Latest filings (excl ownership)
8-K
Departure of Directors or Certain Officers
10 Apr 24
ARS
2023 FY
Annual report to shareholders
4 Apr 24
DEF 14A
Definitive proxy
4 Apr 24
10-K
2023 FY
Annual report
26 Feb 24
8-K
Reid T. Campbell Elected to the White Mountains Board
23 Feb 24
8-K
White Mountains Reports Fourth Quarter Results
7 Feb 24
8-K
Other Events
2 Jan 24
8-K
Other Events
21 Dec 23
10-Q
2023 Q3
Quarterly report
6 Nov 23
8-K
White Mountains Reports Third Quarter Results
6 Nov 23
8-K
White Mountains to Acquire a Majority Stake in Bamboo
20 Oct 23
10-Q
2023 Q2
Quarterly report
7 Aug 23
8-K
White Mountains Reports Second Quarter Results
7 Aug 23
SC TO-T/A
Third party tender offer statement (amended)
30 Jun 23
SC TO-T/A
Third party tender offer statement (amended)
27 Jun 23
8-K
Regulation FD Disclosure
6 Jun 23
SC TO-T
Third party tender offer statement
26 May 23
8-K
Submission of Matters to a Vote of Security Holders
25 May 23
8-K
Weston M. Hicks Elected Chairman
25 May 23
DEFA14A
Additional proxy soliciting materials
10 May 23
10-Q
2023 Q1
Quarterly report
9 May 23
8-K
White Mountains Reports First Quarter Results
9 May 23
DEFR14A
Revised proxy
6 Apr 23
ARS
2022 FY
Annual report to shareholders
5 Apr 23
DEF 14A
Definitive proxy
5 Apr 23
10-K
2022 FY
Annual report
27 Feb 23
8-K
Weston M. Hicks Elected to the White Mountains Board
23 Feb 23
8-K
White Mountains Reports Fourth Quarter Results
7 Feb 23
8-K
Other Events
21 Dec 22
10-Q
2022 Q3
Quarterly report
7 Nov 22
8-K
White Mountains Reports Third Quarter Results
7 Nov 22
SC TO-I/A
Issuer tender offer statement (amended)
26 Sep 22
SC TO-I/A
Issuer tender offer statement (amended)
21 Sep 22
SC TO-I/A
Issuer tender offer statement (amended)
30 Aug 22
SC TO-I
Issuer tender offer statement
22 Aug 22
8-K
White Mountains Reports Second Quarter Results
8 Aug 22
10-Q
2022 Q2
Quarterly report
8 Aug 22
8-K
White Mountains Completes Sale of NSM
5 Aug 22
8-K
Regulation FD Disclosure
10 Jun 22
8-K
Other Events
26 May 22
Latest ownership filings
4
REID TARLTON CAMPBELL
21 Mar 24
4
George Manning Rountree
23 Feb 24
4
Liam P Caffrey
23 Feb 24
4
ROBERT LAWRENCE SEELIG
23 Feb 24
4
Michaela Hildreth
23 Feb 24
4
REID TARLTON CAMPBELL
23 Feb 24
SC 13G/A
VANGUARD GROUP INC
13 Feb 24
13F-HR
Quarterly holdings report by institutional manager
13 Feb 24
SC 13G/A
FULLER & THALER ASSET MANAGEMENT, INC.
12 Feb 24
SC 13G/A
MORGAN STANLEY
9 Feb 24
SC 13G/A
DIMENSIONAL FUND ADVISORS LP
9 Feb 24
SC 13D/A
MediaAlpha, Inc.
3 Jan 24
4
George Manning Rountree
2 Jan 24
4
REID TARLTON CAMPBELL
2 Jan 24
4
ROBERT LAWRENCE SEELIG
2 Jan 24
4
Michaela Hildreth
2 Jan 24
4
Michaela Hildreth
1 Dec 23
4/A
Weston M Hicks
20 Nov 23
4
Weston M Hicks
20 Nov 23
13F-HR
Quarterly holdings report by institutional manager
9 Nov 23
SC 13D/A
MediaAlpha, Inc.
2 Nov 23
13F-HR
Quarterly holdings report by institutional manager
10 Aug 23
SC 13D
MediaAlpha, Inc.
30 Jun 23
4
MediaAlpha, Inc.
30 Jun 23
11-K
Annual report of employee stock purchases
15 Jun 23
SC 13G/A
River Road Asset Management, LLC
8 Jun 23
4
Peter M Carlson
30 May 23
4
Margaret Dillon
26 May 23
4
David Allen Tanner
26 May 23
4
SUZANNE F. SHANK
26 May 23
4
Philip A Gelston
26 May 23
4
MARY C CHOKSI
26 May 23
4
Weston M Hicks
26 May 23
4
Steven Yi
26 May 23
3
Steven Yi
26 May 23
13F-HR
Quarterly holdings report by institutional manager
11 May 23
SC 13G/A
VANGUARD GROUP INC
10 Mar 23
4
George Manning Rountree
24 Feb 23
4
Liam P Caffrey
24 Feb 23
4
ROBERT LAWRENCE SEELIG
24 Feb 23