I-80 Gold Corp · TSX:IAU
I-80 Gold — Technical Presentation (October 2026)
75 slides from I-80 Gold's technical presentation, Oct 14, 2026
Slide 1: Creating a Nevada-Focused Mid-Tier Gold Producer
October 14- 15, 2026 Creating a Nevada- Focused Mid- Tier Gold Producer Analyst Site Tour NYSE: IAUX TSX: IAU
Slide 2: Cautionary Disclaimer Regarding Forward-Looking Statements
Cautionary Disclaimer Regarding Forward-Looking Statements Certain statements in this presentation constitute “forward-looking statements” or “forward-looking information” within the meaning of applicable securities laws, including but not limited to management’s assessment of i-80 Gold Corp.’s (“i-
Slide 3: Building a Mid-Tier Gold Producer
COMPANY OVERVIEW Building a Mid-Tier Gold Producer GRANITE CREEK • Granite Creek Underground Industry-Leading Pipeline of Gold Projects • Granite Creek Open Pit • 4 brownfield gold projects with existing infrastructure • 1 autoclave plant fed by 3 underground projects LONE TREE PLANT • Construction
Slide 4: Large Resource Base With All Deposits Open For Expansion
COMPANY OVERVIEW Large Resource Base With All Deposits Open For Expansion Proven & Probable Reserves Measured & Indicated Resources Inferred Resources Underground Projects 0.56Moz @ 7.87 g/t Au 1.6Moz @ 7.47 g/t Au 2.3Moz @ 7.99 g/t Au Open Pit Projects 5.7Moz @ 0.63 g/t Au 5.0Moz @ 0.62 g/t Au TOTA
Slide 5: Updated Development Pipeline
COMPANY OVERVIEW Updated Development Pipeline Establish a Hub-and-Spoke Mining and Add Large-Scale Heap Add Second Oxide Future Refractory Processing Platform around Lone Tree Plant Leach Operation Growth Project Lone Tree Feed Production Construction PFS & Future Future Pre-Permitting Development D
Slide 6: Establishing a Scalable Multi-Asset Mid-Tier Gold Producer
COMPANY OVERVIEW Establishing a Scalable Multi-Asset Mid-Tier Gold Producer Anticipated Average Annual Gold Output(1) 600 500koz - 600koz(1) 500 400koz – 500koz(1) Gold Production (koz) 400 300 200 150koz – 200koz(1) 100 0 2028E – 2029E 2031E+ Early to Mid-2030s GRANITE CREEK UNDERGROUND + MINERAL P
Slide 7: Significant Value Embedded Across i-80 Gold's Asset Portfolio
COMPANY OVERVIEW Significant Value Embedded Across i-80 Gold’s Asset Portfolio Trading at a Significant Discount to Project NPV and Growth Potential Base Case Sensitivity Avg. Gold Project Study Production per Production Gold Price After-tax Gold Price After-tax Start (/oz) NPV(5%)(1,2) IRR (/oz Au)
Slide 8: 5-Year Development Plan
COMPANY OVERVIEW 5-Year Development Plan That targets annual gold production of 400,000 - 500,000 ounces per year Latest & Upcoming 2026 2027 2028 2029 2030 2031 2032+ Economic Studies TOLL Granite Creek TOLL Q1 2025 – PEA (update from 2021) MILLING / PRODUCTION Q3 2026 – Feasibility Study(22) U
Slide 9: Granite Creek Property
GRANITE CREEK PROPERTY i-80 GOLD CORP
Slide 10: Granite Creek Property
Granite Creek Property Twin Creeks Mine PROJECTS ON THE PROPERTY • Granite Creek Underground (ramp up phase) Turquoise Ridge Mine • Granite Creek Open Pit Located 10 km from Nevada Gold Mines’ Turquoise Ridge Complex which currently hosts 10 km ~19Moz of gold resources(8) South Pacific Zone Situated
Slide 11: Granite Creek Underground Feasibility Study Highlights
GRANITE CREEK UNDERGROUND FEASIBILITY STUDY HIGHLIGHTS(22) Mine Life Status ~8.5 years Operating (ramp up) Average Annual Gold Production (2028-2032 Post Lone Tree Commissioning) Excludes Lone Tree Proven & Probable Reserve(10) ~75koz @ AISC $1,915/oz (11) * Capital Allocation 557koz @ 7.87 g/t Au $
Slide 12: Feasibility Study Reserves & Resources
Granite Creek UG Resource GRANITE CREEK UNDERGROUND Classification Domain Tonnage kt Au g/t Au koz Ogee 231 7.88 59 Feasibility Study Measured Otto SPZ 310 65 6.69 9.85 67 21 Reserves & Resources Total Ogee 606 322 7.49 7.06 146 73 GC UG Resource Otto 746 6.26 150 Indicated • Gold price $3,000/oz ($
