SEC EDGAR published this disclosure on 2026-08-27. Read the original document for its full text and supporting detail.
Open the original document at SEC EDGAR ↗| Field | Recorded value |
|---|---|
| Entity | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Source | SEC EDGAR ↗ |
| News section | companies |
| Source identifier | — |
| Source-linked related entities | None recorded |
| Event ID | #1004828 |
{
"accession": "0001628280-26-059191",
"cik": "776867",
"company_name": "WHITE MOUNTAINS INSURANCE GROUP LTD",
"form": "8-K",
"source_path": "edgar/data/776867/0001628280-26-059191.txt"
}| Dimension | Status / value | Method or boundary |
|---|---|---|
| What happened | not_covered | The source record has no short title or summary. |
| When | source_backed · reported 2026-08-27 | Occurred 2026-08-27. Source-record timestamps; no timezone or event time is inferred. |
| Affected entities | resolved · WHITE MOUNTAINS INSURANCE GROUP LTD · 0 related | Canonical primary entity and stored related_entity_ids only. |
| Event classification | filing · filing.new | canonical event type plus source-provided category; no sentiment or impact is inferred |
| Entity linking | resolved | Canonical entity resolved during ingestion |
| Deduplication | applied | unique source event key at ingestion |
| Source trust | high · terms allowed | Source registry metadata |
| Sentiment | not_covered | No sentiment model output is published for this record. |
| Market reaction | not_covered | Requires licensed quote, candle and volume observations for the affected instrument. |
| Historical analogs | not_covered | Requires an audited event-cluster corpus and matching methodology. |
| Impact mechanism | not_covered | No causal market-impact model is published for this record. |
| Related risks | not_covered | Risk implications require an audited instrument/entity exposure model. |
| Instrument linkage | not_covered | No instrument relation is inferred from an entity event; licensed instrument mapping is required. |
Source: Open recorded SEC filing
Source: SEC EDGAR · as of 2026-08-27T00:00:00Z