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McEwen Inc. Page 1 McEwen Inc. Refiles the Technical Report for Fox Complex

Technical Reports (NI 43-101)

McEwen Inc. Page 1

McEwen Inc. Refiles the Technical Report for Fox Complex

TORONTO, Oct. 28, 2025 (GlobeNewswire) - McEwen Inc. (NYSE/TSX: MUX) (“McEwen” or the “Company”)

announces that, as a result of a review by staff of the Ontario Securities Commission (“OSC”), we are issuing

the following news release regarding our disclosure on the Fox Complex. The Company has amended and

refiled its Technical Report titled “NI 43-101 Technical Report on the Mineral Resources Estimate of the Fox

Complex, Ontario, Canada”, originally filed on April 4, 2025.

The OSC review was conducted as part of its continuous disclosure review program, specifically in relation to the

requirements under National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

The Company has addressed the following items in the amended Technical Report:

• Technical Report Not Prepared in Compliance with Form 43-101F1: The Technical Report now

includes the information required under Items 16 to 22 of Form 43-101F1 for an advanced property that

was previously omitted from the original filing.

• Qualified Person: John Ryan Cox was replaced as a co-author of the report to comply with NI 43-101

requirements for Qualified Persons.

No further amendments were made to the Technical Report. Note that the Mineral Resources statements

for the Fox Complex remain unchanged.

ABOUT MCEWEN

McEwen provides its shareholders with exposure to gold, copper and silver in the Americas through its three

mines located in the USA, Canada and Argentina and its large advanced-stage copper development project in

Argentina. It also has a gold and silver mine on care and maintenance in Mexico. Its Los Azules copper project

aims to become one of the world’s first regenerative copper mines and is committed to carbon neutrality by 2038.

McEwen's shares are publicly traded on the New York Stock Exchange (NYSE) and the Toronto Stock

Exchange (TSX) under the symbol "MUX".

CAUTION CONCERNING FORWARD-LOOKING STATEMENTS

This news release contains certain forward-looking statements and information, including "forward-looking statements"

within the meaning of the Private Securities Litigation Reform Act of 1995. The forward-looking statements and information

expressed, as at the date of this news release, McEwen Inc.'s (the "Company") estimates, forecasts, projections,

McEwen Inc. Page 2

expectations or beliefs as to future events and results. Forward-looking statements and information are necessarily based

upon a number of estimates and assumptions that, while considered reasonable by management, are inherently subject

to significant business, economic and competitive uncertainties, risks and contingencies, and there can be no assurance

that such statements and information will prove to be accurate. Therefore, actual results and future events could differ

materially from those anticipated in such statements and information. Risks and uncertainties that could cause results or

future events to differ materially from current expectations expressed or implied by the forward-looking statements and

information include, but are not limited to, fluctuations in the market price of precious metals, mining industry risks, political,

economic, social and security risks associated with foreign operations, the ability of the Company to receive or receive in

a timely manner permits or other approvals required in connection with operations, risks associated with the construction

of mining operations and commencement of production and the projected costs thereof, risks related to litigation, the state

of the capital markets, environmental risks and hazards, uncertainty as to calculation of mineral resources and reserves,

foreign exchange volatility, foreign exchange controls, foreign currency risk, and other risks. Readers should not place

undue reliance on forward-looking statements or information included herein, which speak only as of the date hereof. The

Company undertakes no obligation to reissue or update forward-looking statements or information based upon new

information or events after the date hereof except as may be required by law. See McEwen Inc.'s Annual Report on Form

10-K for the fiscal year ended December 31, 2024, and other filings with the Securities and Exchange Commission, under

the caption "Risk Factors", for additional information on risks, uncertainties and other factors relating to the forward-looking

statements and information regarding the Company. All forward-looking statements and information made in this news

release are qualified by this cautionary statement.

The NYSE and TSX have not reviewed and do not accept responsibility for the adequacy or accuracy of the

contents of this news release, which has been prepared by the management of McEwen.

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McEwen

Facebook: facebook.com/mceweninc

LinkedIn: linkedin.com/company/mceweninc

CONTACT INFORMATION X: X.com/mceweninc

150 King Street West Instagram: instagram.com/mceweninc

Suite 2800, PO Box 24

Toronto, ON, Canada

McEwen Copper

Facebook: facebook.com/ mcewencopper

M5H 1J9 LinkedIn: linkedin.com/company/mcewencopper

X: X.com/mcewencopper

Relationship with Investors: Instagram: instagram.com/mcewencopper

(866)-441-0690 - Toll free line

(647)-258-0395

Rob McEwen

Facebook: facebook.com/mcewenrob

Mihaela Iancu ext. 320 LinkedIn: linkedin.com/in/robert-mcewen-646ab24

[email protected] X: X.com/robmcewenmux