Slide 1: Valeriano Copper-Gold Project Conference Call – 2025 MRE and Strategic Surface Rights Acquisition
VALERIANO COPPER-GOLD PROJECT Conference Call – 2025 MRE and Strategic Surface Rights Acquisition The Largest and Most Cost-Effective Discovery in Chile in a Decade September 24, 2025 TSXV: ATX | OTCQB: ATXRF
Slide 2: Cautionary Statements
Cautionary Statements LEGAL DISCLAIMER FORWARD-LOOKING STATEMENTS AND INFORMATION The information contained in this presentation and other information furnished by or on behalf of ATEX Resources Inc. (“ATEX”) is confidential and has This presentation may contain statements that constitute “forward-l
Slide 3: Call Agenda
Call Agenda • 2025 Mineral Resource update • Strategic surface rights acquisition Presented by: Ben Pullinger, President and CEO VALERIANO: Defining a Copper Gold Giant in Chile TSXV: ATX | OTCQB: ATXRF 3
Slide 4: Following the Giants Along the Porphyry Superhighway
Following the Giants Along the Porphyry Superhighway Lundin / JX Metals Copiapó CASERONES ATEX owns 100% of the Valeriano Project PERU NGEx LOS HELADOS VICUÑA DISTRICT Teck / Newmont Discovery Early 2000s Located in the Huasco Province within the Huasco RELINCHO NGEx LUNAHUASI Lundin / BHP Atacama R
Slide 5: 2025 Valeriano Mineral Resource Update
2025 Valeriano Mineral Resource Update Valeriano stands as Chile’s largest copper discovery of the past decade, rapidly advancing into a globally ranked copper-gold deposit in just four years, with its full potential still to be defined 2025 MRE Improvements: • Increased Confidence – 130% increase i
Slide 6: 2025 Mineral Resource Estimate – Size and Grade
2025 Mineral Resource Estimate – Size and Grade 475 Mt at 1.5 Bt at 2025 MRE by $ 0.88% CuEq 0.75% CuEq Silver, 2% Molybdenum, 5% Cu 6.1 Blbs 16.7 Blbs Gold, 28% Copper 0.58% Cu 0.50% Cu Copper, 65% Indicated Inferred Au 3.8 Moz 0.25 g/t Au 9.9 Moz 0.20 g/t Au Gold 2023 MRE by $ Ag 21.2 Moz 56.1 Moz
Slide 7: B2B Zone – Still Growing with Potential for New Discoveries
B2B Zone – Still Growing with Potential for New Discoveries 28.4 Mt at 2.6 Mt at 1.36% CuEq 1.05% CuEq Cu 0.6 Blbs 42 Mlbs Copper 0.95% Cu 0.74% Cu Indicated Inferred Au 0.3 Moz 0.33 g/t Au 23 koz 0.28 g/t Au Gold Ag 1.8 Moz 144 koz Silver 1.98 g/t Ag 1.74 g/t Ag High-grade and open for 0.1 kt expan
Slide 8: High-Grade Porphyry Core – Continuing to Extend the Trend
High-Grade Porphyry Core – Continuing to Extend the Trend 118 Mt at 161 Mt at 1.07% CuEq 1.01% CuEq Cu 1.8 Blbs 2.2 Blbs Copper 0.68% Cu 0.63% Cu Indicated Inferred Au 1.3 Moz 0.35 g/t Au 1.7 Moz 0.34 g/t Au Gold Ag 6.6 Moz 9.7 Moz Silver 1.74 g/t Ag 1.88 g/t Ag 1,000m in defined length Mo 5.1 kt 6.
Slide 9: Valeriano Mineral Resource Statement – September 2025
Valeriano Mineral Resource Statement – September 2025 Grade Contained Metal Tonnes Category Cut-off Grade Cu Au Ag Mo CuEq AuEq Cu Au Ag Mo CuEq AuEq (Mt) (%) (g/t) (g/t) (g/t) (%) (g/t) (Mt) (koz) (koz) (kt) (Mt) (koz) Measured - - - - - - - - - - - - - Indicated - - - - - - - - - - - - - Gold Oxid
Slide 10: 2025 MRE – Significant Increase in Value and Confidence
2025 MRE – Significant Increase in Value and Confidence 2023 MRE1 2025 MRE Change Copper-Gold Sulphide Copper-Gold Sulphide Inferred Indicated + Inferred Tonnes (Bt) 1.4 475 Mt + 1.5 Bt 37% CuEq Grade 0.67% 0.88% / 0.75% Metres Drilled 22,000 51,000 132% Recoveries – Cu / Au 90% Cu / 70% Au 95% Cu /
Slide 11: Valeriano – Efficient Value Creation
Valeriano – Efficient Value Creation 8.6 Mt / JOSEMARIA 81 t/m 106,504m tonnes per metre (t/m) 15.2 Mt / LOS HELADOS 162 t/m 93,750m 47.7 Mt / FILO 238 t/m 200,486m 15.5 Mt / VALERIANO 303 t/m 51,000m 0 50 100 150 200 250 300 350 Notes: Metric tonnes are shown on a copper equivalent basis as per pub
Slide 12: Valeriano – Largest Cu/Au Discovery in Chile Over Past Decade
Valeriano – Largest Cu/Au Discovery in Chile Over Past Decade Global Copper Discoveries 2013 – 2024 Chilean Copper Discoveries 2013 – 2024 14.00 13.00 30 12.00 Filo Del Sol 11.00 25 Valeriano 10.00 9.00 20 Copper (Mt) Kamoa Copper (Mt) 8.00 - Kakula 7.00 15 6.00 5.00 10 Valeriano 4.00 3.00 5 2.00 1.
