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. filed a Form 3 as the initial insider ownership report for director Edward L. Doheny II. The filing lists no reportable transactions or derivative positions, establishing a baseline from which any future changes in his ownership will be measured in later filings.
Core Natural Resources, Inc. reported results from its Annual Meeting of Stockholders held on April 30, 2026. Stockholders elected eight directors for one-year terms, including new board members Edward L. Doheny II and Ronald C. Keating. As of the March 6, 2026 record date, there were 50,750,366 shares of common stock entitled to vote.
Stockholders ratified Ernst & Young LLP as independent registered public accounting firm for the year ending December 31, 2026, and approved on an advisory basis the compensation paid to named executive officers for 2025. The company also furnished a press release introducing Doheny and Keating and outlining their extensive leadership and board experience.
Core Natural Resources Inc reported a Schedule 13G filing showing Vanguard Capital Management beneficially owns 2,571,695 shares of Common Stock. The filing states this equals 5.06% of the class and lists 382,981 shares as sole voting power.
The filing identifies Vanguard Capital Management and affiliated business divisions as the reporting persons and is signed by Ashley Grim on 04/29/2026.
Core Natural Resources Inc ownership disclosure: Vanguard Portfolio Management reported beneficial ownership of 2,986,027 shares of Common Stock, representing 5.88% of the class as of 03/31/2026. The filing shows sole dispositive power over 2,986,027 shares and sole voting power for 28,145 shares. Vanguard states these holdings include securities held for Vanguard funds and managed accounts; no single other person is reported with over 5%.
Core Natural Resources Inc ownership disclosure: The Vanguard Group filed Amendment No. 7 to its Schedule 13G/A reporting that it beneficially owns 0 shares of Common Stock, representing 0% of the class. The filing notes an internal realignment on January 12, 2026 under SEC Release No. 34-39538, after which certain Vanguard subsidiaries report holdings separately.
Core Natural Resources, Inc. director and Executive Chair/CEO Brock James A reported bona fide gifts of a total of 48,880 shares of common stock on 2026-03-24.
The filing shows 24,440 shares gifted from an indirect holding by the Lee Ann Brock Trust and 24,440 shares gifted from his direct holdings, both at a reported price of $0.00 per share, reflecting non-cash transfers.
After these transactions, he holds 291,415 shares directly, including 44,640 unvested restricted stock units, and also has indirect holdings of 100,000 shares through SLAT-1 and 117,398 shares through GRAT-1. Footnotes state the gifts were made under a long-term strategy for estate planning purposes.
Core Natural Resources, Inc. insider Rosemary L. Klein, SVP, CLO & Corporate Secretary, reported open-market sales of company common stock. On March 19, 2026, she sold 10,000 shares at $105.00 per share and an additional 5,000 shares at $110.62 per share, totaling 15,000 shares.
After these transactions, Klein directly holds 53,679 shares of common stock, of which 11,045 shares are unvested restricted stock units, indicating she retains a meaningful equity stake and ongoing equity-based compensation exposure to the company.
Core Natural Resources, Inc. executive chair and CEO Brock James A reported an indirect open‑market sale of 40,760 shares of common stock at a weighted average price of $101.15 per share through the SLAT-1 vehicle. The sale was made in connection with a long-term estate planning strategy.
Following this transaction, he continues to hold substantial indirect positions, including 100,000 shares via SLAT-1, 24,440 shares in the Lee Ann Brock Trust, and 117,398 shares via GRAT-1, as well as a direct holding of 266,975 shares, which includes 44,640 unvested restricted stock units.
CNR Rule 144 notice: 15,000 shares of Common Stock are listed for sale through Morgan Stanley Smith Barney LLC relating to restricted stock vesting under a registered plan on 02/25/2024. The sale is linked to shares issued for services rendered.
Core Natural Resources, Inc. Chief Accounting Officer John Rothka reported an open-market sale of 1,000 shares of common stock on March 17, 2026. The shares were sold at a weighted average price of $97.66 per share, in multiple trades between $97.65 and $97.75. After this transaction, he directly holds 5,190 shares, including 1,314 unvested restricted stock units, indicating he retains a meaningful equity stake in the company.