Mr. Ian Harris reports

COPPER GIANT TARGETS NEW PORPHYRY CENTERS BEYOND MOCOA RESOURCE WITH THIRD DRILL RIG

Copper Giant Resources Corp. has mobilized a third diamond drill rig as part of its 2026 exploration program at the Mocoa copper-molybdenum porphyry project in Colombia. Mocoa is a Jurassic age porphyry Cu-Mo deposit where drilling to date has delineated continuous copper and molybdenum mineralization from surface to depth exceeding 1,100 vertical metres. The addition of a third rig marks a key transition from resource definition to systematic testing of new porphyry centres beyond the current mineral resource estimate (MRE) footprint, targeting La Estrella and Piedralisa. Drilling continues at full capacity with two drill rigs currently operating on site.

Third drill rig mobilized to test undrilled porphyry targets beyond the current resource footprint. Mobilization is expected to begin in the coming weeks.

First-ever drill testing of La Estrella and Piedralisa. Two of nine priority targets identified across a district shaped by approximately 10 million years of fertile magmatic activity.

Marks transitions to systematic district-scale exploration while resource growth and conversion continue with two rigs at full capacity.

"The addition of a third drill rig reflects the confidence we are building in the broader Mocoa system. Targets like La Estrella and Piedralisa are supported by strong geological, geochemical and geophysical signatures but have never been drilled. This phase is about testing that potential directly, while our two existing rigs continue expanding and upgrading the current resource. Together, this positions us to advance Mocoa as both a large deposit and a broader district-scale system," said Edwin Naranjo Sierra, vice-president of exploration.

Strategic context

The mobilization of a third drill rig reflects the company's growing confidence in the scale potential of the Mocoa porphyry system and represents the next step in executing its 2026 exploration strategy (refer to news release dated Feb. 17, 2026). The addition of a third rig advances this strategy, enabling the company to accelerate target testing while maintaining steady progress toward preliminary-economic-assessment-level advancement. While two rigs remain focused on resource expansion and conversion within and around the current MRE footprint, the third rig will be dedicated to testing new targets that could represent additional mineralized centres within the district. Importantly, this step is a direct continuation of insights gained from recent drilling. Hole MD-056, completed along the southern edge of the MRE footprint, intersected porphyry mineralization associated with a microdiorite intrusive phase and demonstrated improving grades at depth, reinforcing the interpretation that the system remains open and may strengthen toward the south (refer to news release dated March 6, 2026). These results provide a strong geological vector toward the La Estrella area, supporting the company's decision to advance drilling in this highly prospective area. Mocoa's porphyry system formed over an unusually prolonged fertile magmatic window of approximately 10 million years, a duration more commonly associated with major cluster-style districts such as Chuquicamata and Rio Blanco-Los Bronces. The mobilization of a third rig to test La Estrella and Piedralisa is the first step in evaluating whether Mocoa represents a similar multicentre cluster, with nine priority targets identified across the 1,324-square-kilometre land package. This marks the first time dedicated drilling is being deployed to test new porphyry centres across the broader land package, a key step in evaluating the cluster-scale potential of Mocoa.

The La Estrella target

The La Estrella target, located immediately south of the current MRE footprint, represents a high-priority drill target supported by converging geological, geochemical and drilling evidence. Recent drilling along the southern margin of Mocoa has provided a clear vector toward this area. Continuing surface work has identified a well-developed Cu-Mo geochemical anomaly, with soil values up to 558 parts per million Cu and 264 ppm Mo and rock samples returning up to 1,105 ppm Cu and 98.4 ppm Mo (Table 1). This anomaly is spatially associated with zones of phyllic alteration, silicification and mineralized veinlets, consistent with porphyry-style systems. Additionally, geophysical interpretation and historical work define a radial intrusive signature with associated potassium alteration, supporting the presence of a potential porphyry centre at depth. Mineralization at surface is interpreted to represent the upper expression of a hydrothermal system, with alteration patterns and geochemical coherence providing a clear vector toward a new potentially porphyry centre. The upcoming drill program is designed to test this thesis through deeper and strategically positioned holes.

Piedralisa target

The Piedralisa target, located approximately three kilometres southeast of the Mocoa deposit, represents a second high-priority target within the broader cluster. Surface prospecting has defined a Cu-Mo geochemical anomaly, with rock samples returning up to 1,280 ppm Cu and 89.8 ppm Mo, supported by coincident soil anomalies and hydrothermal alteration (Table 1). Mineralization is hosted in sericite-altered volcanic and intrusive rocks with local quartz-sulphide veining consistent with porphyry-style systems. The target is spatially associated with regional structural corridors and geophysical features interpreted to be favourable for porphyry emplacement. Initial drilling will test for concealed porphyry intrusions and evaluate its potential as an additional mineralized centre within the Mocoa project.

Engagement of Rose & Company Holdings LLC for investor relations services

Copper Giant is also pleased to announce that subject to approval of the TSX Venture Exchange, it has signed a services agreement with Rose & Company (Rose & Co.), a New York-based strategic advisory firm, to provide professional investor relations services effective April 8, 2026, in compliance with TSX Venture Exchange policies and applicable legislation.

Rose & Co. brings decades of capital markets experience from leading Wall Street institutions including Dahlman Rose & Company, Barclays, Morgan Stanley and Deutsche Bank. Under the agreement, Rose & Co. will provide institutional investor outreach, non-deal road show coordination and continuing investor engagement services.

Under the agreement, the company will pay Rose & Co. a quarterly retainer of $50,000 (U.S.) (increasing by 5 per cent after the first year), payable from cash on hand. The agreement has an initial 12-month term. The agreement shall automatically renew for a successive 12-month period unless terminated by either party in writing prior to the 60 days of the termination date. Rose & Co. and its principals will receive no equity compensation or other incentives. The parties are at arm's length; Rose & Co. and its principals do not hold any securities in the company and have no other interest, direct or indirect.

Qualified person and technical notes

Edwin Naranjo Sierra, vice-president of exploration for Copper Giant, is the designated qualified person within the meaning of National Instrument 43-101 -- Standards of Disclosure for Mineral Projects 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.

Copper Giant operates according to a rigorous quality assurance and quality control (QA/QC) protocol consistent with industry best practices. For surface samples, 2.5 kilograms of material is taken on each outcrop using chip or channel techniques. Samples are taken by well-trained field helpers supervised by the geologist of the company. 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 continuing 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.

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.

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.)/pound and Mo -- $20.00 (U.S.)/lb, and metal recoveries of 90 per cent Cu and 95 per cent Mo.

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 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.