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WTM

White Mountains Insurance Group, Ltd.

NYSE · Financial Services · Insurance - Property & Casualty · BM

$2,095.70
−0.78%
Ask drillr
0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
+1.1%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Aug 27, 2026Klar Stephen · directorA-Award113$0.00
May 22, 2026Carlson Peter M · directorA-Award135$0.00
May 22, 2026SHANK SUZANNE F. · directorA-Award135$0.00
May 22, 2026Dillon Margaret · directorA-Award135$0.00
May 22, 2026Hicks Weston M · directorA-Award190$0.00
May 22, 2026Chu John · directorA-Award135$0.00
May 22, 2026CAMPBELL REID TARLTON · directorA-Award135$0.00
May 22, 2026Gelston Philip A · directorA-Award135$0.00
May 22, 2026CHOKSI MARY C · directorA-Award135$0.00
May 22, 2026Tanner David Allen · directorA-Award135$0.00
Feb 27, 2026Hildreth Michaela · officer: MD & Chief Accounting OfficerA-Award600$0.00
Feb 27, 2026Papamichael Michael A · officer: Chief Financial OfficerA-Award500$0.00
Feb 27, 2026SEELIG ROBERT LAWRENCE · officer: EVP & General CounselA-Award775$0.00
Feb 27, 2026Caffrey Liam P · director, officer: Chief Executive OfficerA-Award1,500$0.00
Feb 27, 2026Harrison Giles E · officer: PresidentA-Award775$0.00
Jan 5, 2026Hildreth Michaela · officer: MD & Chief Accounting OfficerF-InKind274$2.1K
Jan 2, 2026Papamichael Michael A · officer: Chief Financial OfficerF-InKind131$2.1K
Jan 2, 2026Caffrey Liam P · officer: Chief Executive OfficerF-InKind425$2.1K
Jan 2, 2026SEELIG ROBERT LAWRENCE · officer: EVP & General CounselF-InKind398$2.1K
Dec 22, 2025Rountree George Manning · director, officer: Chief Executive OfficerSale5,000$2.0K
Dec 22, 2025CAMPBELL REID TARLTON · directorSale5,000$2.0K
Dec 16, 2025Gelston Philip A · directorSale165$2.0K
May 27, 2025SHANK SUZANNE F. · directorA-Award150$0.00
May 23, 2025Carlson Peter M · directorA-Award150$0.00
May 23, 2025CHOKSI MARY C · directorA-Award150$0.00
May 23, 2025Dillon Margaret · directorA-Award150$0.00
May 23, 2025Gelston Philip A · directorA-Award150$0.00
May 23, 2025Hicks Weston M · directorA-Award210$0.00
May 23, 2025Tanner David Allen · directorA-Award150$0.00
May 23, 2025Yi Steven · directorA-Award150$0.00
Institutional positioning

13F filings over the trailing two quarters

New 88Increased 216Reduced 260Sold out 43
FilerActionSharesFiled
DIMENSIONAL FUND ADVISORS LPIncreased158,954Aug 11, 2026
DIMENSIONAL FUND ADVISORS LPIncreased156,618May 7, 2026
NEUBERGER BERMAN GROUP LLCReduced124,715May 14, 2026
RIVER ROAD ASSET MANAGEMENT, LLCReduced120,519Apr 30, 2026
Neuberger Berman Group LLCReduced119,141Aug 13, 2026
BlackRock, Inc.Increased117,871Aug 7, 2026
River Road Asset Management, LLCReduced115,880Jul 17, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position115,553May 8, 2026
BLACKROCK, INC.Increased113,328May 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCReduced111,969Aug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position109,157May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCReduced107,479Aug 13, 2026
COOKE & BIELER LPReduced104,857May 4, 2026
FULLER & THALER ASSET MANAGEMENT, INC.Reduced104,561May 14, 2026
FULLER & THALER ASSET MANAGEMENT, INC.Reduced101,892Aug 12, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 27, 2026