• Core Natural Resources raised 2026 high-calorific-value thermal coal cash-cost guidance modestly to $40-$41 per ton.
• Metallurgical coal cash-cost guidance narrowed to $88-$90 per ton, reflecting expected continued strong performance at Leer and Leer South.
• Powder River Basin cash-cost guidance increased to $13.75-$14 per ton because of continued high projected diesel prices.
• The thermal segment is almost fully committed at prices expected to support attractive operating margins, with priced commitments averaging $59 per ton.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Core Natural Resources, Inc. published the original content used to generate this news brief on November 05, 2026, and is solely responsible for the information contained therein.