i-80 Gold posts high-grade Archimedes drill results

i-80 Gold Corp. reported new high-grade assay results from infill drilling at the Archimedes Underground Project on its Ruby Hill property in Nevada, with a standout intercept of 24.6 g/t gold over 23.6 meters in hole iAU26-05.

Rhea-AI Filing Summary

i-80 Gold Corp. reported new high-grade assay results from infill drilling at the Archimedes Underground Project on its Ruby Hill property in Nevada, with a standout intercept of 24.6 g/t gold over 23.6 meters in hole iAU26-05. The program targets Upper Archimedes, where 7,500 meters over 35 holes have largely completed the 2025–2026 drilling campaign and continue to confirm the geological model.

As of December 31, 2025, Archimedes hosts an indicated gold mineral resource of 436,000 ounces at 7.6 g/t and an inferred resource of 988,000 ounces at 7.3 g/t. Development remains on schedule, with about 1,200 meters of underground development completed and first gold from Upper Archimedes expected in the third quarter of 2026. A larger infill program of roughly 55,000 meters at Lower Archimedes is planned, supporting a new mineral resource estimate and feasibility study targeted for the first quarter of 2027, consistent with a PEA that outlined an approximately 10-year mine life and average annual gold output of about 100,000 ounces after ramp-up.

8-K Event Classification

2 items: 7.01, 9.01

2 items

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

Indicated gold resource: 436,000 ounces at 7.6 g/t Inferred gold resource: 988,000 ounces at 7.3 g/t Highlight intercept: 24.6 g/t Au over 23.6 meters +4 more

7 metrics

Indicated gold resource 436,000 ounces at 7.6 g/t Archimedes, as of December 31, 2025

Inferred gold resource 988,000 ounces at 7.3 g/t Archimedes, as of December 31, 2025

Highlight intercept 24.6 g/t Au over 23.6 meters Drillhole iAU26-05, Upper Archimedes

Mine life and output 10 years, ~100,000 oz/year Archimedes PEA, after production ramp-up

Infill drilling completed 7,500 meters over 35 holes Upper Archimedes 2025–2026 program

Planned Lower Archimedes drilling 55,000 meters over 140 holes Anticipated to begin in Q2 2026

Underground development completed 1,200 meters Archimedes, as of end of Q1 2026

Key Terms

indicated gold mineral resource, inferred gold mineral resource, preliminary economic assessment, toll milling agreement, +2 more

6 terms

indicated gold mineral resource financial

"As of December 31, 2025, Archimedes hosts an indicated gold mineral resource of 436,000 ounces"

inferred gold mineral resource financial

"and an inferred gold mineral resource of 988,000 ounces at 7.3 grams per tonne(1)"

preliminary economic assessment financial

"mineral resource estimate supporting the preliminary economic assessment for Archimedes, prepared in accordance with NI 43-101"

A preliminary economic assessment is an initial analysis that estimates the potential profitability and feasibility of a project or resource, such as a new mineral deposit or development venture. It provides a rough idea of costs, benefits, and risks, helping investors decide whether to pursue more detailed studies. This early evaluation is important because it offers a snapshot of whether the project is worth further investment and development.

toll milling agreement financial

"underground material from Archimedes will be processed through a third-party toll milling agreement"

A toll milling agreement is a contract where one company pays a processor to grind, mill or otherwise transform its raw materials into finished or semi‑finished products while the material owner keeps legal title and pays a fee for the service. For investors it matters because it lets a business avoid buying expensive production plants, affecting costs, margins, supply‑chain risk and operational flexibility—like renting a specialized workshop instead of owning it.

heap leach pad technical

"the presence of an operating heap leach pad, the Company is currently evaluating the potential"

A heap leach pad is a large, engineered outdoor area where crushed ore is stacked and soaked with a liquid that dissolves and carries out valuable metals, like gold or copper, for later recovery — imagine a giant soak-bed that extracts metal instead of color. Investors care because the pad’s size, design, chemical and water needs, recovery efficiency and environmental controls directly affect a mine’s production costs, output, permitting risks and potential cleanup liabilities.

