Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| WHITE MOUNTAINS INSURANCE GROUP LTDWTM · Entity 3904 | Chief Financial Officer | February 25, 2026 | February 27, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
WHITE MOUNTAINS INSURANCE GROUP LTD
Report date February 25, 2026 · Filed February 27, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common Shares (Restricted)SEC Table I · non-derivative | Direct | 1,200 |
Reported balance
After 2026-02-25 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-02-25 · Grant · Acquired 500 · Balance 1,200 F1: On February 25, 2026, the Reporting Person received a restricted share award of 500 Common Shares, which vests on January 1, 2029. |
| Common SharesSEC Table I · non-derivative | Direct | 772 |
Reported balance
Holding disclosure · report date 2026-02-25 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 772 |
| Common SharesSEC Table I · non-derivative | Indirectby White Mountains Retirement Plan | 12 |
Reported balance
Holding disclosure · report date 2026-02-25 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 12 |
Filing footnotes · ownership attribution and instrument terms
F1: On February 25, 2026, the Reporting Person received a restricted share award of 500 Common Shares, which vests on January 1, 2029.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 25, 2026 Filed Feb 27, 2026 16:17 UTC | WHITE MOUNTAINS INSURANCE GROUP LTD WTM · Entity 3904 | GrantCommon Shares (Restricted) | 500 | $0.00 | $0.00 |
DisclosureSEC source: 0000776867-26-000018 · form4.xml · nonDerivative · entry 1 Papamichael Michael A · CIK 0002090784 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,200 F1 · balance_after: On February 25, 2026, the Reporting Person received a restricted share award of 500 Common Shares, which vests on January 1, 2029. Read SEC document |
| January 01, 2026 Filed Jan 3, 2026 02:28 UTC | WHITE MOUNTAINS INSURANCE GROUP LTD WTM · Entity 3904 | Tax withholdingCommon Shares | 131 | $2,078.03 | $272,221.93 |
DisclosureSEC source: 0000776867-26-000009 · form4.xml · nonDerivative · entry 1 Papamichael Michael A · CIK 0002090784 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 772 F1 · balance_after: On January 1, 2026, 400 restricted Common Shares became unrestricted. 131 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.