---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-115451"
form_type: "8-K"
ticker: "CNR"
cik: "0001710366"
company_name: "Core Natural Resources, Inc."
filed_at: "2025-05-08T23:59:59+00:00"
generated_at: "2026-05-22T04:54:38.579655+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Core Natural Resources Q1 net loss $69.3M; adjusted EBITDA $123.5M; synergy target raised to $125-150M

## Summary
- Net loss $69.3M ($1.38/diluted share) includes $49.2M merger costs and $11.7M debt extinguishment loss.
- Adjusted EBITDA $123.5M on revenue $1,017.4M; returned $106.6M via share buybacks ($101.3M for 1.4M shares at $73.52 avg) and quarterly dividend $0.10/share.
- Synergy target increased 10% at midpoint to $125-150M annually; Leer South longwall restart on track for mid-2025.
- High CV thermal segment sold 7.1M tons, realized $63.18/ton revenue, cash cost $42.78/ton; met coal segment sold 2.3M tons at $98.26/ton realized revenue.
- Liquidity $858.3M including $388.5M cash; refinanced tax-exempt bonds to $306.8M at 5.3% weighted rate with extended 10-year term.

## SEC filing metadata
- accession: 0001193125-25-115451
- form_type: 8-K
- ticker: CNR
- cik: 0001710366
- company_name: Core Natural Resources, Inc.
- filed_at: 2025-05-08T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1710366/000119312525115451/0001193125-25-115451-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1710366/000119312525115451/d828774d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-115451
- JSON: https://secwatch.observer/filing/0001193125-25-115451.json
- Plain text: https://secwatch.observer/filing/0001193125-25-115451.txt

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