Insider Holders & Insider Ownership - WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)

List of insiders holdings for WHITE MOUNTAINS INSURANCE GROUP LTD:
  1. Shares directly owned by the insider.
  2. Shares indirectly owned by the insider.
  3. Total shares owned by the insider (sum of shares directly and indirectly owned).
  4. Total market value if available.
  5. Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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#Insider Holder NameReport
Date Time
Shares Owned
Directly
Indirectly
Total
Shares Owned
Filing
1BYRNE JOHN JOSEPH
10% Owner
2013-02-06 16:03:33207,396
429,721
637,117Form 3
2BYRNE MARK JAMES
Director
2004-02-10 08:21:160
222,156
222,156Form 5
3KEMP KARL THOMAS
Director
2004-03-26 08:33:5271,390
23,629
95,019Form 4
4BERKSHIRE HATHAWAY INC
BUFFETT WARREN E
GENERAL RE CORP
GENERAL REINSURANCE CORP
10% Owner
2008-11-03 15:02:1689,279
0
89,279Form 13G
5BARRETTE RAYMOND JOSEPH RENE
Chief Executive Officer
2017-03-03 16:07:4945,988
12,866
58,854Form 4
6GILLESPIE JOHN DAVIES
Director
2015-02-11 14:55:193,025
50,014
53,039Form 5
7FASS STEVE ELLIOTT
Director
2007-02-27 16:22:3733,104
4,043
37,147Form 4
8FOY DAVID THOMAS
Chief Financial Officer
2017-05-26 16:33:1730,537
76
30,613Form 4
9Rountree George Manning
Chief Executive Officer
2025-02-28 09:33:1724,234
120
24,354Form 4
10WATERS ALLAN LEWIS
CEO - Sirius Int'l Ins. Group
2015-02-27 15:24:5713,854
8,120
21,974Form 4
11SEELIG ROBERT LAWRENCE
EVP & General Counsel
2025-02-28 09:23:4020,030
584
20,614Form 4
12CAMPBELL REID TARLTON
Director
2025-05-23 19:08:5715,490
119
15,609Form 4
13ZANKEL ARTHUR
Director
2004-02-10 08:33:108,600
0
8,600Form 5
14COCHRAN ROBERT PHILLIPS
Director
2011-05-31 17:34:368,045
0
8,045Form 4
15DAVIS MORGAN W
Director
2022-12-29 09:26:526,709
1,030
7,739Form 4
16Linker David
Chief Investment Officer
2017-03-03 16:24:296,153
15
6,168Form 4
17Caffrey Liam P
EVP& Chief Financial Officer
2025-02-28 09:32:324,230
6
4,236Form 4
18Brouillette Yves
Director
2019-05-28 17:21:534,121
0
4,121Form 4
19Hildreth Michaela
MD & Chief Accounting Officer
2025-02-28 09:23:024,050
18
4,068Form 4
20Oberting Kernan V
Managing Director
Director
2016-01-05 14:24:213,899
23
3,922Form 4
21Bazos Frank R
EVP and Head of M&A
2020-03-02 16:16:493,600
0
3,600Form 4
22PALMER JESS BRIAN
Chief Accounting Officer
2021-01-04 16:00:292,653
411
3,064Form 4
23HOLIDAY EDITH E
Director
2020-05-22 16:05:512,827
0
2,827Form 4
24Hicks Weston M
Director
2025-05-23 19:10:502,746
0
2,746Form 4
25Frinquelli Angelo Michael
Director
2017-11-22 10:07:551,641
1000
2,641Form 4
26Tolman Gary Charles
Director
2018-05-25 12:44:041,822
798
2,620Form 4
27CHOKEL CHARLES BERGEN
CFO - White Mountains Re Group
2008-06-27 13:08:231,873
451
2,324Form 4
28Tanner David Allen
Director
2025-05-23 19:11:562,108
0
2,108Form 4
29Harrison Giles E
EVP & Chief Strategy Officer
2025-02-28 09:31:371,900
0
1,900Form 4
30CHOKSI MARY C
Director
2025-05-23 19:09:431,858
0
1,858Form 4
31Gelston Philip A
Director
2025-05-23 19:10:231,733
0
1,733Form 4
32CAVOORES JOHN PAUL
Pres & CEO, OneBeacon
2004-04-30 08:48:331,450
15
1,465Form 4
33GILLESPIE GEORGE JOSEPH III
Director
2010-07-16 14:27:171,400
0
1,400Form 4
34CLARK HOWARD LONGSTRETH JR
Director
2013-05-28 14:26:261,374
0
1,374Form 4
35SMITH LOWNDES ANDREW
Director
2019-12-11 16:31:491,102
0
1,102Form 4
36Dillon Margaret
Director
2025-05-23 19:10:03945
0
945Form 4
37SHANK SUZANNE F.
Director
2025-05-27 09:59:16871
0
871Form 4
38Carlson Peter M
Director
2025-05-23 19:09:16717
0
717Form 4
39LUSARDI ROBERT R
EVP - White Mountains Capital
2009-03-26 16:14:18507
31
538Form 4
40Yi Steven
Director
2025-05-23 19:12:17525
0
525Form 4
41BERKOWITZ BRUCE R
former Director
Director
2010-04-28 14:40:42300
0
300Form 4
42DORCUS MARK KEVIN
Pres - WM Advisors
2005-08-10 16:06:360
38
38Form 3
43MILLER T MICHAEL
Pres & CEO - OneBeacon
2005-07-08 16:04:230
0
0Form 3
44HUTTON TOM
President, White Mountains Re
2006-02-10 16:46:490
0
0Form 3