Luca Mining Corp. (“Luca” or the “Company”) (TSX-V: LUCA; OTCQX: LUCMF; Frankfurt: Z68) is pleased to provide an update on ongoing initiatives to improve operational efficiencies at its Campo Morado and Tahuehueto mines. With the addition of new operational leadership, Luca is advancing these initiatives which are designed to improve mill performance andthroughput, as well as optimize mining activities, at both mines. At Campo Morado, strong performance of mining contractor Cominvi, combined with improved mine planning, has resulted in creation of a surface stockpile of mineralized material of approximately 63,000 tonnes as at May 31, 2026, a five-fold increase from the less than 12,000 tonnes at December 31, 2025. Mill throughput has remained strong and consistent in April-May, with an average of approximately 1,900 tonnes per day (“tpd”). This establishment of a meaningful surface ore stockpile at Campo Morado will allow Luca to optimize the mill feed blend at