National Instrument 43-101 regulatory

"qualified persons within the meaning of National Instrument 43-101 - Standards of Disclosure for Mineral Projects"

National Instrument 43-101 is a set of rules and guidelines that govern how mineral exploration and mining companies must report information about their projects. It ensures that the details shared with investors are accurate, consistent, and reliable—similar to how a detailed, verified blueprint ensures a building’s safety. This helps investors make informed decisions based on trustworthy information about a company's mineral resources.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did i-80 Gold Corp. (IAUX) announce about the Archimedes Underground Project?

i-80 Gold announced new high-grade assay results from infill drilling at the Archimedes Underground Project in Nevada. The results confirm previously interpreted mineralization at Upper Archimedes and support mine planning, resource conversion and a future feasibility study for the project.

What are the current gold resources at i-80 Gold’s Archimedes project (IAUX)?

As of December 31, 2025, Archimedes hosts an indicated gold mineral resource of 436,000 ounces at 7.6 grams per tonne and an inferred gold mineral resource of 988,000 ounces at 7.3 grams per tonne, primarily in the Ruby Deeps (Lower Archimedes) zone.

What high-grade drill intercepts were highlighted at Archimedes by i-80 Gold (IAUX)?

The company highlighted several high-grade intercepts, including 24.6 grams per tonne gold over 23.6 meters in drillhole iAU26-05. Multiple other holes reported multi-meter intervals grading above 5 grams per tonne, supporting continuity of high-grade mineralization at Upper Archimedes.

When does i-80 Gold (IAUX) expect first gold from Archimedes and planned production levels?

The company continues to expect first gold mined from Upper Archimedes in the third quarter of 2026. A prior preliminary economic assessment outlined an approximately 10-year mine life with average annual gold output of about 100,000 ounces after ramp-up at Archimedes.

How is development progressing at i-80 Gold’s Archimedes Underground Project (IAUX)?

Development at Archimedes is advancing on schedule, with about 1,200 meters of underground development completed by the end of the first quarter of 2026. Project costs are largely in line with budget, and predictive groundwater models and dewatering infrastructure are being advanced.

What are i-80 Gold’s (IAUX) plans for Lower Archimedes drilling and feasibility work?

Following completion of Upper Archimedes drilling, an infill program of about 55,000 meters over 140 holes is anticipated for Lower Archimedes starting in the second quarter of 2026. Results will support a new mineral resource estimate and a feasibility study expected in the first quarter of 2027.

How does i-80 Gold (IAUX) plan to process Archimedes ore and use oxide mineralization?

Until the Lone Tree processing plant refurbishment is completed, underground material from Archimedes will be treated through a third-party toll milling agreement. The company is evaluating the potential to integrate newly identified oxide mineralization at Upper Archimedes into the mine plan for additional economic ounces.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/14/2026 - 01:59 PM EDT Learn about SEC filing dates

00-0000000 0001853962 false 0001853962 2026-04-08 2026-04-08 0001853962 us-gaap:CommonStockMember 2026-04-08 2026-04-08 0001853962 us-gaap:WarrantMember 2026-04-08 2026-04-08

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report: April 8, 2026 (Date of earliest event reported)

i-80 GOLD CORP.

(Exact Name of Registrant as Specified in Its Charter)

British Columbia		001-41382		N/A
(State or other jurisdiction of incorporation)		(Commission File Number)		(I.R.S. Employer Identification)

150 York Street, Suite 1802, Toronto, Ontario M5H 3S5

(Address of principal executive offices) (Zip Code)

(775) 525-6450

(Registrant’s Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a -12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d -2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e -4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Shares		IAUX		NYSE American LLC
Warrants to Purchase Common Shares		IAUX.WS		NYSE American LLC
Common Shares		IAU		The Toronto Stock Exchange
Warrants to Purchase Common Shares		IAU.WT.U		The Toronto Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01. Regulation FD Disclosure

