RETRANSMISSION: Amex Delivers a Positive Feasibility Study for Development of the Perron Gold Mine

Feasibility Phase 1 Highlights Gold production to average 147,000 oz per year over the 5 years of commercial Phase 1 production at an All in Sustaining Cost ("AISC") of USD$910/oz Au Projected Post-Tax IRR of 114.6% and Post-Tax NPV5 of CAD$1.13 billion generated from a Cumulative Undiscounted Post-Tax Cash Flow of CAD$1.44 billion at an assumed gold price USD$3,500/oz The Phase 1 Feasibility Study evaluates an initial development scenario at Perron, building on the broader potential outlined in the September 2025 PEA, which indicated a potential mine life of approximately 17 years1 Phase 1 mine development consists of two (2) years pre-production, followed by five (5) years of commercial mining and toll milling operations Executing a toll milling approach reduces risks and accelerates production schedule targeting revenue in 2028 Proven and Probable mineable reserve of 1,989 kilotonnes at a grade of 12.1 grams per tonne, for 774,000 ounces of gold mined Low initial capital cost estimate of CAD$193.9 million After-tax payback period of 0.5 years Montreal, Quebec--(Newsfile Corp. - April 13, 2026) - Amex Exploration Inc. (TSXV: AMX) (FSE: MX0) (OTCQX: AMXEF) ("Amex" or the "Company") is pleased to announce the results of a feasibility study ("FS") for the Phase 1 development of the 100%-owned Perron Gold Mine, located in the community of Valcanton and 6.5 kilometers north-west of the municipality, of Normétal, in the Abitibi region of Québec, the Perron Gold Mine is planned to consist of multiple phases. Phase 1 of the Life of Mine ("LOM") will utilise underground mining and toll-milling of the high-grade Champagne Zone.