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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)

IRS No.: 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