CAMPBELL REID TARLTON - Insider Non-Derivative Transactions at WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Dec 19, 2025, CAMPBELL REID TARLTON's relationship to WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) is Director, and currently has 10,440 shares of Common Shares.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other WTM insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

CAMPBELL REID TARLTON - Insider Non-Derivative Transactions of WTM Common Shares

CAMPBELL REID TARLTON - Insider Non-Derivative Transactions at WTM

Items per page:

0 of 0

Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Dec 20, 2025	Sell -- (Common Shares)	5000	2050	10440
Dec 20, 2025	Sell -- (Common Shares)	5000	0	10440
Nov 26, 2025	G -- (Common Shares)	50	0	15440
May 23, 2025	Acquisition -- (Common Shares)	150	0	15490
May 24, 2024	Acquisition -- (Common Shares)	165	0	15340
Mar 22, 2024	G -- (Common Shares)	55	0	15175
Feb 23, 2024	Acquisition -- (Common Shares)	45	0	15230
Jan 2, 2024	F -- (Common Shares)	710	1505.01	15185
Jan 2, 2023	F -- (Common Shares)	710	1414.33	14095