Companies / White Mountains Insurance Group Ltd

White Mountains Insurance Group Ltd

NYSE: WTMCIK 776867HANOVER, NHwhitemountains.com ↗

Financials · FY2025

Revenue$3.73B
Net income$1.20B
Total debt$932.50M
Cash$136.40M
Diluted EPS$430.14
Shares outstanding2.4M

Ownership

2.4M shares outstanding · as of Aug 3, 2026
1.9%Insiders
Ownership
Insiders1.91%45,577
Institutions93.38%2,228,684
Public float4.71%112,460

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 10

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Insider% of sharesShares
Seelig Robert LawrenceEVP & General Counsel
0.75%17,857
Campbell Reid TarltonDirector
0.44%10,575
Caffrey Liam PCEOChief Executive Officer · Director
0.15%3,650
Hicks Weston MDirector
0.12%2,936
Harrison Giles EPresident
0.11%2,675
Tanner David AllenDirector
0.08%2,014
Choksi Mary CDirector
0.08%1,993
Hildreth MichaelaMD & Chief Accounting Officer
0.08%1,825
Papamichael Michael AChief Financial Officer
0.05%1,200
Carlson Peter MDirector
0.04%852

Institutional holders 358

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HolderValue% of shares
Vanguard Group Inc$489.79M9.88%
Dimensional Fund Advisors LP$325.43M6.56%
Neuberger Berman Group LLC$269.42M5.43%
River Road Asset Management, LLC$264.78M5.05%
BlackRock, Inc.$244.39M4.94%
Fuller & Thaler Asset Management, Inc.$229.72M4.38%
Cooke & Bieler L.P.$221.47M4.47%
Fiduciary Management Inc /Wi$187.71M3.78%
Morgan Stanley$170.72M3.44%
Wallace Capital Management Inc.$166.96M3.37%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Jan 1, 2026Caffrey Liam P
CEO
OtherCommon Shares$883.2K-425
-20.43%
1,655
0.07% of shares
low
Jan 1, 2026Seelig Robert Lawrence
Executive
OtherCommon Shares$827.1K-398
-2.17%
17,907
0.75% of shares
low
Jan 1, 2026Hildreth Michaela
Executive
OtherCommon Shares$569.4K-274
-9.91%
2,491
0.10% of shares
low
Jan 1, 2026Papamichael Michael A
Executive
OtherCommon Shares$272.2K-131
-14.51%
772
0.03% of shares
low
May 21, 2026Carlson Peter M
Director
GrantCommon Shares$0+135
+18.83%
852
0.04% of shares
low
May 21, 2026Campbell Reid Tarlton
Director
GrantCommon Shares$0+135
+1.29%
10,575
0.44% of shares
low
May 21, 2026Tanner David Allen
Director
GrantCommon Shares$0+135
+7.18%
2,014
0.08% of shares
low
May 21, 2026Choksi Mary C
Director
GrantCommon Shares$0+135
+7.27%
1,993
0.08% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/A—0—
Neuberger Berman Group LLCPassive13G———
Morgan StanleyPassive13G/A———

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
WTM——G9618E107—