Announcement • Aug 28

Copper Giant Resources Corp. Reports Assay Results From In-Fill Holes MD-068 And MD-070 At Mocoa Copper-Molybdenum Porphyry Project

Copper Giant Resources Corp. reported assay results from in-fill holes MD-068 and MD-070 at its flagship Mocoa copper-molybdenum porphyry project in Putumayo, Colombia. MD-068, drilled beneath the vertical shallower holes completed by Ingeominas, returned a near-surface high-grade zone with 157 metres of 0.69% CuEq (0.44% Cu and 0.048% Mo) from 145 metres and deeper zone below the past holes with 154 metres of 0.54% CuEq (0.32% Cu and 0.041% Mo) from 526 metres. MD-070, an in-fill daughter hole, intersected 771 metres of continuous mineralization grading 0.54% CuEq (0.33% Cu and 0.039% Mo), including a higher-grade core of 102 metres of 0.87% CuEq (0.54% Cu and 0.063% Mo). The pattern of the 2026 program keeps expanding mineralization and reproducing the grade model that will underpin the anticipated upcoming Preliminary Economic Assessment (PEA). MD-068 extends mineralization below the historic drilling: 154 metres of 0.54% CuEq (0.32% Cu and 0.041% Mo) from 526 metres. Better grade at depth: alteration and veining in MD-068 intensify downhole toward the assemblages that form closest to the heat source of a porphyry system. MD-070 reproduces the resource model at infill spacing: 771 metres of continuous mineralization grading 0.54% CuEq (0.33% Cu and 0.039% Mo), including a higher-grade core of 102 metres of 0.87% CuEq (0.54% Cu and 0.063% Mo) from 396 metres. It is the second daughter hole from the MD-064 platform, which has now produced close to 6,000 metres of drilling in three directions from one pad, reducing drill-rig mobilization. Near-term catalyst -- the Mocoa PEA: all workstreams are advancing on plan and the Company remains on track to deliver the PEA in the fourth quarter of 2026. Drilling continues at La Estrella: 2,170 metres completed to date; assays pending. Copper Giant uses directional drilling to steer multiple daughter holes from a single drill pad, testing several targets without building new pads or roads in Mocoa's steep terrain. This delivers more geological information per metre at lower cost and with less surface disturbance and accelerates the conversion of resources from Inferred to Indicated ahead of the PEA. Daughter holes are drilled to a planned length and are typically still in mineralization when completed, by design. Hole MD-068 was completed as a directional daughter hole from mother hole MD-067, kicked off at 145 metres and steered east-southeast to test the southeast of the Mocoa system at depth. This sector had previously been tested only by the vertical holes completed by Ingeominas (M16, M18 and M20), which bottomed at approximately 400 metres. Those holes were drilled with the technology of their day and stopped well above the depths reached here, leaving the deeper part of the system in this corner of the deposit untested. The hole was drilled through the same quartz-diorite and dacite porphyries that host the deposit elsewhere at Mocoa. What changes with depth is the alteration. The upper part of the hole carries the sericite-rich alteration typical of the outer parts of a porphyry system; below about 300 metres the rock passes into potassic alteration, the assemblage that forms closest to the heat source that drives these deposits. Veining follows the same trend, becoming denser downhole and adding the high-temperature quartz and biotite-magnetite veins that mark the core of a porphyry. MD-068 was drilling toward the center of a system rather than away from one, which is why grade improves with depth here instead of fading. MD-068 returned a near-surface high-grade interval of 157 metres of 0.69% CuEq (0.44% Cu and 0.048% Mo) from 145 metres and a second deeper (below the past holes) interval of 154 metres of 0.54% CuEq (0.32% Cu and 0.041% Mo) from 526 metres, including 67 metres of 0.60% CuEq (0.37% Cu and 0.043% Mo). Logged copper and molybdenum sulfide contents are higher in the deeper interval than in the shallower one, in step with the change in alteration and veining. Mother hole MD-067 carries the assays from surface to 145 metres and returned 145 metres of 0.15% CuEq (0.12% Cu and 0.005% Mo), including 28 metres of 0.42% CuEq (0.38% Cu and 0.007% Mo) from 117 metres. The first 117 metres of the hole are weathered, leached rock -- the natural cap that sits above a the Mocoa porphyry deposit at surface. The 28-metre interval immediately beneath that cap carries its copper mainly as chalcocite rather than chalcopyrite, the signature of a supergene blanket where copper leached from above has been redeposited. Fresh sulfide mineralization begins below 138 metres. Assays for the remainder of MD-067, which was completed to 756 metres, are pending. Hole MD-070 was completed as a directional daughter hole from mother hole MD-064, kicked off at 211 metres and steered due west. It is the second daughter hole drilled from that platform, after MD-066; between them, the three holes have delivered close to 6,000 metres of drilling in three separate directions from one pad, without a new road or a new platform. MD-070 forms part of the Company's infill drilling and resource-conversion strategy within the current MRE footprint and was designed to test the grade and continuity of the resource model at tighter drill spacing, the same model that will underpin the upcoming PEA. The hole is hosted almost entirely in dacite porphyry and passes into hydrothermal breccia over its lowest 150 metres. Alteration through the hole is sericite-rich with pervasive silica, the style that forms above and outboard of a porphyry core, which is consistent with where MD-070 sits in the deposit. MD-070 returned broad and continuous copper-molybdenum mineralization over essentially its entire assayed length. The hole intersected 771 metres of 0.54% CuEq (0.33% Cu and 0.039% Mo) from 211 metres downhole, including 698 metres of 0.56% CuEq (0.35% Cu and 0.041% Mo), 313 metres of 0.71% CuEq (0.46% Cu and 0.047% Mo) and 214 metres of 0.77% CuEq (0.52% Cu and 0.048% Mo), with a higher-grade core of 102 metres of 0.87% CuEq (0.54% Cu and 0.063% Mo) from 396 metres. That core is intensely veined (B-, BMQ and C-type). These grades are consistent with, and locally exceed, the values modelled by the current MRE block model, indicating that the resource model is effectively predicting both grade distribution and mineralized continuity in Mocoa. A further interval of 53 metres of 0.83% CuEq (0.60% Cu and 0.045% Mo) was returned from 782 metres, below the principal interval and in ground that passes into the hydrothermal breccia, extending the third breccia corridor recently announced. The mineralization reported in MD-068 below the level at which the historic drilling ended lies outside the current resource footprint and is not included in the current Mineral Resource Estimate.

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