Rio Silver Highlights Underexplored Silver-Gold Potential at Maria Norte Within a Proven Peruvian Mining District

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Exploration and Development Opportunity

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Maria Norte has been held for approximately 18 years by prior operators, during which time exploration activity was limited primarily to surface mapping and selective sampling. Several exposed veins and vein splays remain undocumented by modern exploration methods. Subject to access and permitting, the Company plans to advance systematic surface mapping and sampling during the Q3 2026 dry season.

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For context, SilverX has reported that its Tangana West area hosts multiple documented veins and vein splits adjacent to the same regional fault system. Within this corridor, Rio Silver controls approximately 500 metres of Las Animas vein outcrop mapped along approximately 1.5 kilometres of strike. Public disclosures by SilverX report vein widths and grades within the broader Tangana system; however, these data are provided for contextual purposes only and are not indicative of mineralization on Rio Silver’s property.

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Management Commentary

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“Maria Norte sits within a proven silver district, and the structural setting gives us a compelling geological framework to work from,” said Chris Verrico, Chief Executive Officer of Rio Silver. “What excites us is not only the extent of underexplored ground relative to nearby operations, but the fact that much of this mineralization was historically overlooked when silver and gold prices were a fraction of where they are today. Material that was once disregarded under past economic conditions may warrant a very different assessment in the current price environment. While adjacent mining activity provides valuable district context, our opportunity lies in advancing access to systematically evaluate what we believe is a rare opportunity to pursue high-impact development targets within a disciplined, capital-efficient framework.”

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Moving Ahead

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The Company’s near-term focus includes:

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Why This Matters to Investors

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For investors, Maria Norte offers exposure to a silver-dominant mineralized system within an established mining district, where nearby operations provide real-world geological and operational context. While each project is unique and outcomes cannot be inferred from adjacent properties, the combination of structural continuity, multiple vein systems, and limited modern exploration highlights the potential for meaningful upside as Rio Silver advances access, exploration and development, alongside metallurgy, and technical work. When paired with a staged, low-capex development strategy, this positions the Company for value creation as execution milestones are achieved.

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Cautionary note: the potential quantity and grade is conceptual in nature, that there has been insufficient exploration to define a mineral resource at this time and that it is uncertain if further exploration will result in the target being delineated as a mineral resource.

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Qualified Person

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Jeffrey Reeder, P.Geo., is a Qualified Person as defined by National Instrument 43-101 and has reviewed and approved the technical information contained in this news release. Mr. Reeder is a consultant to the Company and is not independent within the meaning of NI 43-101.

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About Rio Silver Inc.

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Rio Silver Inc. (TSX-V: RYO | OTC: RYOOF) is a Canadian resource company advancing high-grade, silver-dominant assets in Peru, the world’s second-largest silver producer. The Company is focused on near-term development opportunities within proven mineral belts and is supported by a seasoned technical and operational team with deep experience in Peruvian geology, underground mining, and district-scale exploration. With a clear development strategy and a growing portfolio of highly prospective silver assets, Rio Silver is establishing the foundation to become one of Peru’s next emerging silver producers.