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NOA Lithium Provides Update on 2026 Exploration Drilling Program At Rio Grande Project

Exploration Programs

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NOA Lithium Provides Update on 2026 Exploration

Drilling Program At Rio Grande Project

June 11, 2026, Buenos Aires, Argentina – NOA Lithium Brines Inc. (TSXV:NOAL |

Frankfurt:N7N) (“NOA” or the “Company”) is pleased to provide an update on its 2026 exploration

drilling program at its flagship Rio Grande Project (the “Project”) in Salta Province, Argentina.

The Company reports that both drilling rigs are operating in accordance with the exploration program.

Well RT-RG26-PW001, which commenced first, has reached a depth of 1 68 metres, and Well RT-

RG26-PW002 has reached a depth of 30 metres (See the Figures below for images regarding these

drilling rigs and wells) . The Company expects to provide further updates on these wells as drilling

advances and results are compiled.

NOA’s Chief Executive Officer , Gabriel Rubacha states: “We are pleased with the progress of our

2026 drilling campaign at Rio Grande. With both rigs operating as planned, we are advancing key

field activities designed to further refine our hydrogeological understanding and support technical

workstreams toward the Project’s Preliminary Feasibility Study. We look forward to providing

additional updates as the program continues.”

The current drilling program is designed to support evaluation of deep brine -bearing aquifers and

ongoing refinement of the Project’s hydrogeological and resource models, as NOA advances the

Project toward more advanced technical and economic studies.

NEWS RELEASE

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Fig. 1 RT-RG26-PW002

Fig. 2 RT-RG26-PW001

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Fig. 3 RT-RG26-PW001

Fig. 4 RT-RG26-PW001 Samples

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About NOA Lithium Brines Inc.

NOA is a lithium exploration and development company formed to acquire assets with significant

resource potential. All NOA’s projects are located in the heart of the prolific Lithium Triangle, in the

mining-friendly province of Salta, Argentina, near a mul titude of projects and operations owned by

some of the largest players in the lithium industry. NOA has rapidly consolidated one of the largest

lithium brine claim portfolios in this region that is not owned by a producing company, with key

positions on three prospective salars, being Rio Grande, Arizaro, and Salinas Grandes, and totalling

over 140,000 hectares.

On Behalf of the Board of Directors,

Gabriel Rubacha

Chief Executive Officer and Director

For Further Information

Website: www.noalithium.com

Email: [email protected]

Telephone: +54-9-11-5060-4709

Alternative Telephone: +1-403-571-8013

Qualified Person

David O’Connor P.Geo., is the Qualified Person as defined by National Instrument 43 -101 –

Standards of Disclosure for Mineral Projects, and he has reviewed and approved the scientific and

technical information in this news release.

Cautionary Note Regarding Forward-Looking Statements

This news release contains forward-looking statements and other statements that are not historical

facts. Forward -looking statements are often identified by terms such as “will”, “may”, “should”,

“anticipate”, “expects” and similar expressions. All stateme nts other than statements of historical

fact, included in this news release are forward -looking statements that involve risks and

uncertainties. There can be no assurance that such statements will prove to be accurate and actual

results and future events could differ materially from those anticipated in such statements. Important

factors that could cause actual results to differ materially from the Company’s expectations include

the results of exploration drilling, further brine process testing and exploration and other risks detailed

from time to time in the filings made by the Company with securities regulators. The reader is

cautioned that assumptions used in the preparation of any forward-looking information may prove to

be incorrect. Events or circumsta nces may cause actual results to differ materially from those

predicted, as a result of numerous known and unknown risks, uncertainties, and other factors, many

of which are beyond the control of the Company. The reader is cautioned not to place undue reliance

on any forward -looking information. Such information, although considered reasonable by

management at the time of preparation, may prove to be incorrect and actual results may differ

materially from those anticipated. Forward -looking statements contai ned in this news release are

expressly qualified by this cautionary statement. The forward -looking statements contained in this

news release are made as of the date of this news release and the Company will update or revise

publicly any of the included forward-looking statements as expressly required by applicable law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined

in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy

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of this release. No securities regulatory authority has reviewed nor accepts responsibility for

the adequacy or accuracy of the content of this news release.