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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,

CREATING A NEVADA-FOCUSED, MID-TIER GOLD PRODUCER October 2026 NYSE: IAUX | TSX: IAU

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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.

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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. **Source: Fraser Institute Annual Survey of Mining Companies, 2025. (1)(19) See Endnotes 1 and 19 in Appendix. GRANITE CREEK • Granite Creek Underground • Granite Creek Open Pit LONE TREE PLANT (Autoclave & CIL) COVE 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 by the early 2030s(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

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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. 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

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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 Cove 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..

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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) (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

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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 Cove 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 i-80 GOLD CORP | 7

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Slide 8 — 5-Year Development Plan

i-80 GOLD CORP | 8 COMPANY OVERVIEW 5-Year Development Plan Targeting annual gold production of 400,000 - 500,000 ounces 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 PRODUCTION Q1 2025 – PEA (update from 2021) Q3 2026 – Feasibility Study(22) Archimedes Underground 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 CONSTRUCTION HEAP LEACH / STOCKPILE TOLL MILL / STOCKPILE

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Slide 9 — Recapitalization Plan Completed Q1 2026

i-80 GOLD CORP | 9 COMPANY OVERVIEW Recapitalization Plan Completed Q1 2026 *Royalty and Gold Prepay accordion feature are subject to drawdown conditions (1)(7)(8)(19) See Endnotes 1,7,8 and 19 in Appendix Recapitalization plan completed ahead of mid-2026 target Fully Funded(1,19) • 2 underground projects (Granite Creek & Archimedes) • Lone Tree Plant refurbishment and restart • Portfolio-wide resource expansion and infill drilling • Advance Mineral Point engineering and technical studies to support a PFS and future permitting Capital Sources (Q2 2025 to Q1 2026) ~$300M May 2025 Equity Financings(19) $250M Franco-Nevada Royalty(18)* ~$288M 3.75% Convertible Senior Notes Due 2031 $150M Gold Prepay (National Bank & Macquarie Bank) $100M Secured Gold Prepay* (National Bank & Macquarie Bank) Subject to Drawdown Conditions ~$1.1B Funded From Secured & Committed Capital(1,19) • Mineral Point open pit oxide project • In dialogue with lenders for corporate revolver, if needed Funded Development Plan ~$465M Cash Balance (as at June 30, 2026) >$1B Secured & Available Capital(19) ~$165M Existing Debt Retired(8) (March 2026) Funded From Expected Cash Flows • Granite Creek open pit oxide project

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Slide 10 — Near-Term Catalysts

i-80 GOLD CORP | 10 COMPANY OVERVIEW Near-Term Catalysts 12 -18 Months ARCHIMEDES UNDERGROUND First gold mined — Q4 2026 LONE TREE PLANT Commence construction — Q4 2026 Completion of detailed engineering — Late Q1 2027 Filtration plant completion — Early Q4 2027 First gold pour — Q4 2027 TECHNICAL STUDIES Granite Creek underground (Feasibility) — Q3 2026 Cove underground (Feasibility) — Q4 2026 Archimedes underground (Feasibility) — Approx. mid-2027 Mineral Point open pit (Pre-Feasibility) — Approx. mid-2027 Granite Creek open pit (Pre-Feasibility) — Timing under review Technical reports will be prepared under both: i. National Instrument 43-101 – Standards of Disclosure for Mineral Projects which, in the opinion of the qualified persons, constitutes a feasibility study; and ii.Subpart 1300 of Regulation S-K which, in the opinion of the qualified persons, constitutes a pre-feasibility study. i-80 GOLD CORP | 10

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Slide 11 — i-80 Gold: Positioned For a Re-Rating

i-80 GOLD CORP | 11 WHY US WHY NOW 1 Tier-1 Pro-Mining Jurisdiction 1 Funded Development Plan 2 One of the Largest Gold & Silver Resource Holders in Nevada 2 Execution Plan Largely on Track 3 Organic Growth to Mid-Tier Status 3 Compelling Valuation Disconnect i-80 Gold: Positioned For a Re-Rating i-80 GOLD CORP | 11

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Slide 12 — Granite Creek Property

i-80 GOLD CORP | 12 See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (8) See Endnote 9 in Appendix Granite Creek Property South Pacific Zone 10 km 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 Turquoise Ridge Mine Granite Creek Property Twin Creeks Mine

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Slide 13 — i-80 GOLD CORP | 13

i-80 GOLD CORP | 13 i-80 GOLD CORP | 13 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 IRR - After-Tax Cash Flow(2) $153M $4,500/oz Gold Price After-Tax NPV(5%) (2) $598M After-Tax IRR - After-Tax Cash Flow(2) $744M Latest Technical Report September 2026 Feasibility Study(22) 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, 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.

