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Lithium Chile Shareholders Vote 96% IN Favor of Proposed Sale of Company’S Arizaro Project IN Salta, Argentina

Mergers & Acquisitions Shareholder Meetings

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LITHIUM CHILE SHAREHOLDERS VOTE 96% IN FAVOR OF PROPOSED SALE

OF COMPANY’S ARIZARO PROJECT IN SALTA, ARGENTINA

TSX Venture Exchange: LITH For Immediate Release

OTC-QB: LTMCF

CALGARY, ALBERTA, May 19, 2026 - Lithium Chile Inc . (“Lithium Chile” or the “ Company”) is

pleased to announce that all matters presented to the Shareholders at the Company’s Annual

General and Special Meeting held on May 15, 2026, were approved.

Shareholders voted in favour of:

• The proposed sale of its Arizaro project through the disposition of its Argentinian

subsidiary, Argentum Lithium S.A. for US $175,000,000, (“the Transaction”).

• The election of all nominated directors;

• The appointment of MNP LLP as auditors of the Company for the ensuing year;

• Approval of the Company’s stock option plan; and

• All other matters properly brought before the meeting.

Steven Cochrane President and CEO of Lithium Chile comments, “The Shareholders

overwhelming support of the proposed sale of our Arizaro project brings us one step closer to

completing the Transaction. We continue to finalize all outstanding closing requirements and

look forward to a successful conclusion to the pending Transaction”.

Lithium Chile would also like to extend its sincere gratitude to outgoing Director Ken Booth, who

did not stand for re-election. Mr. Booth’s nine years of dedicated service, support and guidance

have been invaluable to the Company and will be greatly missed. Lithium Chile is pleased,

however, that he will continue to contribute his experience and insight to the Company in a

consulting capacity going forward.

Lithium Chile would like to thank its Shareholders for their continued support and confidence in

the Company. Updates, including the next steps related to the Transaction will be provided in

the upcoming weeks as they become available.

ON BEHALF OF THE BOARD

Lithium Chile Inc.

Steven Cochrane

President & Chief Executive Officer

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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: 587-393-1990.

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:

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

within the meaning of applicable securities legislation (collectively, “forward -looking statements”).

Forward-looking statements are frequently identified by w ords such as “expects”, “anticipates”,

“believes”, “intends”, “plans”, “will”, “may” and similar expressions.

Forward-looking statements in this news release include, but are not limited to, statements regarding:

the completion and timing of the proposed sale of the Company’s Arizaro project through the disposition

of Argentum Lithium S.A. (the “Transaction”); the satisfaction or waiver of the remaining closing

conditions; the receipt of all required regulatory and stock exchange approvals, including acceptance of

the TSX Venture Exchange; and the Company’s intention to provide further updates and advance the

Transaction toward closing.

These forward-looking statements are based on assumptions and factors that management believes are

reasonable as of the date of this news release, including assumptions regarding the ability of the parties

to satisfy closing conditions, obtain necessary approvals, and complete the Transaction on the anticipated

timeline.

Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that

may cause actual results or events to differ materially from those expressed or implied by such

statements. Such risks and uncertainties include, among others: the possibility that the Transaction may

not be completed on the terms currently contemplated or at all; the risk that required approvals may not

be obtained in a timely manner or at all; changes in market, economic, regulatory or political conditi ons;

and other risks generally associated with the mineral exploration and development industry.

Readers are cautioned not to place undue reliance on forward -looking statements. The forward -looking

statements contained in this news release are made as of the date hereof, and Lithium Chile undertakes

no obligation to update or revise any forward -looking statements, except as required by applicable

securities laws.