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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000776867-23-000004
Filing Date
2023-02-27
Accepted
2023-02-27 16:47:41
Documents
167
Period of Report
2022-12-31

Document Format Files

Seq Description Document Type Size
1 10-K wtm-20221231.htm   iXBRL 10-K 8516866
2 EX-4 wtm10-k2022exhibit4.htm EX-4 15594
3 EX-21 wtm10-k2022exhibit21.htm EX-21 23770
4 EX-23.1 wtm10-k2022exhibit231.htm EX-23.1 1754
5 EX-23.2 wtm10-k2022exhibit232.htm EX-23.2 1878
6 EX-24 wtm10-k2022exhibit24.htm EX-24 28271
7 EX-31.1 wtm10-k2022exhibit311.htm EX-31.1 9250
8 EX-31.2 wtm10-k2022exhibit312.htm EX-31.2 9185
9 EX-32.1 wtm10-k2022exhibit321.htm EX-32.1 6785
10 EX-32.2 wtm10-k2022exhibit322.htm EX-32.2 7000
16 wtm-20221231_g1.jpg GRAPHIC 98258
  Complete submission text file 0000776867-23-000004.txt   34264557

Data Files

Seq Description Document Type Size
11 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT wtm-20221231.xsd EX-101.SCH 172097
12 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT wtm-20221231_cal.xml EX-101.CAL 189538
13 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT wtm-20221231_def.xml EX-101.DEF 1312492
14 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT wtm-20221231_lab.xml EX-101.LAB 1727867
15 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT wtm-20221231_pre.xml EX-101.PRE 1507694
161 EXTRACTED XBRL INSTANCE DOCUMENT wtm-20221231_htm.xml XML 7789348
Mailing Address 23 SOUTH MAIN STREET SUITE 3B HANOVER NH 03755
Business Address 23 SOUTH MAIN STREET SUITE 3B HANOVER NH 03755 603 640 2200
WHITE MOUNTAINS INSURANCE GROUP LTD (Filer) CIK: 0000776867 (see all company filings)

IRS No.: 942708455 | State of Incorp.: D0 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-08993 | Film No.: 23675938
SIC: 6331 Fire, Marine & Casualty Insurance