• Maiden RC drilling program completed at 100%-owned Yalgoo Gold Project
• Drilling targeted large-scale hydrothermal gold system at Mt Kersey and extensions to known mineralization
• High-resolution ground gravity survey completed at Rochefort Gold Prospect, Abbotts North Project

Premier1 Lithium Ltd completed its maiden RC drilling program at the 100%-owned Yalgoo Gold Project during the quarter, with 16 holes drilled for 2,776m across four prospects. The program was designed to test a large-scale, preserved hydrothermal gold system at Mt Kersey, located approximately 1km east of the Wadgingarra Maiden Inferred Resource. Drilling also targeted extensions to known mineralization at the Carlisle and Crescent South prospects within the Wadgingarra area. Assay results from the drilling program are expected in early Q2 2026. At the Abbotts North Project, Premier1 completed a high-resolution ground gravity survey at the Rochefort Gold Prospect, confirming that gold mineralization is located at the intersection of several major interpreted structures and lithological contacts. This structural setting is consistent with significant Yilgarn gold systems and enhances confidence in drill targeting. An UltraFines™ soil orientation survey also successfully validated the method, returning enhanced gold-in-soil responses and confirming extension of the Rochefort anomaly under shallow cover. Premier1 is now finalizing drill targets at Rochefort, with maiden drilling planned for Q2 2026, subject to regulatory approvals.

Premier1 is focused on advancing its gold and copper prospects in Western Australia to deliver value for shareholders. The company plans to receive and review assay results from the Yalgoo drilling program, assess the results to identify follow-up drill targets, and commence maiden drilling at the Rochefort Gold Prospect in Q2 2026, subject to regulatory approvals.