Slide 1: Company Presentation
www.tertiaryminerals.com info@tertiaryminerals.com AIM: TYM Drilling at Target A1, Mushima North Project, Zambia Company Presentation Mining Indaba February 2026
Slide 2: Disclaimer
OVERVIEW PROJECTS SUMMARY APPENDICES DISCLAIMER The content of information contained in these slides and the accompanying verbal presentation (together, the “Presentation”) has not been approved by an authorised person within the meaning of the Financial Services and Markets Act 2000 (“FSMA”). Relia
Slide 3: Key Investment Highlights
OVERVIEW PROJECTS SUMMARY APPENDICES KEY INVESTMENT HIGHLIGHTS Strong Technical Team Portfolio Diversification 100+ years technical & corporate experience Key projects in stable jurisdictions: Zambia, US, within the junior exploration sector. Extensive Sweden. African Experience. Exposure to multipl
Slide 4: Board of Directors
OVERVIEW PROJECTS SUMMARY APPENDICES BOARD OF DIRECTORS PATRICK CHEETHAM DR RICHARD BELCHER DONALD McALISTER DR MIKE ARMITAGE Chairman Managing Director Non-Executive Director Non-Executive Director • Geologist and founder of the • Geologist with over 23 years’ post-PhD • Accountant and founding Dir
Slide 5: Board of Directors Tertiary Minerals (Zambia) Ltd
OVERVIEW PROJECTS SUMMARY APPENDICES BOARD OF DIRECTORS Tertiary Minerals (Zambia) Ltd DR RICHARD BELCHER SHANGWA CHIME DONALD McALISTER SIMON NJELEMBA Managing Director Director Director Director • Part of the founding team of Tertiary • Geologist with over 23 years’ post-PhD Minerals’ Zambian Subs
Slide 6: Project Overview - Zambia
OVERVIEW OVERVIEW PROJECTS PROJECTS SUMMARY SUMMARY APPENDICES APPENDICES PROJECT OVERVIEW - ZAMBIA Cu, Ag, Zn • 5 projects held directly or through local JV partnership. • Key locations in Zambia: Copperbelt, Domes Region, IOCG Region. • Targeting: Cu, Co, Au, Ag (Sedimentary copper & IOCG). • Dril
Slide 7: Corporate Strategy
OVERVIEW PROJECTS SUMMARY APPENDICES CORPORATE STRATEGY PROJECT FOCUS 2026 ONWARDS Zambia (Cu, Ag, Zn, Co) Fasting tracking our projects through early exploration to resource. Evaluating the potential for early, small-scale mining operations. • Mushima North: Advancing our Flagship Project • Current
Slide 8: Mushima North Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH PROJECT ZAMBIAN IOCG REGION COMMODITY: Copper, Zinc, Silver OWNERSHIP: 90% LICENCE : 27068-HQ-LEL, ~350km2 STAGE: Limited (shallow) drilling completed (~2,871m in total) Currently working towards a JORC Exploration Target. GEOLOGY: Metasediments (sa
Slide 9: Konkola West Project
OVERVIEW PROJECTS SUMMARY APPENDICES KONKOLA WEST PROJECT ZAMBIAN COPPERBELT COMMODITY: Copper OWNERSHIP: 96% LICENCE SIZE: 27067-HQ-LEL, 35.7km2 STAGE: Drilling (on-going). GEOLOGY: Potentially part of the Konkola mineralised complex & southern part of the Kirla Bombwe anticline. KEY FEATURES: • JV
Slide 10: Mukai Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUKAI PROJECT ZAMBIAN COPPERBELT COMMODITY: Copper OWNERSHIP: 90% LICENCE SIZE: 27066-HQ-LEL, 27.7km2 STAGE: Initial drilling (on-going). GEOLOGY: Northwestern end of the Tirosa basin, targeting the Lower Roan near surface. KEY FEATURES: • JV with FQM. • Right ge
Slide 11: Jacks Project
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT ZAMBIAN COPPER BELT COMMODITY: Copper OWNERSHIP: 90% LICENCE SIZE: 27069-HQ-LEL, 70.6km2 STAGE: Initial drilling. GEOLOGY: Lower and Upper Roan within large synformal structure. Possible fault bounded along southern margin. KEY FEATURES: • Shallow,
Slide 12: Mupala Project
OVERVIEW PROJECTS SUMMARY APPENDICES MUPALA PROJECT ZAMBIAN COPPERBELT COMMODITY: Copper OWNERSHIP: 100% LICENCE SIZE: 32139-HQ-LEL, 41km2 STAGE: Early-stage exploration. GEOLOGY: Lower & Upper Roan on margin of large domal structure. Cross-cutting NW-SE faults. KEY FEATURES: • Right geology: Target
Slide 13: Recent Exploration (2025)
