WHITE MOUNTAINS INSURANCE GROUP LTD reports

Company location: Hanover, NH
Fiscal year end: 31 December

WHITE MOUNTAINS INSURANCE GROUP LTD has filed 1,753 SEC EDGAR filings since 09 Feb 1994

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SEC filing history

Showing 376-400 of 1,000 matching filings.

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25

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16

8-K File 001-08993

8-K

Filing date: 23 Mar 2020
Reporting date: 20 Mar 2020
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SC 13G/A File 005-36786

SCHEDULE 13G/A

Filing date: 06 Mar 2020
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Mar 2020
Reporting date: 27 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Mar 2020
Reporting date: 27 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Mar 2020
Reporting date: 27 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Mar 2020
Reporting date: 27 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Mar 2020
Reporting date: 27 Feb 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 001-08993

10-K

Filing date: 02 Mar 2020
Reporting date: 31 Dec 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

13F-NT File 028-01681

13F-NT filing

Filing date: 12 Feb 2020
Reporting date: 31 Dec 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-36786

SCHEDULE 13G/A

Filing date: 12 Feb 2020
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-36786

ROBECO INVESTMENT MANAGEMENT INC.

Filing date: 11 Feb 2020
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-08993

8-K

Filing date: 05 Feb 2020
Reporting date: 05 Feb 2020
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SC 13G/A File 005-36786

SEC SCHEDULE 13G

Filing date: 27 Jan 2020
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Jan 2020
Reporting date: 01 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Jan 2020
Reporting date: 01 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Jan 2020
Reporting date: 01 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Jan 2020
Reporting date: 01 Jan 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 20 Dec 2019
Reporting date: 17 Dec 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 11 Dec 2019
Reporting date: 10 Dec 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-01681

13F-NT filing

Filing date: 12 Nov 2019
Reporting date: 30 Sep 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-08993

10-Q

Filing date: 06 Nov 2019
Reporting date: 30 Sep 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-08993

8-K

Filing date: 06 Nov 2019
Reporting date: 06 Nov 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 30 Sep 2019
Reporting date: 24 Sep 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 Sep 2019
Reporting date: 25 Sep 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-08993

8-K

Filing date: 30 Aug 2019
Reporting date: 29 Aug 2019
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

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