| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Caffrey Liam P | Chief Executive Officer, Director | C/O WHITE MOUNTAINS INSURANCE GROUP, LTD, 23 SOUTH MAIN STREET, SUITE 3B, HANOVER | Wesley C. Bell, by Power of Attorney | 25 Feb 2026 | 0001915424 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTM | Common Shares (Restricted) | Award | $0 | +1,500 | +70% | $0.000000 | 3,650 | 25 Feb 2026 | Direct | F1 |
| holding | WTM | Common Shares | 1,655 | 25 Feb 2026 | Direct | ||||||
| holding | WTM | Common Shares | 8 | 25 Feb 2026 | by WTM Retirement Plan |
| Id | Content |
|---|---|
| F1 | On February 25, 2026, the Reporting Person received a restricted share award of 1,500 Common Shares, which vests on January 1, 2029. |