Place it in its market
Seven layers of its region's market — rates, credit, stress, liquidity, regime, breadth and sectors — with historical precedents. Public example: Apple and ASML.
See how Context works →On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Aug 27, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Aug 6, 2026Quarterly report · 10-QFiled by the company itself.Open the filing ↗
- Aug 6, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record1,4768 flagged findings
Reported transactions (Form 4)40since Feb 26, 2025 · and 8 other holdings
Corporate events (8-K)30since Aug 24, 2018
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
What the company does
White Mountains Insurance Group is a diversified insurance and related financial services holding company based in Hamilton, Bermuda. Redomiciled from Delaware, United States, on October 25, 1999, the company conducts most of its business through its insurance subsidiaries and other affiliates.
Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-05-06capital return (buybacks/dividends)recentOpen filing ↗“…ratings for one or more of White Mountains’s subsidiaries may be lowered in the future, which could result in higher borrowing…”
+1 more passage from the same document
- “…for one or more of White Mountains’s subsidiaries may be lowered in the future, which could result in higher borrowing costs and…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 1,476)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Aug 31, 26Form 4 ↗Insider transaction
- Aug 27, 268-K ↗Current report · A senior executive left or was appointed
- Aug 27, 26Form 4 ↗Insider transaction
- Aug 27, 26Form 3 ↗Insider transaction
- Aug 6, 2610-Q ↗Quarterly report
- Aug 6, 268-K ↗Current report · Results
- Jun 5, 268-K ↗Current report · Communication to the market
- May 22, 26Form 3 ↗Insider transaction
- May 21, 268-K ↗Current report · A senior executive left or was appointed
- May 15, 268-K ↗Current report · Took on a new financial obligation
- May 7, 26SCHEDULE 13G/A ↗Passive stake · Neuberger Berman Group LLC · 4.9% · event on Apr 30, 26 · amendment
- May 6, 2610-Q ↗Quarterly report
- May 6, 268-K ↗Current report · Results
- May 1, 26SCHEDULE 13D/A ↗Stake with intent to influence · amendment
- Apr 30, 26SCHEDULE 13G ↗Passive stake · Vanguard Capital Management · 5.2% · event on Mar 31, 26
- Apr 1, 268-K ↗Current report · Other events
1,476 filings on record, the oldest from Feb 9, 94.
Listing the 25 most recent filings of the 1,476 on record.
3656
- Aug 27, 26A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- May 21, 26A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- May 15, 26Took on a new financial obligation+2 more in the same filing8-K 2.03 ↗
- Dec 8, 25Completed an acquisition or disposal+2 more in the same filing8-K 2.01 ↗
- Oct 3, 25Entered a material agreement+1 more in the same filing8-K 1.01 ↗
- Sep 2, 25A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jul 7, 25Entered a material agreement+1 more in the same filing8-K 1.01 ↗
- Apr 10, 24A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 23, 24A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Oct 20, 23Entered a material agreement+1 more in the same filing8-K 1.01 ↗
- May 25, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 23, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
17 older filings not shown · The record reaches back to Aug 30, 04.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- Vanguard Capital Management5.2%Mar 31, 26SCHEDULE 13G ↗
- Neuberger Berman Group LLC4.9%Apr 30, 26SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
- Morgan Stanley3.0%Dec 31, 25SCHEDULE 13G/A ↗2 earlier filings
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
Stock compensation, tax and giftsshow the 37 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Aug 31, 26Giftamount n/aDavid Allen Tanner↗
- Aug 26, 26Compensationamount n/aStephen Klar↗
- May 21, 26Compensationamount n/aREID TARLTON CAMPBELL↗
- May 21, 26Compensationamount n/aPeter M Carlson↗
- May 21, 26Compensationamount n/aMARY C CHOKSI↗
- May 21, 26Compensationamount n/aJohn Chu↗
- May 21, 26Compensationamount n/aMargaret Dillon↗
- May 21, 26Compensationamount n/aPhilip A Gelston↗
- May 21, 26Compensationamount n/aWeston M Hicks↗
- May 21, 26Compensationamount n/aSUZANNE F. SHANK↗
- May 21, 26Compensationamount n/aDavid Allen Tanner↗
- Mar 19, 26Giftamount n/aROBERT LAWRENCE SEELIGEVP & General Counsel↗
- Mar 4, 26Giftamount n/aDavid Allen Tanner↗
- Feb 25, 26Compensationamount n/aROBERT LAWRENCE SEELIGEVP & General Counsel↗
- Feb 25, 26Compensationamount n/aMichael A PapamichaelChief Financial Officer↗
