Core Viewpoint - Patriot Battery Metals Inc. announced a maiden Mineral Resource Estimate for caesium at the Rigel and Vega zones of its Shaakichiuwaanaan Property, highlighting the significance of this discovery and its implications for the company's future projects [1]. Group 1 - The live investor webinar will be hosted by Ken Brinsden, the Company's President, CEO, and Managing Director, to discuss the caesium discovery and provide updates on the lithium-only Definitive Feasibility Study for CV5 Shaakichiuwaanaan [1]. - Investors and shareholders can submit questions during the webinar or in advance via email to the Investor Relations Manager [2]. - The webinar is scheduled for July 22, 2025, at 8:00 AM Australian Western Standard Time, lasting approximately 45 minutes, with registration available online [3].

Core Insights - The company has confirmed the world's largest pollucite-hosted caesium pegmatite deposit at the Shaakichiuwaanaan Project, with a maiden Mineral Resource Estimate (MRE) for the Rigel and Vega zones [4][8][11] - The total contained caesium content is 30.5 kt Cs2O Indicated and 40.8 kt Cs2O Inferred, highlighting the scale and global significance of the discovery [4][8][11] - The caesium resources are included within the CV13 Pegmatite open-pit resource, which forms part of the company's consolidated MRE for the project [4][8][11] Mineral Resource Estimate - Rigel Caesium Zone: Indicated 163,000 t at 10.25% Cs2O, 1.78% Li2O, and 646 ppm Ta2O5 [11] - Vega Caesium Zone: Indicated 530,000 t at 2.61% Cs2O, 2.23% Li2O, and 172 ppm Ta2O5; Inferred 1,698,000 t at 2.40% Cs2O, 1.81% Li2O, and 245 ppm Ta2O5 [11] - The consolidated MRE includes Indicated 108.0 Mt at 1.40% Li2O, 0.11% Cs2O, and Inferred 33.4 Mt at 1.33% Li2O, 0.21% Cs2O [20] Market Potential - Caesium is a high-value, rare, and critical mineral currently supply constrained, with limited sources supplying the global market [4][17] - The discovery has the potential to be a primary source of supply for global markets, including applications in next-generation terrestrial solar panel technologies [4][17] - The market for caesium compounds is largely opaque, trading through bi-lateral contracts, with caesium carbonate currently trading at approximately US$120/kg and refined caesium metal around US$2,540/oz [16][17] Next Steps - The company is evaluating options to advance and incorporate the caesium opportunity at CV13 as a potential additional saleable product following the completion of the lithium-only Feasibility Study on the CV5 Pegmatite [19][21] - A scoping metallurgical program has commenced to test pollucite recovery using conventional X-ray ore sorting methods [21] - The company remains on track to deliver a maiden Ore Reserve and Feasibility Study for lithium at the CV5 Spodumene Pegmatite in CYQ3-2025 [4][22]