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 Name Report
Date Time		 Shares Owned
Directly
Indirectly		 Total
Shares Owned		 Filing
1 BYRNE JOHN JOSEPH
10% Owner		 2013-02-06 16:03:33 207,396
429,721		 637,117 Form 3
2 BYRNE MARK JAMES
Director		 2004-02-10 08:21:16 0
222,156		 222,156 Form 5
3 KEMP KARL THOMAS
Director		 2004-03-26 08:33:52 71,390
23,629		 95,019 Form 4
4 BERKSHIRE HATHAWAY INC
BUFFETT WARREN E
GENERAL RE CORP
GENERAL REINSURANCE CORP
10% Owner		 2008-11-03 15:02:16 89,279
0		 89,279 Form 13G
5 BARRETTE RAYMOND JOSEPH RENE
Chief Executive Officer		 2017-03-03 16:07:49 45,988
12,866		 58,854 Form 4
6 GILLESPIE JOHN DAVIES
Director		 2015-02-11 14:55:19 3,025
50,014		 53,039 Form 5
7 FASS STEVE ELLIOTT
Director		 2007-02-27 16:22:37 33,104
4,043		 37,147 Form 4
8 FOY DAVID THOMAS
Chief Financial Officer		 2017-05-26 16:33:17 30,537
76		 30,613 Form 4
9 Rountree George Manning
Chief Executive Officer		 2025-02-28 09:33:17 24,234
120		 24,354 Form 4
10 WATERS ALLAN LEWIS
CEO - Sirius Int'l Ins. Group		 2015-02-27 15:24:57 13,854
8,120		 21,974 Form 4
11 SEELIG ROBERT LAWRENCE
EVP & General Counsel		 2025-02-28 09:23:40 20,030
584		 20,614 Form 4
12 CAMPBELL REID TARLTON
Director		 2025-05-23 19:08:57 15,490
119		 15,609 Form 4
13 ZANKEL ARTHUR
Director		 2004-02-10 08:33:10 8,600
0		 8,600 Form 5
14 COCHRAN ROBERT PHILLIPS
Director		 2011-05-31 17:34:36 8,045
0		 8,045 Form 4
15 DAVIS MORGAN W
Director		 2022-12-29 09:26:52 6,709
1,030		 7,739 Form 4
16 Linker David
Chief Investment Officer		 2017-03-03 16:24:29 6,153
15		 6,168 Form 4
17 Caffrey Liam P
EVP& Chief Financial Officer		 2025-02-28 09:32:32 4,230
6		 4,236 Form 4
18 Brouillette Yves
Director		 2019-05-28 17:21:53 4,121
0		 4,121 Form 4
19 Hildreth Michaela
MD & Chief Accounting Officer		 2025-02-28 09:23:02 4,050
18		 4,068 Form 4
20 Oberting Kernan V
Managing Director
Director		 2016-01-05 14:24:21 3,899
23		 3,922 Form 4
21 Bazos Frank R
EVP and Head of M&A		 2020-03-02 16:16:49 3,600
0		 3,600 Form 4
22 PALMER JESS BRIAN
Chief Accounting Officer		 2021-01-04 16:00:29 2,653
411		 3,064 Form 4
23 HOLIDAY EDITH E
Director		 2020-05-22 16:05:51 2,827
0		 2,827 Form 4
24 Hicks Weston M
Director		 2025-05-23 19:10:50 2,746
0		 2,746 Form 4
25 Frinquelli Angelo Michael
Director		 2017-11-22 10:07:55 1,641
1000		 2,641 Form 4
26 Tolman Gary Charles
Director		 2018-05-25 12:44:04 1,822
798		 2,620 Form 4
27 CHOKEL CHARLES BERGEN
CFO - White Mountains Re Group		 2008-06-27 13:08:23 1,873
451		 2,324 Form 4
28 Tanner David Allen
Director		 2025-05-23 19:11:56 2,108
0		 2,108 Form 4
29 Harrison Giles E
EVP & Chief Strategy Officer		 2025-02-28 09:31:37 1,900
0		 1,900 Form 4
30 CHOKSI MARY C
Director		 2025-05-23 19:09:43 1,858
0		 1,858 Form 4
31 Gelston Philip A
Director		 2025-05-23 19:10:23 1,733
0		 1,733 Form 4
32 CAVOORES JOHN PAUL
Pres & CEO, OneBeacon		 2004-04-30 08:48:33 1,450
15		 1,465 Form 4
33 GILLESPIE GEORGE JOSEPH III
Director		 2010-07-16 14:27:17 1,400
0		 1,400 Form 4
34 CLARK HOWARD LONGSTRETH JR
Director		 2013-05-28 14:26:26 1,374
0		 1,374 Form 4
35 SMITH LOWNDES ANDREW
Director		 2019-12-11 16:31:49 1,102
0		 1,102 Form 4
36 Dillon Margaret
Director		 2025-05-23 19:10:03 945
0		 945 Form 4
37 SHANK SUZANNE F.
Director		 2025-05-27 09:59:16 871
0		 871 Form 4
38 Carlson Peter M
Director		 2025-05-23 19:09:16 717
0		 717 Form 4
39 LUSARDI ROBERT R
EVP - White Mountains Capital		 2009-03-26 16:14:18 507
31		 538 Form 4
40 Yi Steven
Director		 2025-05-23 19:12:17 525
0		 525 Form 4
41 BERKOWITZ BRUCE R
former Director
Director		 2010-04-28 14:40:42 300
0		 300 Form 4
42 DORCUS MARK KEVIN
Pres - WM Advisors		 2005-08-10 16:06:36 0
38		 38 Form 3
43 MILLER T MICHAEL
Pres & CEO - OneBeacon		 2005-07-08 16:04:23 0
0		 0 Form 3
44 HUTTON TOM
President, White Mountains Re		 2006-02-10 16:46:49 0
0		 0 Form 3