secwatch.observer — SEC 8-K summary
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Issuer:     Core Natural Resources, Inc. (CNR)
CIK:        0001710366
Form:       8-K
Filed at:   2025-10-08T23:59:59+00:00
Accession:  0001193125-25-234041
Event type: leadership
Sentiment:  neutral
Materiality: 0.65
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Core Natural Resources appoints board chair Jimmy Brock as CEO; Paul Lang departs
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- James A. Brock appointed CEO effective October 6, 2025, succeeding Paul A. Lang.
- Paul A. Lang separated as CEO and resigned from board; will provide transition consulting through Dec 31, 2025.
- Lang to receive lump sum cash of $7,950,553 plus benefits and RSU settlements per separation agreement.
- Brock previously executive chair since Jan 2025; prior CEO of CONSOL Energy before merger with Arch Resources.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1710366/000119312525234041/0001193125-25-234041-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1710366/000119312525234041/d66172d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-234041

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer