---
schema_version: "secwatch.filing_event.v1"
accession: "0001710366-26-000005"
form_type: "8-K"
ticker: "CNR"
cik: "0001710366"
company_name: "Core Natural Resources, Inc."
filed_at: "2026-02-12T23:59:59+00:00"
generated_at: "2026-05-16T03:04:32.777393+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Core Natural Resources Q4 net loss $79M, adj. EBITDA $103M; resumes full production at Leer South

## Summary
- Net loss $79M ($1.54 diluted EPS); adjusted EBITDA $103.1M inclusive of $36.4M fire/extinguishment and idle mine costs.
- Revenue $1.042B; coal sales: 7.8M tons high-CV thermal, 2.0M met coal, 12.6M PRB.
- Leer South longwall resumed late Q4; West Elk completed B-Seam transition – both targeting full rates in 2026.
- Signed >38M tons of 2026 delivery commitments; 23.5M tons high-CV thermal, 47.4M PRB, 6.7M coking coal.
- Returned $26.8M to shareholders in Q4 ($245.1M in 2025); $0.10 dividend payable March 16, 2026.

## SEC filing metadata
- accession: 0001710366-26-000005
- form_type: 8-K
- ticker: CNR
- cik: 0001710366
- company_name: Core Natural Resources, Inc.
- filed_at: 2026-02-12T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1710366/000171036626000005/0001710366-26-000005-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1710366/000171036626000005/cnr-20260212.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001710366-26-000005
- JSON: https://secwatch.observer/filing/0001710366-26-000005.json
- Plain text: https://secwatch.observer/filing/0001710366-26-000005.txt

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