---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-173024"
form_type: "8-K"
ticker: "CNR"
cik: "0001710366"
company_name: "Core Natural Resources, Inc."
filed_at: "2025-08-05T23:59:59+00:00"
generated_at: "2026-05-17T20:49:43.505101+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Core Natural Resources Q2 net loss $36.6M, adj. EBITDA $144.3M, synergies target raised to $150-170M

## Summary
- Net loss of $36.6M ($0.70 diluted EPS); revenues $1,102.4M; adj. EBITDA $144.3M incl. $21.2M Leer South costs.
- Increased annual synergy target to $150M-$170M, ~30% above initial guidance; returned $87.1M to shareholders via buybacks and dividends.
- Leer South longwall production resumption delayed to after Oct 2025; expects Q3 fire/idle costs $20-30M, insurance recoveries >$100M.
- High CV thermal segment committed 30M tons for 2025 at $60-62/ton realized; PRB fully committed at $14.40/ton.
- OBBBA designates met coal as critical material; 2.5% tax credit on production costs from 2026; lower royalty on federal lands.

## SEC filing metadata
- accession: 0001193125-25-173024
- form_type: 8-K
- ticker: CNR
- cik: 0001710366
- company_name: Core Natural Resources, Inc.
- filed_at: 2025-08-05T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1710366/000119312525173024/0001193125-25-173024-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1710366/000119312525173024/d96449d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-173024
- JSON: https://secwatch.observer/filing/0001193125-25-173024.json
- Plain text: https://secwatch.observer/filing/0001193125-25-173024.txt

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