Andina Copper Reports Drill Intercept at Cobrasco Project

Vancouver, British Columbia — April 14, 2026 — Leads & Copy — Andina Copper Corporation (TSX-V: ANDC | FSE: FIR | OTCQB: PMMCF) announced another outstanding drill intercept from hole CDH006 at the Cobrasco Project in Chocó, Colombia.

Drillhole CDH006 was collared on a step-out platform located approximately 400m northwest of the previous drill pads. The hole was designed to test the northwest extension of the mineralized system and is the first of several holes planned from this location.

Assay results from CDH006 include near-surface mineralization commencing at 38m within weathered saprolite and continuing through multiple anomalous intervals in rhyodacitic porphyries to a faulted contact at 808m. Two additional holes have since been completed from the same drill platform. Visible mineralization has been observed in both holes, and assay results are pending.

Highlights include that CDH006 confirms the continuity of the Cobrasco Central Cu-Mo mineralization system to the NW.

The drill results include 486m @ 0.42% Cu, 51ppm Mo, 1.20g/t Ag; including 336m @ 0.51% Cu, 53ppm Mo, 1.50g/t Ag; including 232m @ 0.68% Cu, 75ppm Mo, 2.0g/t Ag from 38m.

Additional step-out drillholes CDH007 and CDH008 have been completed from same drill platform testing extensions to mineralization in NE and N orientations (assays pending). The company reports the ongoing program of drilling has added to the known mineralization footprint at Cobrasco Central, with every drillhole completed to date returning significant porphyry Cu-Mo mineralization from surface or near-surface to depths of approximately 600m.

Systematic step-out drilling continues to expand the known mineralization footprint within the upper 600m, already covering a lateral extent of approximately 950 x 525m, which remains open in all directions. The significant porphyry complex comprises multiple intrusive phases, subvolcanic flow-domes and mineralization events demonstrated at Cobrasco Central. The mineralized system currently remains open in all directions and will continue to be targeted in Andina’s ongoing drill program.

Andina Copper’s President and CEO Joseph van den Elsen commented that every scout drillhole completed to-date has intersected significant intervals of Cu-Mo mineralization, further extending the mineralization footprint. This footprint now covers an area of at least 950 x 525m within the emerging Cobrasco Central mineralization.

Van den Elsen added that broadly spaced, systematic “scout” drilling will continue to define the limits of mineralization, which remains open in all directions, and to test newly developed targets. A new program of surface mapping and geochemical sampling is being prepared to run concurrently with this drilling and is intended to delineate multiple targets for follow-up sampling and drilling.

Preparations are also underway for the mobilization of a second drill rig, which will support both the definition of new mineralized targets and in-fill drilling across the widely spaced scout holes completed to date.

Drillhole CDH006 was collared approximately 400m NW of the previous drill pad #4 (CDH002 – CDH005) and approximately 300m SW of pad #1 (CDH001). This new location (pad #3) will be used to drill a fan of holes testing the overall NW-extension of the mineralization footprint.

Hole CDH006 (Az: 225o Dip: -60º Depth: 898.90m), being the first hole from this drill pad was collared to test a SW section, parallel to holes CDH001 and CDH004, covering approximately 500m in the horizontal and 750m in the vertical planes. In broad terms, the lithologies intersected in CDH006 correspond to felsic porphyries of rhyodacite composition with mineralized intervals related to chalcopyrite sometimes replaced by bornite in intensely fractured rocks.

Hydrothermal alteration is strong argillic in the upper portions of the drillhole, progressing to phyllic and ubiquitous grey-green-sericite (GGS) which has been associated with the bulk of the mineralization defined thus far.

In general terms, the upper ~46m of the drill core are strongly weathered and characterized by saprolites with strong oxidation and clay formation. A low-angle fault-structure (sub-parallel to drill axis) at this point marks the introduction of high copper and molybdenum grades (e.g. sample G517536: 46 – 48m 4.6% Cu, 1495ppm Mo). The rocks bounding this structure are friable, with strong argillic alteration, with mineralization being predominantly pyrite-chalcopyrite with traces of bornite. At greater depths, lithology is characterized by more competent units of rhyolite and rhyodacite with local occurrences of quartz-sulphide veining. Alteration is typically weak to moderate GGS increasing to phyllic alteration particularly over zones of brecciation. A well-marked zone of magmatic brecciation in the felsic porphyry units extends to 270m, typically characterized by an increase in A-veins and high Cu-Mo grades. The interval 38m to 270m contains the stand-out mineralized intercept reported in this announcement (232m at 0.68% Cu, 75ppm Mo from 38m).

A faulted contact at 808m marks the end of the magmatic-hydrothermal brecciation in the drillhole and the start of a distinct polymictic intrusive breccia showing matrix-supported sub-angular to sub-rounded rhyolite to microdiorite fragments in a pyritic matrix. Mineralization decreases markedly although sporadic mineralized intervals continue to the end of hole (e.g. Sample G543022: 894 – 896m 0.48% Cu, 58ppm Mo).

Andina Copper Corporation is a South America-focused copper explorer listed on the TSX Venture Exchange (TSXV:ANDC), Frankfurt (FSE: FIR), and OTC (OTCQB: PMMCF) exchanges. The Company holds two significant discoveries along the world’s premier copper producing Andean porphyry belt in Argentina and Colombia, and a copper-gold target in the prolific copper production district of the Coastal Cordillera of Chile.

Source: Andina Copper