Philip A. Gelston - 16 Dec 2025 Form 4 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
16 Dec 2025
Net transactions value
-$338,004
Form type
4
Filing time
16 Dec 2025, 20:41:57 UTC
Previous filing
23 May 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gelston Philip A Director C/O WHITE MOUNTAINS INSURANCE GROUP, LTD, 23 SOUTH MAIN STREET, SUITE 3B, HANOVER Wesley C. Bell, by Power of Attorney 16 Dec 2025 0001733327

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WTM Common Shares Sale $338,004 -165 -9.5% $2048.51 1,568 16 Dec 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.