---
schema_version: "secwatch.filing_event.v1"
accession: "0000776867-25-000011"
form_type: "8-K"
ticker: "WTM"
cik: "0000776867"
company_name: "WHITE MOUNTAINS INSURANCE GROUP LTD"
filed_at: "2025-07-16T23:59:59+00:00"
generated_at: "2026-05-18T06:22:21.927575+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# White Mountains enters $250M senior unsecured revolver, undrawn at close

## Summary
- Established $250M senior unsecured revolving credit facility, fully undrawn as of July 16, 2025.
- Facility matures July 16, 2028; interest on SOFR loans at 1.10%-1.50% plus SOFR (with 0.10% credit spread adjustment).
- Financial covenants require minimum Consolidated Net Worth and Debt to Cap Ratio not exceeding 32.5%.
- Joint lead arrangers: BofA Securities and Barclays Bank PLC; Bank of America acts as administrative agent.
- Company states no current plans to draw on the facility; fees range from 0.15% to 0.25% per annum.

## SEC filing metadata
- accession: 0000776867-25-000011
- form_type: 8-K
- ticker: WTM
- cik: 0000776867
- company_name: WHITE MOUNTAINS INSURANCE GROUP LTD
- filed_at: 2025-07-16T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/776867/000077686725000011/0000776867-25-000011-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/776867/000077686725000011/wtm-20250716.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000776867-25-000011
- JSON: https://secwatch.observer/filing/0000776867-25-000011.json
- Plain text: https://secwatch.observer/filing/0000776867-25-000011.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.