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CNRNYSE
Core Natural Resources, Inc.
Silver Ores · DC · CIK 1710366
Core Natural Resources, Inc. produces and exports high-quality, low-cost metallurgical and thermal coals for global energy and infrastructure needs
$4.65B
Market cap
$79.12
Last close
-3.2%
1D
-3.7%
5D
1.0M
Volume
Price · last 39 sessions-10.3%
May 4L $79.12 · H $98.91Jun 29
187
Total filings
Jun 4, 2026
Last filing
12/31
Fiscal year end
8-KReg FD DisclosureJun 4, 20268-KMine SafetyMay 19, 202610-Q10-QMay 7, 20268-KResults of Operations · Reg FD DisclosureMay 7, 20268-KMine SafetyMay 4, 20268-KShareholder Vote · Reg FD DisclosureApr 30, 2026DEFA14ADEFA14AMar 16, 2026DEF 14ADEF 14AMar 16, 202610-K/A10-K/AFeb 27, 202610-K10-KFeb 17, 20268-KResults of Operations · Reg FD DisclosureFeb 12, 20268-KMine SafetyJan 12, 20268-KReg FD DisclosureDec 18, 202510-Q10-QNov 6, 20258-KResults of Operations · Reg FD DisclosureNov 6, 20258-KExecutive Change · Reg FD DisclosureOct 8, 202510-Q10-QAug 5, 20258-KResults of Operations · Reg FD DisclosureAug 5, 20258-KMaterial Agreement · Agreement TerminatedJul 31, 20258-KReg FD DisclosureJun 30, 202510-Q10-QMay 8, 20258-KResults of Operations · Reg FD DisclosureMay 8, 20258-KShareholder VoteApr 30, 20258-KReg FD Disclosure · Company UpdateMar 28, 20258-KReg FD DisclosureMar 24, 2025DEFA14ADEFA14AMar 17, 2025DEF 14ADEF 14AMar 17, 20258-KCompany UpdateFeb 20, 202510-K10-KFeb 20, 20258-KResults of Operations · Reg FD DisclosureFeb 20, 20258-K/ACompany UpdateFeb 18, 20258-KReg FD DisclosureJan 16, 20258-KExecutive Change · Material AgreementJan 15, 20258-KShareholder VoteJan 10, 2025425425Jan 3, 20258-KCompany UpdateJan 3, 20258-KExecutive ChangeDec 6, 20248-KExecutive ChangeNov 12, 2024425425Nov 6, 2024425425Nov 5, 2024425425Nov 5, 202410-Q10-QNov 5, 20248-KResults of Operations · Reg FD DisclosureNov 5, 2024425425Oct 15, 20248-KCompany UpdateOct 15, 2024S-4S-4Oct 1, 2024425425Sep 3, 2024425425Aug 26, 2024425425Aug 22, 2024425425Aug 21, 2024425425Aug 21, 2024425425Aug 21, 2024425425Aug 21, 2024425425Aug 21, 2024425425Aug 21, 2024425425Aug 21, 20248-KExecutive Change · Material AgreementAug 21, 202410-Q10-QAug 8, 20248-KResults of Operations · Reg FD DisclosureAug 8, 202410-Q10-QMay 7, 20248-KResults of Operations · Reg FD DisclosureMay 7, 20248-KBylaw Amendment · Shareholder VoteMay 6, 2024DEF 14ADEF 14AApr 1, 202410-K10-KFeb 9, 20248-KResults of Operations · Reg FD DisclosureFeb 6, 202410-Q10-QOct 31, 20238-KResults of Operations · Reg FD DisclosureOct 31, 202310-Q10-QAug 8, 20238-KResults of Operations · Reg FD DisclosureAug 8, 20238-KMaterial Agreement · New Debt / ObligationJun 13, 20238-KShareholder VoteMay 2, 202310-Q10-QMay 2, 20238-KResults of Operations · Reg FD DisclosureMay 2, 2023DEF 14ADEF 14AMar 30, 20238-KExecutive ChangeMar 24, 202310-K10-KFeb 10, 20238-KResults of Operations · Reg FD DisclosureFeb 7, 2023SC 13GSC 13GFeb 1, 20238-KExecutive Change · Results of OperationsJan 23, 20238-KCompany UpdateNov 2, 2022
Insider Activity
In the 90 days to Mar 19, 2026: 4 sold $6.7M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 19, 2026 | Klein Rosemary LSVP, CLO & Corp. Sec. | Sell | 10,000 | $105.00 | $1.1M |
| Mar 19, 2026 | Klein Rosemary LSVP, CLO & Corp. Sec. | Sell | 5,000 | $110.62 | $553K |
| Mar 18, 2026 | Brock James AExecutive Chair and CEO | Sell | 40,760 | $101.15 | $4.1M |
| Mar 17, 2026 | Rothka JohnChief Accounting Officer | Sell | 1,000 | $97.66 | $98K |
| Mar 10, 2026 | Navarre Richard ADirector | Sell | 6,000 | $91.70 | $550K |
| Mar 10, 2026 | Rothka JohnChief Accounting Officer | Sell | 3,800 | $91.62 | $348K |
| Oct 9, 2025 | Rothka JohnChief Accounting Officer | Sell | 1,000 | $100.00 | $100K |
| Oct 8, 2025 | Rothka JohnChief Accounting Officer | Sell | 1,000 | $95.00 | $95K |
| Oct 3, 2025 | Rothka JohnChief Accounting Officer | Sell | 2,500 | $90.00 | $225K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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