[SD] Core Natural Resources, Inc. Specialized Disclosure Report

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM SD

SPECIALIZED DISCLOSURE REPORT

Core Natural Resources, Inc.

(Exact name of the registrant as specified in its charter)

Delaware

001-38147

82-1954058

(State or other jurisdiction of incorporation or organization)

(Commission File Number)

(IRS Employer Identification No.)

275 Technology Drive, Suite 101

Canonsburg, Pennsylvania 15317

(Address of principal executive offices and zip code)

Miteshkumar B. Thakkar

Chief Financial Officer and President

(724) 416-8300

(Name and telephone number, including area code, of the person to contact in connection with this report.)

Check the appropriate box to indicate the rule pursuant to which this Form is being submitted, and provide the period to which the information in this Form applies:

☐ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, _____.

☒ Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended December 31, 2024.

Section 2 - Resource Extraction Issuer Disclosure

Item 2.01    Resource Extraction Issuer Disclosure and Report

Disclosure of Payments by Resource Extraction Issuers

The specified payment disclosure required by this Form is included as Exhibit 2.01 to this Specialized Disclosure Report on Form SD.

Section 3 - Exhibits

Item 3.01     Exhibits

Exhibit 2.01    Interactive Data File (Form SD for the year ended December 31, 2024 filed in XBRL)

Exhibit 99.1    Resource Extraction Payment Report as required by Item 2.01 of this Form

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			Core Natural Resources, Inc.
			(Registrant)
			By:			/s/ MITESHKUMAR B. THAKKAR
						Miteshkumar B. Thakkar
						Chief Financial Officer and President

Date: September 17, 2025