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.
State Street Corporation filed a Schedule 13G reporting beneficial ownership in Core Natural Resources Inc common stock. As of 09/30/2025, State Street reported 3,439,517 shares beneficially owned, representing 6.7% of the class.
The filing lists shared voting power over 3,375,289 shares and shared dispositive power over 3,439,517 shares, with no sole voting or dispositive power. State Street certified the holdings were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.
The reporting person is classified as a parent holding company (HC), with investment advisory affiliates including SSGA entities named in the ownership structure.
Core Natural Resources (CNR) reported third‑quarter results reflecting its merger with Arch Resources. Revenue was $1,002.5 million versus $553.4 million a year ago, while net income was $31.6 million compared to $95.6 million last year. Year‑to‑date, revenue reached $3,122.3 million, with a net loss of $74.2 million, versus net income of $255.6 million in 2024.
The company completed an all‑stock merger on January 14, 2025, issuing 24.3 million shares valued at $2,481.4 million, representing roughly 45% of shares outstanding post‑deal. Total assets rose to $6,195.9 million from $2,879.5 million at year‑end, driven by acquired mining assets and inventory. CNR ended the quarter with cash and cash equivalents of $444.7 million, and no borrowings on its $600 million revolver, with $521.3 million of unused capacity.
Shares outstanding were 51,239,470 as of October 31, 2025.
Core Natural Resources, Inc. furnished an update noting it issued a press release announcing its 2025 third‑quarter results and posted an investor presentation. Both materials are available as exhibits and on the company’s website.
The information is furnished, not filed, and is not subject to Section 18 liabilities. Exhibit 99.1 contains the press release, and Exhibit 99.2 contains the investor presentation.
The Vanguard Group filed an amended Schedule 13G reporting passive ownership of 5,630,287 shares of Core Natural Resources Inc common stock, representing 10.93% of the class as of 09/30/2025.
The filing shows 0 shares with sole voting power and 331,513 with shared voting power. Vanguard reports 5,241,387 shares with sole dispositive power and 388,900 with shared dispositive power. The firm states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control. Clients of The Vanguard Group have the right to receive dividends or sale proceeds, and no single other person’s interest exceeds 5%.
Core Natural Resources, Inc. (CNR) insider John Rothka, the company’s Chief Accounting Officer, reported two automatic sales under a Rule 10b5-1 plan. On 10/08/2025 he sold 1,000 shares at $95, and on 10/09/2025 he sold 1,000 shares at $100, reducing his direct holdings to 9,307 shares. The filing notes the trades were executed under a trading plan adopted on 03/24/2025. Of the remaining shares, 828 are unvested restricted stock units, which limits immediately tradable stock. The Form 4 was signed by an attorney-in-fact on 10/10/2025, and indicates routine, preauthorized sales rather than open-market discretionary trades.
Form 144 notice reports a proposed sale of 1,000 common shares on 10/09/2025 through Morgan Stanley Smith Barney LLC with an aggregate market value of $97,710. The shares were acquired as Restricted and Performance Stock Units on 12/12/2019 and the filer lists 51,471,519 shares outstanding for the issuer. The filing also discloses two recent 10b5-1 plan sales by John Rothka: 1,000 shares on 10/08/2025 for $95,000 and 2,500 shares on 10/03/2025 for $225,000.
The form includes the usual 10b5-1 representation that the seller does not possess undisclosed material adverse information and notes that the securities were originally issued by the issuer. The filing supplies broker details and acquisition/payment dates but does not name the specific beneficial owner on the header fields.
Core Natural Resources, Inc. (CNR) filed a Form 144 notice showing a proposed sale of 1,000 common shares, with an aggregate market value of $92,700, planned for 10/08/2025 on the NYSE. The shares were acquired on 12/12/2019 as Restricted Stock Units & Performance Stock Units from the issuer. The filing lists 51,471,519 shares outstanding, which provides context for the size of the planned sale relative to total shares.
The notice also discloses a sale of 2,500 common shares executed under a 10b5-1 plan on 10/03/2025 for gross proceeds of $225,000. The filer certifies they are not aware of undisclosed material adverse information and includes the standard representations required when relying on a 10b5-1 plan.
Core Natural Resources, Inc. appointed James A. Brock as Chief Executive Officer, effective October 6, 2025. He will also continue to serve as Chair of the Board. On the same date, former CEO and director Paul A. Lang separated from the company and resigned from the Board, moving into a consulting role through December 31, 2025.
Under an expected Separation and Release Agreement, and subject to a general release of claims, Mr. Lang will receive a lump sum cash payment of $7,950,553, plus 18 months of COBRA premiums and 36 months of life insurance premiums, in satisfaction of obligations under his prior letter agreement. His outstanding time-vesting RSUs will be settled under existing terms, and his performance-based RSUs will be settled in cash based on target performance at $88.45 per share, the closing stock price on October 6, 2025. He will also receive base salary during the consulting period and reimbursement of certain relocation costs, while remaining subject to confidentiality, non-compete, and non-solicitation covenants.
Insider sale under prearranged plan at Core Natural Resources (CNR)
Chief Accounting Officer John Rothka reported an automatic sale of 2,500 shares of Core Natural Resources common stock on 10/03/2025 at a price of $90 per share under a Rule 10b5-1 trading plan adopted on 03/24/2025. After the sale he beneficially owns 11,307 shares, of which 828 are unvested restricted stock units. The Form 4 was signed by an attorney-in-fact on 10/06/2025.
Core Natural Resources, Inc. filed a Form 144 notifying the proposed sale of 2,500 shares of common stock through Morgan Stanley Smith Barney LLC on or about 10/03/2025. The filing lists an aggregate market value of $214,500.00 and indicates 51,471,519 shares outstanding for the issuer. The shares were acquired on 12/12/2019 as Restricted and Performance Stock Units, and no sales by the holder in the past three months are reported. The filer attests they are not aware of undisclosed material adverse information and the sale is being notified under Rule 144.