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LITH.V ·

Lithium Chile Provides Update ON the Sale of Its Arizaro, Argentina Project

Mergers & Acquisitions

LITHIUM CHILE PROVIDES UPDATE ON THE

SALE OF ITS ARIZARO, ARGENTINA PROJECT

TSX Venture Exchange: LITH For Immediate Release

OTC-QB: LTMCF

CALGARY, ALBERTA, September 17, 2025 - Lithium Chile Inc. (“Lithium Chile” or the

“Company”) is pleased to provide an update regarding the proposed sale of its Arizaro Project

located in Salta Province, Argentina.

Due Diligence and Progress Toward Definitive Agreement

Following the signing of a binding letter of intent (the “LOI”) on December 16, 2024, the

Company and the Buyer have advanced steadily toward execution of a definitive agreement (the

“Definitive Agreement”).

Operational due diligence was completed in February 2025, followed by delivery of the first draft

of the Definitive Agreement to Lithium Chile. In June, internationally recognized advisors to the

Buyer completed the financial and legal due diligence. With this extensive review complete, legal

counsel for both parties began addressing the final terms of the Definitive Agreement.

The negotiations have focused on finalizing specific legal clauses and conditions precedent

required for closing. The process is well advanced, with only a few items remaining under

consideration. Legal teams from both groups continue to work diligently to complete the

agreement as expeditiously as possible. Lithium Chile and the Buyer have reaffirmed their

commitment to successfully concluding this transaction.

Special Committee Review

A committee comprised of independent directors (the “Special Committee”), established to

provide oversight of the proposed transaction, has been involved in continuous reviews of the

Definitive Agreement. The Special Committee approved submission of the draft agreement to

the TSX Venture Exchange (the “TSXV”) for regulatory comments and feedback. This milestone

represents an important advancement, bringing the Company and the Buyer closer to finalizing

the Definitive Agreement.

Steve Cochrane, President & CEO of Lithium Chile, commented, “The majority of the key

commercial terms have been agreed upon, and we are now progressing into the final stages of

the transaction. Before execution, the Buyer will submit the Definitive Agreement to its

regulatory body to obtain approval in accordance with its local requirements. With both the

Special Committee and the TSXV review processes underway, we are steadily advancing toward

signing this important agreement.”

This press release contains forward-looking statements concerning a proposed transaction.

While there is no guarantee that the agreement will be signed, both parties have expressed a

willingness and desire to see the transaction completed successfully. Investors should be

aware that the transaction is contingent upon completion of customary closing conditions, and

obtaining necessary governmental, regulatory, and shareholder approvals.

ABOUT LITHIUM CHILE

Lithium Chile Inc. is an exploration company with a portfolio of 11 properties spanning 106,136

hectares in Chile and 29,245 hectares on the Salar de Arizaro in Argentina. The Company has

successfully advanced its Arizaro project with the completion of NI 43-101 compliant Resource

Report, Preliminary Economic Assessment and Prefeasibility Study which are all accessible on

SedarPlus.ca under Lithium Chile’s profile.

Lithium Chile’s common shares are listed on the TSX-V under the symbol “LITH” and on the

OTCQB Under the symbol “LTMCF”.

To find out more about Lithium Chile, please contact:

Steven Cochrane, President and CEO via email: [email protected]

Or

Michelle DeCecco, COO via email: [email protected] or phone: 403-393-1990.

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.

FORWARD LOOKING STATEMENTS AND RISK FACTORS:

This news release may contain certain forward-looking information and forward-looking statements within

the meaning of applicable securities legislation (collectively "forward-looking statements"). Generally,

forward-looking statements can be identified using forward-looking terminology such as "expected",

"anticipated", "aims to", "plans to" or "intends to" or variations of such words and phrases or statements

that certain actions, events or results "will" occur. Such forward-looking statements are based on various

assumptions and factors that may prove to be incorrect, including, but not limited to, factors and

assumptions with respect to the general stability of the economic and political environment in which the

Company operates and the timely receipt of required regulatory approvals.

Closing of any sale contemplated by the Definitive Agreement remains subject to the completion of the

Definitive Agreement in a form satisfactory to the parties. While there is no guarantee that the Definitive

Agreement will be signed, both parties have expressed a willingness and desire to see the transaction

completed successfully. Closing of the sale contemplated by the Definitive Agreement also remains

subject to significant risks including obtaining necessary regulatory body approvals, including that of the

TSX Venture Exchange and shareholder approval.

Readers are cautioned that the foregoing risk factors are not exhaustive. Undue reliance should not be

placed on the forward-looking statements because Lithium Chile can give no assurance that they will prove

to be correct or that any of the events anticipated by forward-looking statements will transpire or occur, or

if any of them do, what benefits Lithium Chile will derive therefrom. Similarly, the risk factors listed above

are not exhaustive and other risk factors that have not been anticipated may become apparent as Lithium

Chile proceeds to closing. Lithium Chile does not undertake to update any forward-looking statements

herein, except as required by applicable securities laws. All forward-looking statements contained in this

news release are expressly qualified by this cautionary statement.