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 an amended Form 4 for Executive Chair and CEO Brock James A to correct earlier clerical errors. The update clarifies that 2,960 shares of common stock were withheld on February 18, 2026 to cover the executive's tax liability. The amendment also states that the corrected amount of securities directly beneficially owned is 266,975 shares, of which 44,640 shares are unvested restricted stock units. These changes revise prior rounding and reporting mistakes rather than recording a new discretionary stock transaction.
Core Natural Resources, Inc. director Patrick A. Kriegshauser reported an equity award in the form of restricted stock units. On February 17, 2026, he acquired 1,610 common-share-equivalent restricted stock units at a stated price of $0.00 per share as a grant or award.
The units were granted under the company’s Omnibus Performance Incentive Plan and vest on the first anniversary of the grant date, with each unit representing a contingent right to receive one share of common stock. After this award, Kriegshauser’s direct holdings total 24,958 shares and units, of which 1,610 are unvested restricted stock units.
Core Natural Resources, Inc. President & CFO Miteshkumar Thakkar reported equity compensation and related tax-withholding transactions in common stock. On February 17, he acquired 8,730 restricted stock units at $0.00 per share under the company’s Omnibus Performance Incentive Plan, vesting in three equal annual installments starting on the first anniversary of the grant date. Each unit represents a contingent right to receive one share of common stock. On February 18, he disposed of 806 and 1,223 shares of common stock at $88.96 per share through tax-withholding dispositions to cover liabilities from previously vested restricted stock units, rather than open-market sales. Following these transactions, he directly holds 61,657 shares of common stock, including 18,620 unvested restricted stock units.
Core Natural Resources, Inc. director Richard A. Navarre received an equity award of 2,200 restricted stock units under the company’s Omnibus Performance Incentive Plan. These units vest on the first anniversary of the grant date and each converts into one share of common stock at vesting.
After this award, Navarre holds 24,030 shares of common stock in total, including 2,200 unvested restricted stock units.
Core Natural Resources, Inc. senior vice president and chief legal officer Rosemary L. Klein reported equity compensation and related tax-withholding transactions. On February 17, 2026, she acquired 5,060 restricted stock units at $0.00 per unit, vesting in three equal annual installments. On February 18, 2026, she disposed of 497 and 746 shares of common stock at $88.96 per share to cover tax liabilities from vesting RSUs. After these transactions, she directly held 68,667 shares of common stock, including 11,033 unvested restricted stock units.
Core Natural Resources, Inc. director Perera Valli received an equity award in the form of 1,610 restricted stock units of common stock. The grant was made at a price of $0.00 per share as a compensation award, not an open-market purchase.
The restricted stock units were granted under the company’s Omnibus Performance Incentive Plan and vest on the first anniversary of the grant date. After this award, Valli beneficially owns 9,317 shares of common stock, of which 1,610 are unvested restricted stock units that will convert into shares upon vesting.
Core Natural Resources, Inc. reported insider equity activity for SVP and Chief Operating Officer George John Schuller Jr. He received a grant of 7,530 restricted stock units on February 17, 2026, vesting in equal annual installments over three years, with each unit representing one share of common stock.
On February 18, 2026, the company withheld 713 shares and 1,069 shares of common stock, each at $88.96 per share, to satisfy his tax liability from the vesting of previously granted restricted stock units. Following these transactions, he held 27,338 shares of common stock, of which 16,274 were unvested restricted stock units.
Core Natural Resources, Inc. senior vice president of Marketing & Sales, Robert J. Braithwaite Jr., reported equity compensation activity and related tax withholding. On February 17, he acquired 4,440 restricted stock units at $0.00 per share as a grant that vests in equal annual installments over three years, beginning on the first anniversary of the grant date. Each unit represents a contingent right to receive one share of common stock. On February 18, a total of 774 shares of common stock were disposed of at $88.96 per share to satisfy his tax liability from vesting of previously granted restricted stock units. Following these transactions, he directly owned 16,290 shares of common stock, including 8,169 unvested restricted stock units.
Core Natural Resources, Inc. senior vice president and chief administrative officer Kurt R. Salvatori received a grant of 4,820 restricted stock units under the company’s Omnibus Performance Incentive Plan. These units vest in equal annual installments over three years starting on the first anniversary of the grant, with each unit representing one share of common stock.
On the same dates, 459 shares and 689 shares of common stock were withheld as tax-withholding dispositions tied to the vesting of previously granted restricted stock units, rather than open-market sales. After these transactions, Salvatori holds 24,585 shares of common stock directly, including 10,441 unvested restricted stock units.
Core Natural Resources, Inc. Chief Accounting Officer John Rothka reported routine equity compensation activity involving the company’s common stock. On February 17, 2026, he acquired 760 restricted stock units as a grant that vests in three equal annual installments, with each unit representing the right to receive one share of common stock. On February 18, 2026, 97 shares were disposed of to cover tax withholding arising from the vesting of previously granted restricted stock units, rather than through an open-market sale. Following these transactions, he directly owned 9,970 shares of common stock, including 1,312 unvested restricted stock units.