Rio Silver Inc. (TSX-V: RYO | OTC: RYOOF) (‘Rio Silver’ or the ‘Company’) is pleased to provide an update on its Maria Norte gold-silver-lead-zinc Project in central Peru, following the completion of recent technical work and site activities conducted in accordance with National Instrument 43-101. The results confirm the presence of high-grade silver mineralization, favorable geological and metallurgical characteristics, and a clear pathway toward near-term development within one of Peru’s most prolific silver districts.

Figure 1: Maria Norte Silver Project – NI 43-101 Verification Sampling Locations
Map outlining concession boundaries and surface verification sampling locations at Rio Silver’s Maria Norte high-grade silver project in central Peru.

High-Grade Silver Confirmed by Verification Sampling

As part of the independent National Instrument 43-101 review, verification sampling was conducted by James A. McCrea, P.Geo., the independent author of the NI 43-101 Technical Report, during a site visit to the Maria Norte Project in June 2025. Sampling targeted surface vein exposures and historic waste material and returned high-grade silver values, including:

• 869 g/t silver, with associated lead and zinc, from a 0.5-metre surface vein channel sample
• 991 g/t silver from a 0.7-metre surface vein channel sample
• 396 g/t silver from a historic waste dump grab sample

Table 1: Maria Norte Verification Sampling Results (NI 43-101)*

*Verification sampling returned silver values ranging from 396 g/t Ag to 991 g/t Ag, with associated lead, zinc, and localized gold values. These results confirm the presence of high-grade silver mineralization at surface, consistent with historical sampling by previous operators and characteristic of low-sulphidation epithermal vein systems common to the Huachocolpa District.

A total of four (4) verification samples were collected, consisting of three (3) chip samples from surface vein outcrops and one (1) grab sample from a historic waste dump, with chip sample widths ranging from approximately 0.4 metres to 0.7 metres. All samples were bagged, labelled, and sealed in the field using single-use security ties, transported by the author to Lima, Peru, and analyzed by Certimin S.A., an ISO 9001–certified laboratory located in the Santiago de Surco municipality of Lima.

No additional quality control samples (blanks, standards, or duplicates) were inserted due to the limited number of samples collected, which the author considered appropriate for the exploration stage of the project. James A. McCrea, P.Geo. concluded that the sampling methods, sample handling, preparation, and analytical procedures are adequate for data verification purposes, and that the results are representative of the surface mineralization observed at Maria Norte.

CEO Comment

‘The confirmation of high-grade silver at Maria Norte reinforces what initially attracted us to this project,’ said Chris Verrico, President and Chief Executive Officer of Rio Silver. ‘These are good grades in a district known for long-life silver production, and as our team continues work on the ground, we are seeing encouraging geological indications that suggest the system may extend beyond what is currently exposed. Combined with existing infrastructure, favorable metallurgy, and strong community engagement, we believe Maria Norte offers a compelling opportunity to advance toward development while continuing to unlock further upside.’

Proven Geological Setting in a Renowned Silver District

Maria Norte is situated within the Miocene polymetallic belt of central Peru, a region that has supported decades of silver production from structurally controlled epithermal vein systems. Mineralization at Maria Norte occurs within quartz-sulphide veins and breccias, hosting silver-dominant mineralization with associated lead, zinc, and local gold values.

Mapping and structural interpretation indicate that mineralization is controlled by a well-defined vein corridor with favorable geometry for continuity along strike and at depth. This geological setting mirrors other productive operations in the district and supports the Company’s development-focused exploration strategy.

Infrastructure, Metallurgy, and Development Readiness

Historic metallurgical test work reviewed by the Company indicates that mineralization at Maria Norte responds to conventional flotation methods. Combined with the project’s location within a well-established mining district, this supports a development approach that emphasizes efficiency and capital discipline.

Key advantages at Maria Norte include:

• Favorable Metallurgy: Historic test work indicates amenability to conventional flotation processes.
• Established Infrastructure: Road access and operating processing facilities are located approximately 11 kilometers from the project.
• Reduced Capital Intensity: Proximity to existing mills has the potential to lower upfront capital requirements, shorten development timelines and reduce exposure to environmental costs related to mill operation.
• Experienced Mining District: Maria Norte is located within one of Peru’s longest-producing silver regions, which has a well-established, supportive mining culture, and experienced local workforce.

Following the recent approval of the Maria Norte acquisition, Rio Silver has advanced boots-on-the-ground activities, including site access planning, infrastructure assessments, and early permitting preparations. In parallel, the Company continues constructive engagement with local community leaders, building on a foundation of cooperation in one of Peru’s most established and supportive mining regions.

