Selkirk Copper Mines Inc. · TSXV:SCMI
Selkirk Copper Mines — Investor Presentation (October 2026)
37 slides from Selkirk Copper Mines's investor presentation, October 2026
Slide 1: Yukon's Next Copper Producer: PEA Update
Yukon’s Next Copper Producer Preliminary Economic Assessment (PEA) Update Corporate Presentation October 2026 TSX-V: SCMI | OTCQX: SKRKF | FRA: IO20 selkirkcopper.com
Slide 2: Forward Looking Statement, Cautionary Notes and Technical Disclosure
Forward Looking Statement, Cautionary Notes and Technical Disclosure Disclaimer Recipients of this corporate presentation (“Presentation”) who are considering acquiring securities of Selkirk Copper Mines Inc. (the “Company”) are cautioned that this Presentation is for information purposes only and i
Slide 3: Forward Looking Statement, Cautionary Notes and Technical Disclosure
Forward Looking Statement, Cautionary Notes and Technical Disclosure Industry and Market Data This Presentation includes market and industry data and forecasts that were obtained from third-party sources, industry publications and publicly available information. Third-party sources generally state t
Slide 4: Agenda
00 Agenda
Slide 5: Agenda
Agenda 01 Setting the Stage Relevant Background on the Minto Project and the Focus of Selkirk Copper’s PEA 02 Preliminary Economic Assessment Results Investment and Financial Summary 03 Mineral Resource Update and Exploration Resource Definition and Growth, Targeting Methodologies, and Exploration 0
Slide 6: Setting the Stage
01 Setting the Stage Relevant Background on the Minto Project and the Focus of Selkirk Copper’s PEA
Slide 7: Corporate Overview
Corporate Overview Cornerstone investment by the Selkirk First Nation Capitalization 38% Basic Shares Outstanding M 158.6 Retail / HNW Selkirk First Nation — 18% Options M 8.8 18% • Acquired 100% ownership of the Minto Warrants (avg C$0.50) M 3.7 Selkirk First Project through bankruptcy and vended i
Slide 8: Located in Central Yukon with Established Infrastructure
Located in Central Yukon with Established Infrastructure ▪ Location: West of the Yukon River, ~20 km WNW of Minto Port Access Landing and ~250 km by road from Whitehorse via Yukon direct access to port of Skagway Highway 2 ▪ Access: Chartered air service from Whitehorse to an on-site airstrip, plus
Slide 9: Project Layout
Project Layout C$330M of Infrastructure in Place 9
Slide 10: An Updated Approach for Minto
An Updated Approach for Minto Boots on the Ground, Collaborative Selkirk First Nation Engagement, with a Planning Focus Boots on the Ground – this asset has been undermanaged for ~10 years – the Selkirk Copper Team is committed to changing that Social License – Selkirk Copper’s advancement of the Mi
Slide 11: Preliminary Economic Assessment (PEA) Objectives
Preliminary Economic Assessment (PEA) Objectives October 2025 Resource Drilling and PEA Study Objectives – Scorecard ✓ 2x Increase in Indicated & Inferred Resource – increased Indicated & Inferred by 280% ✓ 12-15 year mine life – delivered a 13 year mine life ✓ 4,100 tpd (1.5 Mtpa) mine and mill thr
Slide 12: Preliminary Economic Assessment Results
02 Preliminary Economic Assessment Results Investment and Financial Summary
Slide 13: PEA Feedback Received
PEA Feedback Received What We Heard Positives Negatives MRE Increase – Significant exploration success led Capital Uncertainty – PEA approach uses AACE to a large increase in resources & contained metal Class 5 (+100% to -50%) classification, even though much infrastructure is in place, and many quo
Slide 14: Minto PEA Results
Minto PEA Results Established Infrastructure Drives Low Initial Capital Cost and Rapid Payback Payback (Years) 1.9 1.3 1.0 13 Years C$186M After-tax NPV (7%) Mine Life Initial Capex 96% IRR C$1.4B 78% NPV 1.5 Mtpa 7.9:1 C$1.0B Throughput LOM Open Pit Strip Ratio NPV 48% C$291M C$141M C$494M NPV Annu
Slide 15: Minto PEA Production Profile
Minto PEA Production Profile Platform to Extend Mine Life and Increase Annual Production by up to 20% LOM Payable Copper LOM Payable Gold LOM Payable Silver 377 Mlbs 225 Koz 1,387 Koz Opportunities to extend mine life from near mine expansion targets 80 Copper Gold (CuEq) Silver (CuEq) Payable CuEq
Slide 16: Minto PEA Financial Metrics
Minto PEA Financial Metrics Strong Leverage to Spot Copper Prices and to Increases in Gold & Silver Prices Initial Capital AVERAGE ANNUAL FREE CASH FLOW C$186M C$83M at Base Case | C$146M at Spot $300 $2,000 C$1.7B Annual Free Cash Flow After-Tax (C$M) Cumulative Free Cash Flow After-Tax (C$M) $225
Slide 17: Minto Restart Initial Capital Cost Breakdown
Minto Restart Initial Capital Cost Breakdown Classification Amount (C$) Site General Site General $2,393,739 Contingency Mining $77,599,853 Processing $12,007,668 Surface facilities $10,178,348 Mining Transportation $200,013 Indirect Costs Tailings Ponds & Disposal $6,571,396 Indirect costs $54,339,
Slide 18: Mineral Resource Estimate and Exploration
03 Mineral Resource Estimate and Exploration Resource Definition and Growth, Targeting Methodologies, and Exploration
Slide 19: Exploration Driving Growth in Mineral Resources
