WHITE MOUNTAINS INSURANCE GROUP LTD — 3 Filings
39 3 filings on record
This page lists all 3 filings submitted to the SEC by WHITE MOUNTAINS INSURANCE GROUP LTD (WTM), sorted by most recent first. Each row links to the full filing on EdgarLookup. WHITE MOUNTAINS INSURANCE GROUP LTD has filed 39 3 documents with the SEC since 2009. To view all SEC filings by WHITE MOUNTAINS INSURANCE GROUP LTD, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
11-K
13F-HR
13F-NT
3
3/A
4
4/A
424B3
5
8-A12B
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
DEFM14A
DEFR14A
N-PX
NT 11-K
PRE 14A
S-3
S-3/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13E4
SC 13E4/A
SC 13G
SC 13G/A
SC TO-C
SC TO-I
SC TO-I/A
SC TO-T
SC TO-T/A
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 3 | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 0000776867-26-000008 | Jan 2, 2026 | Jan 1, 2026 |
| 3 | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-24-012248 | Jun 10, 2024 | — |
| 3 | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-012305 | May 26, 2023 | May 25, 2023 |
| 3 | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-004484 | Feb 23, 2023 | Feb 22, 2023 |
| 3 | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-22-006961 | Mar 7, 2022 | Mar 1, 2022 |
| 3 | PRIMARY DOCUMENT | 0001668244-21-000030 | Oct 12, 2021 | Oct 10, 2021 |
| 3 | PRIMARY DOCUMENT | 0001668244-21-000022 | May 28, 2021 | May 27, 2021 |
| 3 | PRIMARY DOCUMENT | 0001668244-21-000015 | May 20, 2021 | May 14, 2021 |
| 3 | FORM 3 SUBMISSION | 0000899243-20-029452 | Oct 28, 2020 | — |
| 3 | PRIMARY DOCUMENT | 0001668244-19-000026 | May 3, 2019 | May 1, 2019 |
| 3 | PRIMARY DOCUMENT | 0001668244-19-000006 | Mar 1, 2019 | Feb 27, 2019 |
| 3 | PRIMARY DOCUMENT | 0001668244-18-000028 | Aug 27, 2018 | Aug 23, 2018 |
| 3 | PRIMARY DOCUMENT | 0001668244-18-000010 | Mar 5, 2018 | Mar 1, 2018 |
| 3 | PRIMARY DOCUMENT | 0001668244-17-000032 | Aug 28, 2017 | Aug 24, 2017 |
| 3 | PRIMARY DOCUMENT | 0001668244-16-000001 | Mar 4, 2016 | Feb 25, 2016 |
| 3 | PRIMARY DOCUMENT | 0001327330-15-000029 | Jun 10, 2015 | Jun 8, 2015 |
| 3 | PRIMARY DOCUMENT | 0001327330-13-000012 | Mar 1, 2013 | Feb 27, 2013 |
| 3 | PRIMARY DOCUMENT | 0001327330-13-000007 | Feb 6, 2013 | Feb 5, 2013 |
| 3 | PRIMARY DOCUMENT | 0001327330-12-000017 | Apr 2, 2012 | Mar 28, 2012 |
| 3 | PRIMARY DOCUMENT | 0001327330-10-000012 | Jan 21, 2010 | — |
| 3 | PRIMARY DOCUMENT | 0001327330-09-000026 | Mar 6, 2009 | Feb 26, 2009 |
| 3 | PRIMARY DOCUMENT | 0001327330-07-000029 | Aug 27, 2007 | Aug 23, 2007 |
| 3 | PRIMARY DOCUMENT | 0001327330-07-000023 | Jun 1, 2007 | May 24, 2007 |
| 3 | PRIMARY DOCUMENT | 0001181386-06-000033 | Dec 11, 2006 | Nov 16, 2006 |
| 3 | PRIMARY DOCUMENT | 0001181386-06-000030 | Nov 6, 2006 | — |
| 3 | PRIMARY DOCUMENT | 0001181386-06-000019 | Aug 11, 2006 | Aug 3, 2006 |
| 3 | PRIMARY DOCUMENT | 0001181386-06-000003 | Feb 10, 2006 | Feb 6, 2006 |
| 3 | PRIMARY DOCUMENT | 0001181386-05-000041 | Nov 21, 2005 | Nov 17, 2005 |
| 3 | PRIMARY DOCUMENT | 0001181386-05-000026 | Aug 10, 2005 | Aug 1, 2005 |
| 3 | PRIMARY DOCUMENT | 0001181386-05-000024 | Jul 8, 2005 | Jul 1, 2005 |
| 3 | PRIMARY DOCUMENT | 0001181386-05-000019 | Jun 21, 2005 | Jun 20, 2005 |
| 3 | PRIMARY DOCUMENT | 0001181386-05-000017 | May 20, 2005 | May 19, 2005 |
| 3 | PRIMARY DOCUMENT | 0001181386-05-000005 | Feb 14, 2005 | — |
| 3 | PRIMARY DOCUMENT | 0001181386-04-000029 | Aug 30, 2004 | Aug 26, 2004 |
| 3 | PRIMARY DOCUMENT | 0001181386-04-000027 | May 24, 2004 | May 21, 2004 |
| 3 | PRIMARY DOCUMENT | 0001181374-03-000016 | Nov 25, 2003 | Nov 20, 2003 |
| 3 | PRIMARY DOCUMENT | 0001181374-03-000015 | Nov 25, 2003 | Nov 20, 2003 |
| 3 | 3 | 0001221318-03-000002 | Apr 1, 2003 | — |
| 3 | FORM 3 | 0000898080-02-000383 | Oct 9, 2002 | — |