Slide 13: Continuous Improvement Initiatives – 2 Key Opportunities
GRANITE CREEK UNDERGROUND Continuous Improvement Initiatives – 2 Key Opportunities Reconciliation • Short-term block model performing very well to grade control sampling (assays) 1) Ore Screening Opportunity Ore Screening Improves Grade Opportunity to increase grades Processed compared to the feasib
Slide 14: On Track to Meet 2026 Production Guidance
GRANITE CREEK UNDERGROUND On Track to Meet 2026 Production Guidance Development in the Main Decline and Lateral Drifts for Ore Access Sufficiently Advanced For the Duration of The 2026 • Q4 2026 development focus: ventilation and access for 2027 and beyond • Significant additional mineralization com
Slide 15: Significant Resource Expansion Potential
GRANITE CREEK UNDERGROUND Significant Resource Expansion Potential • Muti-year infill and step-out drilling program currently underway Reserves & Resources Within Ogee & South Pacific Zones • Potential for continued expansion to the north and at depth Change in Mineral Resource Inventory (PEA to F
Slide 16: Future Exploration Focus
GRANITE CREEK UNDERGROUND Future Exploration Focus • +6 km of the favorable structure and Comus host rocks occur on the Granite Creek Property • Exploration to-date has been focused on ~1 km area along the favorable geological corridor • Large property with limited exploration along strike or at dep
Slide 17: CX Zone: Opportunity Beneath Historic Pit
GRANITE CREEK UNDERGROUND 1) CX Zone: Opportunity Beneath Historic Pit Drill Program Planned Targeting the CX Zone • Mineralization located along the CX fault, historically drilled at ~50-meter spacing • CX Zone is less than 250 meters from existing development, but not carried within the current un
Slide 18: Rangefront and Adam Peak Exploration Upside
GRANITE CREEK UNDERGROUND 2) Rangefront and Adam Peak A A’ Exploration Upside • Gap in drilling along Rangefront and Adam Peak faults • Drilling began in Q3 2026 • Very close to existing development • Open along strike for several hundred meters A A’ CX Pit i-80 GOLD CORP | 18
Slide 19: Ogee Zone
GRANITE CREEK UNDERGROUND 3) Ogee Zone A A’ Exploration Upside • Lack of drilling in Ogee zone near workings and at depth • Began drilling this area in Q3 2026 • Will continue drilling in 2027 • Very close to existing development A’ A CX Pit i-80 GOLD CORP | 19
Slide 20: South Pacific Zone
GRANITE CREEK UNDERGROUND 4) South Pacific Zone A A’ Exploration Upside • SPZ currently drilled off on ~100 ft spacing, but specific areas need additional infill • Large gap in drilling between SPZ and Ogee Zone • Expansion potential at depth along SPZ • Robust high-grade mineralization across the S
Slide 21: South Pacific Zone, Rangefront and Mag Intersection
GRANITE CREEK UNDERGROUND 5) South Pacific Zone, Rangefront and Mag Intersection A A’ Exploration Upside • Convergence of significant structures creates a compelling target • No previous drilling at these intersections • SPZ mineralization plunges north, bound by CX West & Linehole faults i-80 GOLD
Slide 22: Granite Creek Dewatering
GRANITE CREEK UNDERGROUND Water Treatment Plant 2 Granite Creek Dewatering Current WTP2 Operating at ~1,500-1,800 gallons per minute • Increase of 68% since beginning of the year • Anticipate reaching ~3,500 gpm continuous by mid Q4 2026 as WTP2 is optimized GCW-14 Development • Treatment of contact
Slide 23: Underground Water Management Improvements
GRANITE CREEK UNDERGROUND Underground Water Management Improvements • Operations implementing larger sumps, increasing retention time − Decreased TSS in contact water will allow for higher treated volumes, limiting recirculation to UG development • Utilization of larger pump assemblies and dedicated
Slide 24: Granite Creek Open Pit: Technical Studies & Permitting
