GELSTON PHILIP A sold 9.5% of their position (165.00 shares) of WHITE MOUNTAINS INSURANCE GROUP LTD on the open market
Open‑market sale worth $338.0K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 12/16/2025ACC: 0000776867-25-000025
Director
Since May 2019
-165.00
Net shares
Net seller
$338.0K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
165.00 disposed
Non-Derivative Transactions1
Common Shares
Direct
Shares
−165.00
Price / share
$2.05K
Trade value
$338K
% of position
9.5%
12/16/2025
1.73K→1.57K
Total
Net shares
−165.00
Net value
-$338K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Shares Direct | 12/16/2025 | S · Sale | −165.00 | $2.05K | $338K | 9.5% | 1.73K | 1.57K |
| Total | −165.00 | -$338K | ||||||
Derivative Transactions0
No derivative transactions reported