Reid Tarlton Campbell - 19 Dec 2025 Form 4/A - Amendment Insider Report for WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)

Role
Director
Signature
Wesley C Bell, by Power of Attorney
Issuer symbol
WTM
Transactions as of
19 Dec 2025
Net transactions value
-$10,250,000
Form type
4/A - Amendment
Filing time
22 Dec 2025, 16:51:07 UTC
Date Of Original Report
22 Dec 2025
Previous filing
26 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
CAMPBELL REID TARLTON Director C/O WHITE MOUNTAINS INSURANCE GROUP, LTD, 23 SOUTH MAIN STREET, SUITE 3B, HANOVER Wesley C Bell, by Power of Attorney 22 Dec 2025 0001378156

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WTM Common Shares Sale $10,250,000 -5,000 -32% $2050.00 10,440 19 Dec 2025 Direct
holding WTM Common Shares 119 19 Dec 2025 by 401(k)
* An asterisk sign (*) next to the price indicates that the price is likely invalid.