Mr. Joseph van den Elsen reports

ANDINA COPPER INTERSECTS 264M AT 0.63% CU FROM 36M WITHIN 504M AT 0.48% CU, FURTHER EXPANDS MINERALIZED FOOTPRINT

Andina Copper Corp. has released additional outstanding drill results from its large-scale Cobrasco porphyry copper-molybdenum discovery in Choco, Colombia. Andina Copper is in the early stages of a systematic, wide-spaced scout drilling program using substantial stepouts to delineate the lateral extent and limits of this exciting new discovery. Hole CDH010, collared from the same drill pad as CDH006 to CDH009 (refer June 24, 2026, news release) and drilled to the west-southwest, intersected a strongly mineralized upper interval commencing at 36 metres and extending to 540 m downhole. Moderate-grade to lower-grade mineralization continues at depth to approximately 820 m downhole. The hole was terminated at a final depth of 844.65 m.

Hole CDH010 further extends and confirms the continuity of shallow Cu-Mo mineralization within the central portion of the Cobrasco system.

Highlights:

• 504 m at 0.48 per cent Cu and 37 parts per million Mo from 36 m:
  • Including 264 m at 0.63 per cent Cu and 35 ppm Mo from 36 m;
  • And 36 m at 0.62 per cent Cu from 486 m;
• 84 m at 0.40 per cent Cu and 91 ppm Mo from 660 m:
  • Including 44 m at 0.45 per cent Cu and 120 ppm Mo from 700 m;
• An additional drill hole (CDH011) has been completed from the same pad as CDH006 to CDH010 (Pad 3), and multiple holes have recently been drilled from a large stepout position located 350 m to the northwest.; results are pending;
• A mineralized footprint of approximately 1,200 m by 550 to 700 m has been delineated from the initial 10 diamond drill holes reported to date for approximately 11,000 m, and the system remains wide open in multiple directions.

Joseph van den Elsen, president and chief executive officer of Andina Copper, stated: "Andina Copper continues to systematically advance its wide-spaced scout drilling program, with hole CDH010 returning another high-grade near-surface intercept. Every hole completed from this platform has intersected long runs of shallow copper mineralization, underlining the exceptional continuity of the Cobrasco system. The drill-defined footprint of the Cobrasco mineralized porphyry system now measures approximately 1,200 m by 550 to 700 m and remains open in all directions. With results from CDH011 imminent and drilling continuing from a new platform 350 m to the northwest, we look forward to a continuing steady flow of results and the systematic expansion of the Cobrasco deposit."

Geology and mineralization -- drill hole CDH010

Hole CDH010 was collared from the same drill pad as CDH006 to CDH009 (and subsequent hole CDH011). It was drilled west-southwest to bisect the wide untested area between CDH006 and CDH009 and to test the continuation of shallow mineralization previously intersected from this collar position. All holes completed thus far from this pad have intersected consistent intervals of shallow, continuous moderate to high-grade Cu-Mo mineralization beginning immediately below the base of oxidation.

Hole CDH010 (azimuth: 260 degrees; dip: minus 60 degrees; depth: 844.65 m) was the fifth hole drilled from this drill pad, designed to test approximately 410 m horizontally and 735 m vertically.

The hole intersected a supergene-leached zone extending to approximately 36 m downhole. From the base of this zone to approximately 54 m downhole, moderate supergene chalcocite enrichment occurs as coatings on pyrite and chalcopyrite. Below the supergene-enriched zone, significant hypogene chalcopyrite mineralization continues to approximately 322 m downhole as disseminations and veinlets hosted by rhyolite porphyries and subordinate daci-andesitic porphyries, microdiorite and magmatic-hydrothermal breccias.

Magmatic-hydrothermal breccias and adjacent structurally controlled zones between 186 m and 312 m downhole host the highest copper grades intersected in the hole, including 60 m at 0.74 per cent Cu from 186 m and 20 m at 1.18 per cent Cu from 216 m.

Below 322 m, mineralization continues at moderate grades within rhyolite porphyries and magmatic-hydrothermal breccias, including 36 m at 0.62 per cent Cu from 486 m. At greater depth, molybdenite-bearing B-type quartz veins occur within an interval returning 84 m at 0.40 per cent Cu and 91 ppm Mo from 660 m.

In broad terms, the rhyolite porphyries intrude the intermediate-composition daci-andesitic porphyries and microdiorites. The highest copper grades in CDH010 are associated with intense white sericite-illite alteration, particularly within magmatic-hydrothermal breccias intersected between 216 m and 296 m downhole.

Qualified person

Gustavo Zulliger, a consultant of Andina Copper and a qualified person within the definition of that term in National Instrument 43-101, Standards of Disclosure for Mineral Projects, has reviewed and approved the technical information contained in this news release. Mr. Zulliger is a certified professional geologist with the American Institute of Professional Geologists (CPG No. 11165).

Quality assurance/quality control

CDH010 was collared with a PQ-sized drill string to a depth of 180.50 m and continued with HQ/HQ3 to a final depth of 844.65 m. In all cases, the drill core was extracted from the core barrel by the drill contractor under the supervision of Andina Copper personnel and placed in core boxes with appropriate depth markers (core blocks) and padding added for extra protection during transport. Full core boxes were then strapped closed before being transported by helicopter and pickup truck to the Cobrasco core-cutting facility in Quibdo. The drill core was cleaned where required, marked up and photographed, prior to undergoing geotechnical and geological logging. All core segments were cut by diamond saw by Andina Copper technicians, other than the top saprolite intervals that could be cut and sampled using hand tools. All sampling was conducted in nominal two-metre intervals, with cut lines marked by the supervising geologists to ensure representative sampling. Samples were placed in plastic bags with non-repeatable sample tags and bagged in polyweave sacks ready for transport.

The core trays with the remaining half-core are stored at the Andina Copper facility in Quibdo for continuing geotechnical (Terraspec spectral analysis, magnetic susceptibility readings and rock density measurements) and follow-up detailed geological logging. From Quibdo, core samples were sent to the ALS sample preparation facility in Medellin, an accredited laboratory that is independent of the company. Prepared sample pulps were then forwarded to the ALS laboratory in Lima, Peru, for gold (Au-AA23), multielement (ME-MS61) and overlimit analyses (ME-OG62, including copper Cu-OG62). Coarse and fine rejects are routinely returned by ALS Medellin for storage at the Andina Copper storage facility.

About Andina Copper Corp.

Andina Copper is a unique South America-focused copper explorer listed on the TSX Venture Exchange (symbol: ANDC), the Frankfurt Stock Exchange (symbol: FIR) and the OTCQB (symbol: PMMCF). The company holds two significant discoveries along the world's premier copper-producing Andean porphyry belt in Argentina and Colombia and a compelling undrilled copper-gold target in the prolific copper production district of the Coastal Cordillera of Chile.

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