Form 8-K - Current report:
SEC Accession No. 0000776867-25-000008
Filing Date
2025-06-06
Accepted
2025-06-06 07:59:51
Documents
83
Period of Report
2025-06-06
Items
Item 7.01: Regulation FD Disclosure
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K wtm-20250606.htm   iXBRL 8-K 23213
2 EX-99.1 wtm8-k2025exhibit991.htm EX-99.1 78559
6 wtm8-k2025exhibit991001.jpg GRAPHIC 49518
7 wtm8-k2025exhibit991002.jpg GRAPHIC 208692
8 wtm8-k2025exhibit991003.jpg GRAPHIC 105860
9 wtm8-k2025exhibit991004.jpg GRAPHIC 29834
10 wtm8-k2025exhibit991005.jpg GRAPHIC 29995
11 wtm8-k2025exhibit991006.jpg GRAPHIC 66492
12 wtm8-k2025exhibit991007.jpg GRAPHIC 66513
13 wtm8-k2025exhibit991008.jpg GRAPHIC 31986
14 wtm8-k2025exhibit991009.jpg GRAPHIC 87864
15 wtm8-k2025exhibit991010.jpg GRAPHIC 59244
16 wtm8-k2025exhibit991011.jpg GRAPHIC 31006
17 wtm8-k2025exhibit991012.jpg GRAPHIC 70085
18 wtm8-k2025exhibit991013.jpg GRAPHIC 104576
19 wtm8-k2025exhibit991014.jpg GRAPHIC 71683
20 wtm8-k2025exhibit991015.jpg GRAPHIC 70881
21 wtm8-k2025exhibit991016.jpg GRAPHIC 75798
22 wtm8-k2025exhibit991017.jpg GRAPHIC 109566
23 wtm8-k2025exhibit991018.jpg GRAPHIC 69662
24 wtm8-k2025exhibit991019.jpg GRAPHIC 64040
25 wtm8-k2025exhibit991020.jpg GRAPHIC 89914
26 wtm8-k2025exhibit991021.jpg GRAPHIC 95452
27 wtm8-k2025exhibit991022.jpg GRAPHIC 83771
28 wtm8-k2025exhibit991023.jpg GRAPHIC 73938
29 wtm8-k2025exhibit991024.jpg GRAPHIC 75702
30 wtm8-k2025exhibit991025.jpg GRAPHIC 72750
31 wtm8-k2025exhibit991026.jpg GRAPHIC 86013
32 wtm8-k2025exhibit991027.jpg GRAPHIC 101689
33 wtm8-k2025exhibit991028.jpg GRAPHIC 79496
34 wtm8-k2025exhibit991029.jpg GRAPHIC 100858
35 wtm8-k2025exhibit991030.jpg GRAPHIC 95588
36 wtm8-k2025exhibit991031.jpg GRAPHIC 75224
37 wtm8-k2025exhibit991032.jpg GRAPHIC 98404
38 wtm8-k2025exhibit991033.jpg GRAPHIC 73899
39 wtm8-k2025exhibit991034.jpg GRAPHIC 101411
40 wtm8-k2025exhibit991035.jpg GRAPHIC 128646
41 wtm8-k2025exhibit991036.jpg GRAPHIC 100818
42 wtm8-k2025exhibit991037.jpg GRAPHIC 93730
43 wtm8-k2025exhibit991038.jpg GRAPHIC 80570
44 wtm8-k2025exhibit991039.jpg GRAPHIC 94951
45 wtm8-k2025exhibit991040.jpg GRAPHIC 85734
46 wtm8-k2025exhibit991041.jpg GRAPHIC 91247
47 wtm8-k2025exhibit991042.jpg GRAPHIC 91142
48 wtm8-k2025exhibit991043.jpg GRAPHIC 92504
49 wtm8-k2025exhibit991044.jpg GRAPHIC 85838
50 wtm8-k2025exhibit991045.jpg GRAPHIC 100046
51 wtm8-k2025exhibit991046.jpg GRAPHIC 29568
52 wtm8-k2025exhibit991047.jpg GRAPHIC 74591
53 wtm8-k2025exhibit991048.jpg GRAPHIC 82797
54 wtm8-k2025exhibit991049.jpg GRAPHIC 94598
55 wtm8-k2025exhibit991050.jpg GRAPHIC 30190
56 wtm8-k2025exhibit991051.jpg GRAPHIC 69179
57 wtm8-k2025exhibit991052.jpg GRAPHIC 91798
58 wtm8-k2025exhibit991053.jpg GRAPHIC 112620
59 wtm8-k2025exhibit991054.jpg GRAPHIC 33382
60 wtm8-k2025exhibit991055.jpg GRAPHIC 266540
61 wtm8-k2025exhibit991056.jpg GRAPHIC 162906
62 wtm8-k2025exhibit991057.jpg GRAPHIC 97822
63 wtm8-k2025exhibit991058.jpg GRAPHIC 98206
64 wtm8-k2025exhibit991059.jpg GRAPHIC 82505
65 wtm8-k2025exhibit991060.jpg GRAPHIC 127707
66 wtm8-k2025exhibit991061.jpg GRAPHIC 129599
67 wtm8-k2025exhibit991062.jpg GRAPHIC 86158
68 wtm8-k2025exhibit991063.jpg GRAPHIC 116584
69 wtm8-k2025exhibit991064.jpg GRAPHIC 112049
70 wtm8-k2025exhibit991065.jpg GRAPHIC 56927
71 wtm8-k2025exhibit991066.jpg GRAPHIC 124201
72 wtm8-k2025exhibit991067.jpg GRAPHIC 130265
73 wtm8-k2025exhibit991068.jpg GRAPHIC 105053
74 wtm8-k2025exhibit991069.jpg GRAPHIC 122059
75 wtm8-k2025exhibit991070.jpg GRAPHIC 54730
  Complete submission text file 0000776867-25-000008.txt   8849354

Data Files

Seq Description Document Type Size
3 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT wtm-20250606.xsd EX-101.SCH 1872
4 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT wtm-20250606_lab.xml EX-101.LAB 21629
5 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT wtm-20250606_pre.xml EX-101.PRE 12590
86 EXTRACTED XBRL INSTANCE DOCUMENT wtm-20250606_htm.xml XML 3646
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: 8-K | Act: 34 | File No.: 001-08993 | Film No.: 251028912
SIC: 6331 Fire, Marine & Casualty Insurance
(CF Office: 02 Finance)