---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-066237"
form_type: "8-K"
ticker: "CNR"
cik: "0001710366"
company_name: "Core Natural Resources, Inc."
filed_at: "2025-03-28T23:59:59+00:00"
generated_at: "2026-05-24T03:09:34.984028+00:00"
event_type: "debt"
sentiment: "positive"
materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Core Natural Resources completes $307M tax-exempt bond refinancing at 5.3% avg rate

## Summary
- Total bond amount $306.78M ($97.56M PA, $102.865M MD, $106.355M WV) with 10-year maturity, unsecured.
- Weighted avg interest rate reduced to 5.3% despite higher rate environment; rates between 5.0% and 5.45%.
- Proceeds used to refinance existing CONSOL and Arch bonds and fund solid waste disposal facilities at Bailey Prep, Leer South Mine, and Baltimore terminal.
- Transaction 6x oversubscribed with 39 institutional investors; Jefferies and KeyBanc co-lead bookrunners.
- Refinancing covers vast majority of Core's debt, enhancing financial flexibility and long-term growth prospects.

## SEC filing metadata
- accession: 0001193125-25-066237
- form_type: 8-K
- ticker: CNR
- cik: 0001710366
- company_name: Core Natural Resources, Inc.
- filed_at: 2025-03-28T23:59:59+00:00
- event_type: debt
- sentiment: positive
- materiality_score: 0.7
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1710366/000119312525066237/0001193125-25-066237-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1710366/000119312525066237/d937855d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-066237
- JSON: https://secwatch.observer/filing/0001193125-25-066237.json
- Plain text: https://secwatch.observer/filing/0001193125-25-066237.txt

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