Tanner David Allen (CIK 1318960) reported 4 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-22). Recent activity: Buy WTM (135 shares), Sell WTM (225 shares), Sell WTM (4 shares), Buy WTM (150 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) | Director | Buy | 135 | $0 |
| 2026-03-05 | WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) | Director | Sell | 225 | $0 |
| 2025-11-10 | WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) | Director | Sell | 4 | $0 |
| 2025-05-23 | WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) | Director | Buy | 150 | $0 |
Source: SEC Form 4 filings · as of 2026-05-22