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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000776867-22-000002
Filing Date
2022-02-28
Accepted
2022-02-28 17:21:38
Documents
172
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 10-K wtm-20211231.htm   iXBRL 10-K 9260059
2 EX-4 wtm10-k2021exhibit4.htm EX-4 15595
3 EX-21 wtm10-k2021exhibit21.htm EX-21 42584
4 EX-23.1 wtm10-k2021exhibit231.htm EX-23.1 1760
5 EX-23.2 wtm10-k2021exhibit232.htm EX-23.2 1881
6 EX-23.3 wtm10-k2021exhibit233.htm EX-23.3 1780
7 EX-24 wtm10-k2021exhibit24.htm EX-24 24854
8 EX-31.1 wtm10-k2021exhibit311.htm EX-31.1 9250
9 EX-31.2 wtm10-k2021exhibit312.htm EX-31.2 9186
10 EX-32.1 wtm10-k2021exhibit321.htm EX-32.1 6843
11 EX-32.2 wtm10-k2021exhibit322.htm EX-32.2 7002
17 wtm-20211231_g1.jpg GRAPHIC 99112
  Complete submission text file 0000776867-22-000002.txt   36928240

Data Files

Seq Description Document Type Size
12 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT wtm-20211231.xsd EX-101.SCH 174704
13 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT wtm-20211231_cal.xml EX-101.CAL 182761
14 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT wtm-20211231_def.xml EX-101.DEF 1349733
15 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT wtm-20211231_lab.xml EX-101.LAB 1768854
16 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT wtm-20211231_pre.xml EX-101.PRE 1572437
166 EXTRACTED XBRL INSTANCE DOCUMENT wtm-20211231_htm.xml XML 8608658
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.: 22691571
SIC: 6331 Fire, Marine & Casualty Insurance