Mr. Ian Harris reports

COPPER GIANT BEGINS PLANNED COMPREHENSIVE PEA FOR THE MOCOA COPPER-MOLYBDENUM SYSTEM WITH GLOBALLY RECOGNIZED DEVELOPMENT TEAM

Copper Giant Resources Corp. has started the work to file a preliminary economic assessment (PEA) in accordance with National Instrument 43-101 -- Standards of Disclosure for Mineral Projects for the Mocoa copper-molybdenum porphyry project in Putumayo, Colombia. It is anticipated that the PEA will evaluate multiple development scenarios -- including a base case and alternatives that consider different scales, capital requirements and mining approaches, for a system hosting an inferred resource 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). SLR Consulting has been appointed as lead consultant, supported by INTERA Inc. for hydrogeology and environmental studies, and Frank Wright Consulting with SGS Canada for metallurgical testing, which is already under way. APEX Geoscience continues to lead the updated mineral resource estimate that will underpin the study. This milestone represents an important step in advancing Mocoa toward development. The PEA is the next step after the securing of a long-term unified development framework for the project, the recently updated mineral resource estimate (MRE) and the launch of the company's fully financed 2026 exploration program.

• PEA program launched with a complete, globally recognized technical team. SLR as lead author, INTERA for hydrogeology and environmental, Frank Wright Consulting and SGS Canada for metallurgy, and APEX Geoscience for the resource model. The team brings direct experience on major porphyry copper systems and mining projects in the Americas and Colombia.
• Multiple development scenarios will be evaluated, including a base case and alternatives considering different project scales, capital requirements and mining approaches -- providing a range of development pathways to inform the optimal strategy for Mocoa.
• Parallel workstreams already advancing. Metallurgical testing under Frank Wright and SGS Canada has returned initial recoveries of up to 92 per cent copper and 97 per cent molybdenum (refer to news released dated Oct. 2, 2025), exceeding the assumptions in the current resource model. APEX is leading the updated MRE, and three drill rigs continue to operate as part of the fully financed 2026 exploration program.
• The PEA scope includes defining the technical work program required to eventually advance toward prefeasibility study (PFS). Beyond delivering a NI 43-101-compliant economic assessment, the PEA will identify data gaps, prioritize additional drilling and studies, and establish the road map from PEA through to PFS, building a clear, sequenced path to development.

"Our team has taken major copper mines from discovery through to construction -- we know what rigorous independent evaluation looks like, and we know what it takes to build the road map from study to development decision. The team we've now assembled applies that standard to Mocoa. The question is no longer whether this system is real. The question is which development pathway creates the most value and how we get there. This PEA is designed to answer both," stated Ian Harris, chief executive officer.

Strategic importance

The Mocoa PEA is designed to evaluate the project's potential development pathways and provide a conceptual economic assessment to support anticipated advancement toward PFS level work. The PEA will assess alternative mining and development scenarios, including scale, sequencing, and infrastructure configurations, to identify a preferred conceptual approach supported by preliminary mine planning, process design, and capital and operating cost estimates. The results are expected to clarify key project drivers and inform decision-making for subsequent study stages. Beyond the economic assessment, the PEA is intended to establish a clear and actionable technical road map toward PFS, including identification of critical data gaps, prioritization of drilling targets, and definition of additional metallurgical, geotechnical, hydrogeological and environmental work required to advance the project. The company expects the PEA to serve as the foundation for co-ordinated technical programs through 2026 to 2027. The study will be executed through a phased approach designed to deliver defined technical outputs, culminating in a NI 43-101-compliant technical report supported by qualified persons. The PEA is being delivered by an integrated team comprising SLR as lead consultant, INTERA for hydrogeological and environmental inputs, APEX Geoscience for mineral resource estimation, and Frank Wright Consulting and SGS Canada for metallurgical testing.

In parallel with the PEA, the company is advancing key technical workstreams, including continuing resource expansion and conversion drilling, metallurgical variability testing led by Frank Wright Consulting and SGS Canada, and geotechnical and hydrogeological programs. APEX Geoscience continues to support mineral resource work, including inputs to an updated MRE, which is expected to inform the study where appropriate.

Copper and molybdenum remain critical materials in global electrification, energy infrastructure and industrial supply chains, with long-term demand growth continuing to highlight the need for new large-scale development projects. The advancement of the PEA follows the company's recent title integration milestone (refer to news release dated April 28, 2026), which established a consolidated, long-term development framework for the Mocoa project. The PEA represents the next step in evaluating development alternatives within this expanded and unified project footprint.

Anticipated PEA work program and timeline

It is anticipated that the PEA will follow a structured, phased approach:

• Phase 1 -- data review and gap analysis (Q2 2026): establishment of validated data sets, key study assumptions, and a prioritized work program to address critical technical gaps and support advancement toward PFS;
• Phase 2 -- trade-off studies and initial design (Q2 to Q3 2026): delivery of comparative development scenarios and identification of a preferred conceptual pathway based on scale, sequencing, capital intensity and overall project configuration;
• Phase 3 -- integrated engineering and economic modelling (Q3 2026): definition of preliminary mine plans, process design criteria, infrastructure layouts, and associated capital and operating cost estimates, supported by an integrated economic model;
• Phase 4 -- reporting and delivery (Q4 2026): completion of the NI 43-101-compliant PEA technical report, including supporting documentation, sensitivity analyses and recommendations for advancement to PFS.

The company is targeting completion of the PEA in the second half of 2026, with flexibility to incorporate results from the ongoing 2026 drilling program and parallel metallurgical and environmental workstreams.

Qualified person and technical notes

Edwin Naranjo Sierra, vice-president of exploration for Copper Giant, is the designated qualified person within the meaning of NI 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.

Mocoa's mineral resource estimate1 comprises inferred resource 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). Copper equivalent (CuEq) for drill hole interceptions is calculated as: CuEq (per cent) equals Cu (per cent) plus 5.278 multiplied by Mo (per cent), utilizing metal prices of Cu -- $4.00 (U.S.)/lb and Mo -- $20.00 (U.S.)/lb, and metal recoveries of 90 per cent Cu and 95 per cent Mo.

Inferred mineral resources are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that all or any part of the inferred mineral resources will be upgraded to an indicated or measured category. The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves.

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 Ha 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 mineral resource estimate1 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.