i-80 Gold Announces Positive Updated Preliminary Economic Assessment on the Cove Project, Nevada; After-Tax NPV(5%) of $271 Million with an After-Tax IRR of 30% at US$2,175/oz Au

, /PRNewswire/ - i-80 GOLD CORP. (TSX: IAU) (NYSE: IAUX) ("i-80 Gold", or the "Company") is pleased to announce the results of an updated preliminary economic assessment (the "2025 PEA" or the "Study") for the Cove Project ("Cove" or the "Project"), an advanced underground exploration project located on the Battle Mountain-Eureka Trend in Northern Nevada, United States. The 2025 PEA confirms that the high-grade Cove Project has the potential to become a key component of the Company's regional "hub-and-spoke" mining and processing strategy. Figure 1: Cove Longitudinal Section of Mineralized Bodies and Drill Holes (Looking Northeast) (CNW Group/i-80 Gold Corp) Figure 2: Cove Project Gold Price Sensitivity Cost Analysis (CNW Group/i-80 Gold Corp) Figure 3: Cove Regional Map (CNW Group/i-80 Gold Corp) Figure 4: LOM Processing Schedule (CNW Group/i-80 Gold Corp) Figure 5: LOM Annual Cash Flow (CNW Group/i-80 Gold Corp) Figure 6: LOM Gold Production Profile vs Cost per Ounce (CNW Group/i-80 Gold Corp) The 2025 PEA replaces the previous PEA for the Project completed in 2021 (the "2021 PEA"). The Study has been updated to reflect a remodeling of the deposit using a more confined mining geometry, further advancement of the hydrology model, as well as using updated precious metals prices, capital and operating costs. All amounts are in United States dollars, unless otherwise stated. "The 2025 PEA for the Cove Project represents an important first step in delivering updated technical information across i-80 Gold's asset portfolio. The results validate our planned regional hub-and-spoke model of feeding a central processing plant with high-grade material from three underground mines, which is expected to form the production base for i-80 Gold moving forward. In the coming weeks, we look forward to releasing updated PEAs for Granite Creek (both open pit and underground) and the Ruby Hill Complex (Archimedes underground and Mineral Point open pit)," stated Richard Young, Chief Executive Officer of i-80 Gold. 2025 PEA HighlightsMineral Estimates, Production and Mine Life Underground gold mine with a life of mine ("LOM") of approximately 8 years. Average annual gold production of approximately 100,000 ounces of gold following ramp up. Estimated LOM cash costs(1) of $1,194 per ounce and all-in-sustaining costs(1) of $1,303 per ounce. Updated mineral resource estimate resulting in an indicated gold mineral resource of 311,000 oz at 8.2 grams per tonne ("g/t") and an inferred gold mineral resource of 1.16 Moz at 8.9 g/t. The current infill drill program conducted over the past two years is not included in the 2025 PEA, however, all drill results will be included in the feasibility study targeted for completion in the fourth quarter 2025. Several underground exploration targets to be followed up in the coming years to potentially extend the mine life beyond the current 8 years. Project Economics Based on a $2,175/oz gold price, the Project's undiscounted after-tax cash flows(2) total $397 million with an after-tax net present value ("NPV") of $271 million(2), assuming a 5% discount rate, generating a30% internal rate of return ("IRR"). Based on a spot gold price of $2,900/oz, the Project's undiscounted after-tax cash flows(2) total $793 million with an after-tax NPV of $582 million(2), assuming a 5% discount rate, generating a IRR of 52%. Mine Construction capital estimated at $157 million, nearly 60% of which is earmarked for dewatering activities. LOM sustaining capital estimated to total $49 million. All operating, processing, pre-production, mine construction, and sustaining costs have been updated relative to the 2021 PEA to reflect current market pricing. Mining and Processing Mining to use a combination of cut-and-fill and bench-and-fill methods unchanged from the previous study. Nearly 60% of the material mined is anticipated to be processed at i-80 Gold's Lone Tree autoclave facility (see Figure 3) and the remainder processed at a third-party roasting facility with whom the Company has an established contract. Average gold grade processed of 10.4 g/t with an average gold recovery of 86% (autoclave) and 79% (roaster). A summary of key valuation, cost, and operating metrics is presented in Table 1 below. For more detailed metrics presented on an annual basis, see Cove Project Detailed Cash Flow Model in Appendix. Table 1: Summary of 2025 PEA Key Operating and Financial Metrics Project Economics Unit Gold Price $/oz $2,175 Silver Price $/oz $27.25 Pre-Tax NPV(5%)(2) $M $337 After-Tax Cash Flow(2) $M $397 After-Tax NPV(5%)(2) $M $271 After-Tax IRR % 30 % Production Profile Mine Life years 8 Mineralized Material Mined 000s tonnes 2,675.6 Gold Grade of Mineralized Material Mined g/t Au 10.4 Silver Grade of Mineralized Material Mined g/t Ag 6.2 Waste Tonnes Mined 000s tonnes 226.1 Total Tonnes Mined 000s tonnes 2,901.8 Total Mineralized Material Processed 000s tonnes 2,675.6 Gold Grade Processed g/t Au 10.4 Silver Grade Processed g/t Ag 6.2 Average