Inferra AI / Company / IAUX / Slides
i-80 Gold Corp. — CLICK HERE TO VIEW PDF (company IR deck)
i-80 Gold Corp. (IAUX) · 0 slides · Filed Oct 23, 2026
Every slide of this earnings presentation, with the text as published. Open the original deck ↗ · All IAUX deck slides
Slide 1 — Creating a Nevada-Focused
NYSE: IAUX TSX: IAU Creating a Nevada-Focused Mid-Tier Gold Producer October 14-15, 2026 Analyst Site Tour
Slide 2 — Cautionary Disclaimer Regarding Forward-Looking Statements
i-80 GOLD CORP | 2 TECHNICAL REPORTS REPORT DATE NI 43-101 Preliminary Economic Assessment Technical Report for the Project, Lander County, Nevada S-K 1300 Initial Assessment & Technical Report Summary for the Project, Lander County, Nevada March 31, 2025 March 26, 2025 NI 43-101 Technical Report Feasibility Study Granite Creek, Humboldt County, Nevada, USA S-K 1300 SEC Technical Report Summary Pre-Feasibility Study Granite Creek, Humboldt County, NV September 21, 2026 September 21, 2026 NI 43-101 Technical Report on the Mineral Resource Estimates for the Lone Tree Deposit, Nevada S-K 1300 Technical Report Summary on the Mineral Resource Estimates for the Lone Tree Deposit, Nevada March 31, 2025 March 24, 2025 NI 43-101 Preliminary Economic Assessment Technical Report for the Ruby Hill Project, Eureka Country, Nevada, USA S-K1300 Initial Assessment of the Ruby Hill Project, Eureka County NV March 31, 2025 March 29, 2025 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-80 Gold” or the “Company”) future plans and operations; the Company's anticipated pipeline; the anticipated timing of permitting the Lone Tree Plant, including for a construction decision, construction and commissioning; the anticipated benefits of the refurbished processing plant including to cash margins; the anticipated cost and payback period of the refurbishment plan; the perceived merit of projects or deposits; the impact, timing, and execution of the Company’s development plan; ability to upgrade mineral resources and expand mineral resource base; anticipated improvement in project economics; the anticipated timing of permitting, production, project development; completion dates for pre-feasibility/feasibility studies and technical studies; execution and timing of all asset advancements in the ng Package and the new development plan; that ramp-up activities at Granite Creek will lead to steady state production; the Granite Creek dewatering campaign; the potential to utilize the autoclave infrastructure at the Lone Tree Plant to process mineralized material pending the outcome of the refurbishment, and benefits resulting from such utilization; that Mineral Point will become the Company’s largest producing asset and is expected to provide the biggest step change in company-wide production; the successful permitting of each project; the ability to further de-risk the development pipeline; the timing, completion and results of the Company’s drill programs; the inclusion of drill results in future feasibility studies; that any of the projects will reach commercial production; and the Company’s ability to achieve mid-tier production status; outlook on gold output; the anticipated growth expenditures; the anticipated timing of permitting, production; the anticipated redemption of existing convertible debentures; project development or technical studies; the Company’s 2026 production, operating and development cost guidance; the anticipated timing for water treatment plant completion at Granite Creek; anticipated commissioning of the Lone Tree Plant by the end of 2027; the expected timing of first gold from upper Archimedes; constitutes forward looking statements or forward-looking information within the meaning of applicable securities laws. All statements other than statements of historical fact are forward-looking statements. Often, but not always, forward-looking statements can be identified by the use of words such as “plans”, “expects”, “is expected”, “budget”, “scheduled”, “estimates”, “continues”, “forecasts”, “projects”, “predicts”, “intends”, “anticipates” or “believes”, or variations of, or the negatives of, such words and phrases, or state that certain actions, events or results “may”, “could”, “would”, “should”, “might” or “will” be taken, occur or be achieved. Readers are cautioned that the assumptions used in the preparation of information, although considered reasonable at the time of preparation, may prove to be inaccurate and, as such, reliance should not be placed on forward looking statements. The Company’s actual results, performance or achievement could differ materially from those expressed in, or implied by, these forward-looking statements and, accordingly, no assurance can be given that any of the events anticipated by the forward-looking statements will transpire or occur, or if any of them do so, what benefits, if any, that the Company will derive therefrom. By their nature, forward looking statements are subject to numerous risks and uncertainties, some of which are beyond the Company’s control, including general economic and industry conditions, volatility of commodity prices, title risks and uncertainties, the ability to access sufficient capital from internal and external sources such as selling assets or obtaining additional capital on terms that may be onerous or highly dilutive. Any potential future capital raise will depend on the capital markets and its financial condition at such time, currency fluctuations, construction and operational risks, licensing and permit requirements, environmental risks, competition from other industry participants, the lack of availability of qualified personnel or management, imprecision of mineral resource, or production estimates. Additional risks include uncertainties related associated with the refurbishment of the Lone Tree Plant, including cost overruns and construction delays; risks related to third-party toll milling arrangements and processing delays; uncertainties regarding water management and groundwater inflows at Granite Creek and other projects; and risks related to the conversion of mineral resources and the results of anticipated updated technical reports. Please see “Risks Factors” in the Form 10-K for the fiscal year ended December 31, 2025, as updated by the Company’s quarterly reports on Form 10-Q and current reports on Form 8-K, for more information regarding risks pertaining to the Company, which is available on EDGAR at www.sec.gov/edgar and SEDAR+ at www.sedarplus.ca. Readers are encouraged to carefully review these risk factors as well as the Company’s other filings with the U.S. Securities and Exchange Commission and the Canadian Securities Administrators. All forward-looking statements contained in this presentation speak only as of the date of this presentation or as of the dates specified in such statements. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise except as required by applicable law. Additional information relating to i-80 Gold can be found on i-80 Gold’s website at www.i80gold.com, SEDAR+ at www.sedarplus.ca,and on EDGAR at www.sec.gov/edgar. Cautionary Note to U.S. Investors Concerning Estimates of Resources: This presentation uses the term “inferred resources”. “Inferred resources” have a great amount of uncertainty as to their existence, and great uncertainty as to their economic and legal feasibility. Under Canadian and U.S. rules, estimates of inferred mineral resources may not form the basis of a feasibility study or prefeasibility study, except in rare cases, and may not be converted to mineral reserves. The Company has prepared technical reports for its material properties in accordance with Regulation S-K Subpart 1300 (“S-K 1300”) as well as under National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). While the determination of mineral resources under NI 43-101 and S-K 1300 are similar, they are not identical. Readers are cautioned that mineral resources are not economic mineral reserves and that the economic viability of mineral resources that are not mineral reserves has not demonstrated economic viability. Caution Regarding Mineral Resource Estimates: This presentation uses the terms measured mineral resources, indicated mineral resources, and inferred mineral resources as a relative measure of the level of confidence in the resource estimate. Mineral resource estimates may be materially affected by geology, environmental, permitting, legal, title, socio- political, marketing or other relevant issues. However, other than as disclosed in this presentation, i-80 is not aware of any known environmental, permitting, legal, title, socio-political, marketing or other relevant issues that could materially affect the estimates of mineral resources disclosed herein. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to the category of indicated mineral resource or measured mineral resource. The mineral resource and reserve estimates have been classified in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum's CIM Definition Standards on Mineral Resources and Mineral Reserves adopted in 2019 and incorporated by reference into NI 43-101 as well as under S-K 1300. Readers are cautioned not to assume that further work on the stated resources will lead to mineral reserves that can be mined economically. No Advertisement or Solicitation and Technical Information: This presentation is not, and under no circumstances is to be construed as, a prospectus, an advertisement or a public offering of securities in Canada, the United States or any other jurisdiction. No securities commission or similar authority in Canada or the United States has reviewed or in any way passed upon this document or the merits of any securities described herein, and any representation to the contrary is an offence. This presentation does not constitute an offer to sell or the solicitation of an offer to buy any securities of i-80 in any jurisdiction. Unless otherwise indicated, i-80 has prepared the technical information in this presentation (“Technical Information”) based on information contained in the technical reports (collectively the “Technical Reports”) listed below concerning the Ruby Hill project, the Lone Tree project, the project and the Granite Creek project available under i-80 ’s profile on SEDAR+ at www.sedarplus.ca and on EDGAR at www.sec.gov/edgar as well as on i-80’s website. Each Technical Report was prepared by or under the supervision of a qualified person (a “Qualified Person”) as defined in NI 43-101 and S-K 1300. For readers to fully understand the information in this presentation, they should read the Technical Reports in their entirety, including all qualifications, assumptions and exclusions that related to the information set out in this presentation which qualifies the Technical Information. Readers are advised that mineral resources that are not mineral reserves do not have demonstrated economic viability. The Technical Reports are each intended to be read as a whole, and sections should not be read or relied upon out of context. The Technical Information is subject to the assumptions and qualifications contained in the Technical Reports. All maps and diagrams are for illustrative purposes only and not to scale. The technical information in this presentation has been prepared under the supervision of, and has been reviewed and approved by of Paul Chawrun, P.Eng., member of the Professional Engineers of Ontario (PEO) and the Company’s Chief Operating Officer, and Tyler Hill, CPG., Vice President Geology for the Company, each of whom are qualified persons within the meaning of NI 43-101 and S-K 1300. Comparable Information: The comparable information about other issuers was obtained from public sources and has not been verified by the Company. “Comparable” means information that compares an issuer to other issuers. The information is a summary of certain relevant operational and valuation attributes of certain mining and resource companies and has been included to provide the prospective investor an overview of the performance of what are expected to be comparable issuers. The comparables are considered to be an appropriate basis for comparison with the Company based on their industry, size, operating scale, commodity mix, jurisdiction, capital structure and additional criteria The comparable issuers face different risks from those applicable to the Company. Readers are cautioned that there are risks inherent in relying on comparables and that past performance is not indicative of future performance and that the performance of the Company may be materially different from the comparable issuers. Foreign Exchange Assumptions: All amounts discussed herein are denominated in U.S. dollars unless otherwise specified. The information contained in this presentation reflects our assumptions, opinions, estimates, plans, beliefs and expectations as October 14, 2026 and is subject to change without notice.
