White Mountains Insurance Group, Insider Trades

WTM

Track insider trading activity from White Mountains Insurance Group, executives and directors. See which insiders are buying and selling WTM stock.

Trades Last 12 Months

WTM Price

All Insider Trades for White Mountains Insurance Group,

Sort by: Latest Trade Biggest Holding
Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Holding Value $4.1M 2,014 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 135 shares
$2,139.09
$2,034.55
Carlson Peter M Director
Holding Value $1.73M 852 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 135 shares
$2,139.09
$2,034.55
Holding Value $21.5M 10,575 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 135 shares
$2,139.09
$2,034.55
Choksi Mary C Director
Holding Value $4.05M 1,993 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 135 shares
$2,139.09
$2,034.55
Dillon Margaret Director
Holding Value $2.2M 1,080 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 135 shares
$2,139.09
$2,034.55
Hicks Weston M Director
Holding Value $5.97M 2,936 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$406k 190 shares
$2,139.09
$2,034.55
Shank Suzanne F. Director
Holding Value $2.05M 1,006 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 135 shares
$2,139.09
$2,034.55
Gelston Philip A Director
Holding Value $3.46M 1,703 shares
Last Trade
May 21, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 135 shares
$2,139.09
$2,034.55
Seelig Robert Lawrence EVP & General Counsel
Holding Value $36.3M 17,857 shares
Last Trade
Mar 19, 2026 Sale (Gift)Shares transferred as a gift rather than bought or sold for cash.
$109k 50 shares
$2,181.16
$2,034.55
Papamichael Michael A Chief Financial Officer
Holding Value $2.44M 1,200 shares
Last Trade
Feb 25, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$1.11M 500 shares
$2,219.76
$2,034.55
Caffrey Liam P Chief Executive Officer
Holding Value $7.43M 3,650 shares
Last Trade
Feb 25, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$3.33M 1,500 shares
$2,219.76
$2,034.55
Harrison Giles E President
Holding Value $5.44M 2,675 shares
Last Trade
Feb 25, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$1.72M 775 shares
$2,219.76
$2,034.55
Hildreth Michaela MD & Chief Accounting Officer
Holding Value $3.71M 1,825 shares
Last Trade
Feb 25, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$1.33M 600 shares
$2,219.76
$2,034.55
Holding Value $21.2M 10,440 shares
Last Trade
Dec 19, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$10.3M 5,000 shares
$2,050.00
$2,034.55
Rountree George Manning Chief Executive Officer
Holding Value $28.1M 13,809 shares
Last Trade
Dec 19, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$10.3M 5,000 shares
$2,050.00
$2,034.55
Choksi Mary C Director
Holding Value $3.78M 1,858 shares
Last Trade
May 22, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$270k 150 shares
$1,797.65
$2,034.55
Shank Suzanne F. Director
Holding Value $1.77M 871 shares
Last Trade
May 22, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$270k 150 shares
$1,797.65
$2,034.55
Yi Steven Director
Holding Value $1.07M 525 shares
Last Trade
May 22, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$270k 150 shares
$1,797.65
$2,034.55
Holding Value $46.5B 22,856,814 shares
Last Trade
Jun 30, 2023 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$8.22B 5,916,816 shares
$1,388.91
$2,034.55
Davis Morgan W Director
Holding Value $13.6M 6,709 shares
Last Trade
Dec 28, 2022 Sale (Gift)Shares transferred as a gift rather than bought or sold for cash.
$279k 200 shares
$1,395.01
$2,034.55

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