Copper Giant Resources Corp. - Updated Mocoa Inferred Mineral Resource of 1.1 Billion Tonnes at 0.51% CuEq* in Southern Colombia

Overview

Copper Giant Resources Corp. has reported an updated Inferred Mineral Resource Estimate for its 100%-owned Mocoa copper-molybdenum porphyry project in southern Colombia. The 2025 Mocoa MRE comprises Inferred Mineral Resources of 12.7 billion pounds (Blbs) copper-equivalent (CuEq*) at an average grade of 0.51% CuEq*, including 7.6 Blbs of copper at 0.31% Cu and 1.0 Blbs of molybdenum at 0.039% Mo, within a total of 1,120 million tonnes (Mt) at a 0.25% CuEq* cutoff. The updated estimate incorporates 9,525 metres of drilling completed since the 2022 MRE, updated geological interpretation, new metallurgical data, and revised long-term copper and molybdenum price assumptions. Two drill rigs are currently operating as part of an ongoing 14,000 metre drill program at Mocoa.

Key Highlights

• 2025 Mocoa Inferred Mineral Resource: 1,120 Mt at 0.51% CuEq*, including 0.31% Cu and 0.039% Mo, containing 12.7 Blbs CuEq*, 7.6 Blbs Cu, and 1.0 Blbs Mo at a 0.25% CuEq* cutoff.
• Sensitivity table highlights a high-grade core of 190 Mt at 0.94% CuEq (0.53% Cu, 0.077% Mo), containing 3.9 Blbs CuEq, 2.2 Blbs Cu, and 0.3 Blbs Mo at a 0.70% CuEq cutoff.
• Compared with the 2022 MRE at the same 0.25% CuEq* cutoff, the updated resource of 1.12 billion tonnes at 0.51% CuEq* represents a reported +76% increase in tonnage, +14% increase in CuEq* grade, and +101% increase in contained CuEq* metal.
• 9,525 metres drilled since the 2022 MRE added an average of 671,000 pounds of CuEq* per metre drilled, with all drilling completed around the margins of the previous model.
• The resource is constrained within a 0.65 revenue factor pit shell using long-term prices of US$4.0/lb copper and US$20.0/lb molybdenum and still exceeds one billion tonnes, placing Mocoa in a small peer group of large, high-grade and near-surface copper deposits globally.
• Mocoa now hosts over one billion pounds of molybdenum and is described as being among the largest undeveloped molybdenum systems globally.
• The company states that the entire resource and the constraining shell lie outside any forestry reserve and outside any community.
• Mocoa remains open laterally and at depth, with several nearby porphyry targets and satellite targets across a district-scale land package of over 1,324 square kilometres.

Strategic / Operational Context

The updated MRE is part of Copper Giant's ongoing 14,000 metre drill program at Mocoa, with drilling to date focused around the edges of the previous resource model. Management and technical personnel describe Mocoa as a rare, long-lived, multi-phase porphyry copper-molybdenum system where drilling routinely delivers several hundred to over a thousand metres of continuous mineralization, complemented by high-grade intervals. The company highlights that large portions of the optimized pit shell remain completely undrilled and are currently classified as waste, presenting immediate opportunities for ongoing drilling as the system continues to be evaluated within a broader Jurassic porphyry cluster.