Slide 3 — Building a Mid-Tier Gold Producer
i-80 GOLD CORP | 3 COMPANY OVERVIEW Building a Mid-Tier Gold Producer *Not included in current development plan. (1)(19) See Endnotes 1 and 19 in Appendix. **Source: Fraser Institute Annual Survey of Mining Companies, 2025. GRANITE CREEK • Granite Creek Underground • Granite Creek Open Pit LONE TREE PLANT (Autoclave & CIL) UNDERGROUND RUBY HILL PROPERTY • Archimedes Underground • Mineral Point Open Pit FAD PROPERTY* Industry-Leading Pipeline of Gold Projects • 4 brownfield gold projects with existing infrastructure • 1 autoclave plant fed by 3 underground projects • Construction and development underway • Targeting ~600,000 oz Au/year under broader development plan(1) All Deposits Open For Expansion • Well-understood geology and metallurgy • One of the largest mineral resource holders in Nevada Funded Development Plan(1) • Raised >$1B in secured and available capital(19) Experienced, Strengthened Leadership & Board • Proven track record from exploration and financing to development and production • Deep Nevada mining expertise • Strengthened board and management Nevada Ranked #1 Jurisdiction Globally for Mining Investment Attractiveness** Nevada
Slide 4 — Large Resource Base With All Deposits Open For Expansion
i-80 GOLD CORP | 4 *Lone Tree open pit deposit is not included in the current development plan. Desktop review of path to development and permitting underway. Mineral resources inclusive of reserves. Refer to the related Endnotes and to the Mineral Resources Attributable to i-80 Gold Corp. slide in the Appendix for the notes related to the following mineral resource estimates, such as classification, cutoff grades, reporting standards, relevant assumptions, and attributable interest. COMPANY OVERVIEW Large Resource Base With All Deposits Open For Expansion Silver resource: 104.3Moz M&I @ 15.0 g/t Ag 91.5Moz Inferred @ 14.6 g/t Ag 0.0 1.0 2.0 3.0 4.0 Granite Creek Underground Archimedes Underground (Ruby Hill) Cove Underground Granite Creek Open Pit Mineral Point Open Pit (Ruby Hill) Lone Tree Open Pit* Gold Ounces (millions) Proven & Probable Reserves Measured & Indicated Resources Inferred Resources 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 TOTAL 0.56Moz @ 7.87 g/t Au 7.3Moz @ 0.79 g/t Au 7.4Moz @ 0.99 g/t Au
Slide 5 — Updated Development Pipeline
i-80 GOLD CORP | 5 COMPANY OVERVIEW Updated Development Pipeline Refractory Refractory/Oxide Oxide Oxide Refractory Autoclave Autoclave/Heap Leach Heap Leach CIL Autoclave Production Construction PFS & Pre-Permitting Future Development Granite Creek Underground Future Development Archimedes Underground Mineral Point Open Pit Granite Creek Open Pit Mid-Tier Gold Producer with Scale of ~600koz per Year Establish a Hub-and-Spoke Mining and Processing Platform around Lone Tree Plant Add Large-Scale Heap Leach Operation Underground i-80 GOLD CORP | 5 Add Second Oxide Growth Project Future Refractory Lone Tree Feed Development pathway is illustrative and reflects anticipated timing, which is subject to change..
Slide 6 — Establishing a Scalable Multi-Asset Mid-Tier Gold Producer
i-80 GOLD CORP | 6 0 100 200 300 400 500 600 Gold Production (koz) 2028E – 2029E 2031E+ Early to Mid-2030s GRANITE CREEK UNDERGROUND Status: Operating (Ramp-up) ARCHIMEDES UNDERGROUND Status: Construction/Technical Studies Underway LONE TREE AUTOCLAVE (2028) Status: Refurbishment + MINERAL POINT OPEN PIT Status: Infill & Step-out Drilling, Technical Studies & Pre-permitting + GRANITE CREEK OPEN PIT Status: Technical Studies & Permitting COMPANY OVERVIEW Establishing a Scalable Multi-Asset Mid-Tier Gold Producer Anticipated Average Annual Gold Output(1) *underground remains an important source of future refractory feed for the Lone Tree Plant as mining rates at Granite Creek and Archimedes underground decline over time supporting sustained plant throughput, rather than providing incremental feed. (1)(19) See Endnotes 1 and 19 in Appendix 500koz - 600koz(1) 400koz – 500koz(1) 150koz – 200koz(1) Funded from secured & committed capital(1,19); in dialogue with lenders for corporate revolver, if needed Funded from expected cash flows(19) Fully funded
Slide 7 — Significant Value Embedded Across i-80 Gold’s Asset Portfolio
i-80 GOLD CORP | 7 *Mineral Point NPV and IRR a assumes silver price of $27.25/oz Ag at $2,175/oz Au and $35.00/oz Ag at $3,000/oz Au. **Excludes Granite Creek Open Pit: The Granite Creek Property technical study published on September 21, 2026 focused solely on feasibility-level technical work and economics for Granite Creek underground with an updated mineral resource estimate for Granite Creek open pit only. Previously reported 2025 PEA economics for Granite Creek open pit are therefore no longer applicable and subject to pending updated technical studies. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports (1)(2)(3) See Endnotes 1, 2 and 3 in Appendix COMPANY OVERVIEW Significant Value Embedded Across i-80 Gold’s Asset Portfolio Project Study Base Case Sensitivity Avg. Gold Production per Year (1) (following ramp up) Production Start Gold Price (/oz) After-tax NPV(5%) (1,2) IRR Gold Price (/oz Au) After-tax NPV(5%) (1,2) IRR Refractory Granite Creek Underground 2026 NI 43-101 FS(22) $2,750 $118M - $4,500 $598M - 75.1koz Ramp up phase Archimedes Underground 2025 PEA $2,175 $127M 23% $3,000 $644M 81% 101.9koz 2026E Underground 2025 PEA $2,175 $271M 30% $3,000 $626M 54% 100koz 2029E Oxide Mineral Point Open Pit* 2025 PEA $2,175 $614M 12% $3,000 $2.3B 29% 282koz AuEq(3) 2031E Granite Creek Open Pit** 2025 PEA - - - - - - - - TOTAL $1.1B $4.1B Trading at a Significant Discount to Project NPV and Growth Potential
Slide 8 — 5-Year Development Plan
i-80 GOLD CORP | 8 COMPANY OVERVIEW 5-Year Development Plan That targets annual gold production of 400,000 - 500,000 ounces per year Anticipated timelines illustrated above are subject to the successful refurbishment and commissioning of the Company’s Lone Tree Plant among other factors (22) See Endnote 22 in Appendix. *Pre-permitting underway. Formal permitting for the Mineral Point open pit project has not yet commenced. 2026 2027 2028 2029 2030 2031 2032+ Latest & Upcoming Economic Studies Establish Hub- and-Spoke Mining and Processing Platform Refractory / Oxide Granite Creek Underground TOLL MILLING TOLL MILLING / STOCKPILE PRODUCTION Q1 2025 – PEA (update from 2021) Q3 2026 – Feasibility Study(22) Archimedes Underground CONSTRUC- TION STOCKPILE / HEAP LEACH PRODUCTION Q1 2025 – PEA Mid-2027 – Feasibility Study Lone Tree Autoclave/CIL Plant REFURBISHMENT PROCESSING Q4 2025 – Refurbishment Study Add Large-Scale Heap Leach Operation Oxide Mineral Point Open Pit PERMITTING* & TECHNICAL CONSTRUCTION PRODUCTION Q1 2025 – PEA Mid-2027 – Pre-Feasibility Study
Slide 9 — GRANITE CREEK
GRANITE CREEK PROPERTY i-80 GOLD CORP
Slide 10 — Granite Creek Property
i-80 GOLD CORP | 10 PROJECTS ON THE PROPERTY • Granite Creek Underground (ramp up phase) • Granite Creek Open Pit Located 10 km from Nevada Gold Mines’ Turquoise Ridge Complex which currently hosts ~19Moz of gold resources(8) Situated at the intersection of the highly prolific Battle Mountain-Eureka and Getchell gold trends See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (8) See Endnote 8 in Appendix Granite Creek Property South Pacific Zone 10 km Turquoise Ridge Mine Granite Creek Property Twin Creeks Mine
Slide 11 — Operating (ramp up)
i-80 GOLD CORP | 11 i-80 GOLD CORP | 11 GRANITE CREEK UNDERGROUND Status Operating (ramp up) Proven & Probable Reserve(10) 557koz @ 7.87 g/t Au Measured & Indicated Resource(9) 860koz @ 7.17 g/t Au Inferred Resource(9) 203koz @ 7.06 g/t Au FEASIBILITY STUDY HIGHLIGHTS(22) Mine Life ~8.5 years Average Annual Gold Production (2028-2032 Post Lone Tree Commissioning) ~75koz @ AISC (11) $1,915/oz* $2,750/oz Gold Price After-Tax NPV(5%) (2) $118M After-Tax Cash Flow(2) $153M $4,500/oz Gold Price After-Tax NPV(5%) (2) $598M After-Tax Cash Flow(2) $744M Latest Technical Report September 2026 Feasibility Study(22) Next Steps 2026 Guidance: 30,000 – 40,000 oz Au(1) 2027: Continued exploration and infill drilling Note: NPV and cash flows include a $49M allocation charge for Lone Tree Plant. Excludes Lone Tree Capital Allocation Based on the results of two technical reports: i) prepared under National Instrument 43-101 constituting a feasibility study; and ii) prepared under S-K 1300 constituting a pre-feasibility study. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (2)(9)(10)(11)(22) See Endnotes 2, 9, 10, 11 and 22 in Appendix *Five-year steady-state period following Lone Tree plant commissioning (2028-2032). Excludes Lone Tree Plant refurbishment capital allocation. All reported underground mineral reserves are fully attributable to the Company. Reported underground mineral resources for the Granite Creek Property are 100% attributable to the Company with the exception of two royalty claims, which are 91.67% attributable to the Company.