GRANITE CREEK OPEN PIT Oxide Status Technical Studies & Permitting Measured & Indicated Resource(12) 1.6Moz @ 0.97 g/t Au Inferred Resource(12) 100koz @ 0.81 g/t Au Next Planned Technical Study PFS Timing under review (PEA released in March 2025) Excludes Granite Creek Open Pit Mine Plan Economics:
Slide 25: Ongoing Technical Trade Off Analyses to Optimize Economics
GRANITE CREEK OPEN PIT Ongoing Technical Trade Off Analyses to Optimize Economics Large High-Grade, Low-CAPEX Open Pit Project Granite Creek Open Pit Layout • Former producing mine with substantial existing infrastructure • Large portion (95%) of resource in M&I category significant oxide and transi
Slide 26: Technical Work Underway
GRANITE CREEK OPEN PIT Technical Work Underway • OP Resources updated for the gold price alongside Granite Creek UG feasibility study. MI&I increased by 12% • Optimization and sensitivities HL LG completed across three processing Stockpiles scenarios • Surface infrastructure layouts designed for all
Slide 27: Open Pit Technical Drilling
GRANITE CREEK OPEN PIT Open Pit Technical Drilling • 17,000 feet of core drilling for ~$3m planned for 2027 to support PFS work • Geotechnical, metallurgical, and resource confidence drilling • Most existing drilling is RC holes from the ‘80s lacking QAQC • Holes will be focused on areas most critic
Slide 28: Permitting
GRANITE CREEK OPEN PIT Permitting Overview Permitting Actions Key Considerations • Open pit expansion of the • Operational needs minor modification • Mine dewatering management A, B, C, CX, & Mag Pits + associated dewatering • Bureau Land Management (BLM) • Pit lake geochemistry National Environment
Slide 29: Ruby Hill Property
RUBY HILL PROPERTY i-80 GOLD CORP
Slide 30: Ruby Hill Property Background
RUBY HILL PROPERTY Dominant land position in Eureka Mining District ~250 km to Lone Tree Plant via road Background Archimedes Underground Mineral Point Open Pit Archimedes • Under development; first ore Underground expected to be mined in Q4 2026 Upper 426 • High grade Carlin type East Archimedes Pi
Slide 31: Archimedes Underground PEA Highlights
ARCHIMEDES UNDERGROUND PEA HIGHLIGHTS Status Mine Life Construction ~10 years Indicated Mineral Resource(13) Average Annual Gold Production (following ramp-up) 436koz @ 7.6 g/t Au ~100koz @ AISC $1,893/oz (11) Inferred Resource(13) $2,175/oz Gold Price 988koz @ 7.3 g/t Au After-Tax NPV(5%)(2) After-
Slide 32: i-80's Second Planned Underground Mine
ARCHIMEDES UNDERGROUND i-80’s Second Planned Underground Mine MINERALIZED BODIES • Mine development on plan • Upper 426 Zone drilling completed April 2026 • Lower 426 & Ruby Deeps drilling commenced Q2 2026 • Focused on: – increasing resource confidence to M&I categories 426 Zone – defining oxide-su
Slide 33: Development Advancing on Schedule
ARCHIMEDES UNDERGROUND Archimedes UG Portal Yard Development Advancing on Schedule Archimedes Underground Lateral Development (ft) 2025 2026 YTD Oct. MTD MTD ft/day PTD 2,244 8,006 492 37.8 10,250 • Underground development commenced in September 2025 • Favorable ground conditions have supported stro
Slide 34: Development
ARCHIMEDES UNDERGROUND Development • Revised mine planning includes underground drilling in upper 426 Zone Upper 426 • Results show increased oxide mineralization which can be Zone placed on the active Ruby Hill 5,100’ amsl leach pad • Increased oxide eliminates the need to toll mill sulfide Lower 4
Slide 35: Upper 426 Zone Delivers High-Grade Infill Results
ARCHIMEDES UNDERGROUND Upper 426 Zone Delivers High-Grade Infill Results Plan View of Archimedes Underground Upper Archimedes Cross-Section Upper 426 Zone Drilling (completed April 2026) • Recent assay results – returned high-grade intercepts in targeted drill areas consistent with current geologica
Slide 36: 426 Zone – Heap Leaching Test Work
ARCHIMEDES UNDERGROUND 426 Zone – Heap Leaching Test Work Historic Test Work (Column Tests) 2026 Test Work at KCA (Coarse and Fine Bottle Roll Tests) Current Test Work at McClelland (Column Tests) KCA (2009) Sample Crush Grade Au Size (g/t) Extraction (mm) (%) High Grade 25 3.50 90 Low Grade 25 0.69
Slide 37: Feasibility Study Drilling
ARCHIMEDES UNDERGROUND Archimedes Underground – 5600 Exploration Complex Feasibility Study Drilling • Drilling through 2026 and 2027 to upgrade resource for planned feasibility study • Seven underground core rigs • 28 out of 145 holes drilled as of October 2026 − 32,000 feet completed across lower 4
Slide 38: MRE Update
Surface Layout ARCHIMEDES UNDERGROUND Engineering • Mine currently in development with exploration drilling ongoing to support feasibility-level mineral resource estimate (MRE) • Recent drilling increased leachable oxide inventory in the upper 426 zone MRE Update 426 Zone • Increased lower-cost oxid
Slide 39: 5-Year Execution Sequence
ARCHIMEDES UNDERGROUND 5-Year Execution Sequence i-80 GOLD CORP | 39
Slide 40: Mineral Point Open Pit PEA Highlights
MINERAL POINT OPEN PIT PEA HIGHLIGHTS Mine Life Status Exploration & Permitting ~17 years Average Annual Gold Equivalent Production (following ramp-up) Indicated Mineral Resource(14) 3.4Moz @ 0.48 g/t Au ~280koz @ AISC $1,400/oz (11) 104.3Moz @ 15.0 g/t Ag $2,175/oz Gold Price $27.25/oz Silver Price
Slide 41: PEA Outlines 17-year Mine Life; Strong Potential for Resource Growth
MINERAL POINT OPEN PIT PEA Outlines 17-year Mine Life; Strong Potential for Resource Growth Mineral Point PEA LOM Production Profile 160M 500,000 450,000 140M 400,000 Au oz (Contained / Recovered) 120M 350,000 100M 300,000 Tons 80M 250,000 200,000 60M 150,000 40M 100,000 20M 50,000 0M 0 1 2 3 4 5 6
Slide 42: Key Driver of Growth
MINERAL POINT OPEN PIT Key Driver of Growth Large Oxide Au-Ag Deposit - Largest of Two Oxide Projects in i-80’s Portfolio • Potential to become one of Nevada’s largest open pit truck-and- shovel mining operations • Current eastern limits of pit not defined by drilling – historic infrastructure preve
Slide 43: Substantial 2026 Infill and Step-Out Drill Campaign Underway
MINERAL PONT OPEN PIT Substantial 2026 Infill and Step-Out Drill Campaign Underway Initial Step-Out Drilling Demonstrates Potential to 2026 Drill Hole Locations Expand the Mineralized Footprint • Infill results align with expectations and confirm deep oxidation consistent with the geological model •
Slide 44: Seven Rigs Currently Drilling
MINERAL POINT OPEN PIT Seven Rigs Currently Drilling • 130,000 meters planned in 312 holes • 42,000 meters completed • 18 of 22 core holes completed • 91 of 290 RC holes completed • Program planned for completion late Q1 2027 • Budget: $40M - $45M exploration budget + $5M for permitting and technica
Slide 45: PFS Work Well Underway
MINERAL POINT OPEN PIT Planned Surface Layout PFS Work Well Underway • Surface infrastructure concept established • Existing Heap leach to be relocated in phases to enable pit advancement to the southeast • Layout incorporates permitting and stakeholder constraints • Configuration minimizes impacts
Slide 46: Project Execution Schedule
MINERAL POINT OPEN PIT Project Execution Schedule Anticipated Mineral Point Project Execution Schedule • Permitting and engineering advance in parallel to support project execution • Long-lead equipment and offsite power are key schedule dependencies • Pre-stripping is critical path to first gold •
Slide 47: Permitting – Lower Archimedes
RUBY HILL PROPERTY - LOWER ARCHIMEDES Permitting Overview • Upper Archimedes (above 5,100-ft level) is fully permitted for production to commence in 2026 • Lower Archimedes (below 5,100-ft level) federal and state permitting is in progress • Technical studies to demonstrate consistency with existing
Slide 48: Permitting – Mineral Point Open Pit
RUBY HILL - MINERAL POINT OPEN PIT Permitting Overview Permitting Actions Key Considerations • Complete Lower Archimedes federal • State Water Pollution Control Permit & Plan • Lower Archimedes NEPA determination will permitting prior to initiating Mineral Point Amendment for Lower Archimedes guide
Slide 49: Cove Underground
COVE UNDERGROUND i-80 GOLD CORP
Slide 50: Cove Underground PEA Highlights
UNDERGROUND PEA HIGHLIGHTS Status Mine Life Technical Studies & Permitting ~8 years Indicated Gold Resource(15) Average Annual Gold Production (following ramp-up) 310koz @ 8.2 g/t Au ~100koz @ AISC $1,303/oz (11) Inferred Resource(15) $2,175/oz Gold Price 1.16Moz @ 8.9 g/t Au After-Tax NPV(5%)(2) Af
Slide 51: Future Source of Refractory Feed to The Lone Tree Plant
UNDERGROUND Future Source of Refractory Feed to The Lone Tree Plant • Located immediately south of Nevada Gold Mines’ PEA Mine Plan Includes Helen & Gap Deposits Phoenix Cu-Au Mine; ~85 km to Lone Tree autoclave • Ongoing work is focused on: – revising the mine plan, sequence optimization, and cut-o
Slide 52: Permitting
UNDERGROUND Permitting Overview • Permitting actions are progressing with both state and federal agencies • Aim to have the project shovel ready when future mining rates decline at Granite Creek underground the first two underground mines. Key Considerations • Proposing no treatment for dewatering •
Slide 53: Lone Tree
LONE TREE i-80 GOLD CORP
Slide 54: Refurbishment on Plan for First Gold Pour Target
LONE TREE PLANT Refurbishment on Plan for First Gold Pour Target Recommissioning Unlocks Significant Value Eliminates Reliance on Shift to Owner-Operated Processing Funding Secured & Costly Third-Party Expected to Significantly Increase Construction Decision Processing Margins Granted Q1 2026 Centra
Slide 55: New Plant Design Supports a Manageable, Low-Risk Build
LONE TREE PLANT New Plant Design Supports a Manageable, Low-Risk Build Engineering Study Completed Q4 2025 Plant Capacity Design Throughput ~2,250 tpd Invested three years of engineering work ~$13M for the study through its evolving phases Plant Availability 85% Annual Throughput ~825,000 tpa Proces
Slide 56: Scope of Work – Construction Initiated in Q4 2026 as Planned
LONE TREE PLANT Scope of Work – Construction Initiated in Q4 2026 as Planned Material Feed Tailings Transfer Refurbishment Upgrades are Pad Expected to: Tailings • Improve process efficiency and Filtration operating flexibility • Meet new environmental compliance standards Carbon in Leach POX Autocl
Slide 57: Lone Tree Refurbishment Project Status
LONE TREE REFURBISHMENT PROJECT Project Status Refurbishment schedule and costs incurred to date remain in line with the December 2025 Lone Tree engineering study Engineering Construction • All permits well advanced • Bulk demolition complete – Plant is federally permitted • Specific demolition and
Slide 58: Extensive Trade-Off Studies Completed to Optimize Project Capital
LONE TREE PLANT Extensive Trade-Off Studies Completed to Optimize Project Capital Capital Cost Summary $Millions Direct Costs POX and POX Utilities $86 • Extensive engineering reviews, operating assessments, and Tailings Filtration $50 trade-off studies completed to Reagents and Utilities $39 – opti
Slide 59: Construction Workforce Peak
Electrical, Piping and Instrumentation Peak: 310 FTE Refractory Installation 333 Structural Steel Installation Earthworks / Structural Excavation / Backfill Early Works / Refurbishments Plateworks and Tanks Installation 267 Demolition Works Concrete Works 200 Building Repairs Demolition 133 Refracto
Slide 60: Benchtop Autoclave Test Work Summary
BENCHTOP AUTOCLAVE TEST WORK SUMMARY 2027 PROCESS FEED PLANNING - UNDER REVIEW FOR OPTIMIZATION Lone Tree Acid POX Conditions: • 199°C, 297 psi 1H 2027: • 45-minute retention time SULFIDE Third party Granite Creek GRANITE CREEK UNDERGROUND processing Zone Number of Tests at Average Au Recovery OXIDE
