File: '\\swfile\EmailIn\20250923 060851 Attachment Tantalex Draft Press Release (clean OSC comments).docx'

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Tantalex Lithium Resources Corp.

1410-120, Adelaide St.W

Toronto, Ontario Canada

M5H 1T1

TANTALEX LITHIUM ANNOUNCES PARTIAL REVOCATION OF CEASE TRADE ORDER AND PROPOSED PRIVATE PLACEMENT

Toronto, Ontario, September 23, 2025 - Tantalex Lithium Resources Corp. (CSE: TTX, FSE: DW8 and OTCQB: TTLXF) ("Tantalex" or the "Company") announces that the Ontario Securities Commission ("OSC") has issued a partial revocation order on September 19, 2025 (the "Partial Revocation Order") partially revoking the failure-to-file cease trade order issued against the Company on July 7, 2025 (the "CTO") for failing to file certain outstanding continuous disclosure documents. The Partial Revocation Order permits the Company to complete a private placement transaction (the "Private Placement") for the purpose of filing continuous disclosure documents, paying accounting, auditing, transfer agent, corporate service providers and filing, fees, filing the application for a full revocation of the CTO, as well as to provide sufficient working capital to fund certain expenses until a full revocation of the CTO is obtained.

The Partial Revocation Order of the CTO was pursued in order to be able to complete the Private Placement of up to 232,860,667 common shares (each, a "Common Share") at a price of C$0.015 per Common Share to raise a total of up to C$3,492,910 (USD$2,531,224). The Private Placement will be conducted on a prospectus exempt basis with subscribers who satisfy the requirements of section 73.3 of the Securities Act (Ontario) or sections 2.3 (Accredited Investor) under National Instrument 45-106 Prospectus Exemptions ("NI 45-106"), as applicable.

Prior to completion of the Private Placement, each participant will receive a copy of the CTO and the Partial Revocation Order, and will be required to provide an acknowledgement to the Company that all of the Company's securities, including the Common Shares issued in connection with the Private Placement, will remain subject to the CTO until such order is fully revoked, and that the granting of the Partial Revocation Order does not guarantee the issuance of a full revocation order in the future. In addition, all Common Shares issued pursuant to the Private Placement will be subject to a hold period of four months and a day from the closing date of the Private Placement.

The Partial Revocation Order will terminate on the earlier of: (i) the completion of the Private Placement, and (ii) November 18, 2025, being 60 days from the date on which the Partial Revocation Order was issued. There can be no assurances that the Private Placement will be completed on the terms set out herein, or at all, or that the proceeds of the Private Placement will be sufficient for the purposes of the Company. The Company will also file a Material Change Report on SEDAR + upon completion of the Private Placement.

Certain insiders of the Company may acquire Common Shares pursuant to the Private Placement. Any participation by insiders in the Private Placement would constitute a "related party transaction" as defined under Multilateral Instrument 61-101 Protection of Minority Security Holders in Special Transactions ("MI 61-101"). However, the Company expects such participation would be exempt from the formal valuation and minority shareholder approval requirements contained in sections 5.5(a) and 5.7(1)(a) of MI 61-101 as neither the fair market value of the Common Shares subscribed for by the insiders, nor the consideration for the Common Shares paid by such insiders, would exceed 25% of the Company's market capitalization.

The securities being referred to in this news release have not been, nor will they be, registered under the United States (U.S.) Securities Act of 1933, as amended, and may not be offered or sold in the U.S. or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This news release does not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful.

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.

For more information, please contact: Richard Creitzman

Interim President & CEO Email: rc@tantalex.ca Phone: +41 79 968 5825

Website: www.tantalexlithium.com

Cautionary Note Regarding Forward Looking Statements

This press release may contain forward-looking statements including, but not limited to, comments regarding the timing, content, and use of proceeds of the Private Placement, and the Company's expectation to apply for a full revocation of the CTO. All statements in this press release, other than statements of historical facts, which address future production, reserve potential, exploration activities and events or developments that the Company 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 Company's properties to other mines, projects or metals; and (viii) the completion of the Private Placement and the full revocation of the CTO. Although the Company 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 Company 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.