CAMPBELL REID TARLTON 4
4 · WHITE MOUNTAINS INSURANCE GROUP LTD · Filed Dec 22, 2025
Insider Transaction Report
Form 4
CAMPBELL REID TARLTON
Managing Director & President
Transactions
- Sale
Common Shares
2025-12-19−5,000→ 10,440 total
Holdings
- 119(indirect: By 401(k))
Common Shares