Mr. Mark Ayranto reports

SILVERCO MINING ENGAGES SGS TO VALIDATE AND UPDATE MINERAL RESOURCE ESTIMATE AT THE CUSI PROPERTY

Silverco Mining Ltd. has engaged SGS Canada Inc. to complete an independent validation and update of the 2020 historical mineral resource estimate (MRE) for its 100-per-cent-owned Cusi property, located approximately 90 kilometres (km) northwest of First Majestic's Los Gatos mine in Chihuahua state, Mexico. The updated resource will be prepared in accordance with National Instrument 43-101, Standards of Disclosure for Mineral Projects.

The updated MRE will incorporate new data and expand the scope of the previous historical estimate by:

• Independently validating the historical resource data for the Cusi property;
• Integrating up to 11,500 metres (m) of Silverco drilling, including approximately 6,000 metres from the continuing 2025 drill program and 5,500 metres from the completed 2024 drill program;
• Including a new resource area for the San Miguel vein system, which was consolidated by the company with the acquisition of the inset claims. San Miguel was not part of the 2020 historical resource and will be modelled for the first time in the updated MRE. The 2024 program demonstrated significant, open-ended resource potential at San Miguel, including an intercept of 7.5 metres grading 364 grams per tonne (g/t) silver equivalent (AgEq) in hole CU-24-08. This was further validated in 2025 drilling, with 8.6 metres grading 250 g/t AgEq in hole CU-25-29;
• Accounting for mining depletion that has occurred since the effective date of the previous 2020 historical estimate, which is estimated to be approximately 900,000 tonnes;
• Tightening the definition of the inferred resource material by using a smaller search radius during estimation, meaning less projection of potential mineralization into undrilled areas, which derisks and improves the overall quality of the resource model;
• Updating reporting cut-off grades for new metal prices and inflation adjusted cost estimates.

SGS has recently completed several MREs at neighbouring properties, including Vizsla Silver's Panuco project, Endeavour Silver's Pitarrilla project, and Kootenay Silver's Columba and La Cigarra projects.

The updated MRE is expected later this quarter. Once completed, the company anticipates meeting the requirements to apply for Tier 1 issuer status on the exchange.

Additionally, the company has engaged Triomphe Holdings Ltd., doing business as Capital Analytica, an arm's-length service provider, to provide certain marketing and social media services to the company, in accordance with the policies of the TSX Venture Exchange and applicable securities laws. Based in Nanaimo, B.C., Capital Analytica specializes in marketing, social media and public awareness within the mining and metals sector. Under a consulting services agreement dated Nov. 14, 2025, Capital Analytica will provide social media services, capital markets consultation and social engagement reporting for an initial six-month term for a fee of $150,000, payable in two tranches. The engagement remains subject to the approval of TSX Venture Exchange.

Capital Analytica has no direct or indirect interest in the company or its securities, and has no current intention or right to acquire any such interest during the engagement, other than the potential grant of stock options in the future.

Technical disclosure

The scientific and technical information contained in this news release has been reviewed and approved by Nico Harvey, PEng, vice-president, project development, of Silverco, a qualified person as defined in National Instrument 43-101. Mr. Harvey is not independent of the company. Mr. Harvey has reviewed the sampling, analytical and QA/QC (quality assurance/quality control) data underlying the technical information disclosed herein.

No production decision has been made at Cusi. Any decision to restart operations will follow completion of the requisite technical, financial and permitting milestones.

About Silverco Mining Ltd.

The company owns a 100-per-cent interest in the 11,665-hectare Cusi project, located in Chihuahua state, Mexico. It lies within the prolific Sierra Madre Occidental gold-silver belt. There is an existing 1,200-ton-per-day mill with tailings capacity at the Cusi property.

The Cusi property is a past-producing underground silver-lead-zinc-gold project approximately 135 kilometres west of Chihuahua. The Cusi property boasts excellent infrastructure, including paved highway access and connection to the national power grid.

The Cusi property hosts multiple historical silver-gold-lead-zinc-producing (Ag-Au-Pb-Zn) mines, each developed along multiple vein structures. The Cusi property hosts several significant exploration targets, including the extension of a newly identified downthrown mineralized geological block and additional potential through claim consolidation.

We seek Safe Harbor.