- Feb 25, 26Compensationamount n/aMichaela HildrethMD & Chief Accounting Officer↗
- Feb 25, 26Compensationamount n/aGiles E HarrisonPresident↗
- Feb 25, 26Compensationamount n/aLiam P CaffreyChief Executive Officer↗
- Jan 1, 26Tax$883KLiam P CaffreyChief Executive Officer↗
- Jan 1, 26Tax$827KROBERT LAWRENCE SEELIGEVP & General Counsel↗
- Jan 1, 26Tax$272KMichael A PapamichaelChief Financial Officer↗
- Jan 1, 26Tax$569KMichaela HildrethMD & Chief Accounting Officer↗
- Dec 23, 25Giftamount n/aMichaela HildrethMD & Chief Accounting Officer↗
- Nov 25, 25Giftamount n/aREID TARLTON CAMPBELL↗
- Nov 10, 25Giftamount n/aDavid Allen Tanner↗
- May 22, 25Compensationamount n/aREID TARLTON CAMPBELL↗
- May 22, 25Compensationamount n/aPeter M Carlson↗
- May 22, 25Compensationamount n/aMARY C CHOKSI↗
- May 22, 25Compensationamount n/aMargaret Dillon↗
- May 22, 25Compensationamount n/aPhilip A Gelston↗
- May 22, 25Compensationamount n/aWeston M Hicks↗
- May 22, 25Compensationamount n/aDavid Allen Tanner↗
- May 22, 25Compensationamount n/aSteven Yi↗
- May 22, 25Compensationamount n/aSUZANNE F. SHANK↗
- Feb 26, 25Compensationamount n/aMichaela HildrethMD & Chief Accounting Officer↗
- Feb 26, 25Compensationamount n/aROBERT LAWRENCE SEELIGEVP & General Counsel↗
- Feb 26, 25Compensationamount n/aGiles E HarrisonEVP & Chief Strategy Officer↗
The full record holds 90 transactions and goes back to Jan 1, 23.
Its sector and its market
White Mountains Insurance Group Ltd. among Financials companies
The profile shows what is on record. Context and Radar place the company among those of its sector and region.
Browse its neighbours
Other Financials companies
- Westamerica Bancorporation WABC
- Western Alliance Bancorporation WAL
- Western New England Bancorp Inc. WNEB
- Western Union Co. WU
- Westwood Holdings Group Inc. WHG
- WhiteHorse Finance, Inc. WHF
- Willis Towers Watson Public Limited Company WTW
- Winchester Bancorp Inc. WSBK
- Wintrust Financial Corporation WTFC
- WisdomTree, Inc. WT
With an account you also get
- The four engines — growth, trend, risk and context — each with its word and its score.
- The risk band and the sector phase.
- The company's fundamentals and accounts.
- Watchlist: your list of companies, with the «since you follow it» figure.
The research continues
The profile tells the story. The market sets the scene.
From White Mountains Insurance Group Ltd., the path continues in the other areas. Each one is shown with its own example, named in its step.
See what deserves a closer look
Every morning Radar screens the covered companies through a lens and explains why each candidate made the list. Public example: the lists from Aug 11, 2026.
See how Radar works →Keep the why
Follow White Mountains Insurance Group Ltd. in the Watchlist and review what changed since you added it: context, notices and filings. Written theses are coming soon. Public example: Apple.
See an example review →
Coverage
What sits behind this page.
Where each figure comes from and how far it reaches.
- Prices
- End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
- Series quality
- 250 clean closes in the period.
- SEC records
- 1,476 documents on file, from Feb 9, 1994 to Aug 31, 2026.
- Company description
- Wikipedia, read on Sep 3, 2026.
- This page
- Generated on Oct 19, 2026; refreshed through the day.
Start at your own pace
Explore first. Go deeper with access.
Every company's public profile is open. The full reading — context, Radar, watchlist — is inside, in an invitation-only beta.
Compare plans →- No account
This profile for every company we cover: closing prices with the record's facts on the curve, the SEC file in plain language, insider trades included, and links to its sector and exchange.
- Pro
What matters today, with its reason, is free with an account. Pro adds, in the profile, each company's notices and their explanation and the analysis of its insiders; in Radar, all the lenses, which notice each candidate carries, filters by notice type and «no dilution», and the cycle cohort filter; and in Watchlist, more companies and notice changes with their reason.
- Pro+
Adds the Lab: test a hypothesis on comparable cohorts before reusing it; and bring your lenses to Radar.
Are the prices real time?
No. It is one close per session, from the provider and with the date shown on the profile; it does not update during the trading day.
Which SEC documents appear here?
Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
Why does a European company show no SEC records?
It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.
Before forming a view on a company,
read what is on record.
One close per session. The record in plain language. Its sector and its market one link away. Your judgment when deciding.