McEwen Inc. (MUX) files late Form 10-K after EDGAR technical failure

Rhea-AI Filing Summary

McEwen Inc. notified the SEC that it could not timely file its Form 10-K for the year ended December 31, 2025 due to unforeseen technical issues with its EDGAR filing service provider. The company caused the Form 10-K to be filed within the 15-day grace period under Rule 12b-25 and states it may request an adjusted filing date of March 16, 2026 pursuant to Rule 13(b) of Regulation S-T.

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​ ​ UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 ​ FORM 12b-25 ​ NOTIFICATION OF LATE FILING ​ ​

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(Check one):	​	⌧ Form 10-K	◻ Form 20-F		◻ Form 11-K	◻ Form 10-Q	◻ Form 10-D
​	​	◻ Form N-CEN	◻ Form N-CSR		​	​	​
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​	​	For Period Ended:	December 31, 2025
​	​	◻ Transition Report on Form 10-K				​	​
​	​	◻ Transition Report on Form 20-F				​	​
​	​	◻ Transition Report on Form 11-K				​	​
​	​	◻ Transition Report on Form 10-Q				​	​
​	​	For the Transition Period Ended:		​

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Read Instructions (on back page) Before Preparing Form. Please Print or Type.
Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

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If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

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PART I — REGISTRANT INFORMATION

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MCEWEN INC.

Full Name of Registrant

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Former Name if Applicable

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150 King Street West, Suite 2800

Address of Principal Executive Office (Street and Number)

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Toronto, Ontario Canada M5H 1J9

City, State and Zip Code

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PART II — RULES 12b-25(b) AND (c)

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If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

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​	(a)	The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense
⌧ ​ ​ ​	(b)	The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-CEN or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and
​	(c)	The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

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PART III — NARRATIVE

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State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CEN, or the transition report or portion thereof, could not be filed within the prescribed time period.

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The Registrant was unable to file its Form 10-K for the year ended December 31, 2025 (“Form 10-K”) within the prescribed time period without unreasonable effort or expense because unforeseen technical issues prevented its EDGAR filing service provider from completing the filing as instructed by the Registrant before the deadline. The Registrant’s EDGAR filing service provider was able to complete the filing as instructed after hours on the filing due date a therefore the Registrant has caused its Form 10-K to be filed within the fifteen-day grace period provided by Rule 12b-25 of the Securities Exchange Act of 1934, as amended.  Under the circumstances, the Registrant may submit a written request to the Securities and Exchange Commission to adjust the filing submission date of the Form 10-K to March 16, 2026, pursuant to Rule 13(b) of Regulation S-T, as a precautionary matter to ensure that it remains timely in its periodic filings under the Securities Exchange Act of 1934, as amended.

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PART IV — OTHER INFORMATION

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(1)	Name and telephone number of person to contact in regard to this notification
​	Perry Ing	​	(647)	​	258-0395
​	(Name)	​	(Area Code)	​	(Telephone Number)
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(2)	Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If answer is no, identify report(s).
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​	​	​	​	​	⌧ Yes    ◻ No
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(3)	Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?
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​	​	​	​	​	◻ Yes    ⌧ No
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​	If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made. ​

MCEWEN INC.

(Name of Registrant as Specified in Charter)

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has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.

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Date	March 16, 2026	​	​	/s/ Perry Ing
​	​	​	​	By: Perry Ing,
​	​	​	​	Chief Financial Officer

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INSTRUCTION: The form may be signed by an executive officer of the registrant or by any other duly authorized representative. The name and title of the person signing the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized representative (other than an executive officer), evidence of the representative’s authority to sign on behalf of the registrant shall be filed with the form.

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​	ATTENTION	​
Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).

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FAQ

Why did McEwen Inc. (MUX) miss the original Form 10-K deadline?

The company cites unforeseen technical issues with its EDGAR filing service provider that prevented completion of the filing before the deadline. The provider completed the filing after hours on the due date and within the Rule 12b-25 grace period.

Has McEwen Inc. (MUX) filed the Form 10-K for the year ended December 31, 2025?

Yes. McEwen Inc. states it caused the Form 10-K to be filed within the fifteen-day grace period provided by Rule 12b-25. The filing was completed after hours on the original due date by the registrant’s EDGAR service provider.

Will McEwen Inc. (MUX) request any formal adjustment to the filing date?

The registrant indicates it may submit a written request to the SEC to adjust the filing submission date to March 16, 2026 under Rule 13(b) of Regulation S-T as a precautionary measure to ensure timeliness.

Did McEwen Inc. (MUX) report other periodic filings were delinquent in the last 12 months?

No. The notice states that all other periodic reports required under Section 13 or 15(d) during the preceding 12 months have been filed. The registrant checked 'Yes' to that question in Part IV.

Does McEwen Inc. (MUX) anticipate a significant change in results of operations in the Form 10-K?

No. The company indicated in the notice that it does not anticipate any significant change in results of operations from the corresponding period for the last fiscal year to be reflected in the earnings statements.