Slide 12 — Feasibility Study
i-80 GOLD CORP | 12 • Feasibility Study published September 2026 • Reserves & resources now include the South Pacific zone • Maiden UG reserve of 556k oz Au • Additional upside expansion potential for UG R&R with many existing strong targets GC UG Resource • Gold price $3,000/oz ($2,175/oz PEA) • Resource expansion with the SPZ domain • Very strong resource conversion and upgrading of Ind->Meas and Inf->Ind categories • Reflection of successful drilling campaign for infill and expansion GC UG Reserve • Gold price $2,500/oz • M&I resources to P&P reserve conversion rate ~65% • Achieved greater confidence in known R&R inventory • De-risking of Au oz profile & cashflow models • Associated decrease in grade mainly attributed to differences in Au mineralization modeling resulting in larger grade shells (incorporating modeling-internal dilution) Reported on a 100% attributable basis GRANITE CREEK UNDERGROUND Feasibility Study Reserves & Resources PEA vs FS Mineral Resource Comparison(3) Note to chart above: The FS applies a base case gold price assumption of $2,750/oz, compared with $2,175/oz in the PEA.(1) Classification Domain Tonnage kt Au g/t Au koz Ogee 231 7.88 59 Otto 310 6.69 67 SPZ 65 9.85 21 Total 606 7.49 146 Ogee 322 7.06 73 Otto 746 6.26 150 SPZ 2,055 7.42 490 Total 3,122 7.11 714 Ogee 553 7.40 132 Otto 1,056 6.39 217 SPZ 2,120 7.50 511 Total 3,729 7.17 859 Ogee 39 6.70 8 Otto 425 7.63 104 SPZ 429 6.53 90 Total 893 7.06 203 Granite Creek UG Resource Measured Indicated M&I Inferred Classification Domain Tonnage kt Au g/t Au koz Ogee 71 9.34 21 Otto 171 7.04 39 SP 40 11.21 14 Stockpile 26 7.32 6 Total 308 8.13 81 Ogee 88 7.95 22 Otto 366 6.70 79 SP 1,437 8.11 375 Total 1,890 7.83 476 Ogee 158 8.57 44 Otto 537 6.81 118 SP 1,477 8.19 389 Stockpile 26 7.32 6 Total 2,198 7.87 556 Proven + Probable Granite Creek UG Reserve Proven Probable
Slide 13 — Continuous Improvement Initiatives – 2 Key Opportunities
i-80 GOLD CORP | 13 Reconciliation • Short-term block model performing very well to grade control sampling (assays) Ore Screening Improves Grade Processed • January 2026 to August 2026 Actual: • 23% lower tonnes, 24% grade improvement Opportunities • Improved reconciliation workflow and metrics by expanding our current workflow to better track material from UG → above ground stockpiles → processing facility → processed tonnes/grade processing • Optimize on-site ore screener • Improved grade control sampling of windrow piles Photo: GC windrow piles at bottom of pit near portal 1) Ore Screening Opportunity Opportunity to increase grades compared to the feasibility study, as well as improve costs due to reduce tonnes trucked and processed 2) Grade Control Sampling Opportunity Opportunity to improve representativity and accuracy of windrow sampling (grade control samples) to better control ore and waste material management, along with improved data to inform model grade estimation. First phase of testing complete and ready for implementation. Photo: GC on-site ore screener GRANITE CREEK UNDERGROUND Continuous Improvement Initiatives – 2 Key Opportunities
Slide 14 — On Track to Meet 2026 Production Guidance
i-80 GOLD CORP | 14 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 compared to the block models per level since the beginning of the mine as delineation increases to ~40’ spacing • Challenging ground conditions continue, remediation: • Long Term - Lower water table to reduce contact water • Increase ore faces available for mine plan flexibility • Increase planning/equipment for the required short rounds (4’) in challenging areas GRANITE CREEK UNDERGROUND On Track to Meet 2026 Production Guidance • Current infrastructure is expanding to maintain anticipated water in-flows; long term solution is to draw down the water table and place it into the RIBs through treatment • The second Water Treatment Plant (WTP#2) is operating and ramp-up to streamline throughput to maximum capacity. • Personnel steady state ~100 SMD employees, target is ~120 employees to increase production levels up to 1,000 tons/day in future as per the September feasibility study • Significant upside for exploration
Slide 15 — Significant Resource Expansion Potential
i-80 GOLD CORP | 15 • Muti-year infill and step-out drilling program currently underway GRANITE CREEK UNDERGROUND Significant Resource Expansion Potential See Disclaimer Regarding Forward-Looking Statements & referenced technical reports (1) See Endnote 1 in Appendix *As at December 31, 2025. Reserves & Resources Within Ogee & South Pacific Zones Change in Mineral Resource Inventory (PEA to Feasibility Study) Classification Tonnage Mt Au g/t Au koz Au koz (PEA) Oz % Change vs March 2025 PEA* Measured 0.61 7.49 146 37 +295% Indicated 3.12 7.11 714 224 +219% Measured & Indicated 3.73 7.17 859 261 +229% Inferred 0.89 7.06 203 326 -38% Proven & Probable 2.20 7.89 557 - - $3,000/oz Au resource & $2,500/ oz Au reserve • Potential for continued expansion to the north and at depth
Slide 16 — Future Exploration Focus
i-80 GOLD CORP | 16 • +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 depth - exploration potential under alluvial r to east Future Exploration Focus: 1. CX pit open at depth along CX fault where higher- grades occur 2. Rangefront and Ogee faults at depth 3. Intersection of the South Pacific/Rangefront faults and Mag fault structures 4. Rangefront/Adam Peak/SPZ structures in HW of Mag fault following-up on Homestake intercepts 5. North Target shares many similarities to TR (Multiple NE fault structures) GRANITE CREEK UNDERGROUND Future Exploration Focus We expect these programs to grow the existing resource and extend mine life.
Slide 17 — 1) CX Zone: Opportunity Beneath Historic Pit
i-80 GOLD CORP | 17 1) CX Zone: Opportunity Beneath Historic Pit GRANITE CREEK UNDERGROUND 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 underground resource or reserves • Potential to bring this zone into reserves and the mine plan with infill drilling, allowing for additional available faces for production – Numerous high-grade intercepts across the CX Zone – 36.4 g/t Au over 9.1 m – 18.0 g/t Au over 9.1 m – 15.3 g/t Au over 9.1 m • Potential for further expansion to the north and at depth • Program is expected to include exploration drift to the zone and approximately 10,000 meters of drilling Ogee CX Pit A A’
Slide 18 — 2) Rangefront and Adam Peak
i-80 GOLD CORP | 18 GRANITE CREEK UNDERGROUND 2) Rangefront and Adam Peak CX Pit A A’ 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
Slide 19 — 3) Ogee Zone
i-80 GOLD CORP | 19 CX Pit A A’ 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 GRANITE CREEK UNDERGROUND 3) Ogee Zone
Slide 20 — 4) South Pacific Zone
i-80 GOLD CORP | 20 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 South Pacific Zone; recent intercepts include – 40.4 g/t Au over 13.2 m – 31.3 g/t Au over 7.8 m – 10.3 g/t Au over 21.1 m A’ A GRANITE CREEK UNDERGROUND 4) South Pacific Zone
Slide 21 — 5) South Pacific Zone, Rangefront and Mag Intersection
i-80 GOLD CORP | 21 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 GRANITE CREEK UNDERGROUND 5) South Pacific Zone, Rangefront and Mag Intersection
Slide 22 — Granite Creek Dewatering
i-80 GOLD CORP | 22 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 • Treatment of contact water will commence in October and ramp up through EOY 2 New Wells Anticipated to be Online By End of October • Production will head off natural groundwater gradient North of UG • GCW-14 anticipated @ 1,000 gpm • GCW-15 anticipated @ 500 gpm • Both wells are spotted localized to the planned UG development for optimal impacts to passive inflows − Increased dewatering near SPZ and planned LOM development − Predictive model runs indicate ~80% efficiency for decreasing passive in-flows with both wells running Water Treatment Plant 2 GRANITE CREEK UNDERGROUND Granite Creek Dewatering GCW-14 Development GCW-15 Drilling Water Treatment Plant 2
Slide 23 — Underground Water Management Improvements
i-80 GOLD CORP | 23 • 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 infrastructure to allow for increased contact water treatment • Repurposing exploration and production boreholes for groundwater monitoring equipment installations − Increased data, proximal to current UG ops, will allow for continued refinement of the local scale modeling • Targeted r holes in active headings to decrease the effects of hydraulic heads near planned development GRANITE CREEK UNDERGROUND Underground Water Management Improvements Stand-Pipe Piezometer 4191 Granite Creek from GMWCX-2 Pad
Slide 24 — GRANITE CREEK OPEN PIT
i-80 GOLD CORP | 24 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: The Granite Creek Property technical study published on September 21, 2026 focused solely on feasibility-level technical work and economics for Granite Creek underground with an updated mineral resource estimate for Granite Creek open pit only. Previously reported 2025 PEA economics for Granite Creek open pit are therefore no longer applicable and subject to pending updated technical studies. Mineral resource estimate updated with Granite Creek technical study filed September 21, 2026. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (2)(11)(12) See Endnotes 2, 11 and 12 in Appendix Reported underground and open pit mineral resources for the Granite Creek Property are 100% attributable to the Company with the exception of two royalty claims, which are 91.67% attributable to the Company. i-80 GOLD CORP | 24
Slide 25 — Ongoing Technical Trade Off Analyses to Optimize Economics
i-80 GOLD CORP | 25 Large High-Grade, Low-CAPEX Open Pit Project • Former producing mine with substantial existing infrastructure • Large portion (95%) of resource in M&I category significant oxide and transitional mineralization remains below and adjacent to historic pits • Technical work and trade-off analyses underway aimed at optimizing project economics and advance the project towards Pre-Feasibility • Additional state and federal permits required (anticipating an Environmental Impact Statement) with aim to successfully permit within ~3 years – early-stage pre-permitting activities ongoing GRANITE CREEK OPEN PIT Ongoing Technical Trade Off Analyses to Optimize Economics Granite Creek Open Pit Layout Next Steps • Pre-Feasibility Study: Timeline Under Review
Slide 26 — Technical Work Underway
i-80 GOLD CORP | 26 • OP Resources updated for the gold price alongside Granite Creek UG feasibility study. MI&I increased by 12% • Optimization and sensitivities completed across three processing scenarios • Surface infrastructure layouts designed for all scenarios to support permitting and field work planning • HL and CIL processing methods selected for further evaluation due to max NPV output in trade off study. • Field work plan underway for confirming surface infrastructure locations placement for PFS • Detailed processing design to commence at conclusion of geotechnical field work programs Property Boundary Tailings Facility CIL Plant & Crushers New/reclaimed Disturbance WRSA HL LG Stockpiles CIL LG Stockpiles GRANITE CREEK OPEN PIT Technical Work Underway Ponds