Gold Recovery % 83 % Average Silver Recovery % 24 % Total Gold Recovered 000s oz 739.6 Total Silver Recovered 000s oz 114.5 Average Annual Gold Production (LOM) 000s oz 92.4 Average Annual Gold Production (following production ramp up) 000s oz 100 Unit Operating Costs LOM Operating Cost Mineralized Material Mined $/t 142.2 Mineralized Material and Waste Mined $/t 141.0 Processed $/t milled 80.0 Transportation Costs $/t milled 20.8 Electricity Dewatering $/t milled 26.5 G&A $/t milled 21.5 LOM Total Cash Costs(1) (net of by-product credit) $/oz $1,194 LOM All-in Sustaining Costs(1) (net of by-product credit) $/oz $1,303 Total Capital Costs Pre-Development Capital $M $17.3 Construction Capital $M $157.4 LOM Sustaining Capital $M $49.1 Closure Costs $M $31.3 Total Capital & Closure Costs(3) $M $255.1 "The Study highlights the value Cove brings to our gold portfolio, showcasing high-grade mineralization on a brownfield site in a top-tier mining jurisdiction, with low capital requirements and a high return on invested capital," added Matthew Gili, President and Chief Operating Officer of i-80 Gold. "The Study primarily updates the 2021 PEA's economic model and includes findings from hydrological studies, which have increased our understanding of the Project's dewatering needs. Additionally, the completion of an exploration decline has enabled infill resource drilling and advanced metallurgical test work, which will be included in a feasibility study planned for the fourth quarter of 2025."Mineral Resource UpdateThe 2025 PEA is based on a revised resource model with no additional drilling results included, relative to the 2021 PEA. The updated resource estimate has been calculated using stope optimizer software, whereas the previous mineral resource was not. The new methodology generates optimal mineable stope geometries while considering several factors including geological constraints, grade distribution and stope dimensions. This significantly improves the accuracy of mineral resource estimates and has become an industry standard for underground deposits in Nevada.The updated mineral resource estimate includes a total of 311,000 ounces of gold at 8.2 g/t Au in the indicated category and 1,156,000 ounces of inferred resources at 8.9 g/t in the inferred category (see Table 2). The majority of the indicated resource is currently hosted in the Helen deposit (see Figure 1). The updated estimate resulted in additional mineralized body constraints resulting in indicated and inferred tonnes decreasing by 6% and 13% respectively. Moreover, gold ounces decreased by 20% in the indicated and inferred categories, however the updated mineral resource represents more mineable shapes than the prior resource estimate.The ongoing Cove drilling program has been designed to infill mineralization in the Helen and Gap zones ahead of a planned feasibility study in 2025. The Project offers substantial exploration potential as the bulk of the work completed to date has been focused on the main deposit areas only. Exploration from 2014 through 2019 resulted in the identification of several new zones of mineralization that have received minimal follow-up, including mineralization in the 2201 zone (153,000 tonnes at 26.7 g/t Au) beneath the Cove pit (see Figure 1).Table 2: Cove Mineral Resource Estimate as at December 31, 2024 Indicated Mineral Resources Tonnes Au Ag Au Ag (000) (g/t) (g/t) (000 oz) (000 oz) Helen 674 9.3 2.6 201 55 Gap 254 7.5 8.9 61 72 CSD 249 6.0 55.0 48 441 Total Indicated 1,178 8.2 15.0 311 569 Inferred Mineral Resources Tonnes Au Ag Au Ag (000) (g/t) (g/t) (000 oz) (000 oz) Helen 1,582 8.4 2.9 427 146 Gap 2,022 8.4 9.0 543 585 CSD 290 5.9 57.8 55 538 2201 153 26.7 34.8 131 171 Total Inferred 4,046 8.9 11.1 1,156 1,439 Notes to table above: I. Mineral resources have been estimated at a gold price of $2,175 per troy ounce and a silver price of $27.25 per troy ounce; II. Mineral resources have been estimated using gold metallurgical recoveries ranging from 73.2% to 93.3% for roasting and 78.5% to 95.1 % for pressure oxidation; III. Roaster cutoff grades range from 4.15 to 5.29 Au g/t (0.121 to 0.154 opt) and pressure oxidation cutoff grades range from 3.83 to 4.64 Au g/t (0.112 to 0.135 opt); IV. The effective date of the mineral resource estimate is December 31, 2024; V. Mineral resources, which are not mineral reserves, do not have demonstrated economic viability. The estimate of mineral resources may be materially affected by environmental, permitting, legal, title, socio-political, marketing, or other relevant factors; VI. An inferred mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. Geological evidence is sufficient to imply but not verify geological and grade or quality continuity. An inferred mineral resource has a lower level of confidence than that applying to an indicated mineral resource and must not be converted to a mineral reserve. It is reasonably expected that the majority of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration; and VII. The reference point for mineral resources is in situ. Economic AnalysisCove's NPV and IRR in relation to fluctuations in the long-term gold price are