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Rio Silver Announces Correction to Stock Option Grants

VANCOUVER, British Columbia, June 03, 2026 (GLOBE NEWSWIRE) — Rio Silver Inc. (“Rio Silver” or the “Company”) (TSX.V: RYO) (OTC: RYOOF) Further to the Company’s previous announcement on June 1, 2026 granting an aggregate of 1.15 million incentive stock options of the Company to certain directors and officers, the Company would like to correct a typographical error with respect to the exercise price of these options. The Company would like to clarify and confirm that the correct exercise price for these options should have referred to $0.35 per share. There are no other changes to these options including the date of grant and the exercise period. The grant of the stock options remains subject to the approval of the TSX Venture Exchange.

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

Stay Connected with Rio Silver
Investors and stakeholders are encouraged to follow Rio Silver for the latest company updates, project milestones, and event announcements across the Company’s official social media channels:

By following Rio Silver’s official channels, investors can stay informed as the Company advances its silver-dominant projects and executes on key development milestones.


ON BEHALF 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 certain “forward-looking statements” and “forward-looking information” within the meaning of applicable Canadian securities laws (collectively, “forward-looking statements”). Forward-looking statements include, but are not limited to, statements regarding anticipated development activities, underground access timing, permitting progress, community engagement, metallurgical testing and processing strategies, planned exploration and technical programs, the Company’s staged development approach, and the Company’s ability to advance the Maria Norte Project toward potential production, cash flow, or other operational milestones.

Forward-looking statements are based on a number of assumptions that management believes to be reasonable at the time such statements are made, including assumptions regarding continued community cooperation, the receipt of required permits and approvals, favorable market conditions, the availability of financing, the results of metallurgical and technical studies, and the Company’s ability to execute its development plans as currently contemplated. However, forward-looking statements are subject to a variety of known and unknown risks, uncertainties, and other factors that could cause actual results, performance, or achievements of the Company to differ materially from those expressed or implied by such statements.

Such risks and uncertainties include, without limitation, risks related to exploration and development activities, permitting and regulatory approvals, community relations, changes in commodity prices, availability of capital and financing, operational and technical challenges, environmental and social risks, and other risks described in the Company’s public disclosure documents filed under the Company’s profile on SEDAR+.

Readers are cautioned not to place undue reliance on forward-looking statements. Forward-looking statements in this news release are made as of the date hereof, and Rio Silver undertakes no obligation to update or revise any forward-looking statements except as required by applicable securities laws.

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

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