<SEC-DOCUMENT>0001628280-25-044062-index.html : 20251003 <SEC-HEADER>0001628280-25-044062.hdr.sgml : 20251003 <ACCEPTANCE-DATETIME>20251003162021 ACCESSION NUMBER: 0001628280-25-044062 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 139 CONFORMED PERIOD OF REPORT: 20251002 ITEM INFORMATION: Entry into a Material Definitive Agreement ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20251003 DATE AS OF CHANGE: 20251003 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WHITE MOUNTAINS INSURANCE GROUP LTD CENTRAL INDEX KEY: 0000776867 STANDARD INDUSTRIAL CLASSIFICATION: FIRE, MARINE & CASUALTY INSURANCE [6331] ORGANIZATION NAME: 02 Finance EIN: 942708455 STATE OF INCORPORATION: D0 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-08993 FILM NUMBER: 251374162 BUSINESS ADDRESS: STREET 1: 23 SOUTH MAIN STREET STREET 2: SUITE 3B CITY: HANOVER STATE: NH ZIP: 03755 BUSINESS PHONE: 603 640 2200 MAIL ADDRESS: STREET 1: 23 SOUTH MAIN STREET STREET 2: SUITE 3B CITY: HANOVER STATE: NH ZIP: 03755 FORMER COMPANY: FORMER CONFORMED NAME: WHITE MOUNTAINS INSURANCE GROUP INC DATE OF NAME CHANGE: 19990603 FORMER COMPANY: FORMER CONFORMED NAME: FUND AMERICAN ENTERPRISES HOLDINGS INC DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: FUND AMERICAN COMPANIES INC DATE OF NAME CHANGE: 19920701 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>wtm-20251002.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: wtm-20251002.htm
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