OVERVIEW PROJECTS SUMMARY APPENDICES RECENT EXPLORATION (2025) ADVACEMENT ACROSS MULTIPLE PROJECTS • Zambia • Mushima North: • Results from Phase 1 drilling (Q3 24), Phase 2 drilling (Q3 25), Phase 3 (Q4 25). Initial mineralogical work completed. • Plan to advance project to JORC Exploration Target
Slide 14: Next Steps
OVERVIEW PROJECTS SUMMARY APPENDICES NEXT STEPS MULTIPLE UPSIDE MILESTONES • Zambia • Mushima North: • Continued news flow. Assay results from Phase 3 Continuation of mineralogical work • JORC-compliant Exploration Target Further Drilling Working towards Maiden MRE. • Kobold: • Formation of Joint Ve
Slide 15: Project Timeline
OVERVIEW PROJECTS SUMMARY APPENDICES PROJECT TIMELINE MULTIPLE UPSIDE MILESTONES PROJECT 2025 2026 Q3 Q4 Q1 Q2 Q3 Q4 Drilling Drilling Assay Drilling Drilling Assay Exploration Target MUSHIMA NORTH Results Results Drilling Results JV Establishment Drilling/Assay Results? Drilling/Assay Results? KONK
Slide 16: Key Takeaways
OVERVIEW PROJECTS SUMMARY APPENDICES KEY TAKEAWAYS WHY INVEST? STRONG PROJECT PORTFOLIO: Attractive portfolio of projects covering key commodities in the right jurisdictions. EXPERIENCED TECHNICAL TEAM: Significant technical & corporate experience within the junior exploration sector. Proven ability
Slide 17: Tertiary Minerals plc contact details
Tertiary Minerals plc Queens Avenue Macclesfield Cheshire SK10 2BB United Kingdom Tel: +44 (0)1625 838 679 info@tertiaryminerals.com www.tertiaryminerals.com Drilling on the Konkola West Project, Zambia Additional information in following Appendices
Slide 18: Mushima North Summary
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH SUMMARY ACTIVITY DETAILS Geological Mapping Historic reconnaissance mapping. Regional survey interpretation (RCM, 1970s). Detailed mapping Mukundushi area (African Minerals Ltd, 1990s) Geochemistry Musondweji soil geochemical survey (Cu, Pb, Zn, Co,
Slide 19: Mushima North Historic Data
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH HISTORIC DATA Various exploration campaigns in the surrounding area included parts of Mushima North: • Focused around the small, high-grade Kalengwa copper-silver mine (4 million tons @ 5.2% Cu, 40 g/t Ag produced), located ~20 km to the west of the
Slide 20: Mushima North Target Overview
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH TARGET OVERVIEW TARGETS: • A1: Geology/Geochemistry: 3.1 by 1.6km Cu- (>80ppm, up to 280ppm), 1.7 by 0.5km Zn-, 1.3 by 0.3km Ag-in-soil anomaly. Near granite margin, extensive iron-enrich units (ferruginous conglomerates and ironstone). • A2: Geolog
Slide 21: Mushima North Target A1 Drilling
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH TARGET A1 PHASE 1 & 2 DRILLING PHASE 3 DRILLING Footnotes • Calculated intersections (down hole, true width unknown) are weighted averages based on silver, using a cut-off grade of 10 g/t Ag with up to 3m internal dilution. • Silver values rounded t
Slide 22: Mushima North Project Update
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH PROJECT UPDATE www.tertiaryminerals.com info@tertiaryminerals.com AIM: TYM 22
Slide 23: Mushima North Project Update
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH PROJECT UPDATE www.tertiaryminerals.com info@tertiaryminerals.com AIM: TYM 23
Slide 24: Mushima North Project Update
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH PROJECT UPDATE www.tertiaryminerals.com info@tertiaryminerals.com AIM: TYM 24
Slide 25: Mushima North Target C1: Drilling
OVERVIEW PROJECTS SUMMARY APPENDICES MUSHIMA NORTH TARGET C1: DRILLING • RKN800 on margin of the gravity anomaly recently resampled: • 33m grading 0.24% copper from 122m-155m downhole. • Hole ended in mineralisation grading 0.19% copper from 154-155m (EOH). • 7 AC holes targeting the Cu-in-soil anom
Slide 26: Jacks Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT SUMMARY WORK PROGRAMMES DETAILS Geological Mapping Historic Regional Mapping Geochemistry Regional soil geochemistry, 500 by 500m off-set grid, ME analysis (First Quantum Minerals, 2010s). Eastern part of the licence: 1,000m by 100m grid, Cu only (C