Slide 61: Dual POX-CIL Processing Flexibility
LONE TREE PLANT Dual POX-CIL Processing Flexibility Designed to Process Refractory Material Using an Integrated POX-CIL Processing Stream • High-grade oxide material to bypass POX circuit (autoclave) to be processed solely in the CIL circuit after grinding • Flexibility allows the treatment of miner
Slide 62: Lone Tree Plant Refurbishment Permitting
LONE TREE PLANT REFURBISHMENT Permitting Overview • Process plant refurbishment for the existing autoclave Key Considerations • Three new or modified operating air permits are required • Original emission controls do not meet current regulatory standards • State Water Pollution Control Permit modifi
Slide 63: Health & Safety
HEALTH & SAFETY i-80 GOLD CORP
Slide 64: Occupational Health, Safety & Loss Control
Occupational Health, Safety & Loss Control Current Program Program Evolution Worker Protection Worker Protection • Training • Enhancing supervisor skills • Business Partner support and oversight • Standardized controls across projects and operations Risk Management • Continued task-based training •
Slide 65: Community Engagement
COMMUNITY ENGAGEMENT i-80 GOLD CORP
Slide 66: Community-Driven and Collaborative Development
i-80 GOLD CORP. Working with Local, State and Federal Partners on Community- Driven and Collaborative Development i-80 GOLD CORP | 66
Slide 67: Workforce Development Strategy
WORKFORCE DEVELOPMENT STRATEGY i-80 GOLD CORP | 67
Slide 68: Workforce Housing Guided by Our Values
Every housing decision is guided by our values of care, respect, and excellence - ensuring our planning balances the needs of our workforce, communities, and business while creating sustainable, long-term prosperity for employees, communities, and partners. i-80 GOLD CORP | 68
Slide 69: Appendix
APPENDIX i-80 GOLD CORP
Slide 70: Capital Overview
COMPANY OVERVIEW Capital Overview Rank Institution As of October 6, 2026 S/O % Location As of October 6, 2026 1 Condire Management 9.5 United States 2 Libra Advisors LLC 7.4 United States TSX: IAU NYSE American: IAUX Ticker Symbols CAD USD 3 Daniel Kaufman 6.0 Puerto Rico 4 Sprott Asset Management 4
Slide 71: Mineral Resources Attributable to i-80 Gold Corp.
MINERAL RESOURCE ESTIMATE Mineral Resources Tonnes (kt) Gold Grade (Au g/t) Silver Grade (Ag g/t) Gold Ounces (koz) Silver Ounces (koz) Attributable to Proven Granite Creek – Underground(10)(20)* 308 8.13 81 i-80 Gold Corp. Probable Granite Creek – Underground(10)(20)* 1,890 7.83 476 TOTAL PROVEN &
Slide 72: Endnotes
Endnotes 1) Based on capital costs, gold output estimates and average annual gold output targets in the most recent life of mine gold output schedules disclosed in the latest technical studies filed for each respective project and related property: the Lone Tree Facility, Granite Creek underground,
Slide 73: Endnotes continued
Endnotes continued 9) Granite Creek Underground: Notes to Mineral Resources effective March 31, 2026: Reported underground and open pit mineral resources for the Granite Creek Property are 100% attributable to the Company with the exception of a fee parcel and certain unpatented mining claims, which
Slide 74: Endnotes continued
Endnotes continued 14) Mineral Point Open Pit: Mineral resources have an effective date of December 31, 2024. Mineral resources are not mineral reserves and do not have demonstrated economic viability. Mineral resources are the portion of Mineral Point that can be mined profitably by open pit mining
Slide 75: Non-GAAP and Supplemental Financial Performance Measures
Non-GAAP and Supplemental Financial Performance Measures The Company has included certain terms or performance measures commonly used in the "Adjusted loss” and “adjusted loss per share” are non-GAAP financial performance measures that the mining industry that are not defined under US GAAP in this d