Positioned for Near-Term Development

Rio Silver’s strategy at Maria Norte is focused on advancing accessible, high-grade mineralization through staged development while continuing exploration to expand the known system. Under Peru’s established exploration and exploitation framework, development activities can progress alongside exploration, allowing the Company to advance the project efficiently and responsibly.

Management believes that the combination of verified high-grade silver, nearby processing capacity, and an experienced in-country team places near-term development firmly within the Company’s strategic horizon, subject to continued technical success and permitting.

Next Steps

• Advance Development Planning at Maria Norte: Continue site preparation activities, infrastructure assessments, and permitting work in support of staged underground access targeting accessible high-grade silver mineralization.
• Expand Geological Understanding of the System: Complete detailed mapping, channel sampling, and geophysical surveys to refine priority targets and assess continuity along strike and at depth within the known vein corridor.
• Progress Community and Stakeholder Engagement: Maintain active dialogue with local communities and stakeholders to finalize access agreements and support responsible development as work programs advance.
• Parallel Metallurgical Work at Santa Rita: Advance ongoing metallurgical test work to better understand mineral processing characteristics while technical evaluations and project integration continue.

Why This Matters to Investors

As global silver markets continue to experience structural supply deficits, projects capable of advancing high-grade silver toward development are scarce. Maria Norte stands out due to its verified grades, district-scale setting, proximity to operating mills, and disciplined development strategy. With key technical milestones achieved and field activities advancing, Rio Silver believes it is well positioned to deliver continued progress and value creation for all stakeholders as the silver cycle unfolds.

Data Verification and Qualified Persons

The author’s verification samples were sent to Certimin S.A. laboratories in the Santiago de Surco Municipality of Lima. Samples were collected in the field under the supervision of the author, as chip samples from vein outcrops and a grab sample from a waste dump; the samples were bagged, labelled and sealed with one-use ties at the time they were taken. The samples were transported by the author, from the Project to Lima and then to Certimin S.A. in Lima for final preparation. Certimin complies with ISO 9001, OHSAS 18001 and is a fully recognized and certified facility. Locations of the samples were outlined NI43-101 Technical Report on the Maria Norte Au-Ag-Pb-Zn by Independent Geologist James McCrea P.Geo filed on Sedarplus December 16^th, 2025.

Historic metallurgical work and the results are also summarized in Mr. McCrea’s NI43-101 report as follows: ‘three metallurgical samples from the Maria Norte veins that had been previously worked by Buenaventura were sent to Procesmin Ingenieros S.R.L. in Caraz, Ancash. The primary objective of the test work was to collect 2 samples to perform metallurgical testing of the mineralization present in the veins that were worked by Buenaventura and a sample also for preliminary metallurgical testing of a vein located in the Plata 33 concession, where another vein with previous exploitation works was sampled. All samples were sent to a laboratory in Caraz was to determine the samples response to concentration by froth flotation.‘

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.

About Rio Silver Inc.

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.
Learn more at www.riosilverinc.com

ON BEHALF OF THE BOARD OF DIRECTORS OF Rio Silver INC.

Chris Verrico
Director, President and Chief Executive Officer

To learn more or engage directly with the Company, please contact:

Christopher Verrico, President and CEO
Tel: (604) 762-4448
Email: chris.verrico@riosilverinc.com
Website: www.riosilverinc.com

Cautionary Note Regarding Forward-Looking Information

This news release contains ‘forward-looking statements’ within the meaning of applicable Canadian securities laws. All statements in this release that are not historical facts are forward-looking statements and are based on expectations and assumptions as of the date of this release. Forward-looking statements relate to future events or performance and include, but are not limited to, statements regarding the Company’s planned exploration and development activities at the Maria Norte Project, expected timelines for regulatory approvals, future work programs, engagement with local stakeholders, geological interpretations, and the Company’s ability to advance its assets toward potential development.

Forward-looking statements involve known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied. These risks include, but are not limited to, operational risks, regulatory risks, geological uncertainties, availability of financing, community and social risks, commodity-price fluctuations, and general economic conditions. Additional risks are described in the Company’s filings available on SEDAR+ at www.sedarplus.ca .

Readers are cautioned not to place undue reliance on forward-looking statements. Rio Silver does not undertake to update forward-looking statements except as required by applicable law.

Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release.