Slide 27: Jacks Project Historic Data
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT HISTORIC DATA • Historic soil data (Cyprus Amax & FQM) available over the project. • Indicates elevated Cu & Cu/Sc ratio. • Re-interpretation improved the understanding of the local geology. • Historic drilling targeting the “fold nose” and northern
Slide 28: Jacks Project Initial Drilling
OVERVIEW PROJECTS SUMMARY APPENDICES JACKS PROJECT INIITAL DRILLING • Aim of the initial drilling was to confirm historic drill results (drilling by Cyprus Amax- holes with prefix “KJ”). • Highlights include: • 13.5m @ 0.9% Cu from 77.5m (22JKDD01). • 6m @ 1.8% Cu from 105m (22JKDD03). Interval Hole
Slide 29: Mukai Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES MUKAI PROJECT SUMMARY WORK PROGRAMMES DETAILS Geological Mapping Regional Historic Map. Local interpreted map for Trident project area & Tirosa basin Geochemistry Regional soil sampling (FQM) around project area Regional sampling undertaken by Sinomine (limited i
Slide 30: Mukai Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES MUKAI PROJECT SUMMARY • Mukai Project is located centrally between: • FQM’s Trident Project (Sentinel Copper Mine & Enterprise Nickel Mine). • Arc Minerals (where Anglo American recently had a JV, to earn 70% for US$88.5M). • Contains same prospective stratigraph
Slide 31: Konkola West Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES KONKOLA WEST PROJECT SUMMARY WORK PROGRAMMES DETAILS Geological Mapping Regional Geological Map; 1:250,000 interpretative maps (SRK Consulting). Interpretative academic research Geochemistry Limited soil sampling (303 samples) Geophysics Historic regional airborn
Slide 32: Konkola West Project Summary
OVERVIEW PROJECTS SUMMARY APPENDICES KONKOLA WEST PROJECT SUMMARY Konkola-Lubambe-Musoshi ore deposits Mingomba Deposit: “Expected to be one of the top Pre-mining endowment: >775million tons @ three high grade copper deposits in the world” 2-3% copper KoBold Metals Vedanta has committed US$1 billion
Slide 33: Mupala Project Work Programmes
OVERVIEW PROJECTS SUMMARY APPENDICES MUPALA PROJECT WORK PROGRAMMES DETAILS Geological Mapping Regional Historic Map Geochemistry Historic hand auger (RST) 684 samples, 300 by 300m off-set grid covering entire licence Geophysics Regional MAG data (FQM) Drilling None Note: Programmes in bold italics
Slide 34: Mupala Project Exploration So Far
OVERVIEW PROJECTS SUMMARY APPENDICES MUPALA PROJECT EXPLORATION SO FAR • Licence wide soils on a 300 by 300m grid. • Cu-in-soil anomaly 1.8km by 0.6km (up to 422 ppm Cu). Conforms to historic and auger sampling. • Structural control: Anomaly spatially associated with NW-SE cross-cutting fault from r
Slide 35: Corporate Snapshot
OVERVIEW PROJECTS SUMMARY APPENDICES CORPORATE SNAPSHOT LISTING AIM: TYM ISSUED SHARES 5,116,855,727 Tertiary Minerals WARRANTS/OPTIONS 108,792,308 plc AS OF 04 FEBRUARY 2026: SHARE PRICE GBp 0.115 MARKET GB£ 5.93M CAPITALISATION 100% 100% 96% Tertiary Minerals US Tertiary Minerals Tertiary Gold Lim
Slide 36: Why Zambia?
OVERVIEW PROJECTS SUMMARY APPENDICES WHY ZAMBIA? ZAMBIA IS A MINING POWERHOUSE WITH WORLD-CLASS COPPERBELT • Major mining jurisdiction: >100 years of mining, forms the cornerstone to the Zambian economy. • Increase Production: From 0.7 Mt (2023) to >3 Mt by 2032. • Attracting Investment: Improvement
Slide 37: The Copper Problem
OVERVIEW PROJECTS SUMMARY APPENDICES THE COPPER PROBLEM INSUFFICIENT SUPPLY TO MEET PROJECTED DEMAND, EVEN WITH PROJECTED NEW MINE DEVELOPMENTS Wood Mackenzie’s Accelerated Energy Transition 2 (AET-2) demand scenario is based on a combination of global policy drivers and technical innovation conside
Slide 38: Copper - The No.1 Clean Energy Transition Metal
OVERVIEW PROJECTS SUMMARY APPENDICES COPPER - THE NO.1 CLEAN ENERGY TRANSITION METAL www.tertiaryminerals.com info@tertiaryminerals.com AIM: TYM 38