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Slide 14 — i-80 Gold’s First Underground Gold Mine

i-80 GOLD CORP | 14 Currently Ramping Up Production • Achieved 2025 guidance with 22,977oz Au (plus sulfide stockpile of ~6,500 oz of recovered gold*) • Ahead of mine plan on main decline and lateral development • Reduced water-related impact on operations; second water treatment plant constructed and in commissioning • Muti-year infill and step-out drilling program underway targeting reserve development and resource growth across five zones • +229% increase in M&I resources and maiden reserves with September 2026 feasibility study See Disclaimer Regarding Forward-Looking Statements & referenced technical reports (1) See Endnote 1 in Appendix *As at December 31, 2025. Next Steps • 2026 Guidance: 30,000 – 40,000 oz Au(1) • 2027: Continued exploration and infill drilling Resources & Reserves in Ogee & South Pacific Zones GRANITE CREEK UNDERGROUND i-80 Gold’s First Underground Gold Mine

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Slide 15 — Significant Potential for Continued Resource Expansion

i-80 GOLD CORP | 15 Significant Potential for Continued Resource Expansion GRANITE CREEK UNDERGROUND South Pacific Zone Remains Open at Depth and Along Strike • Initial drill spacing of ~140 ft; staged reduction planned to increase geological understanding • Drilled ~16,000 m over 46 holes + 6 additional infill holes to confirm continuity* • Results continue to show robust high-grade mineralization across the South Pacific Zone • Potential for continued expansion to the north and at depth • Most northerly and deepest hole drilled to date successfully intersected the primary fault structures as expected (33.6 g/t over 2.9 m & 29.7 g/t over 3.6 m)* *Summary of assay results outlined in i-80 Gold’s January 20, 2026 press release. (21) See Endnote 21 in Appendix 2027 Drill Program: Targeting the CX Zone Opportunity Beneath the Historic Open Pit • Mineralization along the CX fault historically drilled at ~50 m spacing • <250 m from existing development and outside current underground mineral resources and reserves • Demonstrated potential for conversion to mineral reserves and inclusion in the mine plan through infill drilling, adding production faces • Numerous high-grade intercepts • Potential for further expansion to the north and at depth • 2027 program targeting an exploration drift and ~10,000 m of drilling HPR-078(21) 18.0 g/t Au – 9.1 m RCH-1763(21) 15.3 g/t Au – 9.1 m iGM21-06(21) 36.4 g/t Au – 9.1 m CX Zone Historic CX Open Pit iGU25-07 15.1 g/t Au – 10.1 m iGU25-15 31.3 g/t Au – 7.8 m 20.9 g/t Au – 7.5 m iGU25-08 12.8 g/t Au – 19.8 m iGU25-24 15.0 g/t Au – 17.5 m iGU25-31 40.4 g/t Au – 13.2 m iGS25-05 8.9 g/t Au – 12.0 m South Pacific Zone iGM21-01(21) 6.8 g/t Au – 51.1 m

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Slide 16 — Production & Cash Flow Expected to Rise After Autoclave Restart

i-80 GOLD CORP | 16 All-in sustaining costs presented exclude the allocation of Lone Tree autoclave refurbishment capital. Based on the results of the Feasibility Study published September 2026 See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (2)(4)(11)(22) See Endnotes 2, 4, 11 and 22 in Appendix FEASIBILITY STUDY HIGHLIGHTS (compared to March 2025 PEA) • Larger mineable inventory – upgraded a portion of existing mineral resources into higher-confidence categories, including initial mineral reserve estimate • Optimized mine design with higher planned production and reduced waste development • Ongoing infrastructure upgrades, including increased water treatment and dewatering capacity • Lower sustaining capital despite increased development at depth and higher planned tonnage • Optimized processing strategy – refractory and oxide ores are expected to be third-party processed through mid-2027, followed by ~6 months of stockpiling prior to Lone Tree’s planned Q4 2027 commissioning(4) KEY OPERATING & FINANCIAL METRICS(22) GRANITE CREEK UNDERGROUND Production & Cash Flow Expected to Rise After Autoclave Restart $2,750/oz gold price assumption Mine Life ~8.5 years Average Annual Gold Production (2028-2032) 75.1koz Grade Processed 7.87 g/t Au Average Gold Recovery 87% Total Gold Recovered 485koz Cash Cost (LOM )(11) $2,076/oz Au Cash Cost (2028-2032)(11) $1,827/oz Au All-in Sustaining Costs (LOM)(11) (Excl. Lone Tree Refurbishment Capital Allocation) $2,273/oz Au All-in Sustaining Costs (2028-2032)(11) (Excl. Lone Tree Refurbishment Capital Allocation) $1,915/oz Au Sustaining Capital $83M Lone Tree Refurbishment Capital Allocation $49M After-tax NPV(5%) (2) $118M After-tax Cash Flow(2) $153M

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Slide 17 — GRANITE CREEK OPEN PIT

i-80 GOLD CORP | 17 GRANITE CREEK OPEN PIT 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 Timing under review 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 | 17

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Slide 18 — Ongoing Technical Trade Off Analyses to Optimize Economics

i-80 GOLD CORP | 18 Large High-Grade, Low-CAPEX Open Pit Project • Former producing mine with substantial existing infrastructure • Significant oxide and transitional mineralization remains below and adjacent to historic pits – 95% of resource in M&I category • 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 (including 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 Proposed Development Timeline 2026 2027 Early to mid-2030s PERMITTING & TECHNICAL CONSTRUCTION PRODUCTION Granite Creek Open Pit Layout Next Steps • Feasibility Study: Timeline Under Review

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Slide 19 — Ruby Hill Property

i-80 GOLD CORP | 19 PROJECTS ON THE PROPERTY • Archimedes Underground • Mineral Point Open Pit Dominant land position in the Eureka Mining District ~250 km to Lone Tree processing facility via road Host to both gold and base metal mineralization Ruby Hill Property

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Slide 20 — ARCHIMEDES UNDERGROUND

i-80 GOLD CORP | 20 i-80 GOLD CORP | 20 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