demonstrated in Table 3 and the Project's cost sensitivities are illustrated in Figure 2 below.Table 3: Cove Project Gold Price Sensitivity After-tax Analysis Gold Price ($/oz) $1,850 $2,000 $2,175 $2,500 $2,750 $2,900 $3,000 NPV5%(2) ($M) $134 $198 $271 $409 $516 $582 $626 IRR (%) 19 % 24 % 30 % 40 % 47 % 52 % 54 % Project OverviewThe Project is located 25 miles southwest of the town of Battle Mountain, in the McCoy mining district in the Fish Creek Mountains of Lander County, Nevada (see Figure 3). The Cove deposit was mined by Echo Bay Mines Ltd. (Echo Bay) between 1988 and 2000 during which period the Cove deposit produced 2.6 million ounces of gold and 100 million ounces of silver. Gold and silver production from heap leach pads continued until 2006. The Project benefits from extensive historical geological datasets, its location in a jurisdiction with deep mining pedigree, and access to both local and regional infrastructure, including proximity to paved highways, electrical power, pre-existing mine infrastructure, and a skilled labor force.i-80 Gold's predecessor purchased the Cove project in 2012 and has since conducted significant exploration and infill drilling, metallurgical testing, and has advanced the permitting process. The Company expects to begin expending development capital, primarily for dewatering activities in late 2027 or early 2028 and for production to ramp up during 2029.Geology and Mineralization The Cove deposit consists of Helen, Gap, CSD, and 2201 zones. They are located beneath the historically mined Cove open pit and extend approximately 2,000 feet northwest from the pit (see Figure 1). The current mine plan includes Helen and Gap while CSD and 2021 could be included in a future mine plan, subject to the completion of additional technical work.Three main types of mineralization occur at Cove. The Helen and Gap zones are Carlin-style disseminated refractory gold deposits. The Cove South Deep (CSD) gold and silver mineralization is similar in character to that at Helen and Gap but is characterized by silver to gold ratios of 50:1 to over 100:1. The 2201 zone is comprised of disseminated sulfides within sheeted stockwork veins and massive sulfide lenses replacing carbonate. Both styles of mineralization in the 2201 zone contain locally high concentrations of lead and zinc in addition to gold and silver. Structural controls on mineralization include the broad, gently southeast-plunging Cove anticline, several northeast striking dike-filled normal faults (Cay, Blasthole, Bay, 110, Gold Dome), mafic sills, and rheology contrasts.Although most well-known Carlin-type deposits are hosted in Paleozoic slope and shelf carbonates, host rocks at Cove are silty to massive limestones and dolomites of the Triassic Star Peak Group. Limestone and silty limestone of the Favret Formation (approximately 700 feet thick) are the primary host for Carlin-style mineralization, and the Dixie Valley Formation conglomerates are the primary host of polymetallic vein mineralization in the 2201 zone.Mining and ProcessingThe Study demonstrates an initial 8-year mine life with average annual gold production of approximately 100,000 ounces of gold following ramp up. The Study represents a preliminary point-in-time estimate of the mine plan. Once underground infrastructure is constructed a significant exploration program is planned to follow up on earlier positive drill results in a more cost-effective manner with a goal of extending the mine life beyond the current 8 years.The high-grade mine will be accessed by a single ramp extending from the surface (elevation 4,625 ft) to the lowest extent of planned mining (elevation 3,430 ft). The access ramp will be large enough to accommodate 30-ton trucks. A series of raises will provide secondary egress and ventilation. A mining contractor will extract the mineralization using drift and fill mining methods at an average rate of approximately 1,100tonnes per day.Metallurgical testing has demonstrated that both Helen and Gap resources are generally refractory and require an oxidation process to increase gold extraction using whole cyanidation of mineralized material. Composite testing has shown that Helen samples are generally more amenable to roasting and carbon-in-leach ("CIL") processing, while the Gap zone is more amenable to an autoclave process followed by CIL. Upon the commencement of mining and processing, a detailed and systematic mineralized material control sampling program will be utilized to determine which of the two facilities (roaster vs. autoclave) the material should be routed to, to maximize recovery rates.The PEA incorporates toll-milling arrangements with associated over-the-road trucking costs for both process streams. The PEA contemplates the use of the Lone Tree autoclave (owned by the Company and in respect of which an autoclave refurbishment class 3 engineering study is expected to be completed in 2025) and a third-party roaster for which a toll-milling agreement has been negotiated for the treatment of that material.Capital Cost SummaryMine construction capital is estimated to be $157.4 million. Approximately 60% of capital expenditures is for