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RGR.CN ·

Rio Grande Announces Listing on the Frankfurt Stock Exchange

Listings & Exchange

Rio Grande Announces Listing on the Frankfurt Stock Exchange

VANCOUVER, British Columbia, July 16, 202 5 – Rio Grande Resources Ltd. (CSE:RGR)

(OTCQB:RGRLF) (FSE: 488) (“Rio Grande” or “RIO” the “Company”), an emerging North American

gold and silver exploration company, today announced that its common shares have received

approval to be cross traded on the Frankfurt Stock Exchange (“FSE”) in Germany under the symbol

FSE:488, and commenced trading on July 7, 2025.

The Company’s shares will continue to trade on the Canadian Securities Exchange (“CSE”) under the

symbol “RGR” and the OTCQB Venture Market under the symbol “RGRLF” .

The cross listing on FSE will enable greater access to European investors and increase Rio Grande’s

global visibility. The FSE is the largest of the seven stock exchanges in Germany and one of the largest

and most efficient trading venues in the world, offering high liquidity and access to a broad range of

international investors. Germany is Europe’s largest economy with a strong base of institutional

investors and a growing retail investor community.

Jason Barnard, President and Chief Executive Officer of Rio Grande, comments : “The approval to

cross trade on the FSE provides the opportunity to enhance our trading volume and liquidity on a

major international exchange. It will also serve to improve our visibility in the European market and

tap into a new pool of institutional and retail investors. We look forward to engaging a wider investor

base as we advance the development of our Winston Property project and build long-term value for

our shareholders. "

Investors can find real-time quotes and market information for the Company on the FSE website at:

https://www.boerse-frankfurt.de/equity/rio-grande-resources-ltd?mic=XFRA

Equity Grant

Further, the Company announces that it has granted an aggregate 1,200,000 stock options to the

directors, officers and consultants of the Company, exercisable at $.35 and for a period of 2-years.

All stock options 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 Long -Term Incentive Plan dated

December 20, 2024 and the policies of the CSE.

About Rio Grande Resources

Rio Grande Resources (CSE:RGR) (OTCQB:RGRLF) (FSE:488) 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 o f 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]

Investor Relations

Lucas A. Zimmerman & Ian Scargill

MZ Group - MZ North America

(262) 357-2918

[email protected]

www.mzgroup.us

Follow us or contact us on social media:

X: @RioGrandeRGR | LinkedIn | Facebook

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 us ed 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. S uch forward -looking statements and forward -looking information

include, but are not limited to, the Company's expectations with respect to the Private Placement;

and the use of proceeds under the Private Placement;. 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, pr ojections, 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 un known 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 stateme nts. 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 Units, continuity of agreements with third parties, risks and uncertaintie s

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 desc ribed 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 diffe r 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 new s 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 un due 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 C ompany'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.