Slide 13: Valeriano – An Emerging New Major Discovery Globally
Valeriano – An Emerging New Major Discovery Globally Co. and Discovery Year Filo Del Sol (2016) Largest Copper Discoveries Since 2014 Kamoa-Kakula (2014) Valeriano (2022) 7.5 2.75 Western Foreland (2017) Encierro (2014) Cachorro (2015) Winu (2017) Copper (Mt) La Huifa (2014) Tatogga (Saddle) (2017)
Slide 14: Valeriano is High-Grade with Exceptional Cu-Au Recoveries
Valeriano is High-Grade with Exceptional Cu-Au Recoveries Reported CuEq Resource Grade vs. Copper Recovery1,2 100% Valeriano3 95% Copper Recovery (%) 90% 85% 80% 75% Bubble Size Represents Total CuEq (t) Resource 70% - 0.10% 0.20% 0.30% 0.40% 0.50% 0.60% 0.70% 0.80% 0.90% 1.00% Resource Grade (%) 1
Slide 15: Valeriano Delivers Industry Leading Discovery Costs
Valeriano Delivers Industry Leading Discovery Costs • Valeriano has advanced rapidly from geological curiosity to a globally significant, generational discovery while achieving industry leading discovery costs (cents per pound) and generating significant value for shareholders • Global discovery cos
Slide 16: Valeriano has Significant Technical and Regional Advantages
Valeriano has Significant Technical and Regional Advantages • 100% in Chile • Road access to the project • Potential for lateral EL ENCIERRO access from adjacent VALERIANO valley at 3,800 masl 4,400 masl • High-grade B2B Zone 3,800 masl 600m closer to surface with 3,650 masl starter mine potential 1
Slide 17: 2025 Valeriano Mineral Resource Update
2025 Valeriano Mineral Resource Update 2025 2023 Change Drilled 51,000 22,000 130% Metres (m) Metres 14,400 2,500 420% Saved (m) Metres Sampled 51,500 20,000 160% (m) CuEq (%) >1.2 MRE (Mt) 1,986 1,445 37% 2025 MRE >0.8 B2B Block Model High-Grade >0.5 31 - - Breccia (Mt) >0.3 High-Grade >0.1 279 200
Slide 18: B2B Zone Expansion Potential
B2B Zone Expansion Potential B2B Zone remains open along strike and along other potential structural orientations Priorities for B2B: B2B • Extension drilling along strike Expansion Breccia Targets NO CORE RECOVERY B2B • Infill and definition of the high- grade core Navigation IP/EP • Testing of oth
Slide 19: Consistency and High-Grade with Significant Exploration Upside
Consistency and High-Grade with Significant Exploration Upside N S N S Facing East Facing East >0.15% CuEq >0.8% CuEq RPEEE 0.3% Cu CuEq (%) Grade-Shell >1.2 >0.8 RPEEE 0.3% Cu >0.5 Grade-Shell B2B >0.3 B2B OPEN >0.1 OPEN HG Core HG Core OPEN OPEN OPEN OPEN Porphyry ~1Bn tonnes Porphyry ~1Bn tonnes
Slide 20: High-Grade Domains Remain Open for Further Expansion
High-Grade Domains Remain Open for Further Expansion B3B Target CuEq (%) >1.2 B2B >0.8 Porphyry >0.5 >0.3 >0.1 RPEEE 0.3% Cu HG Core RPEEE Grade-Shell 0.3% Cu Grade-Shell 2025 MRE 0.3% Cu Extents Breccia Targets - Untested 3,100masl Level Plan – B2B Horizon 2,600masl Level Plan VALERIANO COPPER-GOLD
Slide 21: Phase VI – Expansion and Derisking with Discovery Potential
Phase VI – Expansion and Derisking with Discovery Potential ~1 km of underexplored ground between northern porphyry TORRENTE Codelco intersection and ATEX’s northern boundary Priorities for Phase VI include: • B2B expansion and delineation NORTH BLOCK ATEX • Test new breccia targets to the east and
Slide 22: Strategic Surface Rights Acquisition
Strategic Surface Rights Acquisition VALERIANO COPPER-GOLD PROJECT: A New Giant High-Grade Discovery in Chile TSXV: ATX | OTCQB: ATXRF 22
Slide 23: Acquisition of 14,550 Hectares Surface Rights Package
Acquisition of 14,550 Hectares Surface Rights Package MULTI USE WATER RIGHTS Strategic Benefits EL ENCIERRO • Unique opportunity to acquire and control land underlying SURFACE RIGHTS (Antofagasta) our physical assets and infrastructure ATEX Resources Inc. 522 Mt @ 0.79% CuEq CODELCO El Torrente - Dr
Slide 24: ATEX Resources Inc.
ATEX Resources Inc. 1001 – 360 Bay St., Toronto, ON, M5H 2V6 www.atexresources.com Ben Pullinger President and CEO bpullinger@atexresources.com Aman Atwal VP, Business Development and Investor Relations aatwal@atexresources.com VALERIANO COPPER-GOLD PROJECT: A New Giant High-Grade Discovery in Chile
Slide 25: Notes on Reported Exploration Results and QAQC Procedures
Notes on Reported Exploration Results and QAQC Procedures Notes on Drill Results • All intervals are reported as core lengths as the true lengths of the intervals are unknown at this time. • Copper Equivalent (CuEq) is calculated assuming US$ 3.15/lb Cu, US$ 1,800/oz Au, US$ 23/oz Ag, and US$ 20/lb