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Slide 21 — i-80’s Second Planned Underground Mine

i-80 GOLD CORP | 21 ARCHIMEDES UNDERGROUND i-80’s Second Planned Underground Mine OPEN Proposed Development Timeline 2026 2027 2028 2029+ PRODUCTION Longitudinal Section of Mineralized Bodies Development Advancing on Schedule • Development ahead of PEA rates reaching ~10,250 ft (>20 ft/day) • Permitted for Upper Archimedes above 5100’-level; finalizing approvals for Lower Archimedes Active Infill Drill Program to Support Feasibility Study • Upper 426 Zone drilling completed April 2026 with ~8,500 m across 40 drill holes to better define 426 Zone • Intersected high-grade intercepts plus substantial oxide mineralization not included in 2025 PEA – metallurgical test work underway to evaluate potential mine plan integration • Lower 426 & Ruby Deeps drilling commenced Q2 2026 targeting ~55,000 m over 140 drill holes • Focused on enhancing increasing resource confidence to M&I categories, defining oxide-sulfide transition, confirming continuity, and refining mine plan Next Steps • Q4 2026: First Gold From Upper Archimedes • Approx. Mid-2027: Anticipated Feasibility Study HEAP LEACH / STOCKPILE iRH23-40 6.9 g/t Au – 50.7 m 426 Zone Ruby Deeps CONSTRUCTION

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Slide 22 — Upper 426 Zone Delivers High-Grade Infill Results

i-80 GOLD CORP | 22 Upper 426 Zone Delivers High-Grade Infill Results ARCHIMEDES UNDERGROUND Upper Archimedes Cross-Section Upper 426 Zone Drilling Completed April 2026 • ~8,500 m across 40 drill holes to better define 426 zone • Recent assay results – returned high-grade intercepts in targeted drill areas consistent with current geological model – demonstrate 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, operating heap leach pad + Lone Tree Plant planning for high-grade oxide material to bypass the autoclave through a CIL circuit Lower 426 & Ruby Deeps Drilling Commenced Q2 2026 • Targeting ~55,000 meters over 140 drill holes *See press release dated June 25, 2026 for complete drill results. True widths are estimated between approximately 40% - 65% of core width. 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)

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Slide 23 — High-Tonnes Low-Cost Operation

i-80 GOLD CORP | 23 Based on the results of the Preliminary Economic Assessment filed March 31, 2025. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports *O AISC by ~$100/oz at Ruby Hill and ~$75/oz at Cove. (2)(11) See Endnotes 2 and 11 in Appendix ver-the-road toll-milling trucking costs are treated as non-cash items in the cash flow model and increase $2,175/oz gold price assumption Life of Mine Mine Life ~10 years Average Annual Production (following production ramp-up) 101.9koz Grade Processed 7.0 g/t Au Average Gold Recovery 90% Total Gold Recovered 928koz Cash Cost(11) $1,769/oz Au All-in Sustaining Costs(11)* $1,893/oz Au Mine Construction Capital $49M After-tax NPV(5%) (2) $127M After-tax IRR(2) 23% After-tax Cash Flow(2) $212M PEA HIGHLIGHTS • Potential to achieve the highest underground mining rate among i-80 Gold’s underground operations • Mineralized body supports bulk mining method, driving lower unit costs and enhancing project economics • Several exploration targets to be followed up in the coming years to potentially extend the mine life KEY OPERATING & FINANCIAL METRICS FROM PEA $644M AFTER-TAX NPV5% AND 81% IRR AT $3,000/oz SPOT GOLD PRICE ARCHIMEDES UNDERGROUND High-Tonnes Low-Cost Operation

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Slide 24 — MINERAL POINT OPEN PIT

i-80 GOLD CORP | 24 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 | 24

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Slide 25 — Potential to Become i-80’s Largest Producing Asset

i-80 GOLD CORP | 25 MINERAL POINT OPEN PIT Potential to Become i-80’s Largest Producing Asset (18) See Endnote 18 in Appendix Large Oxide Au-Ag Deposit – Largest of Two Oxide Projects in i-80 Gold’s Portfolio • Potential to become one of Nevada’s largest open pit truck-and-shovel mining operations • $50M of committed Franco-Nevada royalty to be allocated to advance project(18) • Ongoing engineering work to support permitting considerations include large scale open pit mine with dewatering requirements and on-site heap leach • Scheduling pending permitting. Pre-permitting actions underway. Major permitting has not commenced. Ongoing 2026 Infill and Step-out Drilling Campaign • ~130,000 m of drilling over 300 drill holes planned in 2026 to infill currently classified inferred resources to indicated status to support PFS – 42,000 m completed Next Steps • 2026: $40M - $45M exploration budget + $5M for permitting and technical work(18) • Approx. Mid-2027: Anticipated Pre-Feasibility Proposed Development Timeline 2026 2027 2028 2029 2030 2031+ PERMITTING & TECHNICAL CONSTRUCTION PRODU -CTION PEA Pit Shell 2026 Drill Hole Locations

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Slide 26 — Ongoing 2026 Infill and Step-Out Drilling

i-80 GOLD CORP | 26 Ongoing 2026 Infill and Step-Out Drilling 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, each intersecting more than 100 m of gold and silver mineralization* • Area to the east of the known deposit demonstrates the most potential • Mineralization beyond the pit shell was not included in the 2025 PEA resource model, representing potential upside in a future resource estimate 2026 Drill Hole Locations 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 *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.

