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Core Natural Resources Reports Fourth Quarter 2025 Results

Resumes longwall mining at Leer South, enters 2026 operating at targeted production rates Completes transition to new seam at West Elk, enters 2026 operating at targeted production rates Generates net cash provided by operating activities of $107.3 million and free cash flow1 of $27.0 million Significantly increases contracted position in all segments, at prices projected to drive advantageous margins  Returns $26.8 million to stockholders, bringing the total returned to stockholders in 2025 to $245.1 million CANONSBURG, Pa., Feb. 12, 2026 /PRNewswire/ -- Today, Core Natural Resources, Inc. (NYSE: CNR) ("Core" or the "company") reported a net loss of $79.0 million, or ($1.54) per diluted share, in the fourth quarter of 2025.

Cornerstone Building Brands Announces Partnership Integrating SunSteel™ Solar Panels With Its Double-Lok™ Metal Roofing Panels

CARY, N.C.--(BUSINESS WIRE)--Cornerstone Building Brands partners with AUO Energy Business to deliver SunSteel solar integrated with Double-Lok metal roofing.

Cornerstone Building Brands Names Industry Veteran Vishal Singh as President of Its Windows & Doors Business

CARY, N.C.--(BUSINESS WIRE)--Cornerstone Building Brands names Vishal Singh President of its Windows & Doors business, reinforcing its commitment to customers and growth.

Core Natural Resources Announces Resumption of Longwall Mining at Leer South

CANONSBURG, Pa. , Dec. 18, 2025 /PRNewswire/ -- Today, Core Natural Resources, Inc. (NYSE: CNR) ("Core," the "company," "we" or "our") announced that it has resumed longwall operations at its Leer South metallurgical mine in Barbour County, West Virginia.