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/81e6ed33-b450-4103-8977-152584fad1db

Homerun Resources Inc. (TSXV: HMR,OTC:HMRFF) (OTCQB: HMRFF) (‘Homerun’ or the ‘Company’) is pleased to announce that further to the Company’s News Release on September 12, 2025, it has closed the acquisition with Pedreiras do Brasil S.A. (‘Pedreiras’) a company controlled by Vitoria Stone, securing the rights to exploit the Pedreiras mining tenement at the Santa Maria Eterna Silica Sand District in the municipality of Belmonte, Bahia, Brazil, granted under a lease agreement with Companhia Bahiana de Pesquisa Mineral (CBPM). This is the third and final CBPM lease acquisition by Homerun marking another significant step in the continuing strategic plan to consolidate control over the Santa Maria Eterna Silica Sand District.

The newly acquired Pedreiras tenement is fully permitted with a low royalty rate of R$ 30.17 per extracted tonne.

The acquisition value is settled by the issuance of US$1,200,000 in Homerun common shares and US$200,000 in share purchase warrants, as per the following:

Issuance of Common Shares: the US$ 1,200,000 acquisition price is being paid through the issuance of common shares of the Company, valued at CA$1.00 per share. For conversion purposes, the exchange rate of the US dollar (USD) to the Canadian dollar (CAD) is fixed at 1 USD = 1.38 CAD to set the number of shares at 1,656,000.

Issuance of Warrants: Without prejudice to the payment provided above and as an additional component, US$ 200,000 in warrants, exercisable into Homerun common shares for a period of one year at CA$1.00 per share. For conversion purposes, the same exchange rate of 1 USD = 1.38 CAD, will be used to set the number of warrants at 276,000.

The issuance of the Homerun common shares and warrants was subject to the approval of the TSX Venture Exchange. The Homerun securities issued under the terms of this agreement are now subject to a standard 4-Month statutory hold period. Pedreiras agrees to contact Homerun regarding the sale of any Homerun common shares and also agrees to limit the sale of the Homerun common shares in any given month to 100,000.

About Homerun (www.homerunresources.com / www.homerunenergy.com)

Homerun Resources Inc. (TSXV: HMR,OTC:HMRFF) is building the silica-powered backbone of the energy transition across four focused verticals: Silica, Solar, Energy Storage, and Energy Solutions. Anchored by a unique high-purity low-iron silica resource in Bahia, Brazil, Homerun transforms raw silica into essential products and technologies that accelerate clean power adoption and deliver durable shareholder value.

• ⁠Silica: Secure supply and processing of high-purity low-iron silica for mission-critical applications, enabling premium solar glass and advanced energy materials.
• Solar: Development of Latin America’s first dedicated 1,000 tonne per day high-efficiency solar glass plant and the commercialization of antimony-free solar glass designed for next-generation photovoltaic performance.
• Energy Storage: Advancement of long-duration, silica-based thermal storage systems and related technologies to decarbonize industrial heat and unlock grid flexibility.
• ⁠Energy Solutions: AI-enabled energy management, control systems, and turnkey electrification solutions that reduce costs and optimize renewable generation for commercial and industrial customers.

With disciplined execution, strategic partnerships, and an unwavering commitment to best-in-class ESG practices, Homerun is focused on converting milestones into markets-creating a scalable, vertically integrated platform for clean energy manufacturing in the Americas.

FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE

The information contained herein contains ‘forward-looking statements’ within the meaning of applicable securities legislation. Forward-looking statements relate to information that is based on assumptions of management, forecasts of future results, and estimates of amounts not yet determinable. Any statements that express predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance are not statements of historical fact and may be ‘forward-looking statements’.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/279591

(TheNewswire)

‘The LiDAR survey was highly successful in confirming the 1,600 metre known strike length of the Dos de Mayo vein system and, perhaps more importantly, has identified new structures, often with artisanal workings that may indicate the presence of vein material,’ stated Robert Archer, Pinnacle’s President & CEO.  ‘The sheer number of historic shafts, adits and pits interpreted from the LiDAR survey underscores the prospectivity of the project and, to date, we have focused only on the northernmost 10% of the property.  As such, we are adding to our geological team to follow up on these new targets.’

Click Image To View Full Size

Figure 1:  El Potrero Project Showing Two Claim Blocks and Artisanal Workings Interpreted from LiDAR

Click Image To View Full Size

Figure 2:  El Potrero Block Showing Artisanal Workings Interpreted from LiDAR Defining Main Dos de Mayo Trend and New Target Areas

On the northern, or ‘El Potrero’, claim block (Figure 2), the majority of the 3 shafts, 50 adits and 29 pits clearly outline the known trace of the Dos de Mayo vein system and the more limited exposures of the El Capulin and La Estrella veins.  However, the LiDAR also indicates the potential for an extension to this system to the southeast, across the river valley, where it would be hosted in similar andesitic rocks.  In addition, there appears to be a previously unknown northeast-southwest trend on the southeast side of the valley, also in andesites, while similar northeast-southwest trends are observed in the southwest section, presumably hosted by intrusive rocks according to government regional geology maps.  This latter scenario could give rise to a different, intrusive-related, style of mineralization.  Regionally, northeast-trending structures pre-date the northwesterly trend and are host to the Ag-Pb-Zn-Au veins of the Topia Mine, 13 kilometres to the southwest.

