Core Natural Resources, Inc. SEC filings CNR
Core Natural Resources, Inc. has 667 filings in SEC EDGAR's recent list, going back to Jul 11, 2017. Its latest annual report, Form 10-K, was filed on Feb 17, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2026 | — |
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 5, 2026 | Nov 5, 2026 |
| SD | Specialized disclosure (conflict minerals) | Sep 23, 2026 | — |
| 3 | Initial insider ownership | Aug 20, 2026 | Aug 18, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 19, 2026 | Aug 18, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 4, 2026 | Jun 4, 2026 |
| 8-K | Current report | May 19, 2026 | May 13, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 12, 2026 | — |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 7, 2026 | May 7, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 6, 2026 | — |
| 8-K | Current report | May 4, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 30, 2026 |
| 4 | Insider transaction | May 1, 2026 | Apr 30, 2026 |
| 3 | Initial insider ownership | May 1, 2026 | Apr 30, 2026 |
| 3 | Initial insider ownership | May 1, 2026 | Apr 30, 2026 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Apr 30, 2026 | Apr 30, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 25, 2026 | Mar 24, 2026 |
| 4 | Insider transaction | Mar 20, 2026 | Mar 19, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 18, 2026 |
| 144 | Notice of proposed sale | Mar 19, 2026 | — |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 144 | Notice of proposed sale | Mar 18, 2026 | — |
| 144 | Notice of proposed sale | Mar 17, 2026 | — |
| DEFA14A | Additional proxy material | Mar 16, 2026 | — |
| DEF 14A | Proxy statement | Mar 16, 2026 | Apr 30, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 10, 2026 |
| 144 | Notice of proposed sale | Mar 10, 2026 | — |
| 144 | Notice of proposed sale | Mar 10, 2026 | — |
| 10-K/A | Amended annual report | Feb 27, 2026 | Dec 31, 2025 |
| 4/A | Filing | Feb 24, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 24, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 24, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 24, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 24, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4/A | Filing | Feb 23, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 10-K | Annual report | Feb 17, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 12, 2026 | Feb 12, 2026 |
| 8-K | Current report | Jan 12, 2026 | Jan 8, 2026 |
| 144 | Notice of proposed sale | Dec 18, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 18, 2025 | Dec 18, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 10, 2025 | — |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 6, 2025 | Nov 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 30, 2025 | — |
| 4 | Insider transaction | Oct 10, 2025 | Oct 8, 2025 |
| 144 | Notice of proposed sale | Oct 9, 2025 | — |
| 144 | Notice of proposed sale | Oct 8, 2025 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 8, 2025 | Oct 6, 2025 |
| 4 | Insider transaction | Oct 6, 2025 | Oct 3, 2025 |
| 144 | Notice of proposed sale | Oct 3, 2025 | — |
| 4 | Insider transaction | Sep 26, 2025 | Sep 25, 2025 |
| 144 | Notice of proposed sale | Sep 25, 2025 | — |
| 4 | Insider transaction | Sep 18, 2025 | Sep 17, 2025 |
| 144 | Notice of proposed sale | Sep 17, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | Sep 17, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2025 | — |
| 10-Q | Quarterly report | Aug 5, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 5, 2025 | Aug 5, 2025 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Jul 31, 2025 | Jul 28, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 15, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 30, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| 4 | Insider transaction | May 12, 2025 | May 9, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 12, 2025 | — |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 8, 2025 | May 8, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Apr 30, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Mar 31, 2025 |
| 144 | Notice of proposed sale | Mar 31, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Mar 28, 2025 | Mar 27, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 24, 2025 | Mar 24, 2025 |
| ARS | Annual report to shareholders | Mar 17, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Mar 17, 2025 | — |
| DEF 14A | Proxy statement | Mar 17, 2025 | Apr 29, 2025 |
| 144 | Notice of proposed sale | Feb 21, 2025 | — |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 8-K |
Current report
Other events
|
Feb 20, 2025 | Feb 20, 2025 |
| 10-K | Annual report | Feb 20, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 20, 2025 | Feb 20, 2025 |
| 8-K/A | Amended current report | Feb 18, 2025 | Jan 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 7, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 23, 2025 | — |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 14, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 16, 2025 | Jan 16, 2025 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Change to shareholder rights, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Jan 15, 2025 | Jan 13, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jan 10, 2025 | Jan 9, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 8, 2025 | — |
| 425 | Filing | Jan 3, 2025 | — |
| 8-K |
Current report
Other events
|
Jan 3, 2025 | Jan 3, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 6, 2024 | Dec 5, 2024 |
| EFFECT | Filing | Nov 26, 2024 | — |
| 424B3 | Prospectus | Nov 26, 2024 | — |
| CORRESP | Letter to the SEC | Nov 22, 2024 | — |
| S-4/A | Filing | Nov 18, 2024 | — |
| CORRESP | Letter to the SEC | Nov 18, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Nov 12, 2024 | Nov 6, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 7, 2024 | — |
| 425 | Filing | Nov 6, 2024 | — |
| 425 | Filing | Nov 5, 2024 | — |
| 425 | Filing | Nov 5, 2024 | — |
| 10-Q | Quarterly report | Nov 5, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 5, 2024 | Nov 5, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| CORRESP | Letter to the SEC | Nov 1, 2024 | — |
| UPLOAD | Letter from the SEC | Oct 25, 2024 | — |
| UPLOAD | Letter from the SEC | Oct 25, 2024 | — |
| 425 | Filing | Oct 15, 2024 | — |
| 8-K |
Current report
Other events
|
Oct 15, 2024 | Oct 14, 2024 |
| S-4 | Registration for a merger or exchange | Oct 1, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | Sep 25, 2024 | — |
| 425 | Filing | Sep 3, 2024 | — |
| 425 | Filing | Aug 26, 2024 | — |
| 425 | Filing | Aug 22, 2024 | — |
| 425 | Filing | Aug 21, 2024 | — |
| 425 | Filing | Aug 21, 2024 | — |
| 425 | Filing | Aug 21, 2024 | — |
| 425 | Filing | Aug 21, 2024 | — |
| 425 | Filing | Aug 21, 2024 | — |
| 425 | Filing | Aug 21, 2024 | — |
| 425 | Filing | Aug 21, 2024 | — |
| 8-K |
Current report
Material agreement, Officer or director change, Other events
|
Aug 21, 2024 | Aug 20, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 8, 2024 | Aug 8, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 144 | Notice of proposed sale | Jun 28, 2024 | — |
| 144 | Notice of proposed sale | Jun 27, 2024 | — |
| 4 | Insider transaction | May 24, 2024 | May 22, 2024 |
| 144 | Notice of proposed sale | May 23, 2024 | — |
| 144 | Notice of proposed sale | May 22, 2024 | — |
| 4 | Insider transaction | May 9, 2024 | May 7, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 7, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 7, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Silver Ores (SIC 1220)
- Listed as
- CNR (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DC
- Headquarters
- Canonsburg, PA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1710366
- Former names
- CONSOL Energy Inc. (until Jan 10, 2025); CONSOL Mining Corp (until Nov 22, 2017)
Other Silver Ores companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.