CNR insider sale: 3,800 shares reported

John Rothka reported insider sales of Common Stock for CNR.

Rhea-AI Filing Summary

John Rothka reported insider sales of Common Stock for CNR. The filing shows a sale of $348,150 for 3,800 shares on 03/10/2026. The filing also lists 1,000 Common Shares tied to Restricted Stock Units dated 02/23/2026 under equity compensation.

Insights

Corporate Governance Analyst

Insider reported a routine restricted-share sale and lists RSUs.

The filing records a 3,800-share sale by John Rothka on 03/10/2026 for $348,150, a transaction size disclosed verbatim. It also lists 1,000 Common Shares linked to Restricted Stock Units dated 02/23/2026.

These items are routine compensation-related disclosures. Cash‑flow treatment and any planned resale mechanics are not detailed in the excerpt; subsequent filings would show method and timing if required.

FAQ

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

What did the CNR filing disclose about insider John Rothka?

The filing discloses a sale of 3,800 shares of Common Stock by John Rothka on 03/10/2026 for $348,150. It also lists 1,000 shares tied to Restricted Stock Units dated 02/23/2026.

When was the 3,800-share sale executed for CNR?

The sale of 3,800 shares is dated 03/10/2026 in the filing. The document reports the transaction amount as $348,150 alongside the share count and trade date.

Does the filing state proceeds recipient or use of proceeds for the sale?

The excerpt reports the sale amount of $348,150 but does not specify who received the proceeds or how they will be used. The filing text provides the sale amount and date without further cash‑flow details.

What do the listed Restricted Stock Units in the CNR filing indicate?

The filing lists 1,000 Common Shares associated with Restricted Stock Units dated 02/23/2026 under equity compensation. The entry identifies the award date and share count but does not state whether a resale has occurred.

Which broker is shown on the filing for these transactions?

The filing lists Stifel Nicolaus & Company Inc at 501 N Broadway, St. Louis, MO in connection with the securities information. No additional broker activity details are included in the excerpt.

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

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Accepted by SEC EDGAR 03/17/2026 - 04:03 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	0001713960
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	Rothka John
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 Stock	Stifel Nicolaus & Company Inc 501 N Broadway St. Louis MO 63102	1000	97660.00	50979544	03/17/2026	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 Stock	02/23/2026	Restricted Stock Units	Issuer			1000	02/23/2026	Equity Compensation

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
John Rothka 2850 Frontier Dr Warsaw IN 46582	Common Stock	03/10/2026	3800	348150.00

144: Remarks and Signature

Remarks
Date of Notice	03/17/2026
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/ Luca Lotito, as a duly authorized representative of STIFEL, as attorney-in-fact for John Rothka
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)