Michael A. Papamichael - 25 Feb 2026 Form 4 Insider Report for WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)

Role
Chief Financial 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, 11:17:59 UTC
Previous filing
02 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Papamichael Michael A Chief Financial 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 0002090784

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WTM Common Shares (Restricted) Award $0 +500 +71% $0.000000 1,200 25 Feb 2026 Direct F1
holding WTM Common Shares 772 25 Feb 2026 Direct
holding WTM Common Shares 12 25 Feb 2026 by White Mountains Retirement Plan
* 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 500 Common Shares, which vests on January 1, 2029.