# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001445305-13-000401
Filing Date
2013-03-01
Accepted
2013-02-28 19:53:43
Documents
23
Period of Report
2012-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | wtm-20121231x10k.htm | 10-K | 7687074
2 | EXHIBIT 1 | wtm-20121231x10kxex1.htm | EX-1.0 | 312371
3 | EXHIBIT 3.2 | wtm-20121231x10kxex32.htm | EX-3.2 | 279616
4 | EXHIBIT 4.3 | wtm-20121231x10kxex43.htm | EX-4.3 | 503289
5 | EXHIBIT 4.4 | wtm-20121231x10kxex44.htm | EX-4.4 | 102845
6 | EXHIBIT 10.16 | wtm-20121231x10xkxex1016.htm | EX-10.16 | 149851
7 | EXHIBIT 10.20 | wtm-20121231x10kxex1020.htm | EX-10.20 | 15030
8 | EXHIBIT 12 | wtm-20121231x10xkxex12.htm | EX-12.0 | 28952
9 | EXHIBIT 21 | wtm-20121231x10xkxex21.htm | EX-21.0 | 48950
10 | EXHIBIT 23 | wtm-20121231x10kxex23.htm | EX-23.0 | 2026
11 | EXHIBIT 24 | wtm-20121231x10kxex24.htm | EX-24.0 | 30460
12 | EXHIBIT 31.1 | wtm-20121231x10kxex311.htm | EX-31.1 | 12590
13 | EXHIBIT 31.2 | wtm-20121231x10kxex312.htm | EX-31.2 | 12599
14 | EXHIBIT 32.1 | wtm-20121231x10kxex321.htm | EX-32.1 | 7144
15 | EXHIBIT 32.2 | wtm-20121231x10kxex322.htm | EX-32.2 | 7167
22 |  | onebeaconunderwriting_image1.gif | GRAPHIC | 4257
23 |  | wtm2012123110kchart.jpg | GRAPHIC | 264234
| Complete submission text file | 0001445305-13-000401.txt |  | 57076510

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
16 | XBRL INSTANCE DOCUMENT | wtm-20121231.xml | EX-101.INS | 11253511
17 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | wtm-20121231.xsd | EX-101.SCH | 292957
18 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | wtm-20121231_cal.xml | EX-101.CAL | 234947
19 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | wtm-20121231_def.xml | EX-101.DEF | 1634960
20 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | wtm-20121231_lab.xml | EX-101.LAB | 2784786
21 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | wtm-20121231_pre.xml | EX-101.PRE | 1897304

Mailing Address 80 SOUTH MAIN STREET HANOVER NH 03755
Business Address 80 SOUTH MAIN ST 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.: 13654416
SIC: 6331 Fire, Marine & Casualty Insurance