Copper One intercepts 1.155% Cu at Sport Project, Utah

VANCOUVER, BC — September 4, 2026 - TheNewswire — Copper One Resources Corp. (CSE: CEXY | OTCID: CEXYF | FSE: IW8 | WKN: A42AGR) (“Copper One” or the “Company”) is pleased to announce new surface copper assay results from a first-pass reconnaissance program at the Sport Project ( “Sport” or the “Project” ) in Utah’s historic San Francisco Mining District ( “Frisco” ), which the Company is acquiring through its proposed acquisition of Rooinek Mining Corp. ( “Rooinek” ) (see news release dated July 20, 2026 ).

Highlights

Grab samples returned up to 1.155% Cu (SP002), with visible malachite and chalcopyrite, from a first-pass surface program of 50 rock grab samples (Table 1, Figure 2).

The Company’s initial interpretation is that copper-silver mineralization occurs along faults and other structural conduits within a geological setting characterized by breccia- and intrusive-related copper mineralization.

Results support the Company’s thesis that the underexplored margins of the Frisco copper trend warrant further exploration. The Sport Project lies on trend with Hawk Resources’ (ASX: HWK) Cactus Copper-Gold Project.

Next steps: expanded surface sampling, geological mapping and geophysics to vector toward a potential intrusive copper source, plus gold fire assays on all reconnaissance samples.

David Greenway, President and CEO of Copper One, commented: “These initial results help further delineate favorable exploration zones in the highly prospective Sport Project, with surface samples returning up to 1.155% copper from our first-pass reconnaissance program. Identifying this level of copper mineralization at surface provides a strong starting point for systematic follow-up exploration. We now intend to expand our sampling, mapping and