McEwen Mining’s 2nd 10-K amendment boosts transparency with MSC data

Q: What ownership stake does MUX hold in Minera Santa Cruz S.A.?

McEwen Mining owns 49% of MSC, accounted for under the equity method.

Q: Does the amendment change McEwen’s previously reported FY 2024 GAAP results?

No. The filing explicitly states no modifications were made to the consolidated financial statements or disclosures.

Q: What is McEwen Mining’s market capitalization as referenced in the filing?

As of 30 Jun 2024, non-affiliate market value was $468.9 million based on a $9.18 share price.

Filing Impact

(Low)

Filing Sentiment

(Neutral)

Form Type

10-K/A

Rhea-AI Filing Summary

McEwen Mining Inc. (NYSE: MUX) filed Amendment No. 2 to its FY 2024 Form 10-K to comply with Rule 3-09 of Regulation S-X. The filing adds full IFRS-based financial statements for Minera Santa Cruz S.A. (MSC), a 49%-owned equity investee that exceeded the 20% significance threshold in 2022-2024. Key inclusions are: Statements of Financial Position (12/31/24 & 12/31/23), Statements of Profit/Loss, OCI, Changes in Equity, and Cash Flows for 2022-2024, plus accompanying notes.

The amendment also furnishes: (i) Ernst & Young LLP consent, (ii) independent auditors’ consent for MSC, and (iii) new CEO/CFO Section 302 and 906 certifications. No revisions were made to McEwen’s previously reported US-GAAP results, and the company cautions that MSC’s IFRS figures may differ from the equity method amounts already reflected in MUX’s GAAP financials. Aside from the added exhibits, all other disclosures remain as of the original filing date (14 Mar 2025); the document does not update subsequent events or guidance.

As of 30 Jun 2024, McEwen’s non-affiliate market cap was $468.9 million (53.9 million shares at $9.18). The company remains an accelerated filer, non-shell issuer, and its auditor continues to report on internal controls under SOX 404(b).

Positive

Regulatory compliance strengthened: inclusion of MSC’s audited financials satisfies Rule 3-09 obligations, reducing risk of SEC comment or penalty.
Enhanced transparency: investors receive full IFRS statements for a 49%-owned, financially significant mining asset.
Auditor and management certifications re-filed, reaffirming internal control effectiveness under SOX 404(b).

Negative

Disclosure gap acknowledged: need for a second 10-K amendment signals prior reporting deficiencies.
Complexity for analysts: MSC results under IFRS differ from GAAP equity-method amounts, complicating comparability.
Reliance caution: company warns readers about potential inconsistencies between standalone MSC data and previously reported consolidated figures.

Insights

TL;DR: Second 10-K amendment adds required MSC IFRS statements; compliance move, limited earnings impact, signals prior disclosure gap.

The amendment is procedural. Rule 3-09 obliges separate financials when an equity investee crosses the 20% significance test. By furnishing MSC’s audited IFRS statements and updated officer certifications, McEwen mitigates SEC compliance risk and potential filing deficiencies. There is no change to consolidated GAAP numbers, cash flows, or guidance, so valuation models for MUX do not require adjustment. Investors should note possible analytical complexity: MSC figures under IFRS may not reconcile directly with GAAP equity-method earnings already booked.

Overall market impact is neutral: transparency improves, but the need for a second amendment highlights earlier omissions, a mild governance concern. Liquidity, capital resources, and mine performance metrics are untouched.

06/27/2025 - 04:30 PM

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

(Amendment No. 2)

☒	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2024

☐	TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from __________ to __________

Commission file number 001-33190

MCEWEN MINING INC.

(Exact name of registrant as specified in its charter)


Colorado		84-0796160
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
150 King Street West, Suite 2800, Toronto, Ontario Canada (Address of principal executive offices)		M5H 1J9 (Zip Code)

(866) 441-0690

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:


Common Stock, no par value	MUX	NYSE
Title of each class	Trading Symbol(s)	Name of each exchange on which registered

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and emerging growth company in Rule 12b-2 of the Exchange Act.


