Oroco drills 26.48 m of 1.18% CuEq in South Zone

VANCOUVER, British Columbia, Aug. 06, 2026 (GLOBE NEWSWIRE) -- Oroco Resource Corp. (TSX-V: OCO; OTCQB: ORRCF) ("Oroco" or the "Company") is pleased to report the third set of assay results from its Phase 2 resource drilling program focused on the South Zone at its Santo Tomás copper project, Choix, Sinaloa, Mexico. Results are reported for drill holes S027 and S030 through S034. The Company continues drilling with three rigs on site.

Highlights

Westernmost limit of inferred mineralization –central portion of the South Zone

Holes S031 and S034 confirmed the local westward extension of mineralization beyond the current inferred block model limits in the central western portion of the South Zone.

Hole S031 is a hole drilled westwards at -65 degrees from the same pad as S029 (previous release). The hole intersected near-surface mineralization and drilled out of inferred material, extending newly identified mineralization westwards. Mineralized outcrops to the west of the intercept suggest a wedge of mineralization extending up to 330m in that direction.

Hole S033 was drilled at -50 degrees eastwards from a pad located 50m to the east of S034. Intersected mineralization included 26.48m @ 0.90% Cu / 1.18% CuEq* from a depth of 48.0m. Additional intercepts are included below.

Hole S034 was collared 80m north of S031 and drilled westwards at -60 degrees. The hole displayed mineralization similar to that observed in S031 and, as with S031, intersected mineralization outside the inferred material. Surface mineralization to the west again supports a wedge of additional mineralization to the west.

South end of the South Zone– Holes containing Oxide and Transition mineralization

Hole S027 is a vertical hole drilled from the same pad as S030 and S032. The mineralization observed in this hole, combined with results from S032 and S030 and surface expressions of copper oxides, essentially defines the southern limit of th