnnual report of employee stock purchase...White Mountains Insurance Group Ltd Workiva Inc. Wdesk FA01 /fa06/30/2026
8-KCurrent report filingWhite Mountains Insurance Group Ltd Workiva Inc. Wdesk FA01 /fa06/05/2026
No record found.
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