Slide 1: Redeveloping a District-Scale Critical Metals Camp
REDEVELOPING A DISTRICT-SCALE CRITICAL METALS CAMP TSX-V: NEXM | NASDAQ: NEXM nexmetalsmining.com JUNE 2026 | INVESTOR PRESENTATION
Slide 2: Cautionary Note Regarding Forward-Looking Statements
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS This presentation (the “Presentation”) is to be used by the recipient for informational purposes only and does not purport to be complete or contain all of the information that may be material to the current or future business, operations, financi
Slide 3: Important Cautionary and Other Information
IMPORTANT CAUTIONARY AND OTHER INFORMATION Caution Regarding Historic Data Certain scientific and technical information in this Presentation, including historic data compilation at the Selebi and Selkirk projects, are historic in nature. Reference should be made to the full text of the Selebi Techni
Slide 4: Scalable Growth in Mining-Friendly Botswana
SCALABLE GROWTH IN MINING-FRIENDLY BOTSWANA PAST-PRODUCING & PERMITTED Cu-Ni-Co-PGE MINES Selebi: 3.0 Mt @ 2.92% CuEq (Ind) and 24.7 Mt @ 3.40% CuEq (Inf)1 Selkirk: 44.2 Mt @ 0.81% CuEq (Inf) 2 CLEAR UPSIDE TO SCALE Step-out drilling and emerging Flexure Zone point to meaningful resource growth pote
Slide 5: Africa's Most Attractive Mining Jurisdiction
BOTSWANA AFRICA’S MOST ATTRACTIVE MINING JURISDICTION #1 IN AFRICA, #7 GLOBALLY — FRASER INSTITUTE (2025) LOW RISK JURISDICTION Long history of rule-of-law, competitive tax rates, no foreign exchange restrictions, and no required government free carry. STABLE POLITICAL ENVIRONMENT Botswana has long
Slide 6: A Foundation Decades in the Making
BUILDING NEXMETALS A FOUNDATION DECADES IN THE MAKING MINE HISTORY 1970s 1980s 1989 2015 2016 2017 Discovery & Selebi underground Selkirk underground BCL smelter Ceases all BCL liquidation development by production production begins failure production BCL begins NEXMETALS ERA Established Path to 202
Slide 7: Selebi Mines
SELEBI MINES • Single mining license covering 115 km² • Ortho-magmatic nickel-copper sulphide- type deposits • Historic cumulative production of: Selebi Main (1980 – 2016): ≈ 26 Mt mined Selebi North (1990 – 2016): ≈ 14 Mt mined • Current focus is expanding an already large resource
Slide 8: Data-Driven Modeling and Drilling Confirm Expansion Potential Beyond 2024 MRE
SELEBI MINES DATA-DRIVEN MODELING AND DRILLING CONFIRM EXPANSION POTENTIAL BEYOND THE 2024 MRE ACROSS BOTH DEPOSITS • Multiple untested borehole electromagnetic (BHEM) conductors and infill drilling highlight significant growth potential • 2025 underground and surface drilling programs confirmed min
Slide 9: Surface Drilling Advances the Flexure Zone as Key Driver of Resource Growth
SELEBI MAIN SURFACE DRILLING ADVANCES THE FLEXURE ZONE AS KEY DRIVER OF POTENTIAL RESOURCE GROWTH FIVE DRILL RIGS ARE CURRENTLY ACTIVE • ~30,000 metre ongoing, leveraging 2025 drilling and Highlight Intercepts Beyond the 2024 MRE Boundary Length BHEM results Hole ID (m) CuEq% Zone SMD-25-201 2.70 4.
Slide 10: Underground Drilling Confirms Scale and Continuity ~315 Metres Beyond 2024 MRE
SELEBI NORTH UNDERGROUND DRILLING CONFIRMS SCALE AND CONTINUITY ~315 METRES BEYOND THE 2024 MRE Highlight Intercepts Beyond the 2024 MRE Boundary • 9,656m completed in 11 Hole ID Length (m) CuEq% completed holes and 6 SNUG-24-114 21.30 4.14 including 13.80 4.40 abandoned holes SNUG-24-129 7.20 7.24
Slide 11: Selebi Mines Metallurgical Breakthrough
SELEBI MINES SELEBI MINES METALLURGICAL BREAKTHROUGH UNLOCKING ABILITY TO PRODUCE SEPARATE HIGH-GRADE SALEABLE COPPER & NICKEL-COBALT CONCENTRATES KEY POINTS: BULK SAMPLES – REAL WORLD TEST MATERIAL • Largest underground bulk sample from Selebi Mines with representative material selected for STRATEG
Slide 12: Selkirk Mine
SELKIRK MINE • Mining license spans ~14.6 km², with an additional 126.7 km² across four surrounding prospecting licenses • Historical production by Tati Nickel Mining Company: ~1 Mt at 1.5% Cu and 2.6% Ni (1989–2002) • Shallow, laterally extensive mineralization supports open-pit development potenti
Slide 13: Open-Pit Potential with Significant PGE Exposure
