Highlights

• A review of the Company's drill core assay dataset has identified multiple distinct areas of considerable cesium enrichment (>1% Cs2O)
• Primary zone of enrichment is coincident with the Company's high-grade lithium Vega Zone (CV13) and can be traced in drill holes over a very large area of approximately 600 m x 400 m and remains open in several directions.
• Pollucite, the principal and preferred ore mineral for cesium, has been identified by XRD mineralogical analysis at the CV13 Pegmatite and is interpreted to be the principal source of the cesium enrichment at the Property. A more focused mineralogical program is underway.
• This extremely rare Cesium mineral has the potential to become a meaningful by-product to future lithium operations.
• Cesium results in drill hole and channel include:
  • 10.4 m at 1.30% Cs2O, including 4.0 m at 2.02% Cs2O (CV23-117) at CV5.
  • 10.6 m at >1.00% Cs2O (CV24-754) at CV13 – Cs overlimit analysis pending1
  • 7.1 m at >1.00% Cs2O (CV24-520) at CV13 – Cs overlimit analysis pending1
  • 0.5 m at 9.58% Cs2O (Channel CH22-047) – CV12
• Overlimit (>1% Cs) assay results for cesium are pending for more than 140 individual core samples with final grade-width calculations for drill holes to be reported once received.
• Economic deposits are typically on the scale of <10 kt to 350,000 kt in size, compared to typical lithium pegmatite deposits that range in the millions of tonnes (<10 Mt and rarely over 100 Mt) in size.
• The Company understands that there are only a handful of operators globally currently producing Cesium products, resulting in it being a highly rare and valuable commodity given it has a number of significant industrial applications.

Darren L. Smith, Patriot Executive and Vice President of Exploration, comments: "The identification of multiple zones of extensive cesium mineralization in drill hole at Shaakichiuwaanaan is very significant. Cesium pegmatite occurrences over 1% Cs2O are very rare and represent only the most fractioned and evolved portion of a pegmatite body. Although the focus for the Company is lithium pegmatite and advancing CV5 to production, there is a clear opportunity to potentially delineate a pollucite (cesium) zone of significant scale. Moreover, given the scarcity and value of cesium, there is a strong potential to further enhance stakeholder value."

VANCOUVER,BC, March 2, 2025 /PRNewswire/ - March 3, 2025 – Sydney, Australia

Patriot Battery Metals Inc. (the "Company" or "Patriot") (TSX: PMET) (ASX: PMT) (OTCQX: PMETF) (FSE: R9GA) is pleased to announce the discovery of a large zone of cesium mineralization at the CV13 Pegmatite, which forms part of the Company's wholly owned Shaakichiuwaanaan Property (the "Property" or "Project"), located in the Eeyou Istchee James Bay region of Quebec.