Resources & Financials

• 2025 Mocoa Inferred Mineral Resource (effective November 18, 2025), pit-constrained at a 0.25% CuEq* cutoff:
  • 1,120 Mt at 0.51% CuEq*, 0.31% Cu, 0.039% Mo, containing 12.7 Blbs CuEq*, 7.6 Blbs Cu, and 1.0 Blbs Mo.
• Sensitivity of Inferred Mineral Resources across reported CuEq* cutoffs:
  • 0.10% CuEq cutoff: 1,553 Mt at 0.42% CuEq, 0.25% Cu, 0.031% Mo, containing 14.4 Blbs CuEq, 8.7 Blbs Cu, 1.1 Blbs Mo.
  • 0.20% CuEq cutoff: 1,268 Mt at 0.48% CuEq, 0.29% Cu, 0.036% Mo, containing 13.4 Blbs CuEq, 8.1 Blbs Cu, 1.0 Blbs Mo.
  • 0.30% CuEq cutoff: 972 Mt at 0.55% CuEq, 0.33% Cu, 0.042% Mo, containing 11.8 Blbs CuEq, 7.0 Blbs Cu, 0.9 Blbs Mo.
  • 0.40% CuEq cutoff: 674 Mt at 0.64% CuEq, 0.38% Cu, 0.050% Mo, containing 9.5 Blbs CuEq, 5.6 Blbs Cu, 0.7 Blbs Mo.
  • 0.50% CuEq cutoff: 441 Mt at 0.74% CuEq, 0.43% Cu, 0.059% Mo, containing 7.2 Blbs CuEq, 4.2 Blbs Cu, 0.6 Blbs Mo.
  • 0.60% CuEq cutoff: 287 Mt at 0.84% CuEq, 0.48% Cu, 0.068% Mo, containing 5.3 Blbs CuEq, 3.1 Blbs Cu, 0.4 Blbs Mo.
  • 0.70% CuEq cutoff: 190 Mt at 0.94% CuEq, 0.53% Cu, 0.077% Mo, containing 3.9 Blbs CuEq, 2.2 Blbs Cu, 0.3 Blbs Mo.
• Economic assumptions used in the MRE include metal prices of US$4.00/lb Cu and US$20.00/lb Mo, process recoveries of 90% for Cu and 95% for Mo, a US$10/t processing cost, G&A costs of US$1.00/t, and a 3% NSR royalty.
• Constraining pit optimization parameters include a US$2.5/t mining cost for both mineralized and waste material and 45° slopes, with reported pit-constrained Mineral Resources based on a 0.25% CuEq* cutoff and a conceptual 0.65 revenue factor pit shell.
• A supporting NI 43-101 Technical Report will be filed on SEDAR+ and made available on the company's website within 45 days from the date of the news release.
• The company reiterates that Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability and notes that the estimate may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues.

What to Watch Next

• Filing of the NI 43-101 Technical Report supporting the updated Mocoa MRE on SEDAR+ and on the company website within 45 days of the news release date.
• Results and updates from the ongoing 14,000 metre drill program at Mocoa, with two rigs operating at full capacity and drilling focused on the margins of the resource and within undrilled portions of the optimized pit shell.
• Further evaluation of multiple untested nearby porphyry targets and satellite targets across the broader district-scale land package as the company continues to advance and refine the Mocoa resource.

Commentary

The updated Mocoa MRE shows material growth in tonnage, grade, and contained CuEq* metal relative to the 2022 MRE at the same cutoff, while retaining a near-surface, pit-constrained geometry, which is relevant for potential future development scenarios. The combination of a defined high-grade core, large-scale tonnage, and more than one billion pounds of molybdenum positions Mocoa as a significant copper-molybdenum system within the northern Andes. Ongoing drilling around the margins of the current model, together with undrilled areas inside the pit shell and multiple satellite targets, suggests that the resource is still in an early growth phase within a broader porphyry district.

NI 43-101 Notes

1. The MRE was completed by Kevin Hon, B.Sc., P.Geo., Senior Resource Geologist, and Warren Black, M.Sc., P.Geo., Senior Consultant: Mineral Resources and Geostatistics, both of APEX. Mr. Hon and Mr. Black are independent Qualified Persons, as defined by NI 43-101, and are responsible for the completion of the Mineral Resource Estimate, with an effective date of November 18, 2025. Michael Dufresne, M.Sc., P.Geo., President & CEO of APEX, completed a peer review of the estimate.
2. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
3. The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues.
4. The Inferred Mineral Resource in this estimate has a lower level of confidence than that applied to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that the majority of the Inferred Mineral Resource could potentially be upgraded to an Indicated Mineral Resource with continued exploration.
5. The Mineral Resources were estimated in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (CIM), CIM Standards on Mineral Resources and Reserves, Definitions (2014) and Best Practices Guidelines (2019) prepared by the CIM Standing Committee on Reserve Definitions and adopted by the CIM Council.
6. Economic assumptions used include US$4.00/lb Cu, US$20.00/lb Mo, process recoveries of 90% for Cu and 95% for Mo, a US$10/t processing cost, G&A costs of US$1.00/t, and a 3% NSR royalty.
7. CuEq* values are calculated using a Cu-to-Mo value ratio of 1:5.278, incorporating both metal prices and metallurgical recoveries.
8. The constraining pit optimization parameters include a US$2.5/t mining cost for both mineralized and waste material and 45° slopes. Pit-constrained Mineral Resources are reported at a cutoff of 0.25% CuEq*.

About Copper Giant

Copper Giant Resources Corp. 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 Neighbor philosophy, Copper Giant is committed to creating enduring values for all stakeholders and playing a meaningful role in the global energy transition.

Read full press release here.

ArcStone Financial Pulse Team

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