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White Mountains Insurance Group Ltd
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Fire, Marine & Casualty Insurance
NYSE.WTM
23 South Main Street, Suite 3b, Hanover, NH, 03755
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Ownership by Owner
Insider Transactions
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Ownership
SC 13G/A
12 Nov 24
13F-HR
Quarterly Holdings Report
12 Nov 24
13F-HR
Quarterly Holdings Report
08 Aug 24
3
Harrison Giles E
10 Jun 24
4
Harrison Giles E
10 Jun 24
11-K
Annual Report Of Employee Stock Purchase, Savings, And Similar Plans.
31 May 24
4
Tanner David Allen
24 May 24
News
8-K
Results Of Operations And Financial Condition, Financial Statements And Exhibits
06 Nov 24
8-K
Results Of Operations And Financial Condition, Financial Statements And Exhibits
07 Aug 24
8-K
Regulation Fd Disclosure, Financial Statements And Exhibits
07 Jun 24
8-K
Submission Of Matters To A Vote Of Security Holders
23 May 24
8-K
Results Of Operations And Financial Condition, Financial Statements And Exhibits
09 May 24
8-K
Departure Of Directors Or Certain Officers; Election Of Directors; Appointment Of Certain Officers: Compensatory Arrangements Of Certain Officers, Financial Statements And Exhibits
10 Apr 24
8-K
Departure Of Directors Or Certain Officers; Election Of Directors; Appointment Of Certain Officers: Compensatory Arrangements Of Certain Officers, Financial Statements And Exhibits
23 Feb 24
Prospectuses and Registrations
SC TO-T/A
Amended Tender Offer Statement By Third Party.
30 Jun 23
SC TO-T/A
Amended Tender Offer Statement By Third Party.
27 Jun 23
SC TO-T
Tender Offer Statement By Third Party.
26 May 23
SC TO-I/A
Amendment To The Tender Offer Statement By Issuer.
26 Sep 22
SC TO-I/A
Amendment To The Tender Offer Statement By Issuer.
21 Sep 22
SC TO-I/A
Amendment To The Tender Offer Statement By Issuer.
30 Aug 22
SC TO-I
Tender Offer Statement By Issuer.
22 Aug 22
Other
ARS
Scanned Paper Annual Report Submission.
04 Apr 24
11-K
Annual Report Of Employee Stock Purchase, Savings, And Similar Plans.
15 Jun 23
ARS
Scanned Paper Annual Report Submission.
05 Apr 23
11-K
Annual Report Of Employee Stock Purchase, Savings, And Similar Plans.
14 Jun 22
11-K
Annual Report Of Employee Stock Purchase, Savings, And Similar Plans.
15 Jun 21
10-K/A
Fiscal Year 2020
30 Mar 21
13F-NT
12 Nov 20
Proxies
N-PX
29 Aug 24
DEF 14A
Definitive Proxy Statement Provided In Advance Of A Shareholder Meeting.
04 Apr 24
DEFA14A
Additional Definitive Proxy Soliciting Materials And Rule 14(a)(12) Material.
10 May 23
DEFR14A
Definitive Revised Proxy Soliciting Materials (revised Material).
06 Apr 23
DEF 14A
Definitive Proxy Statement Provided In Advance Of A Shareholder Meeting.
05 Apr 23
DEFA14A
Additional Definitive Proxy Soliciting Materials And Rule 14(a)(12) Material.
16 May 22
DEF 14A
Definitive Proxy Statement Provided In Advance Of A Shareholder Meeting.
06 Apr 22
Financials
10-Q
Quarterly Filing
06 Nov 24
10-Q
Quarterly Filing
07 Aug 24
10-Q
Quarterly Filing
09 May 24
10-K
Fiscal Year 2023
26 Feb 24
10-Q
Quarterly Filing
06 Nov 23
10-Q
Quarterly Filing
07 Aug 23
10-Q
Quarter 2
09 May 23