Announcement • 15h

Copper One Resources Corp. Expands Phase 2 Drill Program And Engages Evolve Exploration Nevada At Majuba Hill Copper-Silver-Gold Project

Copper One Resources Corp. had engaged Evolve Exploration Nevada, LLC to undertake diamond core drilling at its 100%-owned flagship Majuba Hill Copper-Silver-Gold Project in Pershing County, Nevada, under a drilling services agreement dated September 15, 2026. The Company expanded its planned Phase 2 diamond core drilling program to up to 10,000 feet (3,048 metres) of HQ/PQ diamond core drilling. The expanded Phase 2 Program is intended to accelerate systematic testing of priority targets at Majuba Hill and support the Company’s objective of advancing the Project toward a maiden mineral resource estimate prepared in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects. More than 90,000 feet (27,432 metres) have been drilled to date at Majuba Hill in more than 100 drill holes. Assay results from the completed 2026 Phase 1 drill program remain pending. The Phase 2 Program is expected to commence on or about October 1, 2026. Chalcopyrite and pyrrhotite observed within the breccia zone in hole MHB-37B at approximately 1,982 feet (604 metres). Assays are pending. Visual identification is preliminary and should not be considered a substitute for laboratory assay results. COMEX copper futures were quoted at approximately USD 6.64 per pound as of September 18, 2026. Expanded program of up to 10,000 feet (3,048 metres) of diamond core drilling. Initial approximately 5,000 feet (1,524 metres) contracted to Evolve using one portable HQ/PQ core drill. Continuous, two-shift drilling operations planned on a 24-hour-per-day, seven-day-per-week basis. Maximum planned hole depth under the initial scope of approximately 1,700 feet (518 metres), with final collar locations, azimuths, inclinations and depths to be determined by the Company’s technical team. Real-time operational visibility through Evolve’s EVX Connect platform. Every Evolve drill rig operates on EVX Connect, Evolve’s real-time operational platform. Through EVX Connect, Copper One expects to receive live drilling metrics, digital PLOD reporting, drill-hole coordinate tracking, streamlined invoicing and high-quality photographs of drill core as it is recovered. Information will be accessible through web and mobile interfaces, providing the Company’s technical and management teams with timely visibility into drilling progress and field operations. Majuba Hill is Copper One Resources Corp.’s flagship copper-silver-gold exploration project, located in Pershing County, Nevada, USA. The property comprises approximately 9,684 acres (3,919 hectares) and is situated approximately 70 miles (113 road kilometres) southwest of Winnemucca and 156 miles (251 kilometres) northeast of Reno. The project benefits from excellent infrastructure, including year-round road access, nearby electrical power, water, and access to a skilled mining workforce. Majuba Hill is a past-producing copper mine with an extensive exploration database, including approximately 89,395 feet (27,248 metres) of historical drilling, providing a strong technical foundation for ongoing exploration aimed at further defining the extent and economic potential of the mineralized system. Exploration has outlined a large copper-silver-gold hydrothermal mineralized system that remains open for expansion. Current exploration is focused on advancing the Company's geological model through systematic drilling, geological mapping, geochemical sampling, and structural interpretation to evaluate the scale, continuity, and significance of mineralization. Additional drilling and technical studies will be required to further define the extent and economic potential of the mineralized system. Majuba Hill 2026 drilling target zones, completed drill holes and planned drill holes. The scientific and technical information contained in this news release has been reviewed and approved by Larry Segerstrom, M.Sc. (Geology), CPG, a non-independent consulting geologist to the Company and a Qualified Person as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects.

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