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Slide 27 — Mineral Point

i-80 GOLD CORP | 27 Based on the results of the Preliminary Economic Assessment filed March 31, 2025. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. (2)(11) See Endnotes 2 and 11 in Appendix $2,175/oz Au price assumption; $27.25/oz Ag price assumption Life of Mine Mine Life 16.5 years Average Annual Gold Equivalent Production (following production ramp-up) 282koz Gold Grade Processed 0.39 g/t Au Silver Grade Processed 15.37 g/t Ag Strip Ratio (excl. pre-strip) 2.9:1 Average Gold Recovery 78% Average Silver Recovery 41% Cash Cost(11) $1,270/oz Au All-in Sustaining Costs(11) $1,400/oz Au Mine Construction Capital $708M After-tax NPV(5%) (2) $614M After-tax IRR(2) 12% After-tax Cash Flow(2) $1,470M KEY OPERATING & FINANCIAL METRICS FROM PEA PEA HIGHLIGHTS • Existing understanding of geology, hydrology and metallurgy substantially reduces execution risks • Housing and workforce development strategy underway; housing capital costs not included in the PEA. Note: Project after-tax NPV at an 8% discount is $296 million at metal prices of $2,175/oz Au and $27.25/oz Ag. Gold Price ($/oz) $2,000 $2,175 $2,500 $2,750 $2,900 $3,000 Silver Price ($/oz) NPV5% IRR NPV5% IRR NPV5% IRR NPV5% IRR NPV5% IRR NPV5% IRR $25.00 $218 8% $540 11% $1,126 18% $1,573 22% $1,840 25% $2,017 26% $27.25 $294 8% $614 12% $1,199 18% $1,647 23% $1,913 25% $2,091 27% $30.00 $387 10% $705 13% $1,286 19% $1,737 24% $2,001 26% $2,181 28% $32.75 $479 11% $795 14% $1,377 20% $1,826 24% $2,092 27% $2,270 28% $35.00 $554 11% $869 15% $1,450 21% $1,899 25% $2,164 27% $2,343 29% GOLD PRICE SENSITIVITY AFTER-TAX NPV ANALYSIS (millions) Mineral Point $2.3B AFTER-TAX NPV5% AND 29% IRR AT GOLD & SILVER SPOT PRICES OF $3,000/oz & $35.00/oz

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Slide 28 — COVE UNDERGROUND

i-80 GOLD CORP | 28 COVE 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 | 28

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Slide 29 — Future Source of Refractory Feed to The Lone Tree Plant

i-80 GOLD CORP | 29 Current 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 Infill Drill Program • 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 COVE UNDERGROUND Future Source of Refractory Feed to The Lone Tree Plant Next Steps • Q4 2026: Anticipated Feasibility Study Completion

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Slide 30 — Recent Two-Year Infill Drill Program Not Included in 2025 PEA

i-80 GOLD CORP | 30 Based on the results of the Preliminary Economic Assessment filed March 31, 2025. See Disclaimer Regarding Forward-Looking Statements & referenced technical reports. *O AISC by ~$100/oz at Ruby Hill and ~$75/oz at Cove. (1)(8) See Endnotes 1 and 8 in Appendix ver-the-road toll-milling trucking costs are treated as non-cash items in the cash flow model and increase COVE UNDERGROUND Recent Two-Year Infill Drill Program Not Included in 2025 PEA PEA HIGHLIGHTS • Low capital, high return on estimated invested capital • Several underground exploration targets to be followed up in the coming years aiming to extend the current mine life • Two process streams: ~60% of material mined is anticipated to be processed at i-80 Gold’s Lone Tree autoclave facility*; remainder to be processed at a third-party roasting facility with established contract • Increased understanding of dewatering needs through hydrological studies – ~60% of CAPEX is for dewatering needs • Currently evaluating capital cost reduction opportunities for dewatering program KEY OPERATING & FINANCIAL METRICS $2,175/oz gold price assumption Life of Mine Mine Life ~8 years Average Annual Production (following production ramp-up) ~100koz Grade Processed 10.4 g/t Au Average Gold Recovery 83% Total Gold Recovered 740koz Cash Cost(8) $1,194/oz Au All-in Sustaining Costs**(8) $1,303/oz Au Mine Construction Capital $157M After-tax NPV(5%) (1) $271M After-tax IRR 30% After-tax Cash Flow(1) $397M $626M(1) AFTER-TAX NPV5% AND 54% IRR AT $3,000/oz SPOT GOLD PRICE

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Slide 31 — Refurbishment on Plan for First Gold Pour Target

i-80 GOLD CORP | 31 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 Shift to Owner-Operated Processing Expected to Significantly Increase Margins Funding Secured & Construction Decision Granted Q1 2026 One of Two Nevada Gold Companies With an Autoclave i-80 GOLD CORP | 31 NEXT STEPS • Q4 2026: Initial Construction Commenced • Q4 2027: First Gold Pour

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Slide 32 — ~$13M

i-80 GOLD CORP | 32 ~$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 LONE TREE PLANT New Plant Design Supports a Manageable, Low-Risk Build • 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

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Slide 33 — Scope of Work – Demolition Commenced June 2026 as Planned

i-80 GOLD CORP | 33 LONE TREE PLANT Scope of Work – Demolition Commenced June 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 • Potentially increase gold recoveries • 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

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Slide 34 — Extensive Trade-Off Studies Completed to Optimize Project Capital

i-80 GOLD CORP | 34 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) • ~44% of project capital committed as of September 30, 2026 • ~74% of procurement package awarded, by value, as of September 30, 2026

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Slide 35 — Dual POX-CIL Processing Flexibility