dewatering activities with the balance to be used for portal and underground development to gain access to the mineralized bodies (see Table 4). The low development capital required to construct Cove is due in part to the existence of significant infrastructure, including a portal to the Helen deposit and 5,739 feet of development work already completed. Permitting activities are well underway (see Permitting section for more detail). The permitting process is expected to take approximately three years to complete followed by 18 months of construction which is primarily dewatering and underground development, as well as some light surface infrastructure work.Cove is expected to generate an estimated $379 million in net cash flow over the current 8-year mine life (see Figure 5).Table 4: Capital Cost Estimates Pre-Development Mine Construction Sustaining ($M) ($M) ($M) Environmental, Permitting and Feasibility $7.0 - - Dewatering - Helen - $39.5 - Dewatering - Gap - $48.4 - Electrical Service and Powerline - $10.5 - Mine Development - Helen - $24.8 $21.0 Mine Development - Gap - $0.4 $20.3 Mine Facilities - $2.2 $1.3 Pre-production Expense $5.0 $3.6 - Resource Conversion Drilling $2.0 - - Contingency (15% Drilling and Development; 25% Facilities) $3.3 $28.0 $6.5 Total Capital Cost(3) $17.3 $157.4 $49.1 Operating Cost SummaryThe 2025 PEA estimates a cash cost(1) of $1,194 per ounce of gold and an all-in sustaining costs(1) of $1,303 per ounce of gold for the LOM (see Table 5). Figure 6 illustrates these operating costs over Cove's estimated production profile. Table 5: Total and Unit Operating Costs Total Costs Unit Cost Cost per Ounce ($M) ($/t milled) ($/oz Au) Mining $408 $152 $552 Transportation & Processing $270 $101 $365 Electrical Power $71 $26 $96 G&A, Royalties & Net Proceeds Tax $138 $51 $186 By-Product Credits ($3) ($1) ($4) Total Operating Cost/Cash Cost $883 $330 $1,194 Closure & Reclamation $31 $12 $42 Sustaining Capital $49 $18 $66 All-in Sustaining Costs(1) $963 $360 $1,303 PermittingNational Environmental Policy Act (NEPA) associated permitting activities continue to progress with all baseline study reports and the Plan of Operations Amendment having been submitted to the Bureau of Land Management (BLM). The permitting action is anticipated to require a Notice of Intent to Complete an Environmental Impact Statement (EIS). Following the EIS notification process, a public scoping period will be completed and a draft EIS will be prepared and subsequently posted for public review and comment. The public comments and associated responses will be incorporated into the Final EIS document for BLM acceptance.Nevada Division of Environmental Protection (NDEP) permitting activities are also in progress, focusing on the submittal and subsequent acceptance of modification applications to the site's Water Pollution Control Permits and Reclamation Permit, in addition to, a new Air Quality Operating Permit application, submittal, and issuance.These permitting activities are well underway and are expected to take approximately three years to complete from the effective date of the technical report, with permits anticipated by the end of 2027.Next Steps to Feasibility StudyAs stated earlier, a feasibility study under NI 43-101 with an updated mineral resource estimate is expected to be completed in the fourth quarter of 2025, in addition to a report prepared under S-K 1300. The updated resource will include 45,000 meters of drilling conducted since the completion of the exploration drift in the first quarter of 2023. Below is a summary of additional work to be conducted.Resource Delineation and Exploration Complete the ongoing underground resource delineation drilling and incorporate this data into the updated resource model. Mining A geotechnical characterization program is being implemented along with resource delineation for use in mine planning. Complete additional testing of potential backfill sources to optimize the cemented rock fill mix design. Complete a ventilation simulation to predict diesel particulate matter, carbon monoxide, and other contaminate concentrations. Metallurgical TestingThe current resource delineation drilling program will provide samples needed for additional metallurgical testing to confirm the variability and viability of Helen and Gap resources to roasting and pressure oxidation (autoclave) with CIL. The objectives for the testing include: Determine the location and number of samples required to represent the resources through geo-metallurgical analysis. Assess the variability of the responses to roasting and calcine cyanidation across the resources. Assess the variability of the responses to pressure oxidation (autoclave) and residue cyanidation across the resources. Consider tests to optimize pressure oxidation (autoclave), such as temperature, retention time and acid strength. Testing to establish head grade and extraction relations to support more detailed resource modelling. Establish mineralogy impact and determine geologic domains. Collect additional comminution data to assess hardness variability within the resources. Technical Disclosure and Qualified PersonsThe 2025 PEA was prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101"). The full 2025 PEA will be filed within 45 days under the Company's issuer profile on SEDAR+ at www.sedarplus.ca and on i-80 Gold's profile. An Initial Assessment for the Cove Project ("S-K 1300 Report") was also prepared in accordance with Subpart 1300 ("S-K 1300") and Item 601 of the Regulation S-K and the S-K 1300 Report will be filed on EDGAR at www.sec.gov. Both reports will be available on the Company's website at www.i80gold.com. The mineral estimates and project economics are the same under the 2025 PEA and the S-K 1300 Report.The technical information contained in this press release has been 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.For a description of the data verification, assay procedures and the quality assurance program and quality control measures applied by the Company, please see the Company's Annual Information Form dated March 12, 2024 filed under the Company's profile on SEDAR+ at www.sedarplus.ca and filed with the Company's Form 40-F under the Company's profile on EDGAR at www.sec.gov. Further information about the 2025 PEA referenced in this news release, including information in respect of data verification, key assumptions, parameters, risks and other factors, will be contained in the 2025 PEA.The Study is preliminary in nature and 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 the Study will be realized. Mineral resources do not have demonstrated economic viability and are not mineral reserves.Endnotes (1) This is a non-IFRS/non-GAAP measure. Please see both sections titled "Non-IFRS Performance Measures/Non-GAAP Financial Performance Measures" below. (2) Cash flow and NPV are calculated as of the start of construction, which is anticipated to commence in January 2028. (3) Total Capital Cost in Table 4 excludes $7.2 million of contingent payments related to the acquisition of the property in 2012. These amounts are anticipated to be incurred in 2033 and 2034 and are based on reaching production milestones of 250,000 and 500,000 gold ounces, respectively. About i-80 Gold Corp.i-80 Gold Corp. is a Nevada-focused mining company with the fourth largest gold mineral resources in the state of Nevada. The recapitalization plan underway is designed to unlock the value of the Company's high-grade gold deposits to create a Nevada mid-tier gold producer. i-80 Gold's common shares are listed on the TSX and the NYSE American under the trading symbol IAU:TSX and IAUX:NYSE. Further information about i-80 Gold's portfolio of assets and long-term growth strategy is available at www.i80gold.com or by email at [email protected].Forward-Looking InformationCertain statements in this release constitute "forward-looking statements" or "forward-looking information" within the meaning of applicable securities laws, including but not limited to, statements regarding the updated results of the 2025 PEA on the Project, such as future estimates of internal rates of return, net present value, future production, estimates of cash cost, proposed mining plans and methods, mine life estimates, cash flow forecasts, metal recoveries, estimates of capital and operating costs, timing for permitting and environmental assessments and the size and timing of phased development of the Project. Furthermore, forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable by the Company as of the date of such statements, are inherently subject to significant business, economic and competitive uncertainties and contingencies. With respect to this specific forward-looking information concerning the development of the Project, the Company has based its assumptions and analysis on certain factors that are inherently uncertain. Uncertainties include: (i) the adequacy of infrastructure; (ii) geological characteristics; (iii) metallurgical characteristics of the mineralization; (iv) the ability to develop adequate processing capacity; (v) the price of gold, silver and other commodities; (vi) the availability of equipment and facilities necessary to complete development; (vii) the cost of consumables and mining and processing equipment; (viii) unforeseen technological and engineering problems; (ix) natural disasters and/or accidents; * currency fluctuations; (xi) changes in regulations; (xii) the compliance by joint venture partners and/or key suppliers with terms of agreements; (xiii) the availability and productivity of skilled labour; (xiv) the regulation of the mining industry by various governmental agencies; (xv) the ability to raise sufficient capital to develop such projects; (xiv) changes in project scope or design; and (xv) political factors.Such statements can be identified by the use of words such as "may", "would", "could", "will", "intend", "expect", "believe", "plan", "anticipate", "estimate", "scheduled", "forecast", "predict" and other similar terminology, or state that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved. These statements reflect the Company's current expectations regarding future events, performance and results and speak only as of the date of this release and are expressly qualified in their entirety by this cautionary