Andina Copper Reports Significant Copper-Molybdenum Mineralization Expansion at Colombian Project

Andina Copper Corporation reported encouraging assay results from drillhole CDH006 at its Cobrasco Project in Chocó, Colombia, confirming the northwest extension of the mineralized system. The hole, collared approximately 400 meters northwest of previous drill pads, intersected near-surface mineralization beginning at 38 meters and continuing through multiple intervals to a faulted contact at 808 meters.

The results include a significant intercept of 486 meters grading 0.42% copper, 51 parts per million molybdenum, and 1.20 grams per ton silver. Within this broader interval, a higher-grade zone of 232 meters from 38 meters depth returned 0.68% copper, 75 parts per million molybdenum, and 2.0 grams per ton silver. Two additional step-out drillholes, CDH007 and CDH008, have been completed from the same platform testing northeast and north extensions, with assay results pending.

Systematic step-out drilling continues to expand the known mineralization footprint within the upper 600 meters, now covering approximately 950 by 525 meters laterally. The mineralized system remains open in all directions and will continue to be targeted in Andina's ongoing drill program. Every drillhole completed to date has returned significant porphyry copper-molybdenum mineralization from surface or near-surface to depths of approximately 600 meters.

Andina Copper's President and CEO Joseph van den Elsen stated that broadly spaced, systematic "scout" drilling will continue to define the limits of mineralization while testing newly developed targets. Preparations are underway for mobilizing a second drill rig to support both new target definition and in-fill drilling across widely spaced scout holes completed to date. A new program of surface mapping and geochemical sampling is being prepared to run concurrently with drilling to delineate multiple targets for follow-up work.

The geological significance of drillhole CDH006 reveals more evident structural controls on mineralization than previous holes, showing clear association between structural preparation of host units and resulting alteration and mineralization. The upper approximately 46 meters of drill core show strong weathering with saprolites featuring strong oxidation and clay formation. A low-angle fault structure at this point marks the introduction of high copper and molybdenum grades, with sample G517536 from 46-48 meters returning 4.6% copper and 1,495 parts per million molybdenum.

The Company's Corporate Presentation is available at: https://www.andinacopper.com/investors/presentations. Additional technical details including drill collar parameters and significant intercepts can be referenced in the company's complete data release. The 232-meter high-grade intercept reported for CDH006 applied a 0.2% copper cut-off with maximum dilution of 10 meters throughout the reported intercept, with interval widths measured down-hole and uncorrected for true widths.