secwatch.observer — SEC 8-K summary
======================================

Issuer:     WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)
CIK:        0000776867
Form:       8-K
Filed at:   2025-07-18T23:59:59+00:00
Accession:  0000776867-25-000012
Event type: other_material
Sentiment:  neutral
Materiality: 0.60
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

White Mountains closes $150M strategic investment in BroadStreet Partners
-------------------------------------------------------------------------

- White Mountains invested $150M in BroadStreet as part of a group led by Ethos Capital, BCI, and T. Rowe Price.
- Ontario Teachers' retains a significant co-control stake and continues partnership with the Ethos-led group.
- BroadStreet is a middle-market insurance brokerage offering commercial and personal P&C and employee benefits solutions.
- Investment aims to support BroadStreet's Core Agency Partners with M&A, capital solutions, and digital transformation tools.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/776867/000077686725000012/0000776867-25-000012-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/776867/000077686725000012/wtm-20250718.htm
  HTML page:      https://secwatch.observer/filing/0000776867-25-000012

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer