WHITE MOUNTAINS INSURANCE GROUP LTD - WTM
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| May 07, 2026 | SCHEDULE 13G/A | Neuberger Berman Group LLC | 4.9% | 121,583 | View |
| May 07, 2026 | SCHEDULE 13G/A | Neuberger Berman Investment Advisers LLC | 4.8% | 117,789 | View |
| May 01, 2026 | SCHEDULE 13D/A | — | 33.03% | — | View |
| Apr 30, 2026 | SCHEDULE 13G | Vanguard Capital Management | 5.18% | 127,993 | View |
| Mar 27, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
| Feb 05, 2026 | SCHEDULE 13G | Neuberger Berman Group LLC | 5.1% | 129,654 | View |
| Feb 05, 2026 | SCHEDULE 13G | Neuberger Berman Investment Advisers LLC | 4.9% | 125,524 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.