---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-21-024809"
form_type: "8-K"
ticker: "CNR"
cik: "0001710366"
company_name: "Core Natural Resources, Inc."
filed_at: "2021-11-02T23:59:59+00:00"
generated_at: "2026-06-28T15:16:31.222114+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# CONSOL Energy posts Q3 net loss of $113.8M on derivative losses; adj. EBITDA $66.6M

## Summary
- GAAP net loss $113.8M includes $147.3M pre-tax unrealized mark-to-market loss on derivatives.
- Adjusted EBITDA $66.6M; free cash flow $34.8M; reduced total debt by $18.4M during quarter.
- Coal shipments 5.4M tons at avg revenue $47.46/ton; avg cash cost $30.64/ton (up from $28.64).
- Updated 2021 guidance: coal sales 23.5-24.5M tons, cash cost $27.50-$28.50/ton, capex $150-170M.
- Resumed development of 5th longwall at Enlow Fork; expects operation in late 4Q22.

## SEC filing metadata
- accession: 0001437749-21-024809
- form_type: 8-K
- ticker: CNR
- cik: 0001710366
- company_name: Core Natural Resources, Inc.
- filed_at: 2021-11-02T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1710366/000143774921024809/0001437749-21-024809-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1710366/000143774921024809/ceix20210902_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-21-024809
- JSON: https://secwatch.observer/filing/0001437749-21-024809.json
- Plain text: https://secwatch.observer/filing/0001437749-21-024809.txt

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