| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Tanner David Allen | Director | C/O WHITE MOUNTAINS INSURANCE GROUP, LTD, 23 SOUTH MAIN STREET, SUITE 3B, HANOVER | Wesley C. Bell, by Power of Attorney | 04 Mar 2026 | 0001318960 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTM | Common Shares | Gift | -225 | -11% | $0.000000* | 1,879 | 04 Mar 2026 | Direct |