Large accelerated filer ☐	Accelerated filer ☒
Non-accelerated filer ☐	Smaller reporting company ☐
	Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C 7262 (b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to § 240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of June 30, 2024 (the last business day of the registrant’s second fiscal quarter), the aggregate market value of the registrant’s voting and non-voting common equity held by non-affiliates of the registrant was $468,851,994 based on the closing price of $9.18 per share as reported on the NYSE. There were 53,934,510 shares of common stock outstanding on March 14, 2025.

DOCUMENTS INCORPORATED BY REFERENCE: Portions of the registrant’s Proxy Statement for the 2025 Annual Meeting of Shareholders are incorporated into Part III, Items 10 through 14 of this report.

Auditor Name: Ernst & Young LLP Auditor Location: Toronto, Canada Auditor Firm ID: 1263

EXPLANATORY NOTE

McEwen Mining Inc. (the “Company”) is filing this Amendment No. 2 on Form 10-K/A (this “Amendment”) to its Annual Report on Form 10-K for the year ended December 31, 2024 filed with the U.S. Securities and Exchange Commission (“SEC”) on March 14, 2025 (the “Original Filing”) to amend Item 15 of Part IV of the Original Filing, pursuant to Rule 3-09 of Regulation S-X, to include the financial statements and related notes of Minera Santa Cruz S.A (“MSC”), a significant equity investee in which the Company holds a 49% equity ownership interest. In addition, the Company is filing the consent of the independent auditors of MSC and, as required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), new certifications by the Company’s Chief Executive Officer and Chief Financial Officer.

Rule 3-09 of Regulation S-X provides that if a 50%-or-less-owned person accounted for by the equity method meets the first or third condition of the significant subsidiary tests set forth in Rule 1-02(w) of Regulation S-X, substituting 20% for 10%, separate financial statements for such 50%-or-less-owned person shall be filed. These financial statements shall be prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) or IFRS Accounting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). MSC met the significant subsidiary test described above for the Company’s fiscal years ending December 31, 2024, 2023 and 2022 and accordingly, the Company has included in this Amendment the required Statements of Financial Position as of December 31, 2024 and 2023, and the related Statements of Profit (Loss) and Other Comprehensive Income, Statements of Changes in Equity, and Statements of Cash Flows for the years ended December 31, 2024, 2023 and 2022, and the accompanying Notes to the Financial Statements of MSC, prepared in accordance with IFRS. We caution readers that the MSC financial results included in our Annual Report on Form 10-K are presented in accordance with US GAAP and may therefore differ from the MSC results presented as separate financial statements reported under IFRS.

No attempt has been made in this Amendment to modify or update the disclosures in the Original Filing except as required to reflect the effect of the revisions discussed herein. Except as otherwise noted herein, this Amendment continues to describe conditions as of the date of the Original Filing and the disclosures contained herein have not been updated to reflect events, results or developments that occurred after the date of the Original Filing, or to modify or update those disclosures affected by subsequent events. Among other things, forward-looking statements made in the Original Filing and Prior Amendment have not been revised to reflect events, results or developments that occurred or facts that became known to us after the date of the Original Filing, and such forward-looking statements should be read in conjunction with our filings with the SEC subsequent to the filing of the Original Filing. Accordingly, this Amendment should be read in conjunction with the Original Filing and the Company’s other filings with the SEC subsequent to March 14, 2025. Furthermore, readers are cautioned to review the reliability of information disclosure, contained in our Annual Report on Form 10-K, pertaining to the disclosure of MSC results.

PART IV

ITEM 15.EXHIBITS, FINANCIAL STATEMENT SCHEDULES

The exhibits listed in the accompanying exhibit index are filed (except where otherwise indicated) as part of this report:


