NI 43-101 compliant report supports previously announced PEA results for titanium and rare earths project

Resouro Strategic Metals Inc. (TSX-V: RSM) (ASX: RAU) (OTCQB: RSGOF) (FSE: 8TX) has filed an independent technical report for the Tiros Titanium and Rare Earths Project, located in Minas Gerais, Brazil. The Company previously disclosed the results of a preliminary economic assessment on the Tiros Project in its June 14/15, 2026 news release and the Supplementary Information released on June 17, 2026 in response to ASX Listing Rule 5.16 requirements.

“This report independently supports the strong technical and economic foundations of our staged development strategy,” said Christopher Eager, Resouro’s Chief Executive Officer. “It demonstrates that a relatively small, high-grade starter operation has the potential to generate attractive economics while targeting less than one percent of our current Measured and Indicated Mineral Resource. This approach has been designed to reduce upfront capital requirements, shorten the pathway toward production, lower execution risk and preserve exceptional long-term expansion potential.”

The Technical Report evaluates the development of a staged, high-grade starter operation based on a 500,000 tonne per annum processing facility operating over a 20-year mine life. The study targets approximately 9.5 million tonnes of high-grade run-of-mine material that represents less than one percent of the Company’s 1.4 billion tonne Measured and Indicated Mineral Resource grading 12% titanium dioxide (“TiO₂”), 4,000 ppm total rare earth oxides and 1,100 ppm magnetic rare earth oxides.

The PEA is preliminary in nature. It includes Inferred Mineral Resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as Mineral Reserves, and there is no certainty that the PEA will be realized. It is not a feasibility study. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. There is a low level of geological confidence associated with Inferred Mineral Resources, that there is no certainty further exploration will convert them to Indicated Resources, and that there is no certainty the production target itself will be realised.

Highlights:

• Strong Project Economics: The PEA outlines positive project economics, with an after-tax NPV (8% discount rate) of US$714.9 million, and after-tax internal rate of return of 44.2%, an estimated after-tax payback period of 1.9 years, and a mine life of 20 years.
• Capital-efficient Development Strategy: The PEA supports a capital-efficient, staged development strategy centered on a 500,000 tonne per annum high-grade starter operation that targets less than 1% of the current Measured and Indicated Mineral Resource, reducing initial capital requirements while providing a pathway to production and preserving significant long-term expansion potential.
• Favorable Project Fundamentals: The Project combines conventional free-digging open-pit mining with a low strip ratio, the production of three potential product streams assumed in the PEA including a coarse titanium dioxide concentrate, a fine titanium dioxide concentrate and a Mixed Rare Earth Carbonate, and a location in the established mining jurisdiction of Minas Gerais, Brazil, with access to existing infrastructure and a skilled workforce. The conceptual design also incorporates dry-stack tailings.

Other than as set out below, Resouro confirms that it is not aware of any new information or data that materially affects the forecast financial information and production target for the Tiros Project as previously disclosed in the June 14/15, 2026 news release, and that all other material assumptions underpinning the after-tax NPV, after-tax IRR, after-tax payback period and mine life referred to above continue to apply and have not materially changed. The form and context in which those economic outcomes are presented in this news release have not been materially modified from the original announcement.

The Technical Report titled “NI 43-101 Technical Report and Preliminary Economic Assessment for the Tiros Rare Earths and Titanium Project, Minas Gerais, Brazil” dated July 29, 2026, and effective July 10, 2026, was prepared by an independent multidisciplinary team led by Norda Stelo Inc. in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects and Form 43-101F1. The Technical Report is available on the Company’s profile at www.sedarplus.ca and on its website at www.resouro.com.

The Technical Report provides the detailed scientific, engineering and economic basis for the PEA previously announced by the Company in the June 14/15 news release and June 17 Supplementary Information. Compared with those announcements, the Technical Report corrects an overstatement of acid reagent consumption in the process model. Considered in isolation, this correction would increase the project NPV. The cost and economic models also incorporate a corresponding revision to the reagent unit price, which offsets the effect of the consumption correction. Consequently, these corrections have no net effect on the previously reported project NPV. The QPs have reviewed these revisions and are comfortable with these updates.

Qualified Person and Competent Person Statements

This news release has been reviewed and approved by the relevant Qualified Persons under NI 43-101 and Competent Persons under the JORC Code, each in respect of the scientific and technical information falling within the area of responsibility attributed to that person below.