On the separate Maria Fernanda 2 (‘MF2′) claim block to the southwest (Figure 3), 3 shafts, 14 adits and 22 pits are somewhat scattered across the concession.  While this area has never been explored by modern methods, government maps indicate a northwest-southeast trending structure passing through the middle of the block, parallel to the Dos de Mayo system and to the regional structural trend.  The LiDAR also indicates a number of smaller structures perpendicular to this trend.  The road from Topia passes through the middle of the block and road cuts locally display intense argillic alteration and pervasive chloritization with minor pyrite that, collectively, may be indicative of a buried hydrothermal system.  Several of the pits interpreted from the LiDAR appear to lie in close proximity to this zone. Pinnacle’s geological team is planning a systematic and thorough evaluation of the area, commencing early in the New Year.  

Click Image To View Full Size

Figure 3:  MF2 Block Showing Artisanal Workings Interpreted from LiDAR, Structure and Alteration

The LiDAR survey covered the entire 11 km2 property and was flown by Eagle Mapping Ltd. of Langley, British Columbia.  Reprocessing and interpretation of the data was conducted by GeoCloud Analytics of Melbourne, Australia.

LiDAR, or Light Detection and Ranging, is a remote sensing technology that uses laser light to ‘see through’ vegetation and soil cover to measure distances, with 15-30 cm scale accuracy, to underlying rock surfaces.  In this way, it can map out features such as structures and lithological contacts that can be related to mineralization but may not be exposed at surface.  The survey also included colour aerial photography with 10-15 cm resolution that will assist in surface exploration and planning of infrastructure upgrades.

Qualified Person

Mr. Jorge Ortega, P. Geo, a Qualified Person as defined by National Instrument 43-101, and the author of the NI 43-101 Technical Report for the Potrero Project, has reviewed, verified and approved for disclosure the technical information contained in this news release.

About the Potrero Property

El Potrero is located in the prolific Sierra Madre Occidental of western Mexico and lies within 35 kilometres of four operating mines, including the 4,000 tonnes per day (tpd) Ciénega Mine (Fresnillo), the 1,000 tpd Tahuehueto Mine (Luca Mining) and the 250 tpd Topia Mine (Guanajuato Silver).

High-grade gold-silver mineralization occurs in a low sulphidation epithermal breccia vein system hosted within andesites of the Lower Volcanic Series and has three historic mines along a 500 metre strike length.  The property has been in private hands for almost 40 years and has never been systematically explored by modern methods, leaving significant exploration potential.

A previously operational 100 tpd plant on site can be refurbished / rebuilt and historic underground mine workings rehabilitated at relatively low cost in order to achieve near-term production once permits are in place. The property is road accessible with a power line within three kilometres.  

Pinnacle will earn an initial 50% interest immediately upon commencing production.  The goal would then be to generate sufficient cash flow with which to further develop the project and increase the Company’s ownership to 100% subject to a 2% NSR.  If successful, this approach would be less dilutive for shareholders than relying on the equity markets to finance the growth of the Company.

About Pinnacle Silver and Gold Corp.

Pinnacle is focused on the development of precious metals projects in the Americas.  The high-grade Potrero gold-silver project in Mexico’s Sierra Madre Belt hosts an underexplored low-sulphidation epithermal vein system and provides the potential for near-term production. In the prolific Red Lake District of northwestern Ontario, the Company owns a 100% interest in the past-producing, high-grade Argosy Gold Mine and the adjacent North Birch Project with an eight-kilometre-long target horizon.  With a seasoned, highly successful management team and quality projects, Pinnacle Silver and Gold is committed to building long-term, sustainable value for shareholders.

Signed: ‘Robert A. Archer’

President & CEO

For further information contact:

Email:        info@pinnaclesilverandgold.com

Tel.:  +1 (877) 271-5886 ext. 110

Website: www.pinnaclesilverandgold.com

Neither the TSX Venture Exchange nor the Investment Industry Regulatory Organization of Canada accepts responsibility for the adequacy or accuracy of this release.

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