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 | 35

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Slide 36 — Appendix

Appendix Lone Tree Plant

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Slide 37 — Q2 2026 Financial Highlights

i-80 GOLD CORP | 37 COMPANY OVERVIEW Q2 2026 Financial Highlights • Gold production of ~11,100 oz due to advancements made at Granite Creek • Gold sales2 of ~5,300 oz, less than gold produced due to timing and availability of third-party processing • Net loss of $52.5M or $0.06/share – non-cash accounting impacts tied to the revaluation of our financial instruments – financing costs related to the recapitalization – increased pre-development expenses as projects advance (to be capitalized as feasibility studies published and commercial production declared) – partially offset by higher gross profit • Adjusted loss of $41.2M1 or $0.05 – reflects ramp up of pre-development, evaluation and exploration activities development projects advance Three months ended March 31, 2026 2025 Revenue $000s 24,348 27,836 Gross profit $000s 8,618 798 Pre-development, evaluation and exploration expenses $000s 29,264 9,045 Net loss $000s (52,527) (30,215) Loss per share $/share (0.06) (0.05) Adjusted loss1 $000s (41,164) (26,509) Adjusted loss per share1 $/share (0.05) (0.04) Cash flow used in operating activities $000s (41,164) (11,335) Cash and cash equivalents $000s 464,555 133,691 Gold produced oz 11,098 4,178 Gold ounces sold2 oz 5,335 8,400 Average realized gold price1 $/oz 4,552 3,301 Notes to table: 1 This is a Non-GAAP and Supplementary Financial measure; please see “Non-GAAP and Supplementary Financial Performance Measures” section. 2 Gold ounces sold include attributable gold from mineralized material sales at a payable factor of 56% in 2026 (2025 - 59%).

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Slide 38 — Q2 2026 Operating Highlights

i-80 GOLD CORP | 38 Main Decline and Lateral Development Ahead of Mine Plan • Development more than doubled H1 2026 vs H1 2025 increasing access to high-grade mining areas • Q2 gold production increased to ~8,600 oz Au (~2,000 oz sold) • H1 2026 production increased to ~17,500 oz Au (10,800 oz sold) • 5,300 recoverable ounces of gold in-process at the third-party processing facility • 1,800 ounces of recoverable gold in inventory at Granite Creek • Mining temporarily impacted by ground conditions in two highest- grade areas, restricting access and deferring a portion of high- grade tonnes (access since restored) • Unit mining costs in line with plan • Mine water inflows well controlled Granite Creek Property Three months ended June 30, Operational Statistics 2026 2025 Oxide mineralized material mined tonnes 12,039 24,074 Sulfide mineralized material mined tonnes 13,568 11,201 Low-grade mineralized material mined1 tonnes 9,338 16,173 Waste mined tonnes 37,405 31,947 Total material mined tonnes 72,350 83,395 Oxide mineralized material mined grade g/t 7.44 11.38 Sulfide mineralized material mined grade g/t 6.49 7.43 Low-grade mineralized material grade1 g/t 3.13 3.03 Processed mineralized material – sulfide tonnes 9,055 7,014 Processed mineralized material – heap leach tonnes — 18,750 Total processed mineralized material tonnes 9,055 25,764 Oxide mineralized material sold1 tonnes 15,50 16,317 Total Gold produced oz 8,634 1,941 Total Gold sold1 oz 2,052 5,981 Underground mine development (pre-development) meters 360 211 Drilling meters 1,211 586 Note to table: 1 Gold ounces sold include attributable gold from mineralized material sales at a payable factor of 56% in 2026 (2025 - 59%). GRANITE CREEK UNDERGROUND Q2 2026 Operating Highlights

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Slide 39 — 2026 Guidance

i-80 GOLD CORP | 39 COMPANY OVERVIEW 2026 Guidance 2026 Guidance Production(1) Granite Creek underground oz Au 30,000 - 40,000 Archimedes underground and residual heap leach oz Au 10,000 Operating costs Granite Creek underground $M $110 - $120 Archimedes underground $M $25 - $30 Sustaining capital $M $6 - $8 Growth capital Lone Tree Plant $M $140 - $160 Granite Creek underground - water treatment $M $10 - $15 Pre-development expense Granite Creek underground - mine development1 $M $20 - $25 Archimedes underground - mine development $M $30 - $35 Evaluation and exploration expense Resource expansion and infill drilling: Granite Creek underground $M $10 Archimedes underground $M $25 - $30 Mineral Point open pit $M $45 - $50 Permitting and technical $M $20 - $30 Notes to table above: 1 Granite Creek upon the mine development costs will be capitalized declaration of reserves, assuming reserves will be declared in the feasibility study, which is expected in the second quarter of 2026. • Largely in line with Preliminary Economic Assessments filed March 2025 • Increased processing costs related to the new toll-milling agreement entered into after March 2025 PEAs were completed Archimedes Underground • Feasibility study-related costs brought forward from 2028 Mineral Point Open Pit • Technical and permitting work brought forward from 2028 to 2026

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Slide 40 — Capital Overview

i-80 GOLD CORP | 40 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.