Slide 27 — Open Pit Technical Drilling
i-80 GOLD CORP | 27 • 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 critical to the existing resource • Important to develop better understanding of the oxide-sulfide boundary and transition zone Program Purpose Surface drill program Geotech & Met programs, increase in resource confidence GRANITE CREEK OPEN PIT Open Pit Technical Drilling
Slide 28 — Permitting
i-80 GOLD CORP | 28 Permitting Actions • Operational needs minor modification • Bureau Land Management (BLM) National Environmental Policy Act (NEPA) Permitting • State Water Pollution Control Permitting applications • Reclamation Permit Modification • Air Quality Permit Revision(s) • Tailings Facility (State permitting) GRANITE CREEK OPEN PIT Permitting Overview • Open pit expansion of the A, B, C, CX, & Mag Pits + associated dewatering • On-site processing Key Considerations • Mine dewatering management • Pit lake geochemistry • Transition needs (UG to Open Pit) • Granite Creek re-route • Sage grouse credit acquisition
Slide 29 — RUBY HILL
RUBY HILL PROPERTY i-80 GOLD CORP
Slide 30 — Background
i-80 GOLD CORP | 30 East Archimedes Pit Blackjack (skarn – not in feasibility study) Archimedes Underground Mineral Point Open Pit Upper 426 300 m Ruby Deeps Zone Lower 426 RUBY HILL PROPERTY Background Archimedes Underground • Under development; first ore expected to be mined in Q4 2026 • High grade Carlin type mineralization, with oxide mineralization in the upper zone. Mineral Point • PFS stage • Primarily oxide, Au-Ag mineralization East Archimedes Pit • Legacy open pit mine Archimedes (FS) and Mineral Point (PFS) technical study expected completion ~mid 2027 Dominant land position in Eureka Mining District ~250 km to Lone Tree Plant via road
Slide 31 — ARCHIMEDES UNDERGROUND
i-80 GOLD CORP | 31 i-80 GOLD CORP | 31 ARCHIMEDES UNDERGROUND Status Construction Indicated Mineral Resource(13) 436koz @ 7.6 g/t Au Inferred Resource(13) 988koz @ 7.3 g/t Au Based on the results of the Preliminary Economic Assessment filed March 31, 2025. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (2)(11)(13) See Endnotes 2, 11 and 13 in Appendix PEA HIGHLIGHTS Mine Life ~10 years Average Annual Gold Production (following ramp-up) ~100koz @ AISC (11) $1,893/oz $2,175/oz Gold Price After-Tax NPV(5%) (2) $127M After-Tax IRR(2) 23% After-Tax Cash Flow(2) $212M $2,900/oz Gold Price After-Tax NPV(5%) (2) $581M After-Tax IRR(2) 75% After-Tax Cash Flow(2) $902M Next Planned Technical Study Approx. Mid-2027 Feasibility Study
Slide 32 — i-80’s Second Planned Underground Mine
i-80 GOLD CORP | 32 OPEN PROPOSED DEVELOPMENT TIMELINE 2026 2027 2028+ CONSTRU- CTION STOCKPILE / HEAP LEACH PRODUCTION 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 – defining oxide-sulfide transition – confirming continuity – refining mine plan Anticipated Next Steps • Q4 2026: First Gold From Upper Archimedes • Approx. mid-2027: Anticipated Feasibility Study Completion ARCHIMEDES UNDERGROUND i-80’s Second Planned Underground Mine 426 Zone Ruby Deeps
Slide 33 — Development Advancing on Schedule
i-80 GOLD CORP | 33 • Underground development commenced in September 2025 • Favorable ground conditions have supported strong contractor performance • Mining contractor currently ramping up workforce for production mining • Vent Raise 1 completed: 177-ft raise bore, 14-ft diameter • Vent Raise 2 under development: 160-ft, 14-ft diameter: raise will provide secondary egress necessary for ore production • 5600 Exploration platform completed in June 2026 • Backfill plant commissioned • Backfill aggregate crushing planned to start in November • Lined stockpile complete • Mine Dry (change house and administration offices) in the detailed design stage – construction currently scheduled for completion in Q3 2027 Archimedes UG Portal Yard Vent Raise 1 raise bore drilling Archimedes decline development ARCHIMEDES UNDERGROUND 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
Slide 34 — Development
i-80 GOLD CORP | 34 • Revised mine planning includes underground drilling in upper 426 Zone • Results show increased oxide mineralization which can be placed on the active Ruby Hill leach pad • Increased oxide eliminates the need to toll mill sulfide mineralized material prior to Lone Tree autoclave commissioning • Sulfide (refractory) material is expected to be stockpiled ahead of Lone Tree’s commissioning Archimedes underground mine design, October 2026 Isometric view, looking west ARCHIMEDES UNDERGROUND Development 5,100’ amsl Upper 426 Zone Lower 426 Zone Ruby Deeps Zone
Slide 35 — Upper 426 Zone Delivers High-Grade Infill Results
i-80 GOLD CORP | 35 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 geological model – demonstrates continuity, scale and potential to extend mineralization beyond boundaries defined by 2025 PEA mineral resource estimate Potential Oxide Upside • Intersected substantial oxide mineralization not included in 2025 PEA • Metallurgical test work underway to evaluate potential mine plan integration • Existing permitted and operating heap leach pad + Lone Tree Plant planning for high-grade oxide material to be heap leached and / or bypass the autoclave through the Plant’s CIL circuit Lower 426 & Ruby Deeps Drilling Commenced Q2 2026 • Targeting ~55,000 m over 140 drill holes Highlights* • 24.6 g/t Au over 23.6 m in hole iAU26-05 (sulfide) • 21.9 g/t Au over 20.2 m in hole iAU26-11 (sulfide) • 16.2 g/t Au over 56.4 m in hole iAU26-09 (sulfide) • 10.2 g/t Au over 36.4 m in hole iAU25-09 (sulfide) • 8.0 g/t Au over 46.4 m in hole iAU26-01 (sulfide-oxide) *True widths are estimated between approximately 40% - 65% of core width. iGU26-17 5.4 g/t Au – 56.5 m (oxide) 15.0 g/t Au – 8.8 m (sulfide) 3.2 g.t Au – 30.8 m (oxide)
Slide 36 — 426 Zone – Heap Leaching Test Work
ARCHIMEDES UNDERGROUND 426 Zone – Heap Leaching Test Work Current Test Work at McClelland (Column Tests) 2026 Test Work at KCA (Coarse and Fine Bottle Roll Tests) Composite Avg. Grade (g/t) 50 mm (%) 25 mm (%) 1.70 mm (%) 75 µm (%) Avg. (%) Blend 4.82 82 84 82 88 84 High Grade 9.07 91 91 91 93 92 Transition 3.36 53 54 57 58 56 High-High Grade 11.00 84 87 90 90 88 Bottle Roll Test Gold Extraction • Gold extraction does not vary significantly at finer particle sizes • Gold extraction is inversely proportional to sulfide sulfur at all feed sizes • Highly defined oxide/sulfide boundary in the deposit → low quantity of transition material • Percolation tests were all passing, with and without cement addition Historic Test Work (Column Tests) Sample Crush Size (mm) Grade (g/t) Au Extraction (%) High Grade 25 3.50 90 Low Grade 25 0.69 85 Average 88 Sample Crush Size (mm) Grade (g/t) Au Extraction (%) BRH-95C, BRH-99C 25 0.91 81 BRH-99C, BRH-211C 25 1.87 93 BRH-101C 25 2.40 92 BRH-210C, BRH-211C 25 1.54 93 BRH-213C 25 2.33 84 BRH-214C 25 0.93 91 BRH-214C 25 6.00 84 BRH-212C 25 1.70 89 Average 88 KCA (2009) KCA (2011) • Demonstrated amenability to heap leach gold recovery methods
Slide 37 — Feasibility Study Drilling
i-80 GOLD CORP | 37 • 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 426 and Ruby Deeps zones • Completion of drilling campaign delayed by ~3 months due to drilling rig operator shortages • Drilling in Q4 2025 through Q2 2026 included 40 infill holes in upper 426 zone for 27,500 feet Archimedes Underground – 5600 Exploration Complex ARCHIMEDES UNDERGROUND Feasibility Study Drilling
Slide 38 — Engineering
i-80 GOLD CORP | 38 • 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 • Increased lower-cost oxide processing has potential to reduces economic cut-off grade, increasing total economic ounces • Cut-off grade optimization ongoing; mine plan prioritizes oxide where practical for near term economic benefit • Capital infrastructure and ventilation optimization ongoing for supporting ramp up to ~1,600 tonnes per day at Lone Tree’s anticipated commissioning Surface Layout 426 Zone MRE Update March 2025 PEA MRE ARCHIMEDES UNDERGROUND Engineering
Slide 39 — 5-Year Execution Sequence
i-80 GOLD CORP | 39 ARCHIMEDES UNDERGROUND 5-Year Execution Sequence
Slide 40 — MINERAL POINT OPEN PIT
i-80 GOLD CORP | 40 MINERAL POINT OPEN PIT Status Exploration & Permitting Indicated Mineral Resource(14) 3.4Moz @ 0.48 g/t Au 104.3Moz @ 15.0 g/t Ag Inferred Resource(14) 2.1Moz @ 0.34 g/t Au 91.5Moz @ 14.6 g/t Ag Based on the results of the Preliminary Economic Assessment filed March 31, 2025. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (2)(11)(14) See Endnotes 2, 11 and 14 in Appendix PEA HIGHLIGHTS Mine Life ~17 years Average Annual Gold Equivalent Production (following ramp-up) ~280koz @ AISC (11) $1,400/oz $2,175/oz Gold Price $27.25/oz Silver Price After-Tax NPV(5%) (2) $614M After-Tax IRR(2) 12% After-Tax Cash Flow(2) $1.5B $2,900/oz Gold Price $32.75/oz Silver Price After-Tax NPV(5%) (2) $2.1B After-Tax IRR(2) 27% After-Tax Cash Flow(2) $3.7B Next Planned Technical Study Approx. Mid-2027 Pre-Feasibility Study i-80 GOLD CORP | 40
Slide 41 — PEA Outlines 17-year Mine Life; Strong Potential for Resource Growth
i-80 GOLD CORP | 41 0 50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000 450,000 500,000 0M 20M 40M 60M 80M 100M 120M 140M 160M 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Au oz (Contained / Recovered) Tons Mineral Point PEA LOM Production Profile Processed Tons HL Relocated Tons Waste Tons Au Contained oz Au Recovered oz MINERAL POINT OPEN PIT PEA Outlines 17-year Mine Life; Strong Potential for Resource Growth Processed Strip Ratio (excl. pre-strip) Gold Recovered Gold Recovery 395 Mt 2.9:1 3.53Moz 78% Waste Mined HLP Rehandle Silver Recovered Silver Recovery 1.25Bt 265Mt 72.0Moz 41%
Slide 42 — Key Driver of Growth
i-80 GOLD CORP | 42 2026 2027 2028 2029 2030 2031 PERMITTING & TECHNICAL (TIMING UNDER REVIEW) CONSTRUCTION PRODU -CTION 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 prevented drilling in this area, potential to add ~300 m of width and 1 km of strike to the deposit this area demonstrates the most potential • Two step-out holes to the east intersected – 1.33 g/t Au & 39.2 g/t Ag over 225.5 m – 0.82 g/t Au & 40.1 g/t Ag over 202.7 m (18) See Endnote 18 in Appendix 5 PROPOSED DEVELOPMENT TIMELINE MINERAL POINT OPEN PIT Key Driver of Growth Highlights From Initial Drill Results* • 1.33 g/t Au and 39.2 g/t Ag over 225.6 m in hole iMP26-07 • 1.70 g/t Au and 61.5 g/t Ag over 170.7 m in hole iMP26-23 • 0.82 g/t Au and 40.1 g/t Ag over 202.7 m in hole iMP26-09 • 1.57 g/t Au and 72.5 g/t Ag over 71.6 m in hole iMP26-11 • 0.36 g/t Au and 24.1 g/t Ag over 263.7 m in hole iMP26-32 • 0.85 g/t Au and 87.7 g/t Ag over 93.0 m in hole iMP26-17 • 0.52 g/t Au and 11.5 g/t Ag over 213.4 m in hole iMP26-35 • 0.99 g/t Au and 5.9 g/t Ag over 201.4 m in hole iRH26-05
