Philip A Gelston White Mountains Insurance Group LTD (WTM) insider trading activity

WTM Quotes by TradingView

Philip A Gelston is Director of WHITE MOUNTAINS INSURANCE GROUP LTD. Currently has a direct ownership of 1,568 shares of WTM, which is worth approximately $3.02 Million. The most recent transaction as insider was on Dec 16, 2025, when has been sold 165 shares (Common Shares) at a price of $2048.51 per share, resulting in proceeds of $338,004. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 1.57K
9.52% 3M change
0.95% 12M change
Total Value Held $3.02 Million

Philip A Gelston Transaction History

Date Transaction Value Shares Traded Shares Held Form
Dec 16 2025
SELL
Open market or private sale
$338,004 $2048.51 p/Share
165 Reduced 9.52%
1,568 Common Shares
May 22 2025
BUY
Grant, award, or other acquisition
-
150 Added 7.97%
1,733 Common Shares
May 23 2024
BUY
Grant, award, or other acquisition
-
165 Added 9.44%
1,583 Common Shares
May 25 2023
BUY
Grant, award, or other acquisition
-
180 Added 11.26%
1,418 Common Shares
May 26 2022
BUY
Grant, award, or other acquisition
-
225 Added 15.38%
1,238 Common Shares
May 27 2021
BUY
Grant, award, or other acquisition
-
225 Added 18.17%
1,013 Common Shares
May 21 2020
BUY
Grant, award, or other acquisition
-
225 Added 22.21%
788 Common Shares
May 23 2019
BUY
Grant, award, or other acquisition
-
250 Added 30.75%
563 Common Shares
May 24 2018
BUY
Grant, award, or other acquisition
-
250 Added 44.4%
313 Common Shares
Mar 01 2018
BUY
Grant, award, or other acquisition
-
63 Added 50.0%
63 Common Shares
PAG

Philip A Gelston

Director
Hanover, NH

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