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Slide 41 — Proven Track Record in Developing & Financing Mining Operations

i-80 GOLD CORP | 41 TORONTO OFFICE Proven Track Record in Developing & Financing Mining Operations RICHARD YOUNG President & CEO  Former President & CEO of Teranga Gold, leading its growth and acquisition strategy.  Proven track record in mine development, operations, corporate strategy, and value creation in the mining sector.  Previously held senior leadership roles at Barrick Gold.  30+ years of experience in mining, including finance and capital markets. KATERINA DELUCA SVP Treasury  20+ years of experience in financial reporting and analysis, tax, treasury, financing and M&A, specializing in gold mining.  Former VP Treasury and Financial Planning & Analysis at Argonaut Gold, and Senior Finance Director at Teranga Gold before their acquisitions. PAUL CHAWRUN EVP & COO  Executive mining engineer with 30+ years of technical, operating, and corporate leadership experience.  Proven track record developing mines from permitting through to production.  Former COO & EVP at Centerra Gold, as well as COO of Teranga Gold, and oversaw technical services at Detour Gold for the development of the Detour Lake Project. CINDY TSEO VP Finance  25+ years of experience in finance, mostly within finance leadership roles in the mining industry.  Most recently served as VP Finance at Argonaut Gold and held senior finance roles at Lundin Mining, overseeing reporting and financial reporting and analysis. DAVID SAVARIE EVP & General Counsel  20+ years of international experience as in-house and external counsel, senior executive, and director.  17 years specializing in gold mining, focusing on project development, permitting, financing, and operations across Eastern Europe, West Africa, and North America.  Recently served as SVP, General Counsel at Teranga Gold and Argonaut Gold before their acquisitions. CATERINA DE ROSA VP Investor Relations  10+ years of experience in investor relations and corporate communications at publicly listed mining companies, specializing in capital markets engagement, regulatory disclosure, corporate reputation, media relations, ESG, and internal communications.  Previously held investor relations roles at Argonaut Gold, Teranga Gold, AuRico Gold, and North American Palladium. LEILY OMOUMI SVP Corporate Development & Strategy  17+ years of experience in mining and capital markets, including M&A and corporate strategy.  Former VP, Corporate Development at Teranga Gold prior to its acquisition.  Former buy-side analyst at BMO Asset Management, covering mining, oil and gas equities, and sell-side analyst at Scotia Capital, focused on precious metals.

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Slide 42 — A Team With Deep Nevada Mining Experience

i-80 GOLD CORP | 42 RYAN SNOW EVP & CFO  Former VP of Finance at Nevada Copper supporting development of the Pumpkin Hollow mine.  Previously held senior financial positions at Tahoe Resources in Nevada.  20 years of experience in mining, corporate finance, accounting, and project management. MARK MILLER SVP Environmental & Permitting  Over three decades of experience leading environmental management programs across multiple industries, including mining, where he has managed large-scale permitting, compliance and reclamation efforts.  Previously held senior roles at Nevada Gold Mines and Barrick Gold, successfully implementing strategic plans and driving cost savings while maintaining regulatory compliance. TODD ESPLIN SVP Process Operations & Technical Services  Former senior operations and technical leader at Barrick Gold, specializing in refractory processing and optimization at Goldstrike and Turquoise Ridge mines in Nevada.  Extensive experience in Nevada’s Carlin Trend and Cortez mining district, most recently Mining & Process Manager for Kinross Gold.  Expertise in mine design, metallurgy, project evaluation, and operational efficiency. JANELLE ORDAL VP External Affairs & Sustainability  15+ years of leadership experience, including a decade advancing complex mining and energy development projects through stakeholder and regulatory engagement.  Previously led strategic infrastructure coordination at NV Energy, including relationship management across mining, technology, government, and healthcare.  Active in Nevada’s mining community, serving on nonprofit and education boards supporting workforce and economic development. TIM GEORGE VP Mine Operations  Extensive hands-on experience in operations, processing, development and engineering in both open pit and underground mines, with a recent 10-year focus on gold mines in Nevada.  Proven track record of optimizing mine performance and efficiency. VICTOR ORTIZ VP Health, Safety & Security  18 years of experience in mining operations with a focus on workforce development, emergency response leadership, and implementing safety management systems that support performance and worker protection at Nevada Gold Mines and Barrick Gold.  Recognized by the Nevada Mining Association for his contributions to advancing safety leadership in the mining industry. TYLER HILL VP Geology  Professional Geologist with 10+ years of experience in Nevada mineral exploration and project management.  Previously evaluated exploration projects across Nevada for a subsidiary of Waterton Global Resource Management.  Part of the McCoy-Cove exploration team that discovered 1.1 Moz Au, increasing the Cove deposit resource by >400%. RENO OFFICE A Team With Deep Nevada Mining Experience

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Slide 43 — Expertise in Mining, Technical, Capital Markets and Finance

i-80 GOLD CORP | 43 BOARD OF DIRECTORS Expertise in Mining, Technical, Capital Markets and Finance RON CLAYTON Chairman  40+ years of exploration, development, construction and mine operation experience  Former President, CEO & Director of 1911 Gold Corp  Former President & CEO Tahoe Resources, SVP Operations Hecla, VP Operations Stillwater RON BUTLER JR. Director  30+ years of experience in audit, financial and strategic planning, operational excellence, and corporate governance  Managing Partner at Ernst & Young in Arizona for 29 years  Former U.S. Mining & Metals Leader at Ernst & Young  Executive Committee City of Phoenix’s $500M General Obligation Bond Program  EY’s West Region Executive Leadership Team  Certified Public Accountant RICHARD YOUNG President & CEO, Director  30+ years of operational & leadership experience  Former CEO of Teranga Gold Corporation  Former President & CEO of Argonaut Gold  Recipient of the 2008 & 2017 PDAC Sustainability Award  Chartered Accountant and a Certified Public Accountant ARTHUR EINAV Director  General Counsel and Senior Managing Director at Sprott Inc.  Co-head of Enterprise Shared Services Group with specific responsibility for legal, compliance, risk and human resources  Member of the Law Society of Upper Canada and the New York State Bar JOHN BEGEMAN Director  40+ years of operational & leadership experience  Director Allied Gold  Director Pan American Silver  Former Executive Chairman Premier Gold  Former Director of Yamana Gold  Former CEO of Avion Gold Corp  Former COO of Zinifex Canada STEPHEN GOTTESFELD Director  Nearly 30 years of global mining expertise in legal, environmental, sustainability, and governance matters across global exploration, project development, mine operations, and closure  25+ years with Newmont including nearly a decade on the Executive Leadership Team  Former Executive Vice President, Chief Sustainability & External Affairs Officer of Newmont  Former Executive Vice President, General Counsel and Corporate Secretary of Newmont  Former attorney at Holland & Hart, LLP

