Andina Copper Provides Exploration Update at Piuquenes

Executive Summary

• Andina Copper reports ongoing drilling at Piuquenes East (hole PIU09 completed to 799.5 m, multiple mineralized zones) and the start of hole PIU10A targeting a high‑priority zone between East and Central.
• A deep‑penetrating magnetotelluric (MT) survey has identified a new, large low‑resistivity anomaly (~800 m × 700 m) at Piuquenes North; drill holes PN01 and PN02 are planned to test this target.
• The company has mobilized a second drill rig to enable concurrent drilling on East and North targets, indicating an accelerated exploration program.

Key Details

• PIU09 (Jan 2026): Drilled to 799.5 m; intersected mineralized intervals with visual logging of stronger mineralization from ~565‑635 m (assays pending). Upper interval logged at 370‑395.7 m; extensive zone from ~520 m persisting to ~675 m.
• PIU10A: Currently being drilled; aims to test a high‑priority target between East and Central zones, focusing on a NNE‑trending structure with phreatomagmatic breccia and early mineralization veinlets. Primary objective is an untested porphyry intrusive body at depth; secondary objective is structural linkage understanding.
• Assay Highlights (from prior drilling referenced): 208 m @ 0.31 % Cu, 0.13 g/t Au, 1.24 g/t Ag (starting at 292 m) including 98 m @ 0.49 % Cu, 0.16 g/t Au, 1.26 g/t Ag.
• MT Survey Results: Conducted Dec 2025; identified a coherent low‑resistivity anomaly at Piuquenes North measuring ~800 m × 700 m, extending >600 m below surface and well beneath existing drill limits.
• Planned Drilling at North: Holes PN01 and PN02 will target the MT anomaly; drilling to commence shortly.
• Operational Expansion: Second drill rig mobilized to allow simultaneous drilling on East and North targets.
• Technical Validation: Qualified Person Francisco Montes (MAIG #4160) reviewed and approved all technical information per NI 43‑101.

Notable Quotes

“Piuquenes has the characteristics of a significant Andean porphyry copper system, and a second drill rig has now been mobilized… The scale, coherence and depth extent of the MT anomaly are particularly encouraging…” – Joseph van den Elsen, President & CEO.