On April 8, 2026, i-80 Gold Corp. (the “Company”) issued a press release titled “i-80 Gold Reports High-Grade Assay Results at Archimedes Underground Project Including 24.6 g/t Au over 23.6 Meters; Development Advancing on Schedule” A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information contained in this Item 7.01 and Exhibit 99.1 attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.		Description
99.1		News Release, dated April 8, 2026
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: April 14, 2026

i-80 GOLD CORP.
By:		/s/ Ryan Snow
Name:		Ryan Snow
Title:		Chief Financial Officer

Exhibit 99.1

i-80 Gold Reports High-Grade Assay Results at Archimedes Underground Project Including 24.6 g/t Au Over 23.6 Meters; Development Advancing on Schedule

TORONTO, ON, April 8, 2026 – i-80 GOLD CORP. (TSX: IAU) (NYSE American: IAUX) (“i-80 Gold”, or the “Company”) is pleased to announce assay results from its recent drilling campaign at the Archimedes Underground Project (“Archimedes” or the “Project”), located on the Company’s Ruby Hill property at the southeastern end of the Battle Mountain-Eureka Trend in northeastern Nevada, United States (see Figure 1 in Appendix).

The Company commenced construction of Archimedes, the Company’s second underground project, in the third quarter of 2025. Material from Archimedes, in addition to Granite Creek underground, is expected to begin feeding the Company’s Lone Tree processing plant by late 2027, subject to the completion of the plant’s proposed refurbishment. Until that time, the Company’s underground material from Archimedes will be processed through a third-party toll milling agreement.

As of December 31, 2025, Archimedes hosts an indicated gold mineral resource of 436,000 ounces at 7.6 grams per tonne and an inferred gold mineral resource of 988,000 ounces at 7.3 grams per tonne⁽¹⁾. The majority of the resource is currently hosted in the Ruby Deeps zone, which is situated below the 5100-foot elevation within the deposit (“Lower Archimedes”) (see Figure 2 in Appendix).

These drilling results confirm previously interpreted mineralization in the upper 426 zone (“Upper Archimedes”) and demonstrate continuity, as well as the potential to extend mineralization beyond the boundaries defined by the mineral resource estimate supporting the preliminary economic assessment for Archimedes, prepared in accordance with NI 43-101, and the corresponding Initial Assessment, prepared under Subpart 1300 of Regulation S-K (“S-K 1300”), each filed on March 31, 2025⁽²⁾ (the “PEA”). Upper Archimedes is situated above the 5100-foot elevation level within the deposit.

Highlights From Infill Holes at Upper Archimedes

• 24.6 g/t Au over 23.6 m in hole iAU26-05 (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)

• 6.1 g/t Au over 42.1 m in hole iAU25-14 (oxide)

• 3.9 g/t Au over 44.3 m in hole iAU26-03 (oxide)

True widths are estimated between approximately 40% - 65% of core width.

“Drilling continues to return consistent and positive results that are improving our confidence in both the scale and continuity of mineralization at Archimedes,” stated Tyler Hill, Vice President, Geology. “These results provide a solid foundation for ongoing development, and reinforce the broader potential of the Project. The consistency of high-grade results that we are seeing across this drill campaign is similar to the drill campaigns conducted on the Company’s other two underground projects, for which feasibility studies are expected to be released this quarter. In addition to the high-grade sulfide mineralization, the emerging oxide opportunity at Upper Archimedes has the potential to provide meaningful low-cost economic ounces

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in the near-term, with metallurgical testwork underway. With development advancing on schedule, Archimedes is on plan as we target first gold mined in the third quarter of this year.”