Exploration Driving Growth in Mineral Resources New Discoveries Proving Unrecognized Potential of the Minto Project Growth in Total Tonnes 2026 MRE: Significant Discoveries and Expansions Measured Indicated Inferred Expansion Discovery 47.5 202 Lens, Minto North 117 Lens, Minto Main • 238% expansion
Slide 20: Growth in Known Lenses and New Discoveries
Growth in Known Lenses and New Discoveries 280% Increase in Indicated & Inferred Resources 20
Slide 21: Multiple Mineralized Lenses
Multiple Mineralized Lenses Gently Dipping, 5 – 50 metres thick; 100 – 1000 metres length Minto Open Pit Minto Underground (Copper Keel) Strongly Foliated Lens, Hosts Cu-Au Mineralization Strongly Foliated, Tightly Folded, Hosts High-Grade Cu- Au 50 cm Photo from 2015 assessment report Photo from 20
Slide 22: Mineralization, Lithology, and Deformation
Mineralization, Lithology, and Deformation Drill Core Scale Increasing Deformation Intensity, Increasing Magnetite Increasing Chalcopyrite Abundance Increasing Bornite Abundance (and Increasing Gold) Unfoliated Incipient Weak Moderate Strong Migmatite Semi- May contain Foliation Foliation Foliation
Slide 23: Developing Structural Model
Developing Structural Model Using Detailed Structural Analysis to Direct Mine Site, District and Regional Exploration • Inherited relatively simple structural model focused on brittle Folioform Sulphides Ridgetop Foliation Northeast Dipping faults in Copper Keel and Minto East UG mining areas. Lacke
Slide 24: Minto: Conceptual Exploration Model
Minto: Conceptual Exploration Model Integrating Learnings from Phase 1 Program into Resource Drilling and Exploration 100 – 1,000 metres 5 – 50 metres Bn > Cpy Cpy > Bn Cpy Cpy > Py Py > Cpy Semi Massive Net Texture Folioform Disseminated Sulphides Sulphides Sulphides Sulphides • Conceptual model he
Slide 25: Exploration Opportunities
Exploration Opportunities Developing a Target Pipeline for Resource Growth and New Discoveries Near Mine Objective Regional Objective Continue delineation of new resources to support the mine Make new discoveries by applying knowledge within highly restart decision prospective, under-explored distri
Slide 26: 2026 Mineral Resource Estimate
2026 Mineral Resource Estimate Grade Contained Metal Type Class Tonnage Cu(%) Au (g/t) Ag (g/t) Cu (Mlbs) Au (Koz) Ag (Koz) Open Indicated 21,779 0.59 0.17 1.8 283 122 1,294 Pit Inferred 7,052 0.55 0.13 1.6 85 30 354 Measured 348 0.92 0.39 3.3 7 4 36 Indicated 25,679 1.15 0.49 4.4 650 404 3,638 UG M
Slide 27: Key Elements of the PEA
04 Key Elements of the PEA Integrated Mines Plans, Mineral Processing, Concentrate Production, and Permitting
Slide 28: Mine Design
Mine Design Integrated Underground and Open Pit Mine Planning • Open pit and underground mining designed to extract copper-gold-silver mineralization defined in the 2026 MRE • Underground mining will be carried out in Minto North, Minto East, Copper Keel, and Area 118 deposits using long hole open s
Slide 29: Process Flowsheet
Process Flowsheet Investing in critical process equipment in a well-established flowsheet to improve throughput and recovery OVERVIEW • Conventional flowsheet comprising run-of-mine ore stockpile, three-stage crushing, SAG and ball mill grinding, gravity concentration, flotation, concentrate thicken
Slide 30: Process Plant
Process Plant Infrastructure with a Well-Established Operating History Existing Infrastructure Pre-Capex PEA (Capex) Scope • Buildings and mill infrastructure • Life safety pipework repairs (i.e. • HVAC repair is intact and structurally sound firewater line, shower/eyewash) • Crane hoist (high-speed
Slide 31: Feasibility Study Focus and Objectives
05 Feasibility Study Focus and Objectives Update Mineral Resource Estimate, Increase Mining Volume and Mill Throughput, Increase Copper Recovery
Slide 32: Feasibility Study Objectives
Feasibility Study Objectives Grade Improvement, Mining & Milling Rate, Metallurgical Recovery, and Metal Production • Resource Update – upgrade Indicated & Inferred Resources to Measured & Indicated, focus on grade improvement opportunities • Mine Life – maintain initial 13 year mine life, increase
Slide 33: Improved Modelling of Copper Oxides
Improved Modelling of Copper Oxides • Modelling of Oxide Ratio is a key input for estimating copper recovery and profitability • Oxide Ratio = Soluble Copper / Total Copper • Within assay database, Total Copper is reported for all samples (163,000 samples), whereas Soluble Copper was only analyzed s
Slide 34: Phase 2 Metallurgical Testing (underway)
Phase 2 Metallurgical Testing (underway) • Collecting samples for 5 master composites representing mix of locations, different sulphide / oxide mineralogy • Focus on expected mining areas for first five years of production • Results expected this fall to inform updated recovery formula for 2027 Feas
Slide 35: Appendix
06 Appendix
Slide 36: Leadership Team
Leadership Team Colin Joudrie Josh Kierce, CPA Justin Stevens Scott Fulton Kevin McGinty Stacie Jones CEO, Director CFO VP Corporate VP Engineering VP Lands and VP Exploration Development • Professional engineer Environment • Professional Geologist • Over 30 years of • Nine years of • 10 years of ex
Slide 37: Contact
colin.joudrie@selkirkcopper.com 604-760-3157 justin.stevens@selkirkcopper.com 604-240-2959 37
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