Rountree George Manning 4
4 · WHITE MOUNTAINS INSURANCE GROUP LTD · Filed Dec 22, 2025
Insider Transaction Report
Form 4
Rountree George Manning
Managing Director
Transactions
- Sale
Common Shares
2025-12-19$2050.00/sh−5,000$10,250,000→ 13,809 total
Holdings
- 5,425
Common Shares (restricted)
- 122(indirect: By 401(k))
Common Shares
Footnotes (1)
- [F1]Reflects accumulation of 2 Common Shares in Reporting Person's Company retirement account since his last filed report. The information in this report is based on a plan report dated as of December 20, 2025.