Andina begins field assessment of Mantau target

Mr. Joseph van den Elsen reports ANDINA COPPER INITIATES FIELD EVALUATION OF MANTAU COPPER PROJECT, CHILE As preparations for field mobilization at the flagship Piuquenes and Cobrasco projects advance, Andina Copper Corp. has commenced a field assessment of the Mantau copper-gold target in the Antofagasta region of northern Chile. Mantau is located in a prolific copper district and adjoins tenements hosting Marimaca Copper's recent Pampa Medina Norte sulphide copper discovery. Mantau copper-gold project highlights: Multiple historical copper workings occur within a 4,500-hectare tenement package in the low-altitude Coastal Cordillera of Chile, one of the world's premier mining jurisdictions; Potential to host stratabound (Manto) and iron oxide copper/gold style copper and gold mineralization; Limited previous surface rock chip sampling around historical workings has returned grades up to 28.6 per cent copper and 5.91 grams per tonne gold; Close proximity to Marimaca Copper's recent Pampa Medina sulphide copper discovery and the Pias target; Other noteworthy projects in the near vicinity include Marimaca Copper's Mod deposit (one million tonnes contained copper approximately 20 kilometres southwest) and Antofagasta PLC's Cachorro discovery (approximately 250 Mt of 1.26 per cent Cu and four g/t silver approximately 20 kilometres east); Excellent access to infrastructure with multiple operating copper mines and development projects nearby. Work program summary: Andina has initiated a comprehensive review of historical work and currently has an exploration team on site conducting reconnaissance mapping and rock chip sampling of historical occurrences and alteration zones defined in Aster spectral imagery. A detailed geochemical orientation survey to determine optimized future sampling techniques and assay methodology is also being prepared, in addition to drone-based aerial photogrammetry over the extent of the project concessions. Detailed lithogeochemical sampling of all rock types will also be completed to establish background values and pathfinder geochemistry. Evaluation of cost-effective geophysical techniques applicable to the mineralization styles and geology of Mantau and the surrounding district is under way, including a detailed (close-spaced) magnetics survey, conducted either through conventional ground-based or aerial (drone)-based platforms. Other techniques such as induced polarization and audiomagnetotelluric, which have been instrumental in the delineation of deep sulphide mineralization in the adjoining Pias and Pampa Medina targets, will also be assessed for a follow-up stage of geophysical data acquisition. President and chief executive officer Joseph van den Elsen commented: "As we continue to advance preparations for the 2025/26 field season at Piuquenes and recommencement of drilling at Cobrasco, we are very excited to commence initial assessment of the Mantau Cu-Au target located in the Tier 1 address of Antofagasta, Chile. Our work will build upon the data from limited historical exploration, utilizing the latest technologies to rapidly advance our understanding of the projects' potential. Mantau is well located amongst numerous copper mines and recent discoveries, and is an exciting, highly prospective third leg within the portfolio. This is an exciting time to be a shareholder of Andina Copper as we enter a period of intensive field activities and associated news flow and also pursue a dual listing on the TSX-V and ASX." Qualified person Francisco Montes, a consultant of Andina Copper, a qualified person within the definition of that term in National Instrument 43-101 (Standards of Disclosure for Mineral Projects), has verified the scientific and technical information that forms the basis for this news release. Francisco Montes is a member of the Australian Institute of Geoscientists (MAIG No. 4160). About Andina Copper Corp. Andina Copper (formerly Pampa Metals Corp.) is a unique South America-focused copper explorer listed on the Canadian Securities Exchange and the Frankfurt and OTC exchanges. 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. We seek Safe Harbor.