Star Metro - Rio Grande Resources Provides 2025 Fall Exploration Update for its Winston Gold and Silver Properties and Engages Dahrouge Geological Consulting

"We are excited to formally engage Dahrouge Geological Consulting to lead the next phase of systematic exploration at Winston," said Jason Barnard, President and CEO of Rio Grande Resources. "Their methodical approach, which begins with validating historical data and culminates in a targeted drill program, aligns perfectly with our strategy to unlock the significant potential of this past-producing gold and silver property. The upcoming site visit and sampling program are critical first steps in refining our geological model and defining drill targets. We look forward to providing further updates as this work progresses."

Barnard added, "We are also pleased to have recently appointed Harpreet Bajaj to the role of Corporate Secretary. With her extensive background in TSX Venture compliance and corporate governance, she will be an invaluable asset as we advance our corporate and exploration objectives."

The Winston Project is a drill-ready, ~3,000-acre property located in located in the prolific Chloride Mining District of Sierra County, New Mexico. It's home to three historic mines; The 2 patented Ivanhoe, Emporia, and the 4 Little Granite claims, which make up part of the 147 unpatented Bureau of Land Management ("BLM") mining claims. Each mine produced high-grade gold and silver during full-time operations over a century ago. The property hosts high-grade, low-sulphidation epithermal gold-silver veins, situated within a prolific structural trend that also possesses the key geological ingredients for Carbonate Replacement Deposit ("CRD") formation. This dual-model potential significantly elevates the project's prospectivity, offering not only near-term, high-grade vein targets but also the potential for a larger, district-scale CRD system.

The Dahrouge technical team will conduct a detailed comprehensive program starting next month including a site visit, a field assessment, geological mapping and channel sampling of exposed mineralized veins. The data collected, combined with a compilation and review of all existing project data, will be used to build a 3D geologic model. The primary objective of this work is to delineate high-priority targets for a planned drill program designed to test the interpreted high-grade vein structures.

Rio Grande is committed to systematically advancing the Winston Project and will update shareholders as new data is received, compiled, and interpreted from the upcoming field activities.

Corporate Secretary Appointment
Rio Grande is also pleased to announce the appointment of Harpreet Bajaj as its corporate secretary. Ms. Bajaj is a finance and compliance professional with over 17 years of experience in investment banking, regulatory compliance, and corporate governance. Her career includes key roles at numerous publicly listed companies and as a member of a multinational bank's due diligence division. Her expertise includes regulatory frameworks, risk management, and corporate secretarial services for both public and private companies. Known for her strategic insight and attention to detail, Harpreet brings valuable knowledge and a commitment to operational excellence.

Equity Grant
The Company has granted 30,000 stock options exercisable at $ 0.42 for a period of 3-years and 25,000 RSUs subject to vesting provisions to certain employees and consultants. All stock options and RSUs issued are subject to a statutory hold period of four months and one day and have been granted in accordance with the Company's Omnibus Stock Incentive Plan dated December 20, 2024, and the policies of the Canadian Securities Exchange.

About Rio Grande Resources
Rio Grande Resources (CSE:RGR)(OTCQB:RGRLF) is a burgeoning mineral exploration company focused on unlocking the high-grade gold and silver potential within its 3,000-acre drill-ready property in the Black Range of Sierra County, New Mexico. The company holds 100% interest in the Winston project group, which includes the 2 patented historic Ivanhoe & Emporia Claims, and Little Granite mines, all known for their past production of high-grade precious metals. Rio Grande Resources is led by a team of experienced professionals with expertise in mineral exploration and development, who are targeting large-scale precious metal discoveries within the property's well-documented low-sulfidation epithermal setting.

To view the company fact sheet and corporate presentation, please visit our website at www.riogranderesources.ca

Contact and Information

Company
Jason Barnard, President CEO and Director
(604) 767-6598
[email protected]

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Forward-Looking Statements
Except for the statements of historical fact contained herein, the information presented in this news release and oral statements made from time to time by representatives of the Company are or may constitute "forward-looking statements" as such term is used in applicable United States and Canadian laws and including, without limitation, within the meaning of the Private Securities Litigation Reform Act of 1995, for which the Company claims the protection of the safe harbor for forward-looking statements. Such forward-looking statements and forward-looking information include, but are not limited to, the proposed benefits of the Arrangement. These statements relate to analyses and other information that are based on forecasts of future results, estimates of amounts not yet determinable and assumptions of management. Any other statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always, using words or phrases such as "expects" or "does not expect," "is expected," "anticipates" or "does not anticipate," "plans," "estimates" or "intends," or stating that certain actions, events or results "may," "could," "would," "might" or "will" be taken, occur or be achieved) are not statements of historical fact and should be viewed as forward-looking statements. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such risks and other factors include, among others, the availability of capital to fund programs and the resulting dilution caused by the raising of capital through the sale of shares, continuity of agreements with third parties, the satisfaction of the conditions to the Arrangement, risks and uncertainties associated with the environment and delays in obtaining governmental approvals, permits or financing. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate as actual results and future events could differ materially from those anticipated in such statements. Although the Company believes that the expectations reflected in such forward-looking statements are based upon reasonable assumptions, it can give no assurance that its expectations will be achieved. Forward-looking information is subject to certain risks, trends and uncertainties that could cause actual results to differ materially from those projected. Many of these factors are beyond the Company's ability to control or predict. Important factors that may cause actual results to differ materially and that could impact the Company and the statements contained in this news release can be found in the Company's filings on SEDAR+. The Company assumes no obligation to update or supplement any forward-looking statements whether as a result of new information, future events or otherwise. Accordingly, readers should not place undue reliance on forward-looking statements contained in this news release and in any document referred to in this news release. This news release shall not constitute an offer to sell or the solicitation of an offer to buy securities. Please refer to the Company's most recent filings under its profile on SEDAR+ at www.sedarplus.ca for further information respecting the risks affecting the Company and its business.

The CSE has neither approved nor disapproved the contents of this news release and accepts no responsibility for the adequacy or accuracy hereof.

SOURCE: Rio Grande Resources

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P.M.Martin--SMC