Tier One Silver Announces Upsize of Previously Announced Private Placement

Vancouver, British Columbia--(Newsfile Corp. - September 8, 2025) - Tier One Silver Inc. (TSXV: TSLV) (OTCQB: TSLVF) ("Tier One" or the "Company") is pleased to announce that it is increasing the size of the non-brokered private placement, the terms of which were announced on September 3, 2025, (the "Offering") due to increased investor demand. The Company now intends to sell up to 81,250,000 units for gross proceeds of up to $6,500,000 which is expected to close in two tranches on September 11, 2025, and September 16, 2025, subject to TSX Venture Exchange approval. All other terms of the Offering remain unchanged.

About Tier One Silver

Tier One Silver is an exploration company focused on creating value for shareholders and stakeholders through the discovery of world-class silver, gold and copper deposits in South America. The Company is focused on its flagship exploration project, Curibaya, but continues to investigate other potential projects of merit. The Company's management and technical teams have a strong track record in raising capital, discovery and monetization of exploration success.

ON BEHALF OF THE BOARD OF DIRECTORS OF TIER ONE SILVER INC.

Peter Dembicki President, CEO and Director

For further information on Tier One Silver Inc., please contact the Company at (778) 729-0700 or visit the Company's website: www.tieronesilver.com

Forward-Looking Information and General Cautionary Language

This news release contains forward-looking statements and forward-looking information within the meaning of Canadian securities legislation (collectively, "forward-looking statements") that relate to the Company's current expectations and views of future events in connection with the planned financing. Forward-looking statements are not historical facts and therefore may involve estimates, assumptions and uncertainties which could cause actual results or outcomes to differ materially from those expressed in such forward-looking statements. No assurance can be given that these expectations will prove to be correct and such forward-looking statements included in this news release should not be heavily relied upon. These statements speak only as of the date of this news release. In particular, and without limitation, this news release contains forward-looking statements in regard to the size and closing of the Offering.

Readers should refer to the risks discussed in the Company's Annual Information Form and Management's Discussion & Analysis for the year ended December 31, 2023, and subsequent continuous disclosure filings with the Canadian Securities Administrators available at www.sedarplus.ca.

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

This news release is not for distribution to U.S. newswire services for dissemination
in the United States

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/265593