Toronto, Ontario, August 20, 2025 – Tantalex Lithium Resources Corp. (CSE: TTX – FSE: DW8 – OTCQB: TTLXF) (“Tantalex” or the “Corporation”) would like to announce that Hadley Natus has communicated his resignation from his positions as a director and non-executive Chairman of the Corporation, effective August 19, 2025.

Moreover, Kyle Appleby has stepped down as the Chief Financial Officer, effective June 27, 2025.

The Corporation would like to thank Hadley and Kyle for their contributions to the Corporation, and we wish them the best of luck in their future endeavours.

The Corporation is currently searching for a suitable candidate to assume the role of Chief Financial Officer and a permanent Chief Executive Officer. The Board is working diligently to identify a qualified and capable individual who will lead the Corporation into its next phase of growth and development. Further announcements will be made as developments occur.

About Tantalex Lithium Resources Corporation

Tantalex Lithium is an exploration and development stage mining company engaged in the acquisition, exploration, development and distribution of lithium, tin, tantalum and other high-tech mineral properties in Africa.

It is currently focused on operating its TiTan tin and tantalum concentrate plant and developing its lithium assets in the prolific Manono area in the Democratic Republic of Congo; The Manono Lithium Tailings Project and the Pegmatite Corridor Exploration Program.

Cautionary Note Regarding Forward Looking Statements

This presentation includes certain statements that may be deemed forward looking statements. All statements in this document, other than statements of historical facts, which address future production, reserve potential, exploration activities and events or developments that the Corporation expects, are forward looking statements. Such forward-looking statements include, without limitation: (i) estimates of future lithium, tin and tantalum prices, supply, demand and/or production; (ii) estimates of future cash costs and revenues; (iii) estimates of future capital expenditures; (iv) estimates regarding timing of future development, construction, production or closure activities; (v) statements regarding future exploration results; (vi) statements regarding cost structure, project economics, or competitive position, (vii) statements comparing the Corporation properties to other mines, projects or metals; (viii) the ability to identify a permanent Chief Executive Officer, a Chief Financial Officer and future directors and officers. Although the Corporation believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward- looking statements. Factors that could cause actual results to differ materially from those in forward looking statements include market prices, exploitation and exploration successes, continued availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance, that the Corporation expressly disclaims any responsibility for revising or expanding the forward- looking statements to reflect actual results or developments, and that actual results or developments may differ materially from those projected, in the forward-looking statements, except as required by law.

Neither the Canadian Securities Exchange nor its regulations services provider have reviewed or accept responsibility for the adequacy or accuracy of this release.

For more information, please contact:
Richard Creitzman
Interim President & CEO
Email: rc@tantalex.ca
Phone: +41 79 968 5825
Website: www.tantalexlithium.com