---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-237222"
form_type: "8-K"
ticker: "CNR"
cik: "0001710366"
company_name: "Core Natural Resources, Inc."
filed_at: "2024-10-15T23:59:59+00:00"
generated_at: "2026-05-30T14:38:20.556084+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# CONSOL Energy and Arch Resources HSR waiting period expires for pending merger

## Summary
- HSR waiting period expired October 11, 2024 at 11:59 p.m. ET.
- Expiration removes one condition to closing; other conditions remain including stockholder approvals.
- Merger is between CONSOL Energy (CEIX) and Arch Resources (ARCH).

## SEC filing metadata
- accession: 0001193125-24-237222
- form_type: 8-K
- ticker: CNR
- cik: 0001710366
- company_name: Core Natural Resources, Inc.
- filed_at: 2024-10-15T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1710366/000119312524237222/0001193125-24-237222-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1710366/000119312524237222/d870544d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-237222
- JSON: https://secwatch.observer/filing/0001193125-24-237222.json
- Plain text: https://secwatch.observer/filing/0001193125-24-237222.txt

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