| 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 | 10 Nov 2025 | 0001318960 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTM | Common Shares | Gift | $0 | -4 | -0.19% | $0.000000 | 2,104 | 10 Nov 2025 | Direct |