Endeavour Silver mills 57,080 t at Terronera in July

Mr. Don Gray reports ENDEAVOUR SILVER'S TERRONERA MINE STARTUP ADVANCING WELL, AVERAGING OVER 1,800 TONNES PER DAY IN JULY Endeavour Silver Corp. has made steady progress at its Terronera mine in Jalisco state, Mexico. For the month of July, a total of 57,080 tonnes were milled at Terronera, an average of 1,841 tonnes per day. Since completing the commissioning phase, throughput has rapidly increased, with current milling rates between 1,900 and 2,000 tonnes per day as adjustments to improve recoveries are continuing in the grinding and flotation circuits. Since July 16, 2025, silver and gold recoveries have averaged 71 per cent and 67 per cent, respectively, while processing lower-grade material. Higher-grade material is scheduled for processing soon, while optimization efforts continue. The introduction of higher-grade material is expected to directly enhance recoveries. As higher recoveries are attained, the focus will shift to increasing the milling rate to sustain the designed throughput of 2,000 tonnes per day. "We are very pleased with how well start-up has progressed," commented Don Gray, chief operating officer. "Our Terronera team has really taken ownership with the mill start-up and throughput increase while simultaneously managing the challenges that arise in the early start-up phase. Our focus on implementing our business readiness plan has well positioned us for successful operation of Endeavour's next core asset." With each phase of the mill ramp-up advancing, Terronera continues to move steadily toward its targeted sustainable production levels and, ultimately, commercial production. About Endeavour Silver Corp. Endeavour is a mid-tier precious metals company committed to sustainable and responsible mining practices. With operations in Mexico and Peru and the development of the new cornerstone mine in Jalisco state, the company aims to contribute positively to the mining industry and the communities in which it operates. In addition, Endeavour has a portfolio of exploration projects in Mexico, Chile and the United States, which has helped it achieve its goal of becoming a premier senior silver producer. Qualified person Dale Mah, PGeo, vice-president, corporate development, a qualified person under National Instrument 43-101, has approved the scientific and technical information related to operations matters in this news release. We seek Safe Harbor.