SELKIRK OPEN-PIT POTENTIAL WITH SIGNIFICANT PGE EXPOSURE • 34-hole resampling program complete; results confirm thick, consistent mineralization (e.g., DSLK211: 180.8 m @ 1.31% CuEq) • High-grade footwall zones identified, adding exploration potential • New PGEs analyses have potential for meaningfu
Slide 14: Selkirk Mine Metallurgical Breakthrough
SELKIRK SELKIRK MINE METALLURGICAL BREAKTHROUGH RESULT CONFIRM SEPARATE HIGH-GRADE SALEABLE COPPER & NICKEL-PGE CONCENTRATES AND IMPROVED RECOVERIES VALIDATED PROCESSING PATHWAY • Initial Locked Cycle Tests confirm ability to produce separate copper and nickel 2026 Blue Coast Research with Large Dia
Slide 15: Positioned for Value Realization in 2026
UPCOMING CATALYSTS POSITIONED FOR VALUE REALIZATION IN 2026 DATA DRIVEN ECONOMIC MODELING RESOURCE GROWTH OPTIMIZATION UNLOCKING DISTRICT SCALE UPSIDE 2026 SELEBI SELKIRK ✓ Completion of • Updated MRE ✓ Completion of 34-hole • Updated MRE underground drilling at • PEA resampling program Selebi North
Slide 16: Clear Path to Re-Rate
VALUE PROPOSITION CLEAR PATH TO RE-RATE $4,000 $3,800 Market $1,445 Capitalization $2,000 ACQUIRED $962 ACQUIRED44 ACQUIRED $546 $124 (CAD$M)5 $0 Foran Firefly Talon Magna 1 ~90% discount to peers on an $2.00 Median: $0.37/lb EV/Resource basis, despite EV/Resource $1.10 comparable fundamentals (US$
Slide 17: Capital Structure
CAPITAL STRUCTURE CAPITAL STRUCTURE TOP SHAREHOLDERS* Share Price (June 17, 2026) $3.48 Basic Shares Outstanding 35,648,164 Warrants 9,428,996 Other Institutions Tradeable Warrants1 14,035,100 21.3% Options 920,871 RSUs 487,640 DSUs 90,887 Management 42.7% Preferred Shares 657 Retail 3.7% FD Shares
Slide 18: Management
EXPERIENCED DISCOVERY FOCUSED OPERATORS MANAGEMENT Sean Whiteford Brett MacKay CEO & Director CFO & SVP Finance • 30+ years in global mining, with multi-commodity • 18 years in mining finance, including expertise across exploration, mining, and project studies. senior roles at Lundin Mining • Held s
Slide 19: Board of Directors
TRUSTED AND EXPERIENCED BOARD OF DIRECTORS Paul Martin Sean Whiteford André van Niekerk CEO & DIRECTOR 23 years of mining industry CHAIRMAN leadership, including CFO roles at 30+ years of global mining expertise Gatos Silver, Nevada Copper, and Over 30 years of executive leadership across exploratio
Slide 20: The Next Major Critical Metals Player
THE NEXT MAJOR CRITICAL METALS PLAYER PERMITTED & PROVEN: EXPLORATION UPSIDE: TIER-ONE JURISDICTION: BUILT-IN ADVANTAGE: Past-producing Cu-Ni-Co-PGE Untested EM plates along 2 km Botswana – safe, stable, mining- Two shafts, grid power, water, rail Mines corridor between and below Selebi friendly. Es
Slide 21: Appendix
Appendix TSX-V: NEXM | NASDAQ: NEXM 21
Slide 22: ESG Commitment & Impact
ESG COMMITMENT & We are committed to a sustainable future, aligning with ESG principles to drive economic prosperity, protect the environment, IMPACT and enrich our communities. Advancing responsible mining, promoting innovation, and ensuring a brighter future for Botswana and its people. Economic P
Slide 23: A Secure Source of Future Copper Supply
BOTSWANA A Secure Source of Future Copper Supply GOVERNANCE • Lowest corruption risk in Afria 59% of global copper reserves are located in conflict-affected, sanctioned, or unstable • Top quartile globally for rule of law jurisdictions. Botswana offers a stable alternative.1 • Ranked among the world
Slide 24: Initial NI 43-101 Mineral Resource Estimate on the Selebi Mine
EFFECTIVE DATE: JUNE 30, 2024 INITIAL NI 43-101 MINERAL RESOURCE ESTIMATE ON THE SELEBI MINE Classification Tonnage Grade Contained Metal Deposit Mt % Cu % Ni kt Cu kt Ni Selebi North 3.0 0.90 0.98 27 29 Indicated Total 3.0 0.90 0.98 27 29 Selebi Main 18.9 1.69 0.88 319 165 Inferred Selebi North 5.8
Slide 25: Initial NI 43-101 Mineral Resource Estimate on the Selkirk Mine
EFFECTIVE DATE: NOVEMBER 1, 2024 INITIAL NI 43-101 MINERAL RESOURCE ESTIMATE ON THE SELKIRK MINE Grade Contained Metal Classification Tonnage (Mt) Cu % Ni % Pd g/t Pt g/t CuEq* % Cu kt Ni kt Pd koz Pt koz Inferred 44.2 0.30 0.24 0.55 0.12 0.81 132 108 775 174 *CuEq% calculated using the formula Cu%
Slide 26: Contact Us
Contact Us +1 866-NEXM (6396) info@nexmetalsmining.com TSX-V: NEXM | NASDAQ: NEXM 26