statement. Subject to applicable securities laws, the Company does not assume any obligation to update or revise the forward-looking statements contained herein to reflect events or circumstances occurring after the date of this release.This release also contains references to estimates of mineral resources. The estimation of mineral resources is inherently uncertain and involves subjective judgments about many relevant factors. Mineral resources that are not mineral reserves do not have demonstrated economic viability. The accuracy of any such estimates is a function of the quantity and quality of available data, and of the assumptions made and judgments used in engineering and geological interpretation (including estimated future production from the Project, the anticipated tonnages and grades that will be mined and the estimated level of recovery that will be realized), which may prove to be unreliable and depend, to a certain extent, upon the analysis of drilling results and statistical inferences that may ultimately prove to be inaccurate. Mineral resource estimates may have to be re-estimated based on: (i) fluctuations in commodities prices; (ii) results of drilling, (iii) metallurgical testing and other studies; (iv) proposed mining operations, including dilution; (v) the evaluation of mine plans subsequent to the date of any estimates; and (vi) the possible failure to receive required permits, approvals and licenses or changes to existing mining licenses.Forward-looking statements and information involve significant known and unknown risks and uncertainties, should not be read as guarantees of future performance or results and will not necessarily be accurate indicators of whether or not such results will be achieved. A number of factors could cause actual results to differ materially from the results expressed or implied by such forward-looking statements or information, including, but not limited to: the Company's ability to finance the development of its mineral properties; assumptions and discount rates being appropriately applied to the Study and S-K 1300 Report, uncertainty as to whether there will ever be production at the Company's mineral exploration and development properties; risks related to the Company's ability to commence production at the Project and generate material revenues or obtain adequate financing for its planned exploration and development activities; uncertainties relating to the assumptions underlying resource and reserve estimates; mining and development risks, including risks related to infrastructure, accidents, equipment breakdowns, labour disputes, bad weather, non-compliance with environmental and permit requirements or other unanticipated difficulties with or interruptions in development, construction or production; the geology, grade and continuity of the Company's mineral deposits; the uncertainties involving success of exploration, development and mining activities; permitting timelines; government regulation of mining operations; environmental risks; unanticipated reclamation expenses; prices for energy inputs, labour, materials, supplies and services; uncertainties involved in the interpretation of drilling results and geological tests and the estimation of reserves and resources; unexpected cost increases in estimated capital and operating costs; the need to obtain permits and government approvals; material adverse changes, unexpected changes in laws, rules or regulations, or their enforcement by applicable authorities; the failure of parties to contracts with the company to perform as agreed; social or labour unrest; changes in commodity prices; and the failure of exploration programs or studies to deliver anticipated results or results that would justify and support continued exploration, studies, development or operations. For a more detailed discussion of such risks and other factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements, refer to i-80 Gold's filings with Canadian securities regulators, including the most recent Annual Information Form, available on SEDAR+ at www.sedarplus.ca.Non-IFRS/Non-GAAP Financial Performance Measures The Company has included certain terms or performance measures in this news release that commonly used in the gold mining industry that are not defined under International Financial Reporting Standards ("IFRS") or United States Generally Accepted Accounting Principles ("US GAAP"). This includes: all-in sustaining costs per ounce and cash cost per ounce. Non-IFRS/Non-GAAP financial performance measures do not have any standardized meaning prescribed under IFRS or 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 IFRS US GAAP and should be read in conjunction with the Company's financial statements. Because the Company has provided these measures on a forward-looking basis, it is unable to present a quantitative reconciliation to the most directly comparable financial measure calculated and presented in accordance with IFRS or US GAAP without unreasonable efforts. This is due to the inherent difficulty of forecasting the timing or amount of various reconciling items that would impact the most directly comparable