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. (NYSE: CNR) files a range of documents with the U.S. Securities and Exchange Commission that describe its coal operations, financial performance, risks, and corporate actions. As a registrant with common stock listed on the New York Stock Exchange, the company submits annual reports on Form 10-K, quarterly reports on Form 10-Q, and current reports on Form 8-K, along with exhibits and investor presentations.
In its 8-K filings, Core Natural Resources has reported quarterly results, leadership changes, financing arrangements, operational updates, and mine safety events. Examples include 8-Ks announcing second and third quarter 2025 financial results, an 8-K describing the appointment of a new chief executive officer and the related separation arrangements for the prior CEO, and an 8-K detailing a refinancing of tax-exempt bonds originally issued by its predecessor companies. Another 8-K outlines a receivables financing agreement and related sale and contribution agreements involving trade receivables.
Filings also address mine operations and safety. One 8-K reports an imminent danger order issued under section 107(a) of the Federal Mine Safety and Health Act at the Mountaineer II mine in West Virginia due to elevated methane levels in an isolated section, noting that mine personnel took actions to restore acceptable levels and that the order was terminated without injuries or illnesses. Other 8-Ks furnish press releases on efforts to resume longwall operations at the Leer South mine and the eventual resumption of those operations.
On this SEC filings page, users can review Core Natural Resources’ Forms 10-K and 10-Q for detailed financial statements, segment information for metallurgical, high calorific value thermal, and Powder River Basin coal operations, and risk factor discussions. They can also access 8-Ks covering earnings releases, financing transactions, governance changes, and mine safety disclosures. AI-powered summaries can help explain lengthy filings, highlight key figures and segment trends, and point out items such as capital return framework details, debt structure changes, and significant operational events described in the underlying documents.
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.
John Rothka reported insider sales of Common Stock for CNR. The filing shows a sale of $348,150 for 3,800 shares on 03/10/2026. The filing also lists 1,000 Common Shares tied to Restricted Stock Units dated 02/23/2026 under equity compensation.
Core Natural Resources, Inc. is holding its 2026 virtual annual meeting on April 30, 2026, asking stockholders to elect eight directors, ratify Ernst & Young LLP as auditor for 2026, and approve 2025 executive pay on an advisory basis.
Formed in January 2025 through a merger of equals between CONSOL Energy and Arch Resources, Core operates a large portfolio of longwall and surface coal mines and strategic export terminals. In 2025 it generated cash flow from operations of $305.8 million and free cash flow of $246.1 million, and returned $245.1 million to stockholders via repurchasing 3.1 million shares and paying $20.8 million in dividends.
The company adopted a capital return framework targeting roughly 75% of free cash flow, a new pay-for-performance executive compensation program with a mix of RSUs and PSUs, and strengthened governance with 83% independent directors, four fully independent committees, stock ownership guidelines, and policies such as clawbacks, anti-hedging, and insider trading controls.
Core Natural Resources, Inc. Chief Accounting Officer John Rothka reported an open-market sale of 3,800 shares of common stock at a weighted average price of $91.62 per share. After the sale, he directly holds 6,190 shares, including 1,314 unvested restricted stock units that continue to represent future equity-based compensation.