Michaela Hildreth - 25 Feb 2026 Form 4 Insider Report for WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)

Role
MD & Chief Accounting Officer
Signature
Wesley C Bell, by Power of Attorney
Issuer symbol
WTM
Transactions as of
25 Feb 2026
Net transactions value
$0
Form type
4
Filing time
27 Feb 2026, 11:18:22 UTC
Previous filing
05 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Hildreth Michaela MD & Chief Accounting Officer C/O WHITE MOUNTAINS INSURANCE GROUP, LTD, 23 SOUTH MAIN STREET, SUITE 3B, HANOVER Wesley C Bell, by Power of Attorney 25 Feb 2026 0001863001

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WTM Common Shares (Restricted) Award $0 +600 +49% $0.000000 1,825 25 Feb 2026 Direct F1
holding WTM Common Shares 2,491 25 Feb 2026 Direct
holding WTM Common Shares 20 25 Feb 2026 by 401(k)
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On February 25, 2026, the Reporting Person received a restricted share award of 600 Common Shares, which vests on January 1, 2029.