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.