Aris Mining continues ramp of Segovia operations

Mr. Oliver Dachsel reports ARIS MINING ANNOUNCES STEADY RAMP-UP AT SEGOVIA FOLLOWING SECOND MILL COMMISSIONING IN LATE JUNE Aris Mining Corp. has made strong progress with the ramp up at its Segovia operations following successful commissioning of a second mill in June, 2025. The expanded processing capacity has already delivered a substantial increase in mill throughput and gold production. Key highlights: The second mill was successfully commissioned in late June, 2025, on time and within budget, increasing installed processing capacity by 50 per cent from 2,000 tonnes per day (tpd) to 3,000 tpd. Milling rates increased sharply in July and August, averaging 2,415 tpd, compared with 1,971 tpd over the six months ended June 30, 2025. In August, throughput also reached approximately 3,000 tpd on several days, demonstrating strong operating performance at design capacity. Processed gold grades averaged 10.02 g/t Au in July and August, which reflects disciplined use of the additional processing capacity and production growth without compromising grade. Year-to-date gold production at Segovia to Aug. 31, 2025, totals 141,893 ounces, including 42,817 ounces produced in July and August. In addition, the Marmato Narrow vein zone contributed 4,936 ounces in July and August, bringing consolidated year-to-date gold production to 161,168 ounces. Aris Mining remains on track to achieve its full year 2025 production guidance of 230,000 to 275,000 ounces. About Aris Mining Corp. Founded in September, 2022, Aris Mining was established with a vision to build a leading Latin America-focused gold mining company. The company's strategy blends current production and cash flow generation with transformational growth driven by expansions of our operating assets, exploration and development projects. Aris Mining intends to unlock value through scale and diversification. The company is listed on the Toronto Stock Exchange (ARIS) and the New York Stock Exchange-A (ARMN), and is led by an experienced team with a record of value creation, operational excellence, financial discipline and good corporate governance in the gold mining industry. Aris Mining operates two underground gold mines in Colombia: the Segovia operations and the Marmato complex, which together produced 210,955 ounces of gold in 2024. With expansions under way, Aris Mining is targeting an annual production rate of more than 500,000 ounces of gold, following the commissioning of the second mill at Segovia, completed in June and ramping up during H2 2025, and the construction of the bulk mining zone at the Marmato complex, expected to start ramping up production in H2 2026. In addition, Aris Mining operates the 51-per-cent-owned Soto Norte joint venture, where a PFS (preliminary feasibility study) study is complete on a new, smaller-scale development plan which confirms Soto Norte as a high-quality, long-life project with robust economics and industry-leading environmental and social design features. In Guyana, Aris Mining owns the Toroparu gold/copper project, where a new preliminary economic assessment (PEA) is under way. Colombia is rich in high-grade gold deposits and Aris Mining is actively pursuing partnerships with the country's dynamic small-scale mining sector. With these partnerships, the company enables safe, legal and environmentally responsible operations that benefit both local communities and the industry. Qualified person Pamela De Mark, PGeo, senior vice-president, geology and exploration, of Aris Mining, is a qualified person as defined by National Instrument 43-101, and has reviewed and approved the technical information contained in this news release. We seek Safe Harbor.