# 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)

EIN.: 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