Iamgold Corporation · TSX:IMG
Iamgold — Investor Presentation (October 2025)
40 slides from Iamgold's investor presentation, October 2025
Slide 1: Corporate Presentation October 2025
.OCTOBER 2025 CORPORATE PRESENTATION CORPORATE PRESENTATION TSX: IMG l NYSE: IAG October 2025 www.iamgold.com TSX: IMG l NYSE: IAG l www.iamgold.com
Slide 2: Cautionary Statement
.OCTOBER 2025 CORPORATE PRESENTATION Cautionary Statement CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION All information included or incorporated by reference in this presentation, including any information as to the Company’s vision, strategy, future financial or operating performance a
Slide 3: Technical Information and Qualified Persons
.OCTOBER 2025 CORPORATE PRESENTATION Technical Information and Qualified Persons CAUTIONARY NOTE TO U.S. INVESTORS REGARDING DISCLOSURE OF MINERAL RESERVE AND MINERAL RESOURCE ESTIMATES The mineral resource and reserve estimates contained in this presentation have been prepared in accordance with NI
Slide 4: Overview
.OCTOBER OCTOBER 2025 CORPORATE PRESENTATION Overview BUILDING A LEADING, MODERN CANADIAN-FOCUSED MULTI-ASSET PRODUCER • Côté Gold: Canada’s newest large-scale open pit gold mine, a model for modern mining, with significant growth and expansion potential • Westwood: Quebec underground success story,
Slide 5: Operations Overview
.OCTOBER 2025 CORPORATE PRESENTATION Operations Overview Operating Advanced Exploration CÔTÉ GOLD Ontario, Canada NELLIGAN MINING COMPLEX5 (70% IMG | 30% SMM1) Quebec, Canada (100% IMG) Start-up 2024 Mine type Open pit Status Pre-production Estimated mine life ~2041+ Deposit type Open pit/Sat. UG 36
Slide 6: Responsibility & Accountability
.OCTOBER 2025 CORPORATE PRESENTATION Responsibility & Accountability Since 2007 ENVIRONMENTAL • Released inaugural TCFD report in 2023 outlining roadmap and GHG emission reduction targets • Goal for net positive biodiversity at all operations • Adherence and reporting to the TSM Water Stewardship Pr
Slide 7: Q2 Highlights
.OCTOBER 2025 CORPORATE PRESENTATION Q2 Highlights OPERATING RESULTS Q2 2025 Q2 2024 YTD 2025 YTD 2024 RESPONSIBILITY & ACCOUNTABILITY Côté Gold (attr.) koz 67 20 118 21 TRIFR (total recordable injuries/200,000 hours) of 0.41 Westwood (100%) koz 29 35 53 67 2024 Sustainability Report published on Ma
Slide 8: Guidance for 2025
.OCTOBER 2025 CORPORATE PRESENTATION Guidance for 2025 + GOLD PRODUCTION CASH COST1 AISC1 (attributable ounces) ($/ounce sold) ($/ounce sold) YTD GUIDANCE Guidance Guidance YTD cost YTD cost 2025 2025 Previous Guidance Previous Guidance 118,000 250,000 – 280,000 Côté Gold (169,000 @ 100%) (360,000 –
Slide 9: Financial Results: Liquidity
.OCTOBER 2025 CORPORATE PRESENTATION Financial Results M 23.8 LIQUIDITY (as at June 30, 2025) $2 h: Cash and equivalents1 of $223.8 million and total liquidity2 of $616.5 million Cas • $85.1 million of cash and equivalents held by Essakane 3 91 . 7 M • $56.4 million held by Côté Gold (on 70% basis)
Slide 10: Financial Results
.OCTOBER 2025 CORPORATE PRESENTATION Financial Results FINANCIAL HIGHLIGHTS Q2 2025 Q2 2024 YTD 2025 YTD 2024 (In $ millions, unless otherwise stated) Q2 FINANCIAL REVIEW Revenues $580.9 $385.3 $1,058.0 $724.2 Gold revenues of $580.9 million from sales of 182,000 ounces at realized average price of
Slide 11: Côté Gold
.OCTOBER 2025 CORPORATE PRESENTATION Côté Gold 11
Slide 12: Côté Gold (70% interest)
.OCTOBER 2025 CORPORATE PRESENTATION Côté Gold (70% interest) (100% basis, unless otherwise stated) Ore mined kt Q2 2025 3,170 Q2 2024 2,109 YTD 2025 6,285 YTD 2024 4,053 Grade mined g/t 0.95 0.93 0.87 0.83 Q2 OPERATING HIGHLIGHTS & MILESTONES Material mined – total kt 11,808 10,514 22,563 18,111 Go
Slide 13: Côté Gold Processing Plant Ramp
.OCTOBER 2025 CORPORATE PRESENTATION Côté Gold CÔTÉ GOLD PROCESSING PLANT RAMP 42,000 PROCESSING RAMP UP 36,000 Mill throughput 2.9M tonnes at head grade of 1.10 g/t and 93% recoveries 30,000 Daily throughput (tonnes) • 100% nameplate achieved for 30-day average in June • Annual plant throughput exp
Slide 14: Côté Gold: Growth
.OCTOBER 2025 CORPORATE PRESENTATION Côté Gold: Growth CÔTÉ GOLD PROJECT – MINERAL RESERVES & RESOURCES (2024)1,2 Tonnes Grade Contained (100%) Attributable Contained Classification (millions) (g/t Au) (Moz Au) (Moz Au) INVESTIGATE OPTIMIZATIONS & POTENTIAL OPERATING EFFICIENCIES Côté Gold Deposit C
Slide 15: Côté Gold: Large-Scale and Long-Life Mine
.OCTOBER 2025 CORPORATE PRESENTATION Côté Gold: Large-Scale and Long-Life Mine Top 12 Gold Mines in Canada by Production1 (koz) 28 20 18 17 5 14 10 7 10 6 10 9 690 38 Remaining life of mine (years)2 585 Mines acquired in last 10 years 3 495 5 M&I Mineral Resources 2 (inclusive of reserves) 438 420 6
Slide 16: Westwood Complex, Canada
.OCTOBER 2025 CORPORATE PRESENTATION Westwood Complex, Canada 16
Slide 17: Westwood Complex
.OCTOBER 2025 CORPORATE PRESENTATION Westwood Complex (100% basis, unless otherwise stated) Ore mined – underground kt Q2 2025 98 Q2 2024 89 YTD 2025 187 YTD 2024 172 Ore mined – other sources kt 315 128 507 248 OPERATIONAL REVIEW Ore milled kt 323 302 605 551 Gold production of 29,000 ounces in Q2
Slide 18: Westwood Complex
.OCTOBER 2025 CORPORATE PRESENTATION Westwood Complex +4800 43-101 MINE PLAN1 (Dec 2023) (based on Mineral Reserves @ $1,500/oz Au) 400 1,500 $80 WEST CENTRAL EAST CORRIDOR CORRIDOR CORRIDOR OP '000 tonnes 300 $60 +4600 '000 tonnes 1,000 $ million 200 $40 500 100 $20 +4400 0 0 $0 2025 '26 '27 '28 '2
Slide 19: Essakane Gold Mine, Burkina Faso
.OCTOBER 2025 CORPORATE PRESENTATION Essakane Gold Mine, Burkina Faso 19
Slide 20: Essakane
.OCTOBER 2025 CORPORATE PRESENTATION Essakane (90% interest H1 YTD | 85% interest thereafter) (100% basis, unless otherwise stated) Ore mined kt Q2 2025 2,168 Q2 2024 2,195 YTD 2025 4,615 YTD 2024 5,653 Material mined – total kt 10,741 11,009 21,602 22,349 Q2 OPERATIONAL REVIEW Strip ratio w:o 4.0 4
Slide 21: Essakane Mine Plan
.OCTOBER 2025 CORPORATE PRESENTATION Essakane 43-101 MINE PLAN1 (Dec 2024) MINING & STRIP RATIO CAPITAL EXPENDITURES 50 4.0 200 CURRENT MINE PLAN1 3.0 150 Strip ratio Mine life extension to 2028 $ million M tonnes 25 2.0 100 • Mining will occur from three remaining pit phases in the Essakane Main Zo
Slide 22: Exploration – Nelligan Mining Complex
.OCTOBER 2025 CORPORATE PRESENTATION Exploration – Nelligan Mining Complex 22
Slide 23: Chibougamau: A Premier Mining Jurisdiction in Quebec
.OCTOBER 2025 CORPORATE PRESENTATION Chibougamau: A Premier Mining Jurisdiction in Quebec CREATING THE NEXT GREAT CANADIAN MINING CAMP Croteau Est IAG announced agreements1 to acquire Northern Superior and 100% SUP, Au Orbec on October 20, 2025 - exploration Inf: 0.64 Moz @ 1.7 g/t The Nelligan Mini
Slide 24: Nelligan Mining Complex
.OCTOBER 2025 CORPORATE PRESENTATION Nelligan Mining Complex Nelligan Longitudinal Section NELLIGAN (100% INTEREST) • Located 45 kilometres southwest of Chibougamau, Québec • Updated resource estimate1(on 100% basis): Cut-off Category Grade Tonnage Grade Contained Au (g/t Au) (Mt) (g/t Au) (koz Au)
Slide 25: Nelligan Mining Complex: Philibert
.OCTOBER 2025 CORPORATE PRESENTATION 1 Nelligan Mining Complex Philibert Aerial View of Mineralization PHILIBERT1 (75%) w/ option to acquire remaining 25% for C$3.5M • Northern Superior resource estimate2(on 100% basis): Cut-off Category Grade Tonnage Grade Contained Au (g/t Au) (Mt) (g/t Au) (koz A
Slide 26: .OCTOBER 2025 CORPORATE PRESENTATION
.OCTOBER 2025 CORPORATE PRESENTATION 26
Slide 27: Appendix
.OCTOBER 2025 CORPORATE PRESENTATION Appendix 27
Slide 28: Côté Primary and Secondary Crushing Circuits
.OCTOBER 2025 CORPORATE PRESENTATION Côté Primary and Secondary Crushing Circuits Lime Silo Screening Building Fire Water Systems Coarse Ore Dome Fine Ore Bin Secondary Crusher Primary Crusher HPGR 28
Slide 29: Côté Processing Plant
.OCTOBER 2025 CORPORATE PRESENTATION Côté Processing Plant Pre-leach O2 Storage & From Primary & Secondary Thickener Distribution Process Water Secondary Tank Leach Tanks(10) Crushing Cyclones 30 hrs Ball Mill Cyclones Cyanide Tailings Destruction SO2 Thickener Ball Mill Tailings Pump Verti-Mills (2
Slide 30: Côté Growth
.OCTOBER 2025 CORPORATE PRESENTATION Côté Growth VRIFY | Changing how mining communicates. GOSSELIN ZONE CÔTÉ ZONE 30
Slide 31: Longitudinal Section
.OCTOBER 2025 CORPORATE PRESENTATION Longitudinal Section Gosselin Zone Côté Resource Gosselin Pit Resource Pit Hydrothermal Breccia Priority Exploration (HdBx) Target for Hydrothermal Breccia GOS23-136 240.0 m grading 1.53 g/t Au GOS23-139 Incl. 120.0 m grading 2.26 g/t Au Côté 406.0 m grading 0.72
Slide 32: Côté + Gosselin Deposits – Geological Settings
.OCTOBER 2025 CORPORATE PRESENTATION Côté + Gosselin Deposits – Geological Settings Abitibi Belt: > 260 M Oz & Growing South Swayze Belt • 19+ Moz (& growing) • Historical - Numerous high-grade vein and shear zone hosted deposits Gold production within 175 km radius: • Timmins + KL + Matachewan 897,
Slide 33: Exploration Potential Objectives
.OCTOBER 2025 CORPORATE PRESENTATION ExplorationPotential Objectives for Côté type (intrusion related, breccia) disseminated mineralization and H-G Shear veins Extensive Property package of 596 km² JEROME MINE COTE DEPOSIT Jack Rabbit GOSSELIN DEPOSIT Clam Lake 33 33
Slide 34: 2023 – New Structural Corridor Theory
.OCTOBER 2025 CORPORATE PRESENTATION 2023 – New Structural Corridor Theory New Jack Rabbit / Theory Gomak Gosselin • Possibility that the main NE Côté trending structure through the Chester intrusive complex is the main mineralization trend. Straighter than originally Old thought. • E-W trending str
Slide 35: Gold Mineral Reserves – 100% Basis
.OCTOBER 2025 CORPORATE PRESENTATION 1,2,3 Gold Mineral Reserves – 100% Basis As of December 31, 2024 PROVEN PROBABLE TOTAL RESERVES Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces DEPOSIT Type* Location Ownership (000’s) (g/t) (000’s) (000’s) (g/t) (000’s) (000’s) (g/t) (000’s) Burkina
Slide 36: Gold Mineral Resources – 100% Basis
.OCTOBER 2025 CORPORATE PRESENTATION 1,2,3 Gold Mineral Resources – 100% Basis (Measured & Indicated Resources are inclusive of Proven & Probable Reserves) As of December 31, 2024 MEASURED INDICATED MEASURED + INDICATED INFERRED Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grad
Slide 37: Notes
.OCTOBER 2025 CORPORATE PRESENTATION Notes 37
Slide 38: Notes
.OCTOBER 2025 CORPORATE PRESENTATION Notes 38
Slide 39: Notes
.OCTOBER 2025 CORPORATE PRESENTATION Notes 39
Slide 40: Graeme Jennings, VP, Investor Relations
.OCTOBER 2025 CORPORATE PRESENTATION Graeme Jennings, VP, Investor Relations 416-388-6883 TSX: IMG l NYSE: IAG l www.iamgold.com