Core Natural Resources, Inc. 8-K

What Happened

• On June 4, 2026, Core Natural Resources, Inc. announced (via Form 8‑K, Item 7.01) that it posted an investor presentation to its website. The presentation is furnished as Exhibit 99.1 to the filing and is incorporated by reference. The filing was signed by Miteshkumar B. Thakkar, President and Chief Financial Officer.

Key Details

• Filing date: June 4, 2026 (Form 8‑K).
• Disclosure type: Regulation FD investor presentation (Item 7.01).
• Exhibit: 99.1 — Investor Presentation dated June 4, 2026.
• Officer signing the filing: Miteshkumar B. Thakkar, President & CFO.

Why It Matters

• This is a public disclosure meant to make company information available to all investors at the same time (Regulation FD). The presentation may contain updated operating or strategic information investors want to review; investors should read Exhibit 99.1 on the company website or in the SEC filing for specifics.