Copper Giant files NI 43-101 report for Mocoa project

Mr. Ian Harris reports COPPER GIANT ANNOUNCES FILING OF TECHNICAL REPORT FOR THE MOCOA PROJECT CONTAINING UPDATED MINERAL RESOURCE ESTIMATE Further to Copper Giant Resources Corp.'s news release dated Nov. 24, 2025, it has filed an independent technical report containing an updated mineral resource estimate (MRE) on the company's flagship Mocoa copper-molybdenum project in Putumayo, Colombia. The technical report has an effective date of Dec. 23, 2025, and was prepared in accordance with the National Instrument 43-101 -- Standards of Disclosures for Mineral Projects. The technical report can be found under the company's profile on SEDAR+ and is also available on the company's website. Highlights of the MRE include: Inferred mineral resources of 12.7 billion pounds (Blb) copper equivalent (CuEq) at an average grade of 0.51 per cent CuEq, including 7.6 Blb of copper at 0.31 per cent Cu and 1.0 Blb of molybdenum at 0.039 per cent Mo, within 1.12 billion tonnes; showing a 76-plus-per-cent increase in tonnage, 14-plus-per-cent increase in CuEq grade and 101-plus-per-cent increase in contained CuEq metal, compared with the project's previous MRE. The resource is constrained within a conservative revenue factor pit shell of 0.65, using $4.0 (U.S.)/pound copper and $20.0 (U.S.)/lb molybdenum at a cut-off of 0.25 per cent CuEq. The system remains open laterally and at depth, with multiple untested nearby porphyry targets. Mineral resource estimate Qualified person and technical notes The qualified persons for the technical report are Michael B. Dufresne (PGeo, PGeol, MSc), Warren E. Black (PGeo, MSc) and Kevin S. Hon (PGeo, BSc) from APEX Geoscience and Chester de Leon (PEng) from Consultec Ltd. Edwin Naranjo Sierra, vice-president of exploration for Copper Giant, is the designated qualified person within the meaning of National Instrument 43-101, and has reviewed and approved the technical information in this news release. Mr. Naranjo holds an MSc in earth sciences and is a fellow of the Australasian Institute of Mining and Metallurgy (FAusIMM). Mr. Naranjo is not independent of the company. Mineralized zones at Mocoa are bulk porphyry-style zones and drilled widths are interpreted to be very close to true widths. Copper Giant operates according to a rigorous quality assurance and quality control (QA/QC) protocol consistent with industry best practices. Core diameter is a mix of HQ and NQ depending on the depth of the drill hole. Diamond drill core boxes were photographed, sawed, sampled and tagged in maximum two-metre intervals, stopping in geological boundaries. Samples were bagged, tagged and packaged for shipment by truck from Copper Giant's core logging facilities in Mocoa, Colombia, to the ActLabs certified sample preparation facility in Medellin, Colombia. ActLabs is an accredited laboratory independent of the company. Samples are processed in the Medellin facilities where they are analyzed for copper, gold, silver, molybdenum, zinc and lead by four-acid digest atomic absorption (AA) analysis. The sample pulps are air freighted from Medellin to the ActLabs certified laboratory in Guadalajara, Mexico, where they are analyzed for a suite of 57 elements using four-acid digest and ICP-MS. In order to monitor the ongoing quality of assay data and the database, Copper Giant has implemented QA/QC protocols which include standard sampling methodologies, the insertion of certified copper and molybdenum standard materials, blanks, duplicates (field, preparation and analysis) randomly inserted into the sampling sequence. QA/QC program also includes continuing monitoring of data entry, QA/QC reporting and data validation. No material QA/QC issues have been identified with respect to sample collection, security and assaying. In the APEX QP's opinion there were no material QA/QC issues with respect to sample collection, security and assaying. About the Mocoa porphyry system The Mocoa project is located in Colombia's Department of Putumayo, approximately 10 kilometres from the town of Mocoa in the country's south. Copper Giant controls more than 132,499 hectares of district-scale tenure through granted titles and applications, covering a significant portion of the Jurassic porphyry belt -- an underexplored and highly prospective metallogenic corridor within the northern Andes. Mocoa was first identified in 1973 through a regional geochemical survey conducted by the United Nations and the Colombian government. Follow-up programs between 1978 and 1983 included geological mapping, IP and magnetic geophysics, surface sampling, drilling, and metallurgical testing. Subsequent drilling by B2Gold in 2008 and 2012 refined the geological interpretation and confirmed the large scale of the system. The deposit is hosted in Middle Jurassic dacite and quartz-diorite porphyries intruding andesitic to dacitic volcanics of the Central Cordillera, a 30-kilometre-wide tectonic belt that extends into Ecuador and also contains major porphyry systems such as Mirador, Warintza, San Carlos and Panantza. Mocoa exhibits classic porphyry-style zonation with a potassic core surrounded by sericite and propylitic alteration. Mineralization consists principally of disseminated chalcopyrite and molybdenite, accompanied locally by bornite and chalcocite, and is associated with stockwork veining and hydrothermal breccias. A distinguishing geological feature of Mocoa is the presence of a fertile magmatic window spanning roughly 10 million years, a prolonged and unusually productive interval of magma generation and evolution that is not commonly observed in other Jurassic porphyry systems within the same belt. This extended fertile period provides a compelling explanation for the system's large metal endowment, broad alteration footprint, and overlapping intrusive and hydrothermal events. The deposit demonstrates more than 1,000 metres of vertical continuity, with multiple intrusive phases, brecciation episodes and vein generations reflecting a dynamic and long-lived magmatic-hydrothermal evolution, likely influenced by more than one porphyry centre. Mocoa remains open in all directions, and several satellite targets across the broader land package support the interpretation of a district-scale mineralized system. Mocoa's MRE comprises inferred resources of 12.7 billion pounds (Blb) copper equivalent (CuEq) at an average grade of 0.51 per cent CuEq, including 7.7 Blb of copper at 0.31 per cent Cu and 1.0 Blb of molybdenum at 0.039 per cent Mo, within 1,120 million tonnes (Mt). About Copper Giant Resources Corp. Copper Giant Resources is part of the Fiore Group, a private and well-established Canadian organization known for building successful, high-impact companies across the natural resource sector. Copper Giant was formed with a singular focus: to advance high-quality copper projects beyond resource definition -- responsibly, efficiently and with long-term positive impact. The company is led by a team with uncommon experience, having successfully taken some of the few major copper mines developed in the past two decades from discovery through to construction. Copper Giant's current focus is the Mocoa copper-molybdenum deposit in southern Colombia, one of the largest undeveloped resources of its kind in the Americas. Recent exploration success has revealed potential well beyond its original footprint, highlighting Mocoa as a broader district-scale opportunity -- and the catalyst for the company's name and evolution. Guided by the values of respect and responsibility, and grounded in its good neighbour philosophy, Copper Giant is committed to creating enduring values for all stakeholders and playing a meaningful role in the global energy transition. We seek Safe Harbor.