ROUNTREE GEORGE MANNING (Chief Executive Officer) sold 26.6% of their position (5K shares) of WHITE MOUNTAINS INSURANCE GROUP LTD on the open market
Open‑market sale worth $10.25M — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 12/22/2025ACC: 0000776867-25-000029
DirectorOfficer· Chief Executive Officer
Since Jan 2019
-5K
Net shares
Net seller
$10.25M
Total sold
1
Open market trades
0B · 1S
1
Total transactions
5K disposed
Non-Derivative Transactions1
Common Shares
Direct
Shares
−5K
Price / share
$2.05K
Trade value
$10.25M
% of position
26.6%
12/19/2025
18.81K→13.81K
Total
Net shares
−5K
Net value
-$10.25M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Shares Direct | 12/19/2025 | S · Sale | −5K | $2.05K | $10.25M | 26.6% | 18.81K | 13.81K |
| Total | −5K | -$10.25M | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)2
Common Shares (restricted)
DirectShares owned5.42K
Common Shares
IndirectShares owned122.00
Total
5.42K direct·122.00 indirect5.55K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Shares (restricted) | 5.42K | Direct |
| Common Shares | 122.00 | Indirect |
| Total | 5.55K | 5.42K direct·122.00 indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported