Slide 1: Committed to Creating Sustainable Value
COMMITTED TO CREATING SUSTAINABLE VALUE Corporate Presentation August 2026 TSX-V: ATY | OTC: ATCMF aticomining.com
Slide 2: Cautionary Notes, Non-GAAP Measures and QP
CAUTIONARY NOTES, NON-GAAP MEASURES AND QP Certain statements in this presentation constitute forward-looking statements and as such are based on an assumed set of economic conditions and courses of action. These include estimates of future production levels, expectations regarding mine production c
Slide 3: Building on Success
BUILDING ON SUCCESS Proven building blocks to increase shareholder value STRATEGY § Acquire small to medium scale Build a leading mid-tier producer through organic advanced-stage projects growth and disciplined acquisitions, focused on M&A high margin operations in Latin America. OPPORTUNITIES § Pot
Slide 4: Corporate Overview
CORPORATE OVERVIEW Tight share structure OWNERSHIP TSX.V: ATY | OTCQX: ATCMF RETAIL 46% RECENT TRADING INSTITUTIONS CLOSING PRICE 52-WEEK AVERAGE DAILY 35% (24/08/2026) RANGE VOLUME MANAGEMENT/ Ingalls & Snyder DIRECTORS $0.25 $0.12 - $0.42 100 K NVE/Dundee Gold 2000 19% SHARE PRICE $0.50 CAPITAL ST
Slide 5: Project Locations
PROJECT LOCATIONS Assets with organic growth potential EL ROBLE MINE | COLOMBIA COPPER-GOLD MINE LA PLATA PROJECT | ECUADOR GOLD-COPPER-ZINC-SILVER VMS PROJECT § Operating Mine • Development Project 5 TSX-V: ATY | OTCQX: ATCMF
Slide 6: El Roble Mine, Colombia
EL ROBLE MINE, COLOMBIA Flagship asset with organic growth potential LOCATION OPERATIONAL CAPACITY Carmen de Atrato, 1,000 tpd Colombia underground mine OWNERSHIP PROJECTED PRODUCTION 90% Cu: ~10 Mlb /year Au: ~8,500 oz /year PROPERTY 6,355 hectares, PROJECTED C1 CASH COST ($US)1 Mafic-type VMS $2.0
Slide 7: Financial Performance
FINANCIAL PERFORMANCE Trailing 4 reported quarters (Q3 2025 to Q2 2026) Financial Highlights Operational Highlights CASH FLOW FROM OPS $13.1M PRODUCTION *C1 COST 9.0M lbs Cu & 8.0K oz Au $2.23/lbs *AISC $4.44/lbs **FREE CASH FLOW $7.0M RESERVES THROUGHPUT ~2.5 Years 235K Tonnes *AISC MARGIN 23% *C1
Slide 8: Exploration
EXPLORATION 8 TSX-V: ATY | OTCQX: ATCMF
Slide 9: Exploration: Mine Vicinity
El Roble Mine, Colombia EXPLORATION Mine Vicinity – Potential to increase resources at the mine MS Surface Outcrop ` Main Body North Bodies In 2023-24, discovered 3 additional years of Mine Life: *M&I 881Kt @ 3.40% Cu and 2.98 g/t Au 2000m Adit LEGEND Maximus Massive sulphide (MS) Mine workings Zeus
Slide 10: Exploration: Regional Potential
El Roble Mine, Colombia EXPLORATION La Calera Norte Regional – Potential to find additional VMS Mineralization § 6,355 contiguous hectare property with La Calera intermittent exploration. Geochemical Targets § Atico has identified over 21 perspective drill La Favorita target areas. Archie El Roble §
Slide 11: La Plata, Ecuador
LA PLATA, ECUADOR Atico’s next development stage project LOCATION PROPERTY EXPLORATION Near Quito, Ecuador 2,300 hectare land package, 9 priority exploration targets Mafic-type VMS OWNERSHIP COMMODITIES DEVELOPMENT STAGE 100% Au, Cu, Zn, Ag Definitive Feasibility Study(2024) Final Stage of Obtaining
Slide 12: La Plata Definitive Feasibility Study Snapshot
LA PLATA, ECUADOR Definitive Feasibility Study Snapshot INITIAL CAPEX PLANNED OPERATIONAL CAPACITY LA PLATA VMS PROJECT US$91 M 850 tpd underground mine NPV5(after tax) PLANNED ANNUAL PRODUCTION US$93 M Cu: 10 Mlb Zn: 13 Mlb Au: 16 Koz Ag: 227 Koz NPV (M $US) & Copper Price ($ / lb) IRR(after tax) E
Slide 13: La Plata Projected Timeline to Construction
LA PLATA, ECUADOR Projected Timeline to Construction 2025 2026 Q4 Q1 Q2 Q3 Q4 Environmental Impact Assessment Base & Detailed Engineering Metallurgical Optimization Environmental License Change of Status to Exploitation Construction Permit Water Use Permit Tailings Dam Approval Other Auxiliary Permi
Slide 14: La Plata VMS Project: Probable Reserves
LA PLATA VMS PROJECT, ECUADOR High grade polymetallic project – Probable Reserves N 2.5Mt | 3.51% CuEq Au 2.3 g/t Ag 30 g/t Cu 1.6% Zn 2.2% LEGEND Massive sulphide (MS) Planned mine workings 14 TSX-V: ATY | OTCQX: ATCMF
Slide 15: La Plata Prospective VMS
LA PLATA PROSPECTIVE VMS Deposit remains open at depth and along strike Cross section view N 500M LEGEND Massive sulphide (MS) Planned mine workings Prospective areas 15 TSX-V: ATY | OTCQX: ATCMF
Slide 16: Significant Regional Exploration Potential
La Plata VMS Project, Ecuador SIGNIFICANT REGIONAL EXPLORATION POTENTIAL § VMS deposits tend to form in clusters which reinforces the prospect of further nearby deposits § +9 km of favorable geology along strike § Planned target areas in close proximity to the north of the known deposit § Q. Romero:
Slide 17: Mining Responsibly
MINING RESPONSIBLY 17 TSX-V: ATY | OTCQX: ATCMF
Slide 18: Investment Highlights
INVESTMENT HIGHLIGHTS Proven team Industry expertise In production and of mine developers and Regional network generating cash flow and mine operators at El Roble mine Focused on Underexplored developing and operating Upside at La Plata and El Roble La Plata project, next in line mine’s underexplore
Slide 19: Corporate Development
CORPORATE DEVELOPMENT Igor Dutina idutina@aticomining.com CORPORATE OFFICE Suite 501 – 543 Granville St. Vancouver BC V6C 1X8 T: +1.604.633.9022 TSX-V: ATY | OTCQX: ATCMF aticomining.com
Slide 20: Appendix
APPENDIX 20 TSX-V: ATY | OTCQX: ATCMF
Slide 21: El Roble Resource Estimate
APPENDIX EL ROBLE RESOURCE ESTIMATE Contained Metal Tonnes CuEq Cu Au Cu Lbs Au oz (000) (%) (%) (g/t) (000) (000) Proven + Probable Reserves 828 3.47 2.49 2.20 41,997 36 Measured + Indicated Resources 881 4.69 3.40 2.98 66,032 85 Note: 1. Mineral Resources and Mineral Reserves are as defined by CIM
Slide 22: La Plata VMS Mineral Reserve and Resource Estimate
APPENDIX LA PLATA VMS Mineral Reserve and Resource Estimate Maiden Mineral Reserve Estimate as of July 5th, 2023 Contained Metal Tonnes CuEq Au Ag Cu Pb Zn Au Ag Cu Pb Zn Reserve Category (kt) (%) (g/t) (g/t) (%) (%) (%) (Koz) (Moz) (Mlbs) (Mlbs) (Mlbs) Probable 2,510 3.51 2.28 30.41 1.59 0.36 2.18
Slide 23: Management Team
APPENDIX MANAGEMENT TEAM Successful track record in Latin America Fernando E. Ganoza B.Sc. Engineering, MBA Chief Executive Officer and Director Fernando is a Mining Engineer with over 25 years of management experience in Latin America including key roles in the development of mines in Peru and Mexi
Slide 24: Directors
APPENDIX DIRECTORS Successful track record in Latin America Luis D. Ganoza Jonathan Goodman Mario Szotlender Fernando E. Ganoza Luis F. Sáenz Jorge R. Ganoza B.Sc. Engineering, MBA B.Sc. Engineering, MBA B.Sc. Engineering B.Sc. Engineering, Director Director MBA, M.Sc Director Chief Executive VP Ope