WHITE MOUNTAINS INSURANCE GROUP LTD — Investor Relations & Filings
White Mountains Insurance Group is a holding company that acquires and manages businesses and assets within the insurance and related financial services sectors. The company's strategy focuses on opportunistic, value-oriented acquisitions and patient, long-term investment. It utilizes a permanent capital base to provide enduring support and build partnerships with the owners and management teams of its portfolio companies. Through its subsidiaries, the company's operations include property and casualty insurance and reinsurance, municipal bond insurance, and providing capital solutions for asset and wealth management firms.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K - WHITE MOUNTAINS INSURANCE GROUP LTD (0000776867) (Filer) | 2026-04-01 | English | |
| DEF 14A - WHITE MOUNTAINS INSURANCE GROUP LTD (0000776867) (Filer) | 2026-04-01 | English | |
| SCHEDULE 13G/A - WHITE MOUNTAINS INSURANCE GROUP LTD (0000776867) (Subject) | 2026-03-27 | English | |
| 4 - WHITE MOUNTAINS INSURANCE GROUP LTD (0000776867) (Issuer) | 2026-03-20 | English | |
| 4 - WHITE MOUNTAINS INSURANCE GROUP LTD (0000776867) (Filer) | 2026-02-27 | English | |
| 4 - WHITE MOUNTAINS INSURANCE GROUP LTD (0000776867) (Filer) | 2026-02-27 | English |
Market data
Market data not available
Price history
Peer group · Non-life insurance
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WHITE MOUNTAINS INSURANCE GROUP LTD via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/31060/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31060 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=31060 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=31060 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 31060}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for WHITE MOUNTAINS INSURANCE GROUP LTD (id: 31060)"
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