WHITE MOUNTAINS INSURANCE GROUP LTD
For the period ended Dec 31, 2025. Filed Feb 27, 2026.
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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.
FY2025 · Filed Feb 27, 2026
WTM$2,256.20+0.7%Stored close · as of Nov 9, 2026
Extracted filing text, with the paragraph anchors used by the comparison.
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IV. Reinsurance
SCHEDULE IV
REINSURANCE
| Column A | Column B | Column C | Column D | Column E | Column F |
|---|---|---|---|---|---|
| $ in MillionsPremiums Earned | Gross Amount | Ceded to OtherCompanies | Assumed fromOther Companies | Net Amount | Percentage ofAmount Assumedto Net |
| Year ended: | |||||
| Ark/WM Outrigger | $1,130.9 | $(632.4) | $1,198.9 | $1,697.4 | 70.6% |
| HG Global | — | — | 30.8 | 30.8 | 100.0 |
| Bamboo Captive (1) | — | (2.0) | 28.7 | 26.7 | 107.5 |
| Bamboo CRVs | — | — | 22.2 | 22.2 | 100.0 |
| Ark/WM Outrigger | 1,004.2 | (504.6) | 1,088.2 | 1,587.8 | 68.5 |
| HG Global | 15.8 | — | 15.9 | 31.7 | 50.2 |
| Bamboo Captive | — | (4.0) | 43.4 | 39.4 | 110.2 |
| Bamboo CRV | — | — | 32.7 | 32.7 | 100.0 |
| Ark/WM Outrigger | 848.1 | (364.0) | 925.6 | 1,409.7 | 65.7 |
| HG Global | 28.7 | — | 2.5 | 31.2 | 8.0 |
FS - 6
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