Mr. Kenneth Brinsden reports

PATRIOT PROVIDES PROGRESS UPDATE ON THE FEASIBILITY STUDY AT THE SHAAKICHIUWAANAAN PROPERTY

Patriot Battery Metals Inc. has provided a progress update on the feasibility study at the Shaakichiuwaanaan property located in the Eeyou Istchee James Bay region of Quebec.

Highlights:

• The feasibility study is progressing to plan with a target September, 2025, completion date.
• An updated block model for the CV5 pegmatite has been completed and handed over to the FS team using the extensive resource development/infill drilling program from 2024 and inclusive of the high-grade Nova zone (see news release dated Feb. 27, 2025).
• The FS will support the company's environmental and social impact assessment submission, which is also expected to be finalized and submitted in September, 2025.
• The FS is expected to closely resemble the scope proposed in the previously published preliminary economic assessment, inclusive of utilizing dense media separation only processing and staged production growth.
• The strong cash position following the Volkswagen/PowerCo strategic investment and offtake agreement supports continued project progress through the FS and continuing environmental approvals.

Ken Brinsden, Patriot chief executive officer and president, commented: "Building on the significant progress achieved over the last three years at Shaakichiuwaanaan, the team is well advanced in 2025 with multiple parallel workstreams under way around resource development, environmental studies and documentation, and the feasibility study.

"With the support of our key strategic shareholders VW, the company has been unwavering in progressing the project as quickly and efficiently as possible, ensuring the project's pre-eminent position among North American lithium development proposals," added Mr. Brinsden.

The Shaakichiuwaanaan property hosts a consolidated mineral resource estimate (1) of 80.1 million tonnes at 1.44 per cent lithium oxide indicated and 62.5 Mt at 1.31 per cent Li2O inferred. The CV5 spodumene pegmatite, which forms the bulk of the MRE, is accessible year-round by all-season road and is situated approximately 14 kilometres from a major hydroelectric power line corridor. The CV13 pegmatite is located fewer than three kilometres along geological trend from the CV5 pegmatite, which hosts additional lithium and tantalum resources, as well as a recently discovered zone of cesium mineralization (see news release dated March 2, 2025). The FS on the Shaakichiuwaanaan project's CV5 pegmatite commenced in September, 2024. G Mining Services of Montreal, Que., has been selected to be the project integrator of the National Instrument 43-101 report with associated work on the FS to be completed by the following consultants:

• G Mining Services: approximately 70 per cent of the total FS engineering work including mine design;
• Primero Americas: DMS plant design;
• Atkinsrealis: waste and water management design;
• Vision geochemistry: geochemistry program design and site-wide water modelling;
• Paterson & Cooke: pastefill plant design;
• BBA Engineering: geology.

The FS was launched following a comprehensive preliminary economic assessment study completed by the company in August, 2024 (see news release dated Aug. 21, 2024). Prior to commencing the FS, various work programs were undertaken, which included significant field, desktop and lab work. Trade-off studies were also completed by the integrated team to align on the best mine development pathway forward for the FS.

Following this work, it was determined that the FS will be progressed to closely resemble the scope proposed within the previously published PEA, inclusive of staged production growth. The FS continues with the DMS only process methodology, based on the excellent recovery characteristics demonstrated through the previously reported metallurgical testwork of 2023 and 2024. DMS only processing simplifies construction, commissioning and continuing operations, and lowers cost when compared with the addition of flotation recovery techniques.

Work continues to determine the optimum schedule for underground mining, including access to the high-grade Nova zone.

The high-grade Nova zone has been traced in multiple drill holes over a strike length of at least 1,100 metres, with geological modelling supporting a continuous spodumene mineralized zone of variable thickness at grades well in excess of 2 per cent Li2O, occurring between vertical depths of approximately 125 to 325 metres.

The updated and finalized block model for the CV5 pegmatite has been completed by BBA Engineering (the qualified person for geology and the mineral resource model), and has been handed over to G Mining (project integrator and QP for the coming mineral reserve).

Handover of the updated block model has allowed work to commence on the final mine design for the FS based on the indicated resources contained within. The open-pit and underground mine design teams are fully engaged and completing the final mine design, along with all the other supporting consultants on FS deliverables. The FS team is expected to remain on schedule to deliver the NI 43-101 final report in September, 2025.

Qualified/competent person

The information in this news release that relates to exploration results for the Shaakichiuwaanaan property is based on, and fairly represents, information compiled by Darren L. Smith, MSc, PGeo, who is a qualified person as defined by National Instrument 43-101 (Standards of Disclosure for Mineral Projects), and a member in good standing with the Ordre des Geologues du Quebec (geologist permit No. 01968), and with the Association of Professional Engineers and Geoscientists of Alberta (member No. 87868). Mr. Smith has reviewed and approved the technical information in this news release.

Mr. Smith is an executive and vice-president of exploration for Patriot Battery, and holds common shares and options in the company.

Mr. Smith has sufficient experience, which is relevant to the style of mineralization, type of deposit under consideration and to the activities being undertaken to qualify as a competent person as described by the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the Joint Ore Reserves Committee Code). Mr. Smith consents to the inclusion in this news release of the matters based on his information in the form and context in which it appears.

About Patriot Battery Metals Inc.

Patriot Battery is a hardrock lithium exploration company focused on advancing its district-scale 100-per-cent-owned Shaakichiuwaanaan property (formerly known as Corvette) located in the Eeyou Istchee James Bay region of Quebec, Canada, which is accessible year-round by all-season road and is proximal to regional power line infrastructure. The Shaakichiuwaanaan mineral resource (1), which includes the CV5 and CV13 spodumene pegmatites, totals 80.1 Mt at 1.44 per cent Li2O indicated, and 62.5 Mt at 1.31 per cent Li2O inferred, and ranks as the largest lithium pegmatite resource in the Americas and the eighth-largest lithium pegmatite resource in the world.

A preliminary economic assessment was announced for the CV5 pegmatite Aug. 21, 2024, and highlights it as a potential North American lithium raw material powerhouse. The PEA outlines the potential for a competitive and globally significant high-grade lithium project targeting up to approximately 800,000 tonnes per year spodumene concentrate using a simple dense media separation only process flow sheet.

(1) Shaakichiuwaanaan (CV5 and CV13) mineral resource estimate (80.1 Mt at 1.44 per cent Li2O and 163 parts per million Ta2O5 indicated, and 62.5 Mt at 1.31 per cent Li2O and 147 ppm Ta2O5 ppm inferred) is reported at a cut-off grade of 0.40 per cent Li2O (open pit), 0.60 per cent Li2O (underground CV5) and 0.80 per cent Li2O (underground CV13) with an effective date of Aug. 21, 2024 (through drill hole CV24-526). Mineral resources are not mineral reserves as they do not have demonstrated economic viability.

We seek Safe Harbor.