Slide 43 — Substantial 2026 Infill and Step-Out Drill Campaign Underway
i-80 GOLD CORP | 43 Substantial 2026 Infill and Step-Out Drill Campaign Underway MINERAL PONT OPEN PIT Initial Step-Out Drilling Demonstrates Potential to Expand the Mineralized Footprint • Infill results align with expectations and confirm deep oxidation consistent with the geological model • Initial step-out results suggest potential to extend mineralization by ~1km along strike and 300 m in width • 19 of the 35 initial holes reported were step-out holes beyond the existing mineral resource, half of these step out holes intersected greater than 150 m of gold and silver mineralization* • Mineralization beyond the PEA pit shell represents potential upside in a future resource estimate 2026 Drilling Campaign ~130,000 m of drilling 312 drill holes planned in 2026 to infill currently classified inferred resources to indicated category to support PFS 2026 Drill Hole Locations *See Mineral Point press release issued September 2026 for table of complete drill results. True widths are estimated between approximately 75%-95% of listed width. PEA Pit Shell
Slide 44 — Seven Rigs Currently Drilling
i-80 GOLD CORP | 44 • 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 MINERAL POINT OPEN PIT Seven Rigs Currently Drilling • Budget: $40M - $45M exploration budget + $5M for permitting and technical work(18) in 2026 & 2027 (further $25M available from Franco-Nevada) • Anticipated Pre-Feasibility Completion ~ Mid-2027
Slide 45 — PFS Work Well Underway
i-80 GOLD CORP | 45 MINERAL POINT OPEN PIT 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 to existing county roads and infrastructure • Pit slope geotechnical drilling complete; stability study on going • Infrastructure geotechnical field work (drilling + test pits) commencing mid- October Layout Legend Property Boundary HW 50 Access Road Drainage Greenlink Corridor Ponds Primary Crusher Pinyon Juniper Pine Area Process Plant Area Road to Process Plant External Pit Haul Roads (150ft width) 4 Corners Road /Conveyor Corridor Infrastructure (crushers, SPs, etc) Heap Leach V10 Waste Dump Pad 1 Waste Dump Pad 2 Waste Dump Pad 3 Waste Dump Pad 4 Mineral Point Pit Archimedes Pit Pinyon Juniper Pine Area • Current studies focused on material handling and processing configuration while MRE drilling ongoing • Ongoing metallurgical test work underway to optimize crush size, recovery and gold & silver recovery Planned Surface Layout
Slide 46 — Project Execution Schedule
i-80 GOLD CORP | 46 • 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 • Scheduling pending permitting. Pre-permitting actions underway. Major permitting has not commenced. MINERAL POINT OPEN PIT Project Execution Schedule *Summary schedule of project execution planning and will continue to be refined as engineering and technical programs advance. Anticipated Mineral Point Project Execution Schedule
Slide 47 — Permitting
i-80 GOLD CORP | 47 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 federal permits have been completed and are under review by regulatory agencies • Mineral Point federal permitting actions will be initiated following a Bureau of Land Management Decision on Lower Archimedes
Slide 48 — Permitting
i-80 GOLD CORP | 48 RUBY HILL - MINERAL POINT OPEN PIT Permitting Overview • Complete Lower Archimedes federal permitting prior to initiating Mineral Point Open Pit federal permitting • State Water Pollution Control Permit applications are required for both projects, Lower Archimedes has been submitted • Final approval timelines for federal and state permitting are separate processes Key Considerations • Lower Archimedes NEPA determination will guide Mineral Point timeline • Effects of mine dewatering and ultimate pit lake geochemistry • Available water rights (Mineral Point only) • Cultural resources (Mineral Point only) • Sage grouse credit acquisition • Community engagement is ongoing to prepare for public consultation Permitting Actions • State Water Pollution Control Permit & Plan Amendment for Lower Archimedes • Bureau Land Management (BLM) National Environmental Policy Act (NEPA) Permitting determination for Lower Archimedes • Mineral Point baseline studies • Formal federal & state permitting actions for Mineral Point • Reclamation Permit Modification – Lower Archimedes & Mineral Point Key dates • Lower Archimedes Hydrological Modeling & Geochemical Characterization technical reports, Plan of Operations Amendment + “Assessment of Change” submitted to BLM Q2 2026 −BLM comments received - response submittal planned in coming weeks • Lower Archimedes WPCP Renewal / Modification Application submitted to BMRR Q2 2026 • Mineral Point timelines driven by above actions
Slide 49 — COVE
COVE UNDERGROUND i-80 GOLD CORP
Slide 50 — UNDERGROUND
i-80 GOLD CORP | 50 UNDERGROUND Status Technical Studies & Permitting Indicated Gold Resource(15) 310koz @ 8.2 g/t Au Inferred Resource(15) 1.16Moz @ 8.9 g/t Au Based on the results of the Preliminary Economic Assessment filed March 31, 2025. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (2)(11)(15) See Endnotes 2,11 and 15 in Appendix PEA HIGHLIGHTS Mine Life ~8 years Average Annual Gold Production (following ramp-up) ~100koz @ AISC (11) $1,303/oz $2,175/oz Gold Price After-Tax NPV(5%) (2) $271M After-Tax IRR(2) 30% After-Tax Cash Flow(2) $397M $2,900/oz Gold Price After-Tax NPV(5%) (2) $582M After-Tax IRR(2) 52% After-Tax Cash Flow(2) $793M Next Planned Technical Study Q4 2026 Feasibility Study i-80 GOLD CORP | 50
Slide 51 — Future Source of Refractory Feed to The Lone Tree Plant
i-80 GOLD CORP | 51 PEA Mine Plan Includes Helen & Gap Deposits • Located immediately south of Nevada Gold Mines’ Phoenix Cu-Au Mine; ~85 km to Lone Tree autoclave • Ongoing work is focused on: – revising the mine plan, sequence optimization, and cut-off grades using updated gold price assumptions – evaluating capital cost reduction opportunities related to dewatering program in PEA • NEPA activities and permit submittals underway with the BLM in anticipation of an EIS; expected 3-year completion time from effective date of the technical report Extensive Infill Drill Program Completed • High-grade brownfield gold deposits open for expansion down-plunge • 2025: ~41,000 m of infill drilling completed on 30-meter spacing across the Gap and Helen zones are encouraging and consistent with Carlin-style deposits meaning generally high resource to reserve conversion UNDERGROUND Future Source of Refractory Feed to The Lone Tree Plant Next Steps • Q4 2026: Anticipated Feasibility Study Completion
Slide 52 — Permitting
i-80 GOLD CORP | 52 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. Current Status & Next Steps • Finalized all key baseline reports • Final Amended Plan of Operations was submitted in September 2026 • State Water Pollution Control Permit renewal / modifications submitted in July 2026 – initial regulatory comments received • Bureau of Land Management National Environmental Policy Act (NEPA) determination (anticipating an Environmental Impact Statement) • Secure NEPA 3rd party contractor Key Considerations • Proposing no treatment for dewatering • Sage grouse credit acquisition
Slide 53 — LONE TREE
LONE TREE i-80 GOLD CORP
Slide 54 — Refurbishment on Plan for First Gold Pour Target
i-80 GOLD CORP | 54 Proposed Development Timeline 2026 2027 2028+ REFURBISHMENT(4) PROCESSING(4) See Disclaimer Regarding Forward-Looking Statements & referenced technical reports (4) See Endnote 4 in Appendix Central Processing Hub For Three Underground Mines Granite Creek Archimedes Cove LONE TREE PLANT Refurbishment on Plan for First Gold Pour Target Eliminates Reliance on Costly Third-Party Processing Funding Secured & Construction Decision Granted Q1 2026 Recommissioning Unlocks Significant Value i-80 GOLD CORP | 54 • Q4 2026: Initial Construction Commenced • Q4 2027: First Gold Pour Shift to Owner-Operated Processing Expected to Significantly Increase Margins
Slide 55 — New Plant Design Supports a Manageable, Low-Risk Build
i-80 GOLD CORP | 55 LONE TREE PLANT New Plant Design Supports a Manageable, Low-Risk Build ~$13M Invested three years of engineering work for the study through its evolving phases ~315 Construction personnel at peak workforce suggests a relatively low overall construction intensity ~600k Estimated direct construction hours versus greenfield mining projects with 1M+ construction hours • Technically straightforward upgrades for operating efficiency • Limited long-lead equipment time • Experienced team with track record at autoclave facilities at some of Nevada’s largest gold mines Low Execution Risk Engineering Study Completed Q4 2025 Design Throughput ~2,250 tpd Plant Availability 85% Annual Throughput ~825,000 tpa Processing Circuit Refractory Material Integrated POX → CIL Processing Circuit Oxide Material Grind → CIL (POX bypass) Processing Flexibility Potential 5% -10% throughput upside above nameplate for oxide material via POX bypass Plant Capacity
Slide 56 — Scope of Work – Construction Initiated in Q4 2026 as Planned
i-80 GOLD CORP | 56 LONE TREE PLANT Scope of Work – Construction Initiated in Q4 2026 as Planned Oxygen Plant Carbon in Leach POX Autoclave Mercury Abatement Scrubber Water Treatment Refinery Tailings Filtration Tailings Transfer Pad Material Feed Refurbishment Upgrades are Expected to: • Improve process efficiency and operating flexibility • Meet new environmental compliance standards Existing Processing Facility Permitted • Additional permits and renewals required in the normal course for processing and environmental controls in the refurbishment plan
Slide 57 — Project Status
i-80 GOLD CORP | 57 As of October 7th, 2026 LONE TREE REFURBISHMENT PROJECT Project Status Engineering • All permits well advanced – Plant is federally permitted – State-level permits received on schedule for mobilization of site contractors to begin construction for civil and concrete work • Engineering advancing in line with the construction and commissioning schedule • Major safety reviews (HAZOP) complete Procurement and Contracts • ~74% of procurement packages awarded by value – Fabrication ongoing on several packages – Equipment shipments starting this week • ~50% of contracts awarded – All major procurement and contracts expected to be awarded by the end of 2026 providing greater certainty around total project completion cost Refurbishment schedule and costs incurred to date remain in line with the December 2025 Lone Tree engineering study Construction • Bulk demolition complete • Specific demolition and building refurbishment is in progress • Civil and concrete contracts awarded and mobilizing Budget • Cash expenditures to date are trending below the 2026 Company guidance of $140M - $160M • Overall labor costs are ~5% - 10% above initial estimates but within allotted project contingency, reflecting higher wages and incidentals from competitive local Nevada labor market • Total project capital remains as expected • ~10% of the total project contingency drawn down • ~44% of capital committed at the end of Q3 2026
