Welcome to our dedicated page for Core Natural SEC filings (Ticker: CNR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Core Natural Resources, Inc. filings document the company's coal operating results, mine-safety disclosures, governance votes and Regulation FD communications. Form 8-K reports include quarterly earnings releases, investor presentations, updates on longwall operations at Leer South and West Elk, and mine-safety events reported under the Federal Mine Safety and Health Act.
Proxy and annual meeting materials cover director elections, auditor ratification, executive compensation votes, common-stock voting matters and related governance disclosures. The filings also provide formal records of capital-structure information, operating and financial results, and material events affecting the company's metallurgical and thermal coal operations.
Core Natural Resources, Inc. furnished a new investor presentation outlining its first quarter 2026 performance and strategic outlook. The company reported Q1 2026 net income of $21.0 million, adjusted EBITDA of $179.9 million, and free cash flow of $55.5 million, on revenue of $1.1 billion. Operations were led by strong results at the Leer South and West Elk mines, with the metallurgical segment achieving higher sales margins and the high calorific value thermal segment maintaining solid margins despite elevated electricity costs.
Core highlighted its capital return program, noting $47.0 million returned to stockholders in Q1 2026 and a total of $292.1 million since February 2025, primarily via share repurchases. As of March 31, 2026, the company reported total liquidity of $935 million, cash and cash equivalents of $413 million, net debt of $37 million, and a remaining share repurchase authorization of $733.8 million. Management also emphasized long-term demand for metallurgical and high calorific value thermal coal, optionality in rare earth elements and critical minerals, and growth initiatives in its Innovations business.
Core Natural Resources, Inc. reported a mine safety incident involving its subsidiary, Wolf Run Mining LLC, at the Leer South mine in Barbour County, West Virginia. On May 13, 2026, the Mine Safety and Health Administration (MSHA) issued an imminent danger order under section 107(a) of the Federal Mine Safety and Health Act of 1977 after an inspector found elevated methane concentrations in an area of the mine.
MSHA terminated the order early on May 14, 2026. After further discussions with Leer South’s mine management, MSHA determined on May 18, 2026 that an imminent danger had never existed and formally vacated the order.
Core Natural Resources Inc reports an institutional ownership disclosure by State Street affiliates. As of 03/31/2026, the filing shows 3,977,324 shares beneficially owned, representing 7.8% of common stock. The report lists shared voting power 3,922,205 and shared dispositive power 3,977,324.
The filing names SSGA Funds Management, Inc. and State Street Corporation as reporting persons and provides registered addresses and subsidiary affiliates. The signatures by officers are dated 05/12/2026.
Core Natural Resources, Inc. reported a solid turnaround for the three months ended March 31, 2026, posting net income of $21.0 million compared with a loss of $69.3 million a year earlier. Revenue rose to $1.08 billion from $1.02 billion, driven by higher volumes across High CV Thermal, Metallurgical and PRB segments and stronger metallurgical pricing.
Diluted earnings per share improved to $0.41 from a loss of $1.38. Adjusted EBITDA increased to $208.5 million, reflecting lower general and administrative costs as one‑time Merger expenses rolled off and insurance recoveries related to prior disruptions. Operating cash flow strengthened to $119.4 million, funding $73.1 million of capital expenditures, $41.9 million of share repurchases and a quarterly dividend of $0.10 per share.
Core Natural Resources reported a profitable and cash‑generative first quarter of 2026, highlighting improved operations across its coal portfolio. The company earned net income of $21.0 million, or $0.41 per diluted share, on revenues of $1.1 billion, and generated adjusted EBITDA of $179.9 million.
Cash flow was strong, with net cash provided by operating activities of $119.4 million and free cash flow of $55.5 million. Core returned $47.0 million to stockholders in the quarter, including $41.9 million of share repurchases and dividends, and has returned $292.1 million since launching its capital return program in 2025.
Operationally, the metallurgical segment improved margins as cash cost of coal sold per ton fell to $92.35, while the high calorific value thermal and Powder River Basin segments maintained solid cash margins despite weather and volume headwinds. For 2026, Core issued guidance targeting total coal sales of 85.6 to 91.4 million tons and segment cash cost ranges that support continued margin generation.
FMR LLC filed an Amendment No. 3 to a Schedule 13G/A reporting beneficial ownership of 4,045,764.99 shares of Core Natural Resources Inc. The filing states this represents 8.0% of the class and that FMR LLC has sole dispositive power over 4,045,764.99 shares. The filing identifies the issuer's address and CUSIP 218937100, and notes a power of attorney and an attached Exhibit 99 agreement.
Core Natural Resources, Inc. reported a mine safety event involving its subsidiary Mingo Logan Coal LLC at the Mountaineer II mine in Logan County, West Virginia. On April 29, 2026, the mine received an imminent danger order under section 107(a) of the Federal Mine Safety and Health Act of 1977.
The order followed an inspector’s finding of elevated methane levels at an air intake entry while equipment was energized. Methane between the intake entry and the stopping line at certain crosscuts exceeded 5.0%, and levels in the center of the intake entry ranged from 1.0% to 2.2%. Mine personnel promptly acted to reduce methane and restore acceptable levels.
The Mine Safety and Health Administration terminated the 107(a) order the same day, and no injuries or illnesses resulted from this temporary condition.
Keating Ronald C reported acquisition or exercise transactions in this Form 4 filing.
Core Natural Resources, Inc. director Ronald C. Keating received a compensation grant of 1,390 restricted stock units under the company’s Omnibus Performance Incentive Plan. These units vest on the first anniversary of the grant date, and each unit represents a right to receive one share of common stock.
Doheny Edward L II reported acquisition or exercise transactions in this Form 4 filing.
Core Natural Resources, Inc. director Edward L. Doheny II received an equity grant of 1,390 shares of Common Stock in the form of restricted stock units. The units were granted at no cash cost per share and will vest on the first anniversary of the grant date.
All 1,390 units are unvested and each unit represents a contingent right to receive one share of Core Natural Resources common stock, so the director’s reported post-transaction holding consists entirely of these unvested restricted stock units.