forward-looking IFRS or US GAAP measure that have not yet occurred, are outside of the Company's control and/or cannot be reasonably predicted. Definitions"All-in sustaining costs" is a non-IFRS or US GAAP financial measure calculated based on guidance published by the World Gold Council ("WGC"). The WGC is a market development organization for the gold industry and is an association whose membership comprises leading gold mining companies. Although the WGC is not a mining industry regulatory organization, it worked closely with its member companies to develop these metrics. Adoption of the all-in sustaining cost metric is voluntary and not necessarily standard, and therefore, this measure presented by the Company may not be comparable to similar measures presented by other issuers. The Company believes that the all-in sustaining cost measure complements existing measures and ratios reported by the Company. All-in sustaining cost includes both operating and capital costs required to sustain gold production on an ongoing basis. Sustaining operating costs represent expenditures expected to be incurred at the Project that are considered necessary to maintain production. Sustaining capital represents expected capital expenditures comprising mine development costs, including capitalized waste, and ongoing replacement of mine equipment and other capital facilities, and does not include expected capital expenditures for major growth projects or enhancement capital for significant infrastructure improvements."Cash cost per gold ounce" is a common financial performance measure in the gold mining industry but has no standard meaning under IFRS or US GAAP. The Company believes that, in addition to conventional measures prepared in accordance with IFRS or US GAAP, certain investors use this information to evaluate the Company's performance and ability to generate cash flow. Cash cost figures are calculated in accordance with a standard developed by The Gold Institute. The Gold Institute ceased operations in 2002, but the standard is considered the accepted standard of reporting cash cost of production in North America. Adoption of the standard is voluntary, and the cost measures presented may not be comparable to other similarly titled measures of other companies. For a more detailed breakdown on how these measures were calculated, please see the table below: Total Costs Unit Cost Cost per Ounce ($M) ($/t milled) ($/oz Au) Mining $408 $152 $552 Transportation & Processing $270 $101 $365 Electrical Power $71 $26 $96 G&A, Royalties & Net Proceeds Tax $138 $51 $186 By-Product Credits ($3) ($1) ($4) Total Operating Cost/Cash Cost $883 $330 $1,194 Closure & Reclamation $31 $12 $42 Sustaining Capital $49 $18 $66 All-in Sustaining Costs(1) $963 $360 $1,303 APPENDIXCove Project Detailed Cash Flow Model All amounts are in United States dollars, unless otherwise stated. Cove Underground UNITS TOTAL LOM 2025E 2026E 2027E 2028E 2029E 2030E 2031E 2032E 2033E 2034E 2035E 2036E 2037E 2038E 2039E 2040+1 Y -3 Y -2 Y -1 Y 1 Y 2 Y 3 Y 4 Y 5 Y 6 Y 7 Y 8 Y 9 Y 10 Y 11 Y 12 Y 13+1 MINING Mine Life Years 8 Mineralized Material Mined k tonnes 2,676 - - - - 150.3 156.8 444.3 429.9 452.3 383.7 397.2 261.0 - - - - Waste Moved k tonnes 226 - - - - 33.7 12.2 41.9 41.0 24.5 29.1 31.2 12.5 - - - - Total Moved k tonnes 2,902 - - - - 184.1 169.0 486.1 471.0 476.8 412.9 428.4 273.4 - - - - Mineralized Material Moved Daily tpd 916 - - - - 411.9 429.7 1,217.2 1,177.9 1,239.3 1,051.3 1,088.2 715.0 - - - - Backfill Placed k tonnes 1,756 - - - - 98.7 102.9 291.5 282.2 296.8 251.8 260.7 171.3 - - - - Capitalized Mining k tonnes 467 - - - 3.2 190.8 86.3 39.1 97.7 4.4 45.2 - - - - - - PROCESSING Total Material for Processing k tonnes 2,676 - - - - 150 157 245 272 594 600 397 261 - - - - Au Average Grade g/t Au 10.4 - - - - 8.83 10.06 11.06 11.71 11.32 9.44 9.64 10.78 - - - - Contained Gold '000 oz Au 894 - - - - 37.73 42.73 69.32 80.83 177.59 151.09 102.88 77.39 - - - - Autoclave Processing Total Tonnes Processed k tonnes 1,518 - - - - 81 85 - 86 312 342 351 261 - - - - Gold Grade g/t Au 10.02 - - - - 9.37 10.06 - 12.26 10.94 9.20 9.02 10.78 - - - - Silver Grade g/t Au 8.40 - - - - 3.45 3.50 - 4.58 13.98 9.43 7.15 6.42 - - - - Contained Gold '000 oz Au 489 - - - - 24.3 27.3 - 34.1 109.8 101.1 101.9 90.4 - - - - Contained Silver '000 oz Ag 410 - - - - 9.0 9.5 - 12.7 140.4 103.6 80.7 53.9 - - - - Gold Average Recovery % 86 % - - - - 85.6 % 85.6 % - 85.6 % 85.6 % 85.6 % 85.6 % 85.6 % - - - - Silver Average Recovery % 25 % - - - - 25.0 % 25.0 % - 25.0 % 25.0 % 25.0 % 25.0 % 25.0 % - - - - Recovered Gold '000 oz Au 418 - - - - 20.8 23.4 - 29.1 94.0 86.5 87.2 77.4 - - - - Recovered Silver '000 oz Ag 102 - - - - 2.2 2.4 - 3.2 35.1 25.9 20.2 13.5 - - - - Roaster Processing Total Tonnes Processed k tonnes 1,158 - - - - 70 72 245 185 282 258 46 - - - - - Gold Grade g/t Au 10.89 - - - - 8.20 10.07 11.06 11.45 11.74 9.76 14.37 - - - - - Silver Grade g/t Ag 3.23 - - - - 3.49 4.20 2.69 3.26 3.69 2.66 4.47 - - - - - Contained Gold '000 oz Au 406 - - - - 18.4 23.4 87.1 68.2 106.3 81.0 21.2 - - - - - Contained Silver '000 oz Ag 120 - - - - 7.8 9.8 21.2 19.4 33.4 22.1 6.6 - - - - - Gold Average Recovery % 79 % - - - - 79.2 % 79.2 % 79.2 % 79.2 % 79.2 % 79.2 % 79.2 % - - - - - Silver Average Recovery % 10 % - - - - 10.0 % 10.0 % 10.0 % 10.0 % 10.0 % 10.0 % 10.0 % - - - - - Recovered Gold '000 oz Au 321 - - - - 16.9 19.3 69.3 51.7 83.6 64.6 15.7 - - - - - Recovered Silver '000 oz Au 12 - - - - 0.8 1.0 2.1 1.9 3.3 2.2 0.7 - - - - - Total Tonnes Processed k tonnes 2,675.6 - - - - 150.3 156.8 244.9 271.6 593.9 599.9 397.2 261.0 - - - - Total Gold Production '000 oz Au 739.6 - - - - 37.7 42.7 69.3 80.8 177.6 151.1 102.9 77.4 - - - - Total Silver Production '000 oz Ag 114.5 - - - - 3.0 3.4 2.1 5.1 38.4 28.1 20.8 13.5 - - - - Total Gold Equivalent Production '000 oz Au 741.0 - - - - 37.8 42.8 69.3 80.9 178.1 151.4 103.1 77.6 - - - - REVENUE Gold Price $/oz Au $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 $2,175 Silver Price $/oz Ag $27 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 $27.25 Revenues $M $1,612 - - - - $82 $93 $151 $176 $387 $329 $224 $169 - - - - OPERATING COSTS Mining Costs (incl. backfill) $M $381 - - - - $21.6 $22.4 $62.4 $61.9 $64.2 $54.7 $57.1 $36.2 - - - - Mining Costs (waste) $M $27 - - - - $4.1 $1.5 $5.1 $5.0 $3.0 $3.6 $3.7 $1.5 - - - - Autoclave Processing $M $118 - - - - $6.3 $6.6 - $6.7 $24.4 $26.7 $27.4 $20.4 - - - - Roaster Processing $M $96 - - - - $5.8 $6.0 $20.3 $15.3 $23.3 $21.3 $3.8 - - - - - Transportation $M $56 - - - - $3.2 $3.3 $6.6 $6.4 $12.6 $12.5 $6.9 $4.2 - - - - Electrical Power $M $71 - - - - $7.9 $9.0 $9.1 $8.0 $9.5 $9.1 $8.8 $8.3 $0.8 $0.2 - - G&A $M $58 - - - - $7.2 $7.2 $7.2 $7.2 $7.2 $7.2 $7.2 $7.2 - - - - Total Operating Cost $M $806 - - - - $56.1 $56.0 $110.6 $110.5 $144.1 $135.0 $114.9 $77.8 $0.8 $0.2 - - Refining & Sales $M $1 - - - - $0.1 $0.1 $0.1 $0.2 $0.3 $0.3 $0.2 $0.1 - - - - Royalties & State Taxes $M $79 - - - - $3.3 $4.2 $4.2 $8.1 $21.8 $17.0 $11.7 $8.4 - - - - Mining Costs (mineralized material) $/t mined $142.2 - - - - $144 $143 $140 $144 $142 $143 $144 $139 - - - - Mining Costs (waste) $/t mined $121.4 - - - - $122 $122 $121 $121 $122 $122 $120 $122 - - - - Autoclave Processing $/t milled $78.1 - - - - $78 $78 - $78 $78 $78 $78 $78 - - - - Roaster Processing $/t milled $82.7 - - - - $83 $83 $83 $83 $83 $83 $83 - - - - - Transportation $/t milled $20.8 - - - - $21 $21 $27 $23 $21 $21 $17 $16 - - - - Electrical Power $/t milled $26.5 - - - - $52 $57 $37 $30 $16 $15 $22 $32 - - - - G&A $/t milled $21.5 - - - - $48 $46 $29 $26 $12 $12 $18 $28 - - - - Total $/t milled $301.3 - - - - $266 $266 $168 $247 $231 $231 $238 $244 - - - - CAPITAL EXPENDITURES Contingent Payments $M $7 - - - - - - - - $3.6 $3.6 - - - - - - Pre-Development Capital $M $17 $9.4 $4.6 $3.3 - - - - - - - - - - - - - Capitalized Development & Construction $M $69 - - - $35.3 $34.2 - - - - - - - - - - - Dewatering $M $88 - - - $69.9 $18.0 - - - - - - - - - - - Sustaining Capital $M $49 - - - - - $15.2 $6.8 $14.4 $0.7 $12.0 - - - - - - Total Capital $M $231 $9.4 $4.6 $3.3 $105.2 $52.2 $15.2 $6.8 $14.4 $4.3 $15.6 - - - - - - Reclamation $M $31 $0.2 $0.2 $0.2 $0.8 $0.8 $0.8 $0.8 $0.8 $0.8 $0.8 $0.8 $4.6 $4.6 $4.6 $4.6 $5.8 CASH COSTS & AISC Total Cash Costs (Inc. Royalty) $/oz $1,194 - - - - $1,573 $1,408 $1,658 $1,467 $930 $1,003 $1,227 $1,112 - - - - AISC(1) $/oz $1,303 - - - - $1,595 $1,782 $1,768 $1,656 $938 $1,088 $1,235 $1,171 - - - - CASH FLOW ANALYSIS Revenue $M $1,612 - - - - $82 $93 $151 $176 $387 $329 $224 $169 - - - - Operating Costs Gold & Royalties $M ($886) - - - - ($59) ($60) ($115) ($119) ($166) ($152) ($127) ($86) ($1) ($0) - - Reclamation Accrual $M ($31) - - - - ($2) ($2) ($3) ($3) ($8) ($6) ($4) ($3) - - - - Depreciation $M ($295) - - - - ($13) ($16) ($25) ($32) ($70) ($64) ($44) ($30) - - - - Net Operating Income (Pre-Tax) $M $400 - - - - $8 $15 $8 $22 $143 $107 $50 $49 ($1) ($0) - - Income Taxes $M ($84) - - - - ($3) ($5) ($2) ($6) ($33) ($23) ($11) ($7) $1 $1 $1 $1 Net Income $M $315 - - - - $5 $10 $6 $16 $111 $84 $39 $42 $0 $1 $1 $1 Depreciation $M $295 - - - - $13.3 $16.0 $25.2 $32.1 $70.2 $63.8 $43.5 $30.3 - - - - Reclamation $M - ($0.2) ($0.2) ($0.2) ($0.8) $0.9 $1.1 $2.1 $2.7 $6.8 $5.5 $3.5 ($1.6) ($4.6) ($4.6) ($4.6) ($5.8) Working Capital $M $0 - - - - ($6.9) ($0.1) ($6.3) ($0.4) ($5.5) $1.6 $2.9 $4.7 $9.9 $0.1 $0.0 - Operating Cash Flow $M $610 ($0) ($0) ($0) ($1) $12 $27 $27 $50 $182 $155 $89 $75 $6 ($4) ($4) ($5) Capital Expenditures $M ($231) ($9) ($5) ($3) ($105) ($52) ($15) ($7) ($14) ($4) ($16) - - - - - - NET CASH FLOW $M $379 ($10) ($5) ($3) ($106) ($40) $12 $20 $36 $178 $139 $89 $75 $6 ($4) ($4) ($5) PROJECT ECONOMICS As of Q1/2025 As of Q1/2028 After-tax NPV 5% discounting $M $214 $271 Notes to table above: (1) AISC annual calculations include reclamation costs on a cash basis rather than on an accrual basis. As such, the weighted average of the annual AISC amounts will not agree to the life of mine AISC. SOURCE i-80 Gold Corp WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In

i-80 Gold Announces Positive Updated Preliminary Economic Assessment on the Cove Project, Nevada; After-Tax NPV(5%) of $271 Million with an After-Tax IRR of 30% at US$2,175/oz Au

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