Slide 58 — Extensive Trade-Off Studies Completed to Optimize Project Capital
i-80 GOLD CORP | 58 LONE TREE PLANT Extensive Trade-Off Studies Completed to Optimize Project Capital Capital Cost Summary $Millions Direct Costs POX and POX Utilities $86 Tailings Filtration $50 Reagents and Utilities $39 Neutralization, CIL, Cyanide Destruction $28 Power and Electrical $20 Refinery $16 Grinding Circuit $14 Subtotal Direct Costs $253 Indirect Costs EPCM $66 Construction Indirects $17 First Fills/Freight $8 Subtotal Indirect Costs $91 Total Direct + Indirect Costs $343 Contingency (~12%)(1) $43 Owner's Cost $25 Subtotal Cost (Excluding Capital Spares) $412 Capital Spares $18 Total Estimated Project Cost $430 • Extensive engineering reviews, operating assessments, and trade-off studies completed to – optimize project capital – identify opportunities advance Lone Tree’s development timeline • AACE Class 3 level capital cost definition • Capital estimate supported by ~14,000 cost line items in the control estimate, providing a high level of confidence. • Potential payback period: ~12 - 24 months (depending on grade and gold price)
Slide 59 — Peak: 310 FTE
Copyright © Hatch 2026. All Rights Reserved. Early Works / Refurbishments Concrete Works Building Repairs Structural Steel Installation Demolition Refractory Electrical, Piping and Instrumentation Refractory Installation 333 267 200 133 67 Earthworks / Structural Excavation / Backfill Plateworks and Tanks Installation Demolition Works Peak: 310 FTE
Slide 60 — BENCHTOP AUTOCLAVE TEST WORK SUMMARY
BENCHTOP AUTOCLAVE TEST WORK SUMMARY Zone Number of Tests at Lone Tree Conditions Average Au Recovery at Lone Tree Conditions (%) Ogee 4 86.6 Otto 4 89.3 South Pacific 9 88.1 Toll-Mill Composite* 17* 91.4* Granite Creek Zone Number of Tests at Lone Tree Conditions Average Au Recovery at Lone Tree Conditions (%) 426 5 96.8 Ruby Deeps 6 90.5 Archimedes Zone Number of Tests at Lone Tree Conditions Average Au Recovery at Lone Tree Conditions (%) Helen 10 90.2 Gap 2 86.4 Cove * Conducted at Turquoise Ridge conditions (Acid POX, 225°C, 460 psi, 60-minute retention time) Lone Tree Acid POX Conditions: • 199°C, 297 psi • 45-minute retention time 2027 PROCESS FEED PLANNING - UNDER REVIEW FOR OPTIMIZATION 1H 2027: SULFIDE OXIDE SULFIDE OXIDE RUBY HILL HEAP LEACH Q3-2027 Until Lone Tree Startup (Q1-2028): SULFIDE OXIDE SULFIDE OXIDE STOCKPILES AT: Granite Creek Ruby Hill Lone Tree RUBY HILL HEAP LEACH PLANT FEED STOCKPILE HEAP LEACH PAD STOCKPILE AT: Ruby Hill Lone Tree LONE TREE SITE Third party processing facility GRANITE CREEK UNDERGROUND ARCHIMEDES UNDERGROUND GRANITE CREEK UNDERGROUND ARCHIMEDES UNDERGROUND
Slide 61 — Dual POX-CIL Processing Flexibility
i-80 GOLD CORP | 61 LONE TREE PLANT Dual POX-CIL Processing Flexibility POX BYPASS (OXIDE MATERIAL) 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 mineralized material to be optimized with the lowest cost and highest recovery rate • Bypassing the POX circuit when processing oxide material has the potential to increase throughput capacity by between 5% to 10% above nameplate capacity i-80 GOLD CORP | 61
Slide 62 — Permitting
i-80 GOLD CORP | 62 LONE TREE PLANT REFURBISHMENT Permitting Overview • Process plant refurbishment for the existing autoclave Permitting Actions • Class I, Class II, and Mercury Operating Permit to Construct air quality operating permits currently under agency review • State Water Pollution Control Permit issued October 2026 • Reclamation Permit and Plan of Operations Amendment under review by Nevada Division of Environmental Protection and Bureau of Land Management 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 modification required for new containment and process solution systems • Additional disturbance required for support and laydown areas
Slide 63 — HEALTH
HEALTH & SAFETY i-80 GOLD CORP
Slide 64 — Occupational Health, Safety & Loss Control
i-80 GOLD CORP | 64 Occupational Health, Safety & Loss Control Worker Protection • Training • Business Partner support and oversight Risk Management • ICMM-aligned Critical Risk Management • Risk-based occupational health monitoring • Change Management • Team-based risk–hazard identification program Loss Control • Operational Procedures • Incident investigations • Corrective action accountability Current Program Worker Protection • Enhancing supervisor skills • Standardized controls across projects and operations • Continued task-based training Risk Management • Strengthening critical control verification • Enhancing occupational health risk controls to align with changed regulatory standards Emergency Preparedness • Upskilling Emergency response to support medical, fire and rescue readiness Program Evolution
Slide 65 — COMMUNITY
COMMUNITY ENGAGEMENT i-80 GOLD CORP
Slide 66 — Working with Local, State and Federal Partners on Community-
i-80 GOLD CORP | 66 i-80 GOLD CORP. Working with Local, State and Federal Partners on Community- Driven and Collaborative Development
Slide 67 — WORKFORCE DEVELOPMENT STRATEGY
i-80 GOLD CORP | 67 WORKFORCE DEVELOPMENT STRATEGY
Slide 68 — i-80 GOLD CORP | 68
i-80 GOLD CORP | 68 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.
Slide 69 — APPENDIX
APPENDIX i-80 GOLD CORP
Slide 70 — Capital Overview
i-80 GOLD CORP | 70 COMPANY OVERVIEW Capital Overview Research Coverage Analyst ATB Cormark Securities Richard Gray Canaccord Genuity Peter Bell Freedom Broker Vitaly Kononov National Bank Don DeMarco RBC Capital Markets Harrison Reynolds SCP Resource Finance Justin Chan Ventum Capital Markets - Rank Institution As of October 6, 2026 S/O % Location 1 Condire Management 9.5 United States 2 Libra Advisors LLC 7.4 United States 3 Daniel Kaufman 6.0 Puerto Rico 4 Sprott Asset Management 4.4 Canada 5 Vanguard Capital Management 3.2 United States 6 Van Eck Associates Corporation 2.3 United States 7 T. Rowe Price Associates 2.2 United States 8 Pale Fire Capital SE 2.2 Czech Republic 9 Tidal Investments 2.2 United States 10 Nokomis Capital 2.1 United States 11 Trek Financial 1.4 United States 12 Two Sigma Investments 1.3 United States 13 Principality of Liechtenstein 0.8 Liechtenstein 14 ALPS Advisors 0.8 United States 15 Credit Mutuel Asset Management 0.7 France As of October 6, 2026 Ticker Symbols TSX: IAU CAD NYSE American: IAUX USD 52-Week Range $1.25-$3.04 $0.88-$2.24 Share Price $2.30 $1.61 Average Daily Volume (90 day) 0.8M 9.6M Market Cap $2.0B $1.4B As of August 10, 2026 Shares Issued & Outstanding1 861.0M Warrants2 204.5M Options 8.0M Restricted Share Units 15.5M Performance Share Units 11.3M Deferred Share Units 1.8M Convertible Debentures3 149.4M Fully Diluted4 1.25B Cash $465M Debt5 $438M 1. Includes 346M units issued upon closing of a bought deal public offering on May 16, 2025, and 22M units upon closing of a concurrent private placement on May 26, 2025. 2. Warrants include: (i) warrants issued May 2024 trading on the TSX (IAU.WT) exercisable at C$2.15 until May 1, 2028; and (ii) warrants issued in May 2025 trading on the TSX (IAU.WT.U) and on the NYSE American (IAUX.WS), exercisable at US$0.70 until November 16, 2027. 3. On March 23, 2026, the Company issued $288M principal amount of unsecured senior convertible debentures with a 3.75% coupon payable semi-annually, maturing April 15, 2031, for $275M of net proceeds after $13M of issuance costs. The debentures are convertible at 519.4805 shares per $1,000 principal, implying an initial conversion price of ~$1.93/share. 4. Assumes the exercise or redemption of all outstanding warrants, convertible debentures, RSUs, PSUs, options, and DSUs of the Company. 5. Debt of $438M includes: $275M 2026 Convertible Debentures, $145M 2026 Gold Prepay, $18M Silver Purchase Agreement liability, and $0.7M other debt; excludes NSR royalty, warrant liability, lease liabilities, and other liabilities. Other liabilities of $316M include: $232M NSR Royalty, $48M Silver Purchase Agreement embedded derivative, $24M warrant liability, $8M share-based payment liability, and $4M lease liability.
Slide 71 — Mineral Resources
i-80 GOLD CORP | 71 Mineral Resources Attributable to i-80 Gold Corp. MINERAL RESOURCE ESTIMATE Tonnes Gold Grade Silver Grade Gold Ounces Silver Ounces (kt) (Au g/t) (Ag g/t) (koz) (koz) Proven Granite Creek – Underground(10)(20)* 308 8.13 81 Probable Granite Creek – Underground(10)(20)* 1,890 7.83 476 TOTAL PROVEN & PROBABLE 2,198 7.87 556 Measured Granite Creek – Open Pit(12)* 33,546 1.05 1,136 Granite Creek – Underground(9)* 606 7.49 146 Lone Tree – Open Pit(17) – Underground(15) Ruby Hill – Mineral Point Open Pit(14) Ruby Hill – Archimedes Underground(13) Indicated Granite Creek – Open Pit(12)* 11,339 1.01 369 Granite Creek – Underground(9)* 3,122 7.11 714 Lone Tree - Open Pit(17) 7,690 1.73 428 – Underground(15) 1,177 8.20 15.0 310 568 Ruby Hill – Mineral Point Open Pit(14) 216,982 0.48 15.0 3,376 104,332 Ruby Hill – Archimedes Underground(13) 1,791 7.60 1.6 436 92 Ruby Hill – Archimedes Open Pit(16) 4,320 1.96 10.6 272 1,490 TOTAL MEASURED & INDICATED 286,960 0.79 14.81** 7,273 106,482 Inferred Granite Creek - Open Pit(12)* 3,826 0.81 100 Granite Creek – Underground(9)* 893 7.06 203 Lone Tree - Open Pit(17) 52,940 1.64 2,789 – Underground(15) 4,047 8.90 11.1 1,156 1,439 Ruby Hill – Mineral Point Open Pit(14) 194,442 0.34 14.6 2,117 91,473 Ruby Hill – Archimedes Underground(13) 4,188 7.30 2.1 988 286 Ruby Hill – Archimedes Open Pit(16) 870 1.12 8.5 31 250 TOTAL INFERRED 261,206 0.88 14.25** 7,384 93,448 Notes to Table: (9)(10)(12)(13)(14)(15)(16)(17) Refer to the related Endnotes in the Appendix for the notes to the following mineral resource estimates, such as classification, cutoff grades, reporting standards, and relevant assumptions. Effective Dates – Granite Creek underground & open pit effective March 31, 2026. – All other projects effective December 31, 2024, as disclosed in the PEAs filed in March 2025, which does not reflect depletion from mining activities during 2025. The Company produced 28,196 ounces of gold for the year ended December 31, 2025. A Mineral Resource Comparison table presenting the mineral resources as of December 31, 2024 and December 31, 2025 is available on page 42 of the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025. *All reported mineral reserves for Granite Creek underground are fully attributable to the Company. All reported Granite Creek underground and open pit mineral resources are 100% attributable to the Company other than one fee parcel and unpatented mining claims held by a third-party, which resources are 91.67% attributable to the Company **Silver weighted average grade calculated on tonnes having silver grade and ounces. Reported table numbers have been rounded as required by reporting guidelines and may result in summation discrepancies.