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Slide 44 — Expertise in Mining, Technical, Capital Markets and Finance continued

i-80 GOLD CORP | 44 MICHAEL JALONEN Director  Nearly 40 years of mining and capital markets experience  30 years as Managing Director and North American Senior Precious Metals Research Analyst at Bank of America Securities (BofA)  Consistently ranked among the leading mining analysts in North America  Global Coordinator for BofA’s Metals, Mining & Steel Research Team  Chartered Financial Analyst (CFA) and began his career as a geologist STEVEN YOPPS Director  35+ years of operational, technical, project development, and regulatory experience Nevada  Vice President of Nevada Projects for AngloGold Ashanti  Manager of Growth Projects for Nevada Gold Mines  General Manager of the Ruby Hill Mine (currently i-80 Gold’s wholly owned Ruby Hill property)  Managed Barrick’s Goldstrike’s autoclave, roaster, and mill facilities for more than a decade  Metallurgical engineer and Qualified Person recognized by the Mining & Metallurgical Society of America CASSANDRA JOSEPH Director  20+ years of experience in corporate, environmental & intellectual property law  Currently General Counsel & Corporate Secretary of Ivanhoe Electric  Former Senior VP & General Counsel for Nevada Copper  Former VP, Associate General Counsel, Corporate Secretary, & Chief Compliance Officer for Tahoe Resources BOARD OF DIRECTORS Expertise in Mining, Technical, Capital Markets and Finance continued

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Slide 45 — Mineral Resources

i-80 GOLD CORP | 45 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) Cove – 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 Cove – 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 Cove – 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.

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Slide 46 — Mineral Resources Defined by Underground & Open Pit Deposits

i-80 GOLD CORP | 46 Mineral Resources Defined by Underground & Open Pit Deposits UNDERGROUND MINERAL RESOURCE ESTIMATE Tonnes Gold Grade Silver Grade Gold Ounces Silver Ounces (kt) (g/t Au ) (g/t Ag) (koz) (koz) Measured & Indicated Granite Creek – Underground(9)* 3,729 7.17 859 Cove – Underground(15) 1,177 8.20 15.00 310 568 Ruby Hill – Archimedes Underground(13) 1,791 7.60 1.60 436 92 MEASURED & INDICATED 6,697 7.47 15.00 1,605 568 Inferred Granite Creek – Underground(9)* 893 7.06 203 Cove – Underground(15) 4,047 8.90 11.10 1,156 1,439 Ruby Hill – Archimedes Underground(13) 4,188 7.30 2.10 988 286 INFERRED 9,128 7.99 5.88** 2,347 1,725 OPEN PIT MINERAL RESOURCE ESTIMATE Tonnes Gold Grade Silver Grade Gold Ounces Silver Ounces (kt) (g/t Au) (g/t Ag) (koz) (koz) Measured & Indicated Granite Creek – Open Pit(12)* 37,701 1.18 1,435 Ruby Hill – Mineral Point Open Pit(14) 216,982 0.48 15.00 3,376 104,332 Ruby Hill – Archimedes Open Pit(16) 4,320 1.95 10.60 272 1,490 Lone Tree - Open Pit(17) 7,690 1.73 428 MEASURED & INDICATED 266,693 0.64 14.91 5,511 105,822 Inferred Granite Creek – Open Pit(12)* 2,148 1.09 75 Ruby Hill – Mineral Point Open Pit(14) 194,442 0.34 14.60 2,117 91,473 Ruby Hill – Archimedes Open Pit(16) 870 1.12 8.50 31 250 Lone Tree - Open Pit(17) 52,940 1.69 2,789 INFERRED 250,400 0.62 14.57** 5,012 91,723 Notes to table Above: (9)(12)(13)(14)(15)(16)(17) Refer to the related Endnotes in the Appendix for the notes related 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 underground and open pit mineral resources are 100% attributable to the Company with the exception of two royalty claims, which 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. Mineral resources, which are not mineral reserves, do not have demonstrated economic viability.

