WHITE MOUNTAINS INSURANCE GROUP LTD
Company Information
Industry Fire, Marine & Casualty Insurance
SIC Code 6331
Entity Type operating
SEC Category Large accelerated filer
State of Incorporation Bermuda
Business Address 23 SOUTH MAIN STREET, HANOVER, NH, 03755
Mailing Address 23 SOUTH MAIN STREET, HANOVER, NH, 03755
Phone 603 640 2200
Fiscal Year End 1231
EIN 942708455
Financial Overview
FY2024 FY
$2.24B
Revenue
$792.80M
Net Income
$9.93B
Total Assets
Recent SEC Filings
| Form Type | Date Filed | Document |
|---|---|---|
| 13F-HR Institutional investment holdings | February 12, 2026 | View on SEC |
| SCHEDULE 13G/A Passive ownership amendment | February 12, 2026 | View on SEC |
| 8-K Current report of material events | February 6, 2026 | View on SEC |
| SCHEDULE 13G Passive beneficial ownership (>5%) | February 5, 2026 | View on SEC |
| 8-K Current report of material events | January 7, 2026 | View on SEC |
| 4 Insider stock transaction report | January 5, 2026 | View on SEC |
| 3 Initial insider ownership report | January 2, 2026 | View on SEC |
| 4 Insider stock transaction report | January 2, 2026 | View on SEC |
| 4 Insider stock transaction report | January 2, 2026 | View on SEC |
| 4 Insider stock transaction report | January 2, 2026 | View on SEC |
Material Events
8-K Strategy Change December 8, 2025
High Impact
- WHITE MOUNTAINS INSURANCE GROUP LTD completed the sale of a 77.3% controlling interest in WM Pierce Holdings, Inc. (Bamboo Group).
- The sale was made to investment funds advised by CVC Capital Partners for $848 million in cash.
Insider Trading
STRONG SELL 3 insiders
4 recent transactions
View Full Insider Trading Profile
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Investor Resources
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Important Disclaimer
This AI-generated analysis is for informational purposes only and does not constitute financial or investment advice. Always consult with qualified professionals and conduct your own research before making investment decisions.