Slide 72 — Endnotes
i-80 GOLD CORP | 72 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, Archimedes underground, and underground when using a gold price assumption of $3,600 per ounce for the purposes of anticipated cash flow from operations. While the economics of the latest technical studies were completed using a gold price assumption of $2,175 per ounce with gold price sensitivities of up to $3,000 per ounce, a gold price assumption of $3,600 per ounce is in line with current long term consensus prices. These anticipated output figures are preliminary in nature and are based on mineral resources, which do not have demonstrated economic viability, and are not mineral reserves. In addition, each of the foregoing technical reports are preliminary economic assessments/initial assessments that are preliminary in nature and each include an economic analysis that is based, in part, on inferred mineral resources. Inferred mineral resources are considered too speculative geologically to have for the application of economic considerations applied to them that would enable them to be categorized as mineral reserves. As such, there is no certainty that the output targets will be realized. The anticipated output targets are also pending the refurbishment and commissioning of the Lone Tree Plant. The output targets presented herein are Company goals and not a projection of results and should not be taken as output guidance. All of the Company’s projects other than Granite Creek underground are considered exploration stage projects under S-K 1300, as the Company has not determined mineral reserves at such properties pursuant to S-K 1300. With respect to Archimedes underground, located on the Ruby Hill property, the Company has started extraction activities without determining mineral reserves. The Company believes it has sufficient secured and committed capital to fund Granite creek underground development and Archimedes underground projects under its current development plan. Once Lone Tree is commissioned, these two projects are expected to generate sufficient operating cash flow to help support the funding of the Mineral Point in addition to funding from secured and committed capital. The Company is in dialogue with lenders for corporate revolver for Mineral Point, if needed. The following technical reports for each project and related property have been prepared in accordance with NI 43-101: Preliminary Economic Assessment Technical Report for the Project, Lander County, Nevada (March 31, 2025); NI 43-101 Technical Report Feasibility Study Granite Creek, Humboldt County, Nevada, USA for Granite Creek, Humboldt County, Nevada, USA (September 21, 2026); and Preliminary Economic Assessment NI 43-101 Technical Report for the Ruby Hill Project, Eureka Country, Nevada, USA (March 31, 2025). Corresponding technical reports prepared in accordance with S-K 1300 are as follows: Initial Assessment & Technical Report Summary for the Project, Lander County, Nevada (March 26, 2025); S-K 1300 SEC Technical Report Summary Pre-Feasibility Study Granite Creek, Humboldt County, NV (September 2026); and Initial Assessment of the Ruby Hill Project, Eureka County NV (March 29, 2025). 2) For the Archimedes Underground Project, cash flow and Net Present Value (“NPV”) are calculated as of the start of construction, which is anticipated to commence in early in the second quarter 2025, subject to obtaining the necessary permits by March 31, 2025, as anticipated. After tax metrics for Archimedes Underground assumes the Company consume existing net operating losses. For the Granite Creek Underground Project, cash flow and NPV are calculated as of May 1, 2026. For the Granite Creek Open Pit Project, cash flow and NPV were not calculated within the project economics presented in the September 2026 Granite Creek technical studies in respect of the Granite Creek open pit, other than an updated mineral resource estimate, which remains subject to separate ongoing technical studies and permitting activities. For the Mineral Point Open Pit Project, cash flow and NPV are calculated as of the start of construction, which is anticipated to commence in early 2030, subject to obtaining the necessary permits by December 31, 2029, as anticipated. After tax metrics for Mineral Point assumes the Company consume existing net operating losses. For the Project, cash flow and NPV are calculated as of the start of construction, which is anticipated to commence in January 2028. Further information about the updated PEAs referenced in this presentation including information in respect of data verification, assay procedures , the quality assurance program, quality control measures, key assumptions, parameters, risks and other factors, are contained in each respective PEA filed by the Company and which are available on EDGAR at www.sec.gov/edgar, SEDAR+ at www.sedarplus.ca, and the Company’s website at www.i80gold.com. The PEAs in respect of Archimedes Underground, Mineral Point Open Pit, Cove, and Granit Creek Open Pit are each preliminary in nature and each includes an economic analysis that is based, in part, on inferred mineral resources. Inferred mineral resources that are considered too speculative geologically to have for the application of economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the results of each PEA will be realized. Mineral resources do not have demonstrated economic viability and are not mineral reserves. 3) Gold equivalent ounces (AuEq oz) defined as recovered Au oz plus recovered Ag oz times the price ratio of Ag to Au. AuEq = Au recovered oz + [(Ag recovered oz) x ($27.25/$2,175)]. LOM overall recoveries for Au and Ag are 78% and 41% respectively. Production defined as process recovered ounces. 4) Pending the successful funding, refurbishment completion, and commissioning of the Company’s Lone Tree autoclave and carbon-on leach processing facility in 2028 as planned. 5) In May 2025, the Company completed a public offering of 345,760,000 units at $0.50 per unit for gross proceeds of $172,880,000, including exercise of the over-allotment option. Each unit consisted of one common share and one-half of one common share purchase warrant exercisable at $0.70 until November 16, 2027. A concurrent private placement for 22,240,000 units under the same terms generated $11,120,000 for aggregate gross proceeds of approximately $184,000,000, with up to $130,000,000 in additional proceeds assuming full exercise of the related warrants over the next 18 months. 6) With the closing of the gold prepayment facility with National Bank and Macquarie Bank announced by press release on February 12, 2026, the Company received $150 million in initial funding and has the obligation to deliver 39,978 ounces of gold over a 30-month period beginning in January 2028. The accordion feature provides access to an additional $100 million for a 24-month period from closing, subject to customary conditions and lender approval. The Company anticipates executing the accordion feature in the first half of 2027, at which point the number of additional gold ounces to be delivered will be determined. 7) The proceeds of the financing package of up to $500 million announced by press release on February 12, 2026 (the “Financing Package”) was used to retire all of the Company’s existing debt obligations, including approximately $95 million to settle the Gold Prepay Agreement and the Convertible Loan with Orion Resource Partners (across various funds) with the exception of a Silver Purchase and Sale Agreement held by Orion Mine Finance Fund III (HG) Ltd. Additionally, Convertible Debentures amounting to approximately $86 million were retired from the proceeds of the Financing Package. Convertible Debenture holders had the right to elect to convert accrued interest into i-80 Gold common shares. 8) Turquoise Ridge Complex measured and indicated mineral gold resources are estimated at approximately 19.3 million ounces (approximately 117 Mt at 5.14 g/t Au), and inferred mineral gold resources are estimated at approximately 2.4 million ounces (approximately 29 Mt at 2.6 g/t Au) as at December 31, 2025, derived from Barrick Mining Corporation’s reported 61.5% attributable mineral resources for the Turquoise Ridge Complex as disclosed in its 2025 mineral reserve and mineral resource tables. Barrick owns 61.5% and operates Nevada Gold Mines, while Newmont Corporation owns the remaining 38.5%. No qualified person of the i-80 Gold has independently verified any mineral resource information in respect of the Turquoise Ridge Complex contained in this news release and such information is not necessarily indicative of the mineralization on the property subject to such technical reports. Endnotes
Slide 73 — Endnotes continued
i-80 GOLD CORP | 73 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 resources are 91.67% attributable to the Company.1. Mineral Resources, which are not Mineral Reserves, do not have demonstrated economic viability. The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, market or other relevant issues. The deposit has been classified as Measured, Indicated and Inferred based on confidence in the geological model and drill spacing. The quantity and grade of reported Inferred resources are uncertain in nature, and there has not been sufficient work to define these Inferred Mineral Resources as Indicated or Measured resources. There is no certainty that any part of a mineral resource will ever be converted into mineral reserves. 2. Mineral Resources are reported on an inclusive basis with units reported in in Metric Tonnes, grade is reported in grams/tonnes, and metal in 000's troy ounces.3. Mineral Resources are reported within mineable stopes which have been defined based on metal price assumptions,* variable metallurgical recovery assumptions, mining costs, processing costs, shipping, G&A costs. Metal Pricing is based on Gold (US$3,000 /oz). Other key assumptions include: * Mining Costs (US$/t 190.18); * Autoclave Processing Cost (US$/t 131.13), Low-grade Oxide (US$/t 59.94) * Autoclave Recoveries ranging 77.6%-93.4% (average 87.6%) and Oxide recoveries ranging 60.0%-87.4% (average 68.9%); * Shipping Costs (US$/t 16.04) and G&A Costs (US$/t 22.29); * Totaling US$/t 281.45 – 359.64 for underground mining and processing; * Based on the variable recoveries an average cut-off grade of 3.75 - 9.81 g/t (0.286 oz/st) has been used reporting.4. Mineral Resources have been depleted for previous underground mining activity, and reported on an attributable basis. 5. Mineral Resources are based on validated data, which have been subjected to quality analysis/quality control (QA/QC) analysis, using capped, composited samples at 2 m (5ft) intervals. Estimation has been completed using a combination of OK and IDW estimation methodologies and classified based on confidence in the underlying data and drill spacing. Mineral resource tonnages have been rounded to reflect the precision of the estimate. 6. The Mineral Resources were estimated by Benjamin Parsons, BSc, MSc Geology, MAusIMM (CP#222568) of SRK Consulting, U.S. (Inc.), a Qualified Person under NI 43-101 and S-K 1300. 7. Rounding of some figures may lead to minor discrepancies in totals. 10) Granite Creek Underground: Notes to Mineral Reserves effective March 31, 2026: All reported underground mineral reserves are fully attributable to the Company. 1.All figures are rounded to reflect the relative accuracy of the estimates. Totals may not sum due to rounding. Mineral Reserves have been stated on the basis of a mine design, mine plan, and economic model. 2.Mineral Reserves are reported using a stope center of gravity (“CoG”) range of 4.42 g/t (0.13 oz/st) Au – 6.41 g/t (0.19 oz/st) Au and an incremental processing CoG range of 1.51 g/t (0.04 oz/st) Au – 2.91 g/t (0.09 oz/st) Au depending on the processing method. The CoG calculations assume a US$2,500/oz Au price, and 60% to 92% metallurgical recovery depending on the processing method applied.3 Operating costs include mining (US$190.18/tonne), processing (US$59.94/tonne to US$131.13/tonne), G&A (US$22.29/tonne), shipping costs (US$16.04/tonne). Additionally, a 6% royalty and 0.75% excise tax are applied, along with treatment/refinery charges of US$1.85/oz Au. 4. The reserves are mined using the underhand drift and fill method with cemented waste rock backfill. Mining dilution of 10% is included in the reserve at zero grade.5. Stockpile mineral reserves reflect ore mined and placed on surface stockpiles prior to the effective date of the FS and not yet processed. 6.The Mineral Reserves were estimated by Anton Chan, B.Eng, M.Sc., P.Eng, MMSAQP (#01546QP) of SRK Consulting, U.S. (Inc.), a Qualified Person under NI 43-101 and S-K 1300. All reported underground mineral reserves are fully attributable to the Company. 11) This is a performance measure commonly used in the gold mining industry that is not defined under United States Generally Accepted Accounting Principles (“US GAAP”). This term should not be considered in isolation or as a substitute for measures prepared in accordance with US GAAP and should be read in conjunction with the Company’s financial statements. Please refer to the “Non-GAAP Financial Performance Measures” section in in this presentation for more information. 