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Slide 47 — Up to $500M Financing Package Secured

COMPANY OVERVIEW Up to $500M Financing Package Secured Royalty, accordion feature, and gold prepayment facility subject to customary conditions and lender approval. Gold prepay also requires an intercreditor arrangement. (6) See Endnote 6 in Appendix Closed Q1 2026 $225M Available at closing $25M allocated to accelerate Mineral Point feasibility study and permitting work in 2026 $25M Second payout for Mineral Point Expected to be available in 2026 after initial $25M allocation is spent 1.5% Life of mine net smelter return royalty Stepping up to 3.0% January 2031 Production covers all mineral properties: Granite Creek, Cove, the Ruby Hill Complex and Lone Tree $250M Franco-Nevada Royalty $250M Gold Prepayment Facility with National Bank & Macquarie Bank $150M Initial drawdown at closing(6) $100M Accordion feature available for a 24-month period upon closing Expected to execute H1 2027 ~40koz Au To be delivered for the initial drawdown Over a 30-month period beginning January 2028 Plan to transition prepayment facility into corporate revolver to fund Mineral Point development i-80 GOLD CORP | 47

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Slide 48 — Executing Across The Business & Repositioned For Growth

i-80 GOLD CORP | 48 2024  New Development Plan Established a three-phase plan to advance all five gold projects and one processing facility, targeting ~600,000 oz Au in average annual output in the early 2030s(1) 2025  Completed PEAs For All Five Projects Filed Preliminary Economic Assessments defining total portfolio NPV(5%) of $4.9B at $3,000/oz Au(2)  Stabilized Granite Creek Underground Development & Gold Output Enhanced dewatering infrastructure improving water ingress and main decline advancement  Commenced Construction at Archimedes Underground Initiated development of second planned underground mine  Lone Tree Plant Refurbishment Engineering Study Completed engineering study which confirmed a nameplate capacity of 827,806 tpa, scope of work, and ~$430M total cost estimate (incl. capital spares and contingency) 2026  Positive Construction Decision on Lone Tree Plant Refurbishment Positive construction decision granted by the Board following extensive trade-off studies and engineering study completion  Secured >$1B in Total Funding Under Recapitalization Plan Transformational financing package of up to ~$775M and equity financing of ~$300M (including expected warrant exercise)(5) establishing a fully funded development plan  Commenced Lone Tree Plant Demolition Commenced demolition of existing plant components requiring replacement as part of refurbishment Ongoing  Added Depth to Key Functions & Board Strategic hires, promotions, and board appointments across key functions to strengthen execution of the development plan, including 2025 COO appointment COMPANY OVERVIEW Executing Across The Business & Repositioned For Growth (1)(2)(5) See Endnotes 1,2 and 5 in Appendix

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Slide 49 — Nevada: Ranked #1 Jurisdiction

i-80 GOLD CORP | 49 Source: Fraser Institute Annual Survey of Mining Companies, 2025 published February 2026 by Julio Mejía and Elmira Aliakbari at www.fraserinstitute.org. Fraser Institute Mining Attractiveness Index Annual Survey of Mining Companies, 2025 • Moved up from 2nd place in 2024 • Nevada consistently ranked top 10 over the last 11 surveys • Beyond mineral potential, government policies are a key determinant of mining investment About the Annual Survey of Mining Companies • Ranks jurisdictions according to the extent that public policy factors encourage or discourage mining investment • 2,304 respondents • 68 jurisdictions from all continents in 2025 except Antarctica (82 in 2024) Nevada Ontario Saskatchewan South Australia Arizona Western Australia Botswana Norway Sweden Saudi Arabia Finland Alaska Queensland Newfoundland & Labrador Morocco New Mexico Tasmania San Juan Brazil British Columbia Santa Cruz Quebec Manitoba Alberta Zambia Montana Yukon New South Wales Nunavut Spain Ireland Chile Northern Territory Tanzania Nevada: Ranked #1 Jurisdiction Globally for Investment Attractiveness Indonesia Mexico New Brunswick Utah Idaho New Zealand Peru Columbia Colorado Papua New Guinea Northwest Territories Portugal Ivory Coast Mongolia Victoria Rep. of Congo Namibia Kazakhstan Ghana Nova Scotia Angola Mendoza South Africa Ecuador Guinea (Conakry) Northern Ireland Bolivia Neuquen Chubut Mali Philippines Egypt Burkina Faso China

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Slide 50 — Capex Waterfall Comparison to 2023 Study

i-80 GOLD CORP | 50 $8M $20M $40M -$61M $17M $9M $12M $386M $430M FS Owner's Costs Owner's Spare's / … Escalation Achieved Savings Engineering de-risk Scope Additions Incremental … FSU $300 $320 $340 $360 $380 $400 $420 $440 $460 $480 $500 Increase Decrease Total LONE TREE PLANT Capex Waterfall Comparison to 2023 Study 2023 Study Owner’s Costs (Inflation + Expanded) Capital Spares/Reps Escalation Design Optimization Engineering de-risk + Redundancy Scope Additions Owner’s Costs (Additions) 2025 Update Study Increase Decrease Total CAPEX supported by ~14,000 cost line items in the control estimate Extensive engineering reviews, operating assessments, and trade-off studies completed to optimize project capital Millions

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Slide 51 — Refurbishment Timeline Tracking Well

i-80 GOLD CORP | 51 LONE TREE PLANT Refurbishment Timeline Tracking Well Key Milestones to Construction and Commissioning Anticipateded timeline

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Slide 52 — Endnotes

i-80 GOLD CORP | 52 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

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Slide 53 — Endnotes continued

i-80 GOLD CORP | 53 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

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Slide 54 — Endnotes continued

i-80 GOLD CORP | 54 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

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Slide 55 — Non-GAAP and Supplemental Financial Performance Measures

i-80 GOLD CORP | 55 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.

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Slide 56 — FOR FURTHER INFORMATION,

FOR FURTHER INFORMATION, PLEASE CONTACT: 1.866.525.6450 [email protected] WWW.i80GOLD.COM NYSE: IAUX | TSX: IAU

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