Competent Person (JORC)

The information in this announcement that relates to Mineral Resources is based on, and fairly represents, information compiled or reviewed by Mr. Simon Mortimer (M.Sc., MAusIMM, FAIG), a Competent Person who is a Fellow of The Australasian Institute of Mining and Metallurgy and a Member of the Australian Institute of Geoscientists, and an independent consultant engaged by the Company through Atticus Geoscience Consulting.

The information that relates to production targets and mining factors is based on, and fairly represents, information compiled or reviewed by Mr. Giorgio de Tomi (FIMMM, CEng), an independent consultant.

The information that relates to mineral processing and metallurgical testing, including laboratory test work results and test work recoveries, is based on, and fairly represents, information compiled or reviewed by Mr. Richard Wagner (P.Eng., a Member of Professional Engineers Ontario) of Richard Herman Otto Wagner.

The information that relates to recovery methods, process design criteria, design recovery assumptions, process plant design and process-related infrastructure is based on, and fairly represents, information compiled or reviewed by Mr. Gavin Beer (FAusIMM CP(Met)), independent consultant of Met-Chem Consulting Pty Ltd.

The information that relates to tailings and waste management is based on, and fairly represents, information compiled or reviewed by Mr. Aleksandar Spasojevic, (PhD, P.Eng., a Member of Professional Engineers Ontario) of Ausenco.

The information that relates to environmental, permitting and social impact is based on, and fairly represents information compiled or reviewed by Mr. Jean-Marc Lopez, (B.Sc, FAusIMM) of JML Geology & Consulting.

The information that relates to capital and operating cost estimates and marketing assumptions is based on, and fairly represents, information compiled or reviewed by Mrs. Kerrine Azougarh (P.Eng., a Member of Professional Engineers Ontario) of Norda Stelo.

The information that relates to economic analysis, including NPV, IRR and payback period is based on, and fairly represents, information compiled or reviewed by Mr. João Augusto Hilário de Souza, a Member of the Australian Institute of Geoscientists (MAIG #4084), of L&M Assessoria.

Each Competent Person named above has sufficient experience that is relevant to the style of mineralization and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore

Reserves (the JORC Code), and consents to the inclusion in this news release of the matters based on their information in the form and context in which it appears.

The Mineral Resources underpinning the production target in the PEA have been prepared, in accordance with the requirements of the JORC Code 2012 as previously reported by the Company in its June 14/15, 2026, news release. The Company confirms that it is not aware of any new information or data that materially affects the information included in that news release and that all material assumptions and technical parameters underpinning the estimates referred to therein continue to apply and have not materially changed.

Qualified Persons

The scientific and technical information in this press release (including the appendix) has been reviewed and approved by the Qualified Persons listed below, each in respect of the information within the area of responsibility stated after their name. Each Qualified Person is independent of the Company as defined in and required by NI 43-101.

• Simon Mortimer, M.Sc., MAusIMM, FAIG, of Atticus Geoscience Consulting Ltd. — Geology and Mineral Resource Estimation
• Richard Wagner, P.Eng., a Member of Professional Engineers Ontario, of Richard Herman Otto Wagner — Mineral Processing and Metallurgical Testing
• Giorgio de Tomi, FIMMM, CEng, QMR, an independent consultant — Mining Engineering
• Gavin Beer, FAusIMM CP(Met), independent consultant of Met-Chem Consulting Pty Ltd — Process Plant, Recovery Methods and Infrastructure
• Aleksandar Spasojevic, PhD, P.Eng., a Member of Professional Engineers Ontario, of Ausenco — Tailings and Waste Management
• Jean-Marc Lopez, B.Sc, FAusIMM, Senior Principal Consultant of JML Geology & Consulting – Environmental, Permitting and Social Impact
• Kerrine Azougarh, P.Eng., a Member of Professional Engineers Ontario, of Norda Stelo — Capital and Operating Costs and Marketing
• João Augusto Hilário de Souza, Member of Australian Institute of Geoscientists (AIG), of L&M Assessoria — Economic Analysis

About Resouro Strategic Metals

Resouro is a Canadian mineral exploration and development company focused on the discovery and development of economic mineral projects in Brazil. Its flagship Tiros Titanium and Rare Earth Elements Project comprises 28 mineral concessions totalling 497 km² in the state of Minas Gerais, one of Brazil’s most infrastructurally developed states. The Tiros Project is supported by a JORC-compliant Mineral Resource Estimate and a Preliminary Economic Assessment for a starter operation. Resouro is also developing the Novo Mundo gold project, located in Mato Grosso state.