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NeoTerrex Completes Phase I Exploration Program on Revolver Rare Earth Elements Project

Exploration Programs

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NeoTerrex Completes Phase I Exploration Program on Revolver Rare Earth

Elements Project

August 21, 2025 – Ottawa, ON, Canada – NeoTerrex Minerals Inc. (TSXV: NTX) (“NeoTerrex” or the

“Company”) is pleased to announce the successful completion of the first phase (Phase I) of its exploration

program on the 100%-owned Revolver rare earth elements (“REE”) project (the “Project”), located in the

Saguenay region of Quebec.

Highlights

• Phase I program completed: reconnaissance prospecting, detailed geological mapping, and

systematic sampling over high-priority targets.

• 21 new REE occurrences identified in 2024, with assays up to 7.16% total rare earth oxides (TREO).

• Two heavy rare earth –enriched zones prioritized for follow -up to evaluate size potential, host

geology, and extensions.

• Over 49 grab and channel samples collected from outcrops and angular boulders; assay results

currently pending analysis.

• Project advantage: located 39 km from the Niobec rare earth and niobium mine, and 35 km from

the city of Saguenay, providing excellent infrastructure access.

The Phase I program built on the strong results from the 2024 campaign, which identified 21 new REE

occurrences across the Project (see NeoTerrex December 12, 2024 news release). The 2025 work was

designed to:

• Confirm the extent and geological controls of the most promising heavy rare earth–enriched

zones.

• Expand coverage across underexplored areas of the Project.

• Collect representative samples for geochemical analysis and mineralogical studies.

Systematic sampling during Phase I resulted in the collection of more than 49 grab and channel samples,

targeting outcrops, angular boulders, and mineralized trends. These samples are now undergoing

laboratory analysis, with results expected to guide the definition of drill-ready targets.

Pending assay results from Phase I, NeoTerrex intends to:

• Conduct target definition and prioritization to select areas for mechanical stripping and trenching.

• Advance mineralogical test work to determine potential processing pathways.

• Prepare for a Phase II exploration program, which may include geophysical surveys and initial

drilling on priority targets.

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Initial results highlight the Revolver Project’s potential as a new rare earth –bearing district in Quebec.

Early discoveries include light and heavy rare earths occurrences and strategically significant elements

critical to high-strength permanent magnets used in electric vehicles and military technologies.

NeoTerrex maintains a strong treasury with approximately $ 3 million in working capital and no debt,

enabling the Company to advance multiple projects in parallel. In addition to Revolver, NeoTerrex

continues to evaluate and advance its Galactic, Gravitas, and Mount Discovery projects, each of which

hosts significant rare earth element and other critical metals potential.

Through its multi-project portfolio approach, NeoTerrex aims to advance its position in the exploration of

critical metals in North America, with the objective of contributing to the long-term security of supply for

Western markets.

Qualified Person

The technical and scientific content of this news release has been reviewed, verified, and approved by

Mathieu Stephens, P.Geo., President and CEO of NeoTerrex, and a Qualified Person as defined under

National Instrument 43-101- Standards of Disclosure for Mineral Projects.

About NeoTerrex

NeoTerrex Minerals is a Canadian mineral exploration company focused on the discovery and

development of critical metal projects in Quebec. The Company controls a portfolio of 100% -owned

properties that host multiple rare earth element occurrences and other strategic metals essential for

permanent magnet technologies used in electric vehicles, wind turbines, and advanced defense

applications. With projects located in mining -friendly jurisdictions near infrastructure, a strong balance

sheet, and a technically experienced team, NeoTerrex is positioned to play a key role in building a secure

and sustainable North American rare earth supply chain.

For further information, please contact:

NeoTerrex Minerals Inc.

Mathieu Stephens, President & Chief Executive Officer

[email protected]

343-308-2648

Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV)

accepts responsibility for the adequacy or accuracy of this news release.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This news release may contain certain forward -looking information and statements, including without

limitation, statements pertaining to NeoTerrex’s future plans , objectives or goals including its phase II

2025 exploration program for the Project. All statements included herein, other than statements of

historical fact, are forward -looking information and such information involves various risks and

uncertainties. The Company does not undertake to update any forward -looking information except in

accordance with applicable securities laws. There can be no assurance that such information will prove to

be accurate, and actual results and future events could differ materially from those ant icipated in such

information. A description of assumptions used to develop such forward -looking information and a

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description of risk factors that may cause actual results to differ materially from forward -looking

information can be found in the Company's disclosure documents on the SEDAR+ website at

www.sedarplus.ca.