McEwen Copper Inc., a subsidiary of McEwen Mining Inc. (NYSE: MUX) (TSX: MUX), is pleased to announce closing of an additional $35 million investment by Nuton LLC, a Rio Tinto Venture.

McEwen Copper previously announced a non-brokered private placement financing of up to 2,333,333 common shares at a subscription price of US$30.00 per common share, for gross proceeds of up to US$70 million. The first tranche of the Offering was led by a $14 million investment by McEwen Mining and a $5 million investment by Rob McEwen.

In this second tranche of the Offering, Nuton (a Rio Tinto Venture) has purchased an additional 1,166,666 common shares of McEwen Copper for $35 million and two other investors have acquired 66,669 common shares for $2 million. Following the closing of this second tranche of the Offering, McEwen Copper has raised a total of $56 million.

Nuton now owns 17.2% of McEwen Copper on a fully diluted basis. Following these share issuances, McEwen Copper will have 32,804,284 common shares outstanding, giving it a post-money market value of $984 million, and its shareholders are: McEwen Mining Inc. 46.4%, Stellantis 18.3%, Nuton 17.2%, Rob McEwen 12.7%, Victor Smorgon Group 3.0%, and other shareholders 2.0%.

Proceeds from the Offering will be used to advance ongoing work on the feasibility study for the Los Azules copper project, which is scheduled for publication in the first half of 2025.

Subscription for the remaining 466,664 common shares in the Offering is available to qualified accredited investors, subject to a US$1 million minimum investment and certain other conditions. The securities sold in the Offering are private and subject to transfer restrictions until such time when they become listed on a public exchange.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful.

About Nuton

Nuton is an innovative venture that aims to help grow Rio Tinto’s copper business. At the core of Nuton is a portfolio of proprietary copper leaching related technologies and capability – a product of almost 30 years of research and development. Nuton offers the potential to economically unlock copper from primary sulfide resources through leaching, achieving market-leading recovery rates and contributing to an increase in copper production at new and ongoing operations. One of the key differentiators of Nuton is the ambition to produce the world’s lowest footprint copper while having at least one Positive Impact at each of our deployment sites, across our five pillars: water, energy, land, materials and society.

About McEwen Copper

McEwen Copper Inc. holds a 100% interest in the Los Azules copper project in San Juan, Argentina and the Elder Creek copper/gold project in Nevada, USA.

Los Azules was ranked in the top 10 largest undeveloped copper deposits in the world by Mining Intelligence (2022). A PEA published in June 2023 for the project estimated a $2.7 billion after-tax NPV8% at $3.75/lb Cu, a 27-year mine life, and an updated copper resource of 10.9 billion pounds at grade 0.40% Cu (Indicated category) and an additional 26.7 billion pounds at grade 0.31% Cu (Inferred category). For more details about the Los Azules PEA click here.