---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-003782"
form_type: "8-K"
ticker: null
cik: "0001037676"
company_name: "ARCH RESOURCES, INC."
filed_at: "2025-01-15T23:59:59+00:00"
generated_at: "2026-05-28T00:47:07.261758+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 1.0
calibrated_materiality_score: 1.0
confidence: "high"
source: SEC EDGAR
---

# Arch Resources merger with CONSOL completed; Core Natural Resources begins trading Jan 15 under CNR

## Summary
- Arch stockholders received 1.326 Core shares per share; Core to trade NYSE under CNR starting Jan 15.
- Core upsized RCF to $600M from $355M, extended maturity to April 2029, and reduced interest rate by 75 bps.
- Estimated annual synergies of $110M-$140M from the merger of equals.
- Board of eight: four former CONSOL directors, four former Arch directors; Jimmy Brock exec chair, Paul Lang CEO.
- More than 99% stockholder approval at both companies' meetings.

## SEC filing metadata
- accession: 0001104659-25-003782
- form_type: 8-K
- cik: 0001037676
- company_name: ARCH RESOURCES, INC.
- filed_at: 2025-01-15T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 1.0
- calibrated_materiality_score: 1.0
- confidence: high
- sec_items: 1.01, 1.02, 2.01, 3.01, 3.03, 5.01, 5.02, 5.03, 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/tm252363d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-003782
- JSON: https://secwatch.observer/filing/0001104659-25-003782.json
- Plain text: https://secwatch.observer/filing/0001104659-25-003782.txt

## Key facts
- Executive change
  Rosemary L. Klein was appointed as Director at ARCH RESOURCES, INC..
  - Action: appointed
  - Role: Director
  source text: Messrs. Miteshkumar B. Thakkar and George J. Schuller Jr. and Ms. Rosemary L. Klein, who were members of the board of directors of Merger Sub immediately prior to the Effective Time, became members of Arch’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- Executive change
  Rosemary L. Klein was appointed as Vice President and Corporate Secretary at ARCH RESOURCES, INC..
  - Action: appointed
  - Role: Vice President and Corporate Secretary
  source text: each of the officers of Merger Sub immediately prior to the Effective Time became the officers of Arch, including the following individuals: Miteshkumar B. Thakkar President and Treasurer George J. Schuller Jr. Vice President Rosemary L. Klein Vice President and Corporate Secretary
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- Executive change
  Miteshkumar B. Thakkar was appointed as Director at ARCH RESOURCES, INC..
  - Action: appointed
  - Role: Director
  source text: Messrs. Miteshkumar B. Thakkar and George J. Schuller Jr. and Ms. Rosemary L. Klein, who were members of the board of directors of Merger Sub immediately prior to the Effective Time, became members of Arch’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- Executive change
  Miteshkumar B. Thakkar was appointed as President and Treasurer at ARCH RESOURCES, INC..
  - Action: appointed
  - Role: President and Treasurer
  source text: each of the officers of Merger Sub immediately prior to the Effective Time became the officers of Arch, including the following individuals: Miteshkumar B. Thakkar President and Treasurer George J. Schuller Jr. Vice President Rosemary L. Klein Vice President and Corporate Secretary
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- Executive change
  George J. Schuller Jr. was appointed as Director at ARCH RESOURCES, INC..
  - Action: appointed
  - Role: Director
  source text: Messrs. Miteshkumar B. Thakkar and George J. Schuller Jr. and Ms. Rosemary L. Klein, who were members of the board of directors of Merger Sub immediately prior to the Effective Time, became members of Arch’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- Executive change
  George J. Schuller Jr. was appointed as Vice President at ARCH RESOURCES, INC..
  - Action: appointed
  - Role: Vice President
  source text: each of the officers of Merger Sub immediately prior to the Effective Time became the officers of Arch, including the following individuals: Miteshkumar B. Thakkar President and Treasurer George J. Schuller Jr. Vice President Rosemary L. Klein Vice President and Corporate Secretary
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- Governance Changes
  ARCH RESOURCES, INC.: Amended and restated certificate of incorporation in connection with merger at Effective Time.
  - Change: charter amendment
  source text: At the Effective Time, Arch’s Restated Certificate of Incorporation was amended and restated in accordance with the Merger Agreement
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- Governance Changes
  ARCH RESOURCES, INC.: Bylaws of Merger Sub became bylaws of Arch, subject to exceptions in Merger Agreement.
  - Change: bylaw amendment
  source text: the bylaws of Merger Sub in effect immediately prior to the Effective Time became the bylaws of Arch (subject to certain exceptions as set forth in the Merger Agreement)
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm
- M&A Transactions
  ARCH RESOURCES, INC. underwent a change of control involving CONSOL Energy Inc. (closed 2025-01-14).
  - Action: change of control
  - Counterparty: CONSOL Energy Inc.
  - Closing: 2025-01-14
  source text: On January 14, 2025 (the "Closing Date"), Arch Resources, Inc., a Delaware corporation ("Arch" or the "Company"), completed its previously announced merger of equals transaction with CONSOL Energy Inc., a Delaware corporation ("CONSOL"), pursuant to the terms of that certain Agreement and Plan of Merger, dated as of August 20, 2024 (the "Merger Agreement"), by and among the Company, CONSOL and Mountain Range Merger Sub Inc., a Delaware corporation and wholly owned subsidiary of CONSOL ("Merger Sub"). Pursuant to the terms of the Merger Agreement, Merger Sub merged with and into Arch (the "Merger"), with Arch continuing as the surviving corporation and as a wholly owned subsidiary of CONSOL.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1037676/000110465925003782/0001104659-25-003782-index.htm

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