Insider Transactions Reported by 16 Insiders of WHITE MOUNTAINS INSURANCE GROUP LTD

Symbol
WTM on NYSE
Location
Hanover, NH

Insiders trading volume in the past year

WHITE MOUNTAINS INSURANCE GROUP LTD executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
SEELIG ROBERT LAWRENCE EVP & General Counsel $38,315,787 01 Jan 2026
George Manning Rountree Chief Executive Officer, Director $28,538,006 -$10,250,000 -26% 19 Dec 2025
REID TARLTON CAMPBELL Director $21,625,911 -$10,250,000 -32% 19 Dec 2025
MORGAN W. DAVIS Director $11,647,272 28 Dec 2022
Michaela Hildreth MD & Chief Accounting Officer $5,216,747 01 Jan 2026
Weston M. Hicks Director $4,866,186 22 May 2025
David Allen Tanner Director $3,516,878 10 Nov 2025
Liam P. Caffrey Chief Executive Officer $3,454,191 01 Jan 2026
MARY C. CHOKSI Director $3,292,561 22 May 2025
Philip A. Gelston Director $3,212,063 -$338,004 -9.5% 16 Dec 2025
Margaret Dillon Director $1,674,634 22 May 2025
Michael A. Papamichael Chief Financial Officer $1,628,464 01 Jan 2026
SUZANNE F. SHANK Director $1,543,499 22 May 2025
Peter M. Carlson Director $1,270,595 22 May 2025
Steven Yi Director $930,352 22 May 2025
Giles E. Harrison EVP & Chief Strategy Officer $0 26 Feb 2025

Recent Insider Transactions by Companies or Individuals for WHITE MOUNTAINS INSURANCE GROUP LTD

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.