Leading Edge Materials Moves to 90% Share of Romanian Exploration JV with Comprehensive Underground Exploration Programme Planned at Avram Iancu

About this update from Leading Edge Materials Corp.

LEADING EDGE MATERIALS MOVES TO 90% SHARE OF ROMANIAN EXPLORATION JV WITH COMPREHENSIVE UNDERGROUND EXPLORATION PROGRAMME PLANNED AT AVRAM IANCU Vancouver, May 26, 2026 – Leading Edge Materials Corp. (“Leading Edge Materials” or the “Company”) (TSXV: LEM) (Nasdaq First North: LEMSE) (OTCQB: LEMIF) (FRA: 7FL) has increased its stake in the Bihor Sud Exploration Licence joint venture to 90%, following an amendment to the shareholders joint venture agreement (“JVA”) originally entered into with REMAT Group Management SRL ("REMAT") on August 9, 2018. The amended shareholders JVA recognises the Company's significant investment in the licence over the past eight years. The Company is in discussions to secure new investment into LEM Romania (“LEMR”) to advance underground exploration at Avram Iancu, part of the Bihor Sud Polymetallic Exploration Project ("Bihor Sud"). Initial work will focus on three principal galleries — G11, G12, and G20 — on the northern bank of the Arieșul Mic Valley. Avram Iancu is situated approximately 3 km north of the G2 and G7 galleries where the Company has been focusing its exploration to date and represents an extensive mineralised zone parallel to those outlined in G2. The planned June/July 2026 programme is designed to systematically characterise a mineralised zone, estimated at approximately 2 km along strike and 300 metres in width, outcropping on both sides of the valley. Addison Mining Services Limited (“Addison”) has been contracted by LEMR to design and supervise the exploration programme for Avram Iancu, model results and estimate potential exploration targets. Addison were previously commissioned by LEM to prepare a Competent Persons Report (“CPR”) and independent assessment of Bihor Sud; the CPR has been filed on the System for Electronic Document Analysis and Retrieval (“SEDAR”). Figure 1: Map showing the three main galleries (G11, G12 and G20) on the northern side of the Arieșul Mic Valley, with gallery entrances marked by purple arrows. Programme Overview The exploration plan potentially covers three galleries accessible individually from surface, possibly connected through inclined planes linking the former workings (pending safety review). The vertical extent of the planned programme spans over 200 metres, from the highest stope in G20 down to the lower-level stopes beneath G11, with gall...

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