WHITE MOUNTAINS INSURANCE GROUP LTD
Recent Filings
All 1,000 filings →| Form | Description | Date |
|---|---|---|
| SCHEDULE 13G/A | — | Mar 27, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Mar 20, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Mar 5, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Feb 27, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Feb 27, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Feb 27, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Feb 27, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Feb 27, 2026 |
| 10-K | 10-K | Feb 27, 2026 |
| 8-K | 8-K | Feb 26, 2026 |
Insider Transactions
View all →| Insider | Title | Type | Shares | Owns After | Date |
|---|---|---|---|---|---|
| CAMPBELL REID TARLTON | — | Sale | 5,000 @ $2,050.00 | 10,440 | Dec 19, 2025 |
| CAMPBELL REID TARLTON | — | Sale | 5,000 | 10,440 | Dec 19, 2025 |
| Rountree George Manning | Chief Executive Officer | Sale | 5,000 @ $2,050.00 | 13,809 | Dec 19, 2025 |
| Gelston Philip A | — | Sale | 165 @ $2,048.51 | 1,568 | Dec 16, 2025 |
| SHANK SUZANNE F. | — | Award / Grant | 150 | 871 | May 22, 2025 |
| Yi Steven | — | Award / Grant | 150 | 525 | May 22, 2025 |
| Tanner David Allen | — | Award / Grant | 150 | 2,108 | May 22, 2025 |
| Hicks Weston M | — | Award / Grant | 210 | 2,746 | May 22, 2025 |
| Gelston Philip A | — | Award / Grant | 150 | 1,733 | May 22, 2025 |
| Dillon Margaret | — | Award / Grant | 150 | 945 | May 22, 2025 |