Screener
White Mountains Insurance Group WTM Marine & Energy — Prior Year
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Where this comes from
Reported directly by White Mountains Insurance Group in its filing.
Tagged under the XBRL concept us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense.
The source filing: White Mountains Insurance Group’s 10-K, filed February 27, 2026.
- Filed
- Feb 27, 2026, 9:21 AM EST
- Fiscal year
- FY2025
- Accession
- 0001628280-26-012603
| Millions | Year Ended December 31, 2025 | Year Ended December 31, 2024 | Year Ended December 31, 2023 |
|---|---|---|---|
| Net loss and LAE reserves | 1,693.1 | 1,264.3 | 791.5 |
| Loss and LAE incurred relating to: | |||
| Current year losses | 956.9 | 914.4 | 706.9 |
| Prior year losses | (112.7) | (58.6) | 19.9 |
| Net incurred loss and LAE | 844.2 | 855.8 | 726.8 |
| Loss and LAE paid relating to: | |||
| Current year losses | (205.6) | (109.2) | (51.3) |
| Prior year losses | (380.1) | (307.5) | (356.6) |
Item 16. Form 10-K Summary.
FAQ
- What is White Mountains Insurance Group's marine & energy — prior year?
- White Mountains Insurance Group (WTM) reported marine & energy — prior year of $1.18M in Q4 2025.
- What does marine & energy — prior year mean?
- This metric represents the prior year development of loss and loss adjustment expense reserves for the Marine and Energy insurance segment. It reflects the change in estimated liabilities for claims occurring in previous periods, serving as a key indicator of reserve adequacy and underwriting accuracy.
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