12) Granite Creek Open Pit: All reported Granite Creek underground and open pit mineral resources are 100% attributable to the Company. Attributable resources are those resources other than those subject to third party claims in the Pinson #1A- 18A unpatented mining claims and in the Section 28 Fee lands. The September 21, 2026 technical study focused solely on feasibility-level technical work for Granite Creek underground. It does not update the work in the March 2025 PEA in respect of the Granite Creek open pit, which remains subject to separate ongoing technical studies and permitting activities. The updated Granite Creek open pit mineral resource estimate included in the September 2026 technical study accounted for an increase in gold price resulting in a larger optimized pit shell, equating to an increase in the overall open pit mineral resource inventory. 1 The effective date of the Mineral Resources Estimate is March 31, 2026. 2) The Qualified Persons for the estimate are Terre Lane QP-MMSA and Hamid Samari QP-MMSA of GRE. 3) Mineral Resources are not ore reserves and are not demonstrably economically recoverable. 4) Mineral Resources are reported at a 0.20 g/t cutoff, an assumed gold price of 3,000 $/tr. oz, using variable recovery, a slope angle of 41 degrees, 6% royalty, heap leach processing cost $9.04 per tonne (includes admin), CIL processing cost of $17.22 per tonne (includes admin). 13) Archimedes Underground: Underground Mineral Resources have been estimated at a gold price of $2,175 per troy ounce and a silver price of $27.25 per ounce (Section 19.1). Mineral Resources have been estimated using pressure oxidation gold metallurgical recoveries of 96.8% and 89.5% for the 426 and Ruby Deeps deposits respectively. Pressure oxidation cutoff grades are 5.06 and 5.48 Au g/t (0.148 and 0.160 opt) for the 426 and Ruby Deeps deposits respectively. Detailed input mining, processing, and G&A costs are defined in Section 18.1. Units shown are metric. The contained gold ounces estimates in the Mineral Resource table have not been adjusted for metallurgical recoveries. Numbers have been rounded as required by reporting guidelines and may result in apparent summation differences. A Mineral Resource is a concentration or occurrence of solid material of economic interest in or on the Earth’s crust in such form, grade or quality and quantity that there are reasonable prospects for eventual economic extraction. The location, quantity, grade or quality, continuity and other geological characteristics of a Mineral Resource are known, estimated or interpreted from specific geological evidence and knowledge, including sampling. An Inferred Mineral Resource is that part of a Mineral Resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. Geological evidence is sufficient to imply but not verify geological and grade or quality continuity. An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that the majority of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration. Mineral Resources, which are not Mineral Reserves, do not have demonstrated economic viability. The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, sociopolitical, marketing, or other relevant factors. Mineral Resources have an effective date of December 31, 2024. The reference point for Mineral Resources is in situ. Endnotes continued
Slide 74 — Endnotes continued
i-80 GOLD CORP | 74 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 method and processed by heap leaching. Mineral resources are below an updated topographic surface. Mineral resources are constrained to economic material inside a conceptual open pit shell. The main parameters for pit shell construction are a gold price of $2,175/oz Au, a silver price of $26.00/oz, average gold recovery of 77%, average silver recovery of 40%, open pit mining costs of $3.31/tonne, heap leach average processing costs of $3.47/tonne, general and administrative cost of $0.83/tonne processed, gold refining cost of $1.85/oz, silver refining cost of $0.50, and a 3% royalty. Mineral resources are reported above a 0.1 g/t Au cutoff grade. Mineral resources are stated indica as in situ. Mineral resources have not been adjusted for metallurgical recoveries. Reported units are metric tonnes. Prepared under the supervision of, and has been reviewed and approved by Aaron Amoroso, MMSA QP (01548QP) and Jonathan Heiner, P.E., SME-RM (4143808) of Forte Dynamics, Inc, and Tyler Hill CPG., Vice President Geology for the Company, who are all qualified persons within the meaning of NI 43-101 and S-K 1300. 15) Underground Project: Mineral resources have been estimated at a gold price of $2,175 per troy ounce and a silver price of $27.25 per troy ounce; Mineral resources have been estimated using gold metallurgical recoveries ranging from 73.2% to 93.3% for roasting and 78.5% to 95.1 % for pressure oxidation; Roaster cutoff grades range from 4.15 to 5.29 Au g/t (0.121 to 0.154 opt) and pressure oxidation cutoff grades range from 3.83 to 4.64 Au g/t (0.112 to 0.135 opt); The effective date of the mineral resource estimate is December 31, 2024; Mineral resources, which are not mineral reserves, do not have demonstrated economic viability. The estimate of mineral resources may be materially affected by environmental, permitting, legal, title, socio-political, marketing, or other relevant factors; An inferred mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. Geological evidence is sufficient to imply but not verify geological and grade or quality continuity. An inferred mineral resource has a lower level of confidence than that applying to an indicated mineral resource and must not be converted to a mineral reserve. It is reasonably expected that the majority of inferred mineral resources could be upgraded to indicated mineral resources with continued exploration; and the reference point for mineral resources is in situ. Prepared under the supervision of, and has been reviewed and approved by Dagny Odell, P.E., (SME No. 2402150) Practical Mining LLC, and Tyler Hill CPG., Vice President Geology for the Company, who are all qualified persons within the meaning of NI 43-101 and S-K 1300. 16) Archimedes Open Pit: Mineral Resources have an effective date of December 31, 2024. Mineral Resources are the portion of Mineral Point that can be mined profitably by open pit mining method and processed by heap leaching. Mineral Resources are below an updated topographic surface (below Archimedes pit). Mineral Resources are constrained to economic material inside a conceptual open pit shell. The main parameters for pit shell construction are a gold price of $2,175/oz Au, a silver price of $26.00/oz, average gold recovery of 77%, average silver recovery of 40%, open pit mining costs of $3.31/tonne, heap leach average processing costs of $3.47/tonne, general and administrative cost of $0.83/tonne processed, gold refining cost of $1.85/oz, silver refining cost of $0.50, and a 3% royalty (Section 19.1). Mineral Resources are reported above a 0.1 g/t Au cutoff grade. Silver revenues were not considered in the cutoff grade. Mineral Resources are stated as in situ. Mineral Resources have not been adjusted for metallurgical recoveries. Reported units are metric tonnes. Reported table numbers have been rounded as required by reporting guidelines and may result in summation discrepancies. 17) Lone Tree Open Pit: Estimated resources at the end of the fiscal year ended December 31, 2024, is shown in Table 1-1. These mineral resources are estimated using a gold price of $2,175/oz Au and an open pit Cutoff grade of 0.62 g/T Au. More details about the estimated mineral resources are presented in section 14. Mineral resources are not mineral reserves and do not have demonstrated economic viability. 18) Upon closing of the Royalty Financing, $225 million was made available to the Company, of which $25 million is required to be allocated to the advancement of technical and early-stage permitting activities for Mineral Point in 2026. The remaining $25 million of the Royalty Financing is also expected to be made available in 2026 to further advance Mineral Point, following the expenditure of the initial disbursement toward the project. In total, the Royalty Financing allows the Company to allocate $50 million to advance resource expansion and infill drilling, technical and early-stage permitting activities at Mineral Point in 2026. 19) The Company has secured over $1.0 billion in capital since the beginning of 2025 through a combination of financings. This includes (i) approximately $184 million in gross proceeds raised in May 2025 through a public offering and a concurrent private placement, with up to an additional $130 million assuming full exercise of the related in-the-money warrants over the next 18 months, (ii) a $250 million royalty financing with Franco-Nevada (of which $225 million was funded at closing on March 16, 2026 with approximately $165 million used to pay legacy debt obligations, and $25 million remains subject to drawdown conditions), (iii) convertible senior notes issued on March 23, 2026 for an aggregate principle amount of $287.5 million, and (iv) $150 million under the Gold Prepay Facility with National Bank of Canada and Macquarie Bank with an additional $100 million available under an accordion feature, subject to drawdown conditions. 20) The Granite Creek Underground Mineral Reserve estimate is based on the mineral resource estimate depleted through March 31, 2026. The associated reserve mine plan therefore begins April 1, 2026. For purposes of the economic analysis, the reserve schedule was shifted one month such that the economic model begins May 1, 2026. This timing adjustment does not change the Mineral Reserve inventory, mine plan, or scheduled quantities and does not result in double counting of production. 21) Historical drill results were generated by Homestake Mining Company in 1997 and Pinson Mining Company in 1995 and were not generated by i-80 Gold. The results have been reviewed by Tyler Hill, VP Geology for the Company. No Quality Assurance/Quality Control (QA/QC) data is available for these results. These holes were found to be acceptable for use in the 2026 Granite Creek open-pit resource estimate as conducted by Global Resource Engineering (GRE). 22) As described in the Company’s press release dated September 21, 2026, the results disclosed in this presentation regarding the Granite Creek underground are supported by two technical reports: (1) a technical report prepared under National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101") which, in the opinion of the qualified persons, constitutes a feasibility study under NI 43-101 (the "NI 43-101 FS" or the "FS Study"); and (2) a technical report summary prepared under Subpart 1300 of Regulation S-K ("S-K 1300") which, in the opinion of the qualified persons, constitutes a pre-feasibility study under S-K 1300. (the "S-K 1300 PFS" and, together with the NI 43-101 FS, the "Technical Reports"). As a result, the same body of technical work satisfies the definition of a feasibility study under NI 43-101 but constitutes a pre-feasibility study under S-K 1300. The mineral resource and mineral reserve estimates and the project economics presented in the Technical Reports are derived from the same underlying technical and economic work. Endnotes continued
Slide 75 — Non-GAAP and Supplemental Financial Performance Measures
i-80 GOLD CORP | 75 The Company has included certain terms or performance measures commonly used in the mining industry that are not defined under US GAAP in this document. These include adjusted loss, adjusted loss per share, and average realized price per ounce. Non-GAAP financial performance measures do not have any standardized meaning prescribed under US GAAP, and therefore, they may not be comparable to similar measures employed by other companies. The data presented is intended to provide additional information and should not be considered in isolation or as a substitute for measures prepared in accordance with US GAAP and should be read in conjunction with the Company's Financial Statements. "Average realized gold price” per ounce of gold sold is a supplementary financial measure and the calculation is shown in the below table. Non-GAAP and Supplemental Financial Performance Measures "Adjusted loss” and “adjusted loss per share” are non-GAAP financial performance measures that the Company considers to better reflect normalized earnings because it eliminates temporary or non-recurring items such as: gain and losses on fair value measurements, loss on loan extinguishment, loss on Convertible Loans and finance fee expense.. Adjusted loss per share is calculated using the weighted average number of shares outstanding under the basic calculation of earnings per share. Adjusted loss and adjusted loss per share exclude a number of temporary or one-time items detailed in the below table. Adjusted loss was higher for the three months ended March 31, 2026, compared to the prior year period due to increased pre-development, evaluation and exploration expenses partially offset by higher gross profit.