McEwen (NYSE: MUX) (TSX: MUX) announced it has amended and refiled its "NI 43-101 Technical Report on the Mineral Resources Estimate of the Fox Complex, Ontario, Canada," originally filed April 4, 2025, following a review by the Ontario Securities Commission as part of its continuous disclosure program. The updated report now includes additional information required under Items 16 to 22 of Form 43-101F1 for an advanced property and replaces John Ryan Cox as a co-author to ensure compliance with Qualified Person requirements. No other changes were made, and the Mineral Resources statements for the Fox Complex remain unchanged.

To view the full press release, visit https://ibn.fm/7Ujah

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".

NOTE TO INVESTORS: The latest news and updates relating to MUX are available in the company's newsroom at https://ibn.fm/MUX

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COMTEX_469887319/2557/2025-10-29T09:22:22