Core Natural Resources, Inc. 8-K

What Happened Core Natural Resources, Inc. announced its 2026 first-quarter results in a press release and posted an investor presentation to its website. The company furnished a Form 8-K dated May 7, 2026 attaching the press release (Exhibit 99.1) and the investor presentation (Exhibit 99.2). The report was signed by Miteshkumar B. Thakkar, President and Chief Financial Officer.

Key Details

• Filing date: May 7, 2026 — Form 8-K reporting Q1 2026 quarterly results.
• Press release attached as Exhibit 99.1; investor presentation furnished as Exhibit 99.2.
• Materials posted on the company website: www.corenaturalresources.com (Investors section).
• The disclosures are furnished (not “filed”) under the Exchange Act, per the company’s statement in the 8-K.

Why It Matters The company has publicly released its Q1 2026 earnings information and supporting investor presentation — investors should review those documents for revenue, earnings, cash flow and any management commentary or guidance. Because the materials are furnished rather than filed, they are not subject to Section 18 liability and are not automatically incorporated by reference into other SEC filings. For specific financial figures and analysis, consult the press release and presentation on the company’s website or the SEC filings.