WHITE MOUNTAINS INSURANCE GROUP, LTD.
Summary
WHITE MOUNTAINS INSURANCE GROUP, LTD. is registered in Bermuda and entered in the “Companies Register” under number 27225. Its legal form is Exempted Companies Limited by Shares. WHITE MOUNTAINS INSURANCE GROUP, LTD. is the ultimate parent of a group of 7 subsidiaries in 3 countries, as reported to GLEIF. GLEIF gives this reason: the entity is controlled by legal entities that are not subject to accounting consolidation. It has 4 direct subsidiaries in GLEIF data; 3 of them have a lapsed LEI. The LEI was first issued on 14 May 2016 and the record was last updated on 23 Jul 2026; the next renewal is due by 29 Jul 2027. GLEIF's ISIN mapping lists 24 ISINs for this LEI.
Written from GLEIF data using fixed, reviewed sentence templates.
Data-quality notes (AssetCensus analysis)
No data-quality notes for this entity in this data release.
Company details
| Legal form | Exempted Companies Limited by Shares |
|---|---|
| Register | Companies Register · Register website |
| Registration number | 27225 |
| Registration authority | Registrar of Companies (Ministry of Economic Development) |
| Jurisdiction | Bermuda |
| Registered address | A.S. Cooper Building, 26 Reid Street, HM 11 Hamilton, Bermuda |
| Headquarters address | 23 South Main Street, 03755 Hanover, United States |
| Category | company or other legal entity |
| Status | active |
| Founded (per GLEIF) | 25 Oct 1999 |
| LEI | 549300N3FL068JERBG02 |
| LEI status | active |
| LEI first issued | 14 May 2016 |
| LEI record last updated | 23 Jul 2026 |
| Next LEI renewal | 29 Jul 2027 |
| Corroboration of the LEI record | fully corroborated |
Group membership
Parent not reported to GLEIF
- Direct parent: the entity is controlled by legal entities that are not subject to accounting consolidation.
- Ultimate parent: the entity is controlled by legal entities that are not subject to accounting consolidation.
Direct subsidiaries (4)
- ARK INSURANCE HOLDINGS LIMITED Bermuda · HAMILTON
- HG Global Ltd. Bermuda lapsed · Hamilton
- WHITE MOUNTAINS INVESTMENTS (BERMUDA) LTD. Bermuda lapsed · Hamilton
- WHITE MOUNTAINS CAPITAL LLC United States lapsed · WILMINGTON
ISINs mapped to this LEI (24)
BMG9618E1075 · BMG9618E1158 · US36076TAA79 · US36076TAB52 · US36076TAC36 · US36076TAD19 · US36076TAE91 · US36076TAF66 · US36076TAG40 · US36076TAH23
24 in the GLEIF–ANNA mapping file; first 10 shown. The file covers ISINs issued since the mapping started, not all securities.