WTM SCHEDULE 13G: SEC filing
Filed with the SEC on · accession 0001465109-26-000122
WTM filed a SCHEDULE 13G (schedule 13g) with the SEC on Nov 13, 2026. Neuberger Berman Group LLC and its subsidiary Neuberger Berman Investment Advisers LLC filed a Schedule 13G disclosing beneficial ownership of approximately 5.2% and 5.1%, respectively, of White Mountains Insurance Group Ltd's common stock as of September 30, 2026. The stock moved +0.4% by the first close after the filing.
Summary of the filing
Neuberger Berman Group LLC and its subsidiary Neuberger Berman Investment Advisers LLC filed a Schedule 13G disclosing beneficial ownership of approximately 5.2% and 5.1%, respectively, of White Mountains Insurance Group Ltd's common stock as of September 30, 2026. The filing is a passive institutional ownership disclosure, not an activist position.
Key details
How WTM stock reacted
Close before
$2246.52
Nov 12, 2026
First close after
+0.38%
$2254.95
5 trading days
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Since filing
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Click hereFrequently asked questions
What did WTM file with the SEC on Nov 13, 2026?
WTM filed a SCHEDULE 13G (SEC filing). Neuberger Berman Group LLC and its subsidiary Neuberger Berman Investment Advisers LLC filed a Schedule 13G disclosing beneficial ownership of approximately 5.2% and 5.1%, respectively, of White Mountains Insurance Group Ltd's common stock as of September 30, 2026. The filing is a passive institutional ownership disclosure, not an activist position.
How do I read a SCHEDULE 13G?
A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G (schedule 13g): A report the company filed with the SEC (the US market regulator).
How did WTM stock react to this filing?
WTM closed at $2246.52 before the filing and $2254.95 on Nov 13, 2026 (+0.38%).
Other WTM SEC filings
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