NexMetals Reports 11.15 Metres of 7.65% CuEq (3.10% Cu, 2.21% Ni) at Selebi Main, Highlighting a Kilometre-Scale Trend of Thick, High-Grade Massive Sulphides

Vancouver, British Columbia--(Newsfile Corp. - July 22, 2026) - NexMetals Mining Corp. (TSXV: NEXM) (NASDAQ: NEXM) ("NEXM" or the "Company") is pleased to report assay results from drill holes SMD-26-210, 212-W1, 213 and 214, part of its 30,000-metre surface drilling program targeting the emerging Flexure Zone ("Flexure Zone") within the Selebi Main deposit in Botswana (see Figure 1). The latest results continue to validate the Company's data-driven exploration model, with drilling continuing to intersect thick, high-grade massive sulphides beyond the limits of the 2024 Mineral Resource Estimate ("2024 MRE"). Together with borehole electromagnetic ("BHEM") targeting, these results define a growing kilometre-scale trend that remains open and supports the expansion potential of the Selebi system.

What You Need to Know: Four New Intersections and Strong Intercept from SMD-26-212-W1 * Drill hole SMD-26-212-W1 intersected a 11.15 metre interval of massive sulphides grading 7.65% CuEq (3.10% Cu, 2.21% Ni), one of the most significant massive sulphide intercepts drilled at Selebi Main. * The intercept confirms an emerging kilometre-scale trend of thick, high-grade massive sulphides, extending beyond the 2024 MRE. * All four drill holes intersected sulphide mineralization, including multiple intervals of massive sulphides. * The Flexure Zone is now defined by widely spaced drill holes approximately 200-300 metres apart, demonstrating significant lateral extent and continuity. * Modeled BHEM anomalies show continuation north of drilling, indicating the system remains open for expansion. What Does This Mean? * Drilling at a nominal 200-metre spacing continues to intersect thick, high-grade massive sulphides demonstrating the growing scale of the Selebi Main deposit. * SMD-26-212-W1 closely replicates SMD-25-205 (11.05 metres of 7.31% CuEq: see news release dated February 26, 2026) and correlates with historic hole sd119 (26.1m of 8.29% CuEq, 3.39%Cu, 2.38% Ni: see Selebi Technical Report), demonstrating that the Flexure Zone contains multiple thick, high-grade massive sulphide intersections. * These results now outline a mineralized trend exceeding one kilometre in strike length, representing a compelling growth opportunity at Selebi Main. * The close correlation between drill hole results and the strongest BHEM conductors validates the Company's data-driven exploration approach and provides confidence in additional high-priority targets along strike. Next Steps * The 2026 Mineral Resource Estimate ("2026 MRE") remains on track for completion in the third quarter of 2026. * The Company has engaged TECT Geological Consulting to develop an integrated three-dimensional geological and structural model for Selebi North and Selebi Main. The model is expected to enhance the Company's understanding of the geological controls of mineralization across the mining license, support future resource growth and improve drill targeting of thicker, higher-grade zones, and identify potential regional exploration targets. Sean Whiteford, CEO and Director of the Company, commented: "The Selebi Main deposit continues to exceed our expectations. Each phase of drilling has expanded our understanding of the system, while continuing to deliver exceptional grades and thicknesses. Historically, sd119 was viewed as a standalone thick, high-grade massive sulphide intersection. Today, results from SMD-25-205 and SMD-26-212-W1 demonstrate that even at a 200-metre drill spacing, we continue to intersect thick, high-grade massive sulphides. These results are defining an emerging trend extending for more than one kilometre beyond the 2024 MRE. Importantly, the trend remains open, and we are still refining our understanding of the geological and structural controls responsible for these thicker, higher-grade zones.