VANCOUVER, BC / ACCESS Newswire / August 18, 2026 / NiobiumX Mining Inc. (CSE:NIOX)(OTCQB:NIOXF)(FSE:O7D0) (“NiobiumX” or the “Company“) is pleased to confirm, further to its news release dated July 29, 2026, that its common shares now trade under updated ticker symbols across all three of its listed markets, completing the Company’s market transition to NiobiumX Mining Inc.

Key Highlights

  • Unified Identity Across Three Markets: NiobiumX now trades under a single, consistent brand in Canada, the United States and Europe.

  • Canada: Common shares trade on the Canadian Securities Exchange under “NIOX”, effective as of market open on July 17, 2026.

  • United States: The Company’s OTCQB Venture Market symbol has been updated to “NIOXF” (formerly “AFXLF”).

  • Europe: The Company’s Frankfurt Stock Exchange symbol has been updated to “O7D0” (formerly “O5K”).

A Single Identity for the Shipshaw Story

The updated symbols align the Company’s market identity with its strategic focus on its flagship Shipshaw Property, a 48-claim, approximately 2,686-hectare niobium and rare earth element property in the Saint-Honoré carbonatite district of Quebec’s Saguenay region. The Property’s nearest claim boundary lies less than two kilometres from the producing Niobec mine, North America’s only operating niobium producer1, and the Shipshaw carbonatite is one of only five niobium-rare earth carbonatite systems characterized by Géologie Québec in metallogenic bulletin BM 2024-022. The Property does not host a mineral resource or mineral reserve estimate. The Company will provide a detailed overview of the Property and its planned exploration program in forthcoming news releases.

“One name, one story, one set of symbols. Investors in Canada, the United States and Europe can now find NiobiumX under a consistent identity across every market we trade on, as we turn our full attention to advancing Shipshaw,” said Kirby Renton, President, Chief Executive Officer and Director of the Company.

Qualified Person

The scientific and technical information in this news release has been reviewed and approved by Babak V. Azar, M.Sc., P.Geo. (OGQ #10876), a Qualified Person as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mr. Azar is independent of the Company.

This news release contains information concerning neighbouring properties in which the Company has no interest. Such information was obtained from public disclosure by the owners or operators of those properties. The Company’s Qualified Person has not verified that information, and readers are cautioned that mineralization on a neighbouring property is not necessarily indicative of mineralization on the Company’s property.

About NiobiumX Mining Inc.

NiobiumX Mining Inc. (CSE:NIOX)(OTCQB:NIOXF)(FSE:O7D0) is a Canadian mineral exploration company focused on niobium and rare earth elements. The Company’s principal asset is the Shipshaw Property, a package of 48 mineral claims totalling approximately 2,686 hectares in the Saguenay region of Quebec, situated within the Saguenay Graben of the Grenville Geological Province and characterized by a swarm of carbonatite and lamprophyre dykes. The Shipshaw carbonatite is one of five niobium-rare earth carbonatite systems characterized by Géologie Québec in metallogenic bulletin BM 2024-022. Niobium is designated a critical mineral by Canada, the United States, the European Union and Australia.

For Further Information

Kirby Renton, President, Chief Executive Officer and Director

Telephone: (604) 689-2646 | Email: contact@niobiumx.com | Website: niobiumx.com

On behalf of the Board of Directors, Kirby Renton, President and Chief Executive Officer, NiobiumX Mining Inc.

Notes

1. Magris Performance Materials, Niobec operations overview: “Niobec has been in production since 1976. It is one of only three global producers of niobium, and the only producer located outside of Brazil.” Available at www.magrispm.com/niobec.

2. Legros, H., Beauchamp, A.-M. and Moukhsil, A., 2024. Caractérisation des carbonatites à Nb-ETR de la zone Waswanipi-Saguenay, Province de Grenville, Québec, Canada. Ministère des Ressources naturelles et des Forêts, BM 2024-02.

Forward-Looking Information

Except for statements of historic fact this news release contains certain “forward-looking information” within the meaning of applicable securities law. Forward-looking information in this news release includes, without limitation, statements regarding the trading of the Company’s common shares under the updated symbols, the Company’s exploration plans and programs, the prospectivity of the Shipshaw Property for niobium and rare earth elements, and the content and timing of forthcoming news releases. Forward-looking information is based on assumptions management considers reasonable as of the date hereof and is subject to known and unknown risks and uncertainties that may cause actual results to differ materially, including that geophysical or model-derived anomalies may not reflect mineralization; that no mineral resource estimate exists for the Property and none may ever be established; that the Company may be unable to obtain financing, permits or title on acceptable terms; and changes in commodity prices, demand and critical minerals policy. Readers are cautioned not to place undue reliance on forward-looking information. The Company undertakes no obligation to update forward-looking information except as required by law. Additional information on risks is available in the Company’s filings at www.sedarplus.ca.

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

SOURCE: NiobiumX Mining Inc.

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