# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000776867-24-000005
Filing Date
2024-02-26
Accepted
2024-02-26 08:58:07
Documents
156
Period of Report
2023-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | wtm-20231231.htm iXBRL | 10-K | 7152997
2 | EX-4 | wtm10-k2023exhibit4.htm | EX-4 | 15492
3 | EX-21 | wtm10-k2023exhibit21.htm | EX-21 | 25935
4 | EX-23.1 | wtm10-k2023exhibit231.htm | EX-23.1 | 1721
5 | EX-23.2 | wtm10-k2023exhibit232.htm | EX-23.2 | 1846
6 | EX-24 | wtm10-k2023exhibit24.htm | EX-24 | 32442
7 | EX-31.1 | wtm10-k2023exhibit311.htm | EX-31.1 | 9148
8 | EX-31.2 | wtm10-k2023exhibit312.htm | EX-31.2 | 9081
9 | EX-32.1 | wtm10-k2023exhibit321.htm | EX-32.1 | 6683
10 | EX-32.2 | wtm10-k2023exhibit322.htm | EX-32.2 | 6898
11 | EX-97.1 | wtm10-k2023exhibit971.htm | EX-97.1 | 16907
17 |  | wtm-20231231_g1.jpg | GRAPHIC | 101390
| Complete submission text file | 0000776867-24-000005.txt |  | 31874863

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
12 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | wtm-20231231.xsd | EX-101.SCH | 173501
13 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | wtm-20231231_cal.xml | EX-101.CAL | 220365
14 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | wtm-20231231_def.xml | EX-101.DEF | 1184540
15 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | wtm-20231231_lab.xml | EX-101.LAB | 1760654
16 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | wtm-20231231_pre.xml | EX-101.PRE | 1414891
157 | EXTRACTED XBRL INSTANCE DOCUMENT | wtm-20231231_htm.xml | XML | 6548096

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.: 24673767
SIC: 6331 Fire, Marine & Casualty Insurance
(CF Office: 02 Finance)