CNR Rule 144: 15,000 Shares Listed for Resale

CNR Rule 144 notice: 15,000 shares of Common Stock are listed for sale through Morgan Stanley Smith Barney LLC relating to restricted stock vesting under a registered plan on 02/25/2024.

Rhea-AI Filing Summary

CNR Rule 144 notice: 15,000 shares of Common Stock are listed for sale through Morgan Stanley Smith Barney LLC relating to restricted stock vesting under a registered plan on 02/25/2024. The sale is linked to shares issued for services rendered.

Insights

Securities Compliance Analyst

Routine Rule 144 notice for a vesting-related resale of 15,000 shares.

The filing lists a proposed resale of 15,000 common shares via Morgan Stanley Smith Barney LLC tied to restricted stock vesting under a registered plan dated 02/25/2024. This is an administrative disclosure required under resale rules.

Effect depends on whether resale conditions under Rule 144 are met; timing and proceeds treatment are not stated in the excerpt. Subsequent transfer or sale activity will appear in transfer records or separate trading filings if executed.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the CNR Form 144 filing report?

The filing reports a proposed resale of 15,000 common shares through Morgan Stanley Smith Barney LLC. It ties the shares to restricted stock vesting under a registered plan dated 02/25/2024.

Who is listed as the broker or selling agent in the CNR Form 144?

The filing lists Morgan Stanley Smith Barney LLC at 1 New York Plaza, 8th Floor, New York, NY 10004 as the broker associated with the proposed sale of 15,000 shares.

Why were the 15,000 CNR shares eligible for resale under Rule 144?

The shares are identified as resulting from restricted stock vesting under a registered plan, which is the disclosed basis for seeking resale under Rule 144 on 02/25/2024.

Does the Form 144 state when the shares were or will be sold?

The filing lists the vesting date 02/25/2024 but does not specify an execution date or sale proceeds. It notifies intent to sell under Rule 144 rather than confirming a completed trade.

Is there any information about proceeds or the beneficiary of proceeds in the CNR filing?

The excerpt links the shares to issuance for services rendered but does not state proceeds, beneficiaries, or cash‑flow treatment for the proposed resale.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/19/2026 - 04:06 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001310202
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CORE NATURAL RESOURCES, INC.
SEC File Number	001-38147
Address of Issuer	275 Technology Drive Suite 101 Canonsburg PENNSYLVANIA 15317
Phone	(724) 416-8300
Name of Person for Whose Account the Securities are To Be Sold	THE ROSEMARY L. KLEIN REV TRUST
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	15000	1603100.50	50750366	03/19/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/25/2024	Restricted stock vesting under a registered plan	Issuer			15000	02/25/2024	Services Rendered

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	03/19/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Rosemary L. Klein, Trustee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)