3.1.1		Second Amended and Restated Articles of Incorporation of the Company as filed with the Colorado Secretary of State on January 20, 2012 (incorporated by reference from the Current Report on Form 8-K filed with the SEC on January 24, 2012, Exhibit 3.1, File No. 001-33190).
3.1.2		Articles of Amendment to the Second Amended and Restated Articles of Incorporation of the Company as filed with the Colorado Secretary of State on January 24, 2012 (incorporated by reference from the Current Report on Form 8 K filed with the SEC on January 24, 2012, Exhibit 3.2, File No. 001-33190).
3.1.3		Articles of Amendment to the Second Amended and Restated Articles of Incorporation (incorporated by reference from the Current Report on the Form 8-K filed with the SEC on June 30, 2021, Exhibit 3.1, File No. 001-33190).
3.1.4		Articles of Amendment to the Second Amended and Restated Articles of Incorporation as filed with the Colorado Secretary of State on July 25, 2022 (incorporated by reference from the Current Report on the Form 8-K filed with the SEC on July 28, 2022, Exhibit 3.1, File No. 001-33190).
3.1.5		Articles of Amendment to the Second Amended and Restated Articles of Incorporation as filed with the Colorado Secretary of State on June 30, 2023 (incorporated by reference from the Current Report on the Form 8-K filed with the SEC on July 03, 2023, Exhibit 3.1, File No. 001-33190).
3.2		Amended and Restated Bylaws of the Company (incorporated by reference from the Current Report on Form 8-K filed with the SEC on March 12, 2012, Exhibit 3.2, File No. 001-33190).
4.1		Description of Capital Stock of the Company (incorporated by reference from the Annual Report on Form 10-K for the fiscal year ended December 31, 2019, filed with the SEC on March 16, 2020, Exhibit 4.1, File No. 001-33190).
4.2		Form of Warrant to Purchase Common Stock issued by the Company in connection with November 2019 financing (incorporated by reference from the Current Report on Form 8-K filed with the SEC on November 22, 2019, Exhibit 4.1, File No. 001-33190).
21*		List of subsidiaries of the Company (incorporated by reference from the Annual Report Form 10-K filed with the SEC on March 14, 2025, Exhibit 21, File No. 001-33190)
23.1*		Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm (incorporated by reference from the Annual Report Form 10-K filed with the SEC on March 14, 2025, Exhibit 22, File No. 001-33190).
23.19+		Consent of Independent Auditors.
31.1+		Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 for Robert R. McEwen, principal executive officer.
31.2+		Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 for Perry Ing, interim chief financial officer.
32+		Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 for Robert R. McEwen and Perry Ing.
95*		Mine safety disclosure (incorporated by reference from the Annual Report on Form 10-K filed with the SEC on March 14, 2025, Exhibit 95, File No. 001-33190).
99.1+		Audited Financial Statements of Minera Santa Cruz S.A for the years ended December 31, 2024 and 2023, with report of Independent Auditor.
101.SCH		Inline XRBL Taxonomy Extension Schema Document.
101.CAL		Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF		Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB		Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE		Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

* Previously filed with or incorporated by reference in the original filing filed on March 14, 2025.

+ Filed or furnished with this report.

SIGNATURES

In accordance with Section 13 or 15(d) of the Exchange Act, the Company caused this amended report to be signed on its behalf by the undersigned, thereunto duly authorized.



MCEWEN MINING INC.


	By:	/s/ Perry Y. Ing
Dated: June 27, 2025		Perry Y. Ing, Interim Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

Source: View Original Filing on SEC EDGAR

FAQ

Why did McEwen Mining (MUX) file a second Form 10-K/A?

To add Minera Santa Cruz’s audited IFRS financial statements as required by Rule 3-09, plus related auditor consents and officer certifications.

What ownership stake does MUX hold in Minera Santa Cruz S.A.?

McEwen Mining owns 49% of MSC, accounted for under the equity method.

Does the amendment change McEwen’s previously reported FY 2024 GAAP results?

No. The filing explicitly states no modifications were made to the consolidated financial statements or disclosures.

What is McEwen Mining’s market capitalization as referenced in the filing?

As of 30 Jun 2024, non-affiliate market value was $468.9 million based on a $9.18 share price.

Were new SOX certifications filed?

Yes. Updated Section 302 and 906 certifications were signed by CEO Robert R. McEwen and Interim CFO Perry Ing.

Will MSC’s IFRS numbers match the equity income reported by MUX?

Not necessarily; the company cautions that IFRS standalone data may differ from GAAP equity-method amounts in MUX’s statements.

McEwen Mining’s 2nd 10-K amendment boosts transparency with MSC data