Initial Test Work Demonstrates Good Silver Recovery, High Grade Concentrates and Low Arsenic, through conventional flotation methods, in Historic Peruvian Silver District

Rio Silver Inc. (TSX-V: RYO) (OTC: RYOOF) is pleased to provide an update on the progress made by the Company regarding its ongoing metallurgical work on the Maria Norte silver-gold-lead property. The most recent metallurgical results indicate that high silver and gold recoveries are achievable.

The Maria Norte silver-gold-lead property is located in the historic Huachocolpa Mining District in central Peru and covers an area of approximately 388 hectares. The Property is accessible by road and is adjacent to Silver X’s Tangana mining unit currently in production. Permitting is in progress and documentation has been submitted. Bulk sampling extraction is permitted while awaiting final approval for the environmental permit (IGAC) from the Peruvian government.

Metallurgical Results Support Processing Strategy

Initial metallurgical results have confirmed the high recoveries of silver and gold at Maria Norte. The zinc content is determined to be insignificant compared with the silver-gold-lead. Metallurgical work and future processing focused on the recoveries of silver-gold-lead and therefore, the Company will design its processing methods to produce two concentrates consisting of a silver-gold-lead concentrate and a lower grade gold-silver-pyrite concentrate with minor amounts of lead. More importantly concentrates are expected to contain low amounts of arsenic.

A large composite sample over several tens of metres was recently taken from one of the surface showings exposing a quartz-lead (“Qtz-Pb”) sulphide vein with widths varying between 0.3 to 1.0 metre in width. The head grade of the composite sample returned 3.00 grams per metric tonne gold and 4.32 ounces per metric tonne silver, 4.05% lead and 1.61% lead oxide. Metallurgical results using flotation methods produced two concentrates. The first concentrate returned a mineral to concentrate ratio of 25 to 1, assaying 14.57 grams per metric tonne gold, 53.64 ounces per metric tonne silver, and 54.17% lead. The second concentrate showed a mineral to concentrate ratio of 6.2 to 1 assaying 10.16 grams per metric tonne gold, 9.67 ounces per metric tonne silver and 13.85% lead. Both concentrates returned low arsenic levels returning 0.33 % and 0.36% respectfully.

Chris Verrico the CEO of Rio Silver Inc. comments,

“The initial metallurgical work shows that the concentrates produced from the quartz-lead veins are returning good recoveries and low arsenic content. We are aware that this mineral will be highly marketable in Peru since it could be blended with gold-silver-lead concentrates that contain elevated arsenic levels. Further metallurgical work is ongoing as it appears that there exis t two different vein set types, that may require different methods of processing optimization, to achieve optimal recoveries.

We are focused on advancing toward bulk sampling, concentrate generation, and processing in 2026 and 2027, and we are highly encouraged by the progress being made. The months ahead are expected to be active as we continue executing on our strategy. I can say with confidence that the Company is in the strongest position it has ever been in, both operationally and financially.”

Jeffrey Reeder P.Geo, a qualified person as defined in NI 43-101, has prepared, supervised the preparation or approved of the scientific and technical disclosure contained in this news release. The metallurgical work was performed by Jose Orlando Moncada Rejas, Ing, who is the metallurgist responsible for the work performed. Assaying of the material was performed by Procesmin Ingenieros SRL, located in Caraz Ancash, by fire assay for gold-silver.

About Rio Silver Inc.

Rio Silver Inc. 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.