Great Southern Copper (GSCU) Corporate presentation summary

Investment highlights

• Especularita is a large copper-gold-silver project in Chile with advanced high-grade discoveries and significant exploration potential.

• Multiple targets include Cerro Negro (high-grade Cu-Ag), Viuda (porphyry Au-Cu), and the giant La Colorada lithocap, all within a 12,100 ha land package.

• Project is located in a district with over 85Mt contained copper within 50km, near major mines and infrastructure.

• Aggressive exploration strategy with two discoveries in 2025 and a defined drilling pipeline for 2026.

• 100% ownership, supportive government, and experienced management team.

Project details and exploration results

• Cerro Negro's Mostaza mine shows high-grade Cu-Ag mineralisation, open along trend and at depth, with resource drilling and metallurgy studies ongoing.

• Drilling at Mostaza returned intercepts such as 20m @ 3.31% Cu & 269.9 g/t Ag and 21m @ 2.88% Cu & 246.7 g/t Ag.

• Viuda prospect revealed Maricunga-style porphyry gold mineralisation, with broad low-grade gold zones and technical evidence for a large system.

• La Colorada lithocap is a giant, undrilled alteration system with potential to conceal major porphyry copper deposits.

• 2026 work plan includes 5,000m diamond drilling and 3,000m RC drilling at Mostaza, plus deep geophysics and mapping.

District and pipeline opportunities

• Especularita sits in a prolific copper district, surrounded by major mines and advanced projects such as Los Pelambres, El Pachon, and Altar.

• Multiple untested targets include IOCG, porphyry, and IRCG prospects, with several drill-ready for 2026.

• Project drivers include maiden resource at Mostaza, metallurgy results, expansion drilling, and continued gold success at Viuda.

• Corporate drivers include copper market dynamics and improved capital raising conditions.

• Six drill-ready targets and a robust pipeline position the project for continuous news flow.