Why Invest in ATEX?

Significant and growing Mineral Resource, total of 2 billion tonnes of Cu-Au grading 0.78% CuEq*

Phase V drill program has already delivered the highest-grade intersections to date, with momentum to continue in Phase VI

B2B zone holes ATXD23A (152m grading >2% CuEq)** and ATXD26 (68m grading >2% CuEq)*** present optionality and a conceptual high-grade underground starter mine closer to surface

Metallurgical work supports up to 95% Cu / 97% Au recoveries at a coarser grind, and a clean marketable concentrate with negligible deleterious elements

Scalability with mineralization +1.4 km along strike, +1 km wide, and open in all directions

100% in Chile, district still largely untested with additional porphyries likely in hiding

Agnico Eagle Mines is the largest cornerstone investor investing C$55 million

* For further information, please see press release from September 23, 2025 and also available under the ATEX Resources SEDAR+ profile.

**ATXD26 intersected 68m grading 2.02% CuEq (1.39% Cu, 0.6 g/t Au, 3.81 g/t Ag and 473 g/t Mo). See news release dated May 15, 2024.

***ATXD23A intersected 152.0 metres of 2.03% CuEq (1.52% Cu, 0.75 g/t Au, 0.83 g/t Ag and 40.93 g/t Mo). See news release dated January 23, 2025.