There have been 50 recent insider transactions recorded for White Mountains Insurance Group, Ltd. (WTM), including 29 buys and 13 sells. Total insider buying was valued at RSU Award and total insider selling at $27.88M.
Notable insiders with recent activity include Seelig Robert Lawrence, Tanner David Allen, Hildreth Michaela. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — WTM
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-19 |
Seelig Robert Lawrence |
EVP & General Counsel |
Gift (Given) |
50 |
- |
- |
17,857 |
| 2026-03-04 |
Tanner David Allen |
Director |
Gift (Given) |
225 |
- |
- |
1,879 |
| 2026-02-25 |
Seelig Robert Lawrence |
EVP & General Counsel |
RSU Award |
775 |
- |
- |
2,500 |
| 2026-02-25 |
Hildreth Michaela |
Md & Chief Accounting Officer |
RSU Award |
600 |
- |
- |
1,825 |
| 2026-02-25 |
Caffrey Liam P |
Chief Executive Officer |
RSU Award |
1,500 |
- |
- |
3,650 |
| 2026-02-25 |
Harrison Giles E |
President |
RSU Award |
775 |
- |
- |
2,675 |
| 2026-02-25 |
Papamichael Michael A |
Chief Financial Officer |
RSU Award |
500 |
- |
- |
1,200 |
| 2026-01-01 |
Seelig Robert Lawrence |
EVP & General Counsel |
Tax Withholding of RSU |
398 |
$2,078.03 |
$827.06K |
17,907 |
| 2026-01-01 |
Caffrey Liam P |
Chief Executive Officer |
Tax Withholding of RSU |
425 |
$2,078.03 |
$883.16K |
1,655 |
| 2026-01-01 |
Papamichael Michael A |
Chief Financial Officer |
Unknown |
- |
- |
- |
12 |
| 2026-01-01 |
Papamichael Michael A |
Chief Financial Officer |
Tax Withholding of RSU |
131 |
$2,078.03 |
$272.22K |
772 |
| 2026-01-01 |
Hildreth Michaela |
Md & Chief Accounting Officer |
Tax Withholding of RSU |
274 |
$2,078.03 |
$569.38K |
2,491 |
| 2025-12-23 |
Hildreth Michaela |
Md & Chief Accounting Officer |
Gift (Given) |
60 |
- |
- |
2,165 |
| 2025-12-19 |
Campbell Reid Tarlton |
Director |
Informative Sell |
5,000 |
- |
- |
10,440 |
| 2025-12-19 |
Campbell Reid Tarlton |
Director |
Informative Sell |
5,000 |
$2,050.00 |
$10.25M |
10,440 |
| 2025-12-19 |
Rountree George Manning |
Chief Executive Officer |
Informative Sell |
5,000 |
$2,050.00 |
$10.25M |
13,809 |
| 2025-12-16 |
Gelston Philip A |
Director |
Informative Sell |
165 |
$2,048.51 |
$338K |
1,568 |
| 2025-11-25 |
Campbell Reid Tarlton |
Director |
Gift (Given) |
50 |
- |
- |
15,440 |
| 2025-11-10 |
Tanner David Allen |
Director |
Gift (Given) |
4 |
- |
- |
2,104 |
| 2025-05-22 |
Hicks Weston M |
Director |
RSU Award |
210 |
- |
- |
2,746 |
| 2025-05-22 |
Choksi Mary C |
Director |
RSU Award |
150 |
- |
- |
1,858 |
| 2025-05-22 |
Tanner David Allen |
Director |
RSU Award |
150 |
- |
- |
2,108 |
| 2025-05-22 |
Campbell Reid Tarlton |
Director |
RSU Award |
150 |
- |
- |
15,490 |
| 2025-05-22 |
Carlson Peter M |
Director |
RSU Award |
150 |
- |
- |
717 |
| 2025-05-22 |
Gelston Philip A |
Director |
RSU Award |
150 |
- |
- |
1,733 |
| 2025-05-22 |
Dillon Margaret |
Director |
RSU Award |
150 |
- |
- |
945 |
| 2025-05-22 |
Yi Steven |
Director |
RSU Award |
150 |
- |
- |
525 |
| 2025-05-22 |
Shank Suzanne F. |
Director |
RSU Award |
150 |
- |
- |
871 |
| 2025-02-26 |
Seelig Robert Lawrence |
EVP & General Counsel |
RSU Award |
825 |
- |
- |
2,725 |
| 2025-02-26 |
Rountree George Manning |
Chief Executive Officer |
RSU Award |
1,625 |
- |
- |
5,425 |
| 2025-02-26 |
Hildreth Michaela |
Md & Chief Accounting Officer |
RSU Award |
625 |
- |
- |
1,825 |
| 2025-02-26 |
Caffrey Liam P |
EVP& Chief Financial Officer |
RSU Award |
1,025 |
- |
- |
3,400 |
| 2025-02-26 |
Harrison Giles E |
EVP & Chief Strategy Officer |
RSU Award |
900 |
- |
- |
1,900 |
| 2025-01-01 |
Seelig Robert Lawrence |
EVP & General Counsel |
Tax Withholding of RSU |
496 |
$1,945.06 |
$964.75K |
17,305 |
| 2025-01-01 |
Rountree George Manning |
Chief Executive Officer |
Tax Withholding of RSU |
1,067 |
$1,945.06 |
$2.08M |
18,809 |
| 2025-01-01 |
Hildreth Michaela |
Md & Chief Accounting Officer |
Tax Withholding of RSU |
323 |
$1,945.06 |
$628.25K |
2,225 |
| 2025-01-01 |
Caffrey Liam P |
President & CFO |
Tax Withholding of RSU |
420 |
$1,945.06 |
$816.93K |
830 |
| 2024-11-29 |
Hildreth Michaela |
Md & Chief Accounting Officer |
Gift (Given) |
75 |
- |
- |
1,798 |
| 2024-06-10 |
Harrison Giles E |
EVP & Chief Strategy Officer |
Disposition |
- |
- |
- |
- |
| 2024-06-10 |
Harrison Giles E |
EVP & Chief Strategy Officer |
RSU Award |
1,000 |
- |
- |
1,000 |
| 2024-05-23 |
Hicks Weston M |
Director |
RSU Award |
230 |
- |
- |
2,536 |
| 2024-05-23 |
Choksi Mary C |
Director |
RSU Award |
165 |
- |
- |
1,708 |
| 2024-05-23 |
Tanner David Allen |
Director |
RSU Award |
165 |
- |
- |
1,958 |
| 2024-05-23 |
Campbell Reid Tarlton |
Director |
RSU Award |
165 |
- |
- |
15,340 |
| 2024-05-23 |
Carlson Peter M |
Director |
RSU Award |
165 |
- |
- |
1,133 |
| 2024-05-23 |
Shank Suzanne F. |
Director |
RSU Award |
165 |
- |
- |
721 |
| 2024-05-23 |
Gelston Philip A |
Director |
RSU Award |
165 |
- |
- |
1,583 |
| 2024-05-23 |
Dillon Margaret |
Director |
RSU Award |
165 |
- |
- |
795 |
| 2024-05-23 |
Yi Steven |
Director |
RSU Award |
165 |
- |
- |
375 |
| 2024-03-21 |
Campbell Reid Tarlton |
Director |
Gift (Given) |
55 |
- |
- |
15,175 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