Upper Archimedes Drilling

Infill drilling commenced in the fourth quarter of 2025 with a focus on further delineating Upper Archimedes in preparation for the anticipated extraction of mineralized material in the third quarter of 2026. A total of 7,500 meters over 35 holes have been drilled to date, largely completing the 2025-2026 program. New assay results from the first 20 holes presented in Table 1 below continue to demonstrate high-grade mineralization throughout Upper Archimedes, returning high-grade intercepts in targeted drill areas, which are consistent with the current geological model (see Figures 3 and 4 in Appendix). Upper Archimedes drilling will ultimately consist of 36 holes and is expected to be completed in the second quarter of 2026. Results from this program, in conjunction with further drilling in 2026, will be used to support stope design for planned mining activities.

The current drilling program intersected substantial intervals of oxide mineralization that were not included in the 2025 PEA. In light of the current gold price environment and the presence of an operating heap leach pad, the Company is currently evaluating the potential to integrate this oxide material into the Project’s mine plan and production profile.

Lower Archimedes Drilling

Development of an exploration drift to serve as a platform to drill Lower Archimedes commenced ahead of schedule during the first quarter of 2026. Following the expected completion of the Upper Archimedes drill program in the second quarter, an infill drilling program targeting approximately 55,000 meters over 140 holes in Lower Archimedes is anticipated to begin in the second quarter of 2026. Lower Archimedes remains open to the north and south, and at depth, offering substantial exploration potential.

Drilling results from both Upper and Lower Archimedes will form the basis of a new mineral resource estimate and a feasibility study which is expected to be completed in the first quarter of 2027. The updated resource is expected to include approximately 60,000 meters of drilling, of which the majority is infill drilling to define reserves. The overall drill program is primarily focused on infill drilling to enhance confidence in the mine plan, better define the transition boundary of the oxide-sulfide mineralization, confirm the continuity of mineralization, and upgrade inferred resources into the measured and indicated mineral resource categories.

Development at Archimedes Advancing on Schedule

At Upper Archimedes, permitting for mining is complete and construction continues to advance on schedule with the development footage exceeding plan. Approximately 1,200 meters of development for the project has been completed as of the end of the first quarter of 2026. Project costs are largely in line with budget expectations. Predictive groundwater models for Archimedes have advanced, including the installation of an additional dewatering well in the first quarter of 2026. The Company continues to expect to mine first gold within Upper Archimedes in the third quarter of 2026.

Permitting activities for Lower Archimedes are underway with an estimated completion by mid-2027, while reviewing opportunities to expedite the timeline. This sequential permitting approach allows the Company to expedite mining activities, while finalizing approvals for Lower Archimedes.

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Results from the PEA outlined an approximate 10-year mine life with an average annual gold output of approximately 100,000 ounces, following production ramp up⁽²⁾ (to view the announcement, click here).

Table 1: Assay Results From Upper Archimedes Drilling

Drillhole ID		Type				Oxidation		From (m)				To (m)				Length (m)				Au (g/t)
iAU25-01			Core			Sulfide			151.2				156.0				4.8				5.6
And			Core			Sulfide			189.9				192.8				2.9				9.2
And			Core			Oxide			195.4				223.7				28.3				6.6
iAU25-02			Core			Sulfide			129.7				148.7				19.0				7.0
And			Core			Sulfide			157.9				171.6				13.7				6.9
And			Core			Oxide			171.6				192.9				21.3				4.1
iAU25-03			Core			Sulfide			108.8				119.5				10.7				5.4
And			Core			Sulfide			154.7				161.6				6.9				10.3
iAU25-04			Core			Sulfide			153.3				162.5				9.1				14.0
And			Core			Oxide			197.5				212.8				15.2				2.1
iAU25-05			Core			Oxide			139.9				155.9				16.0				2.7
iAU25-06			Core			Sulfide			125.9				133.2				7.3				12.7
And			Core			Oxide			145.1				163.8				18.7				7.3
iAU25-07			Core			Sulfide			133.2				146.9				13.7				12.1
iAU25-08			Core			Sulfide			132.0				146.6				14.6				9.5
And			Core			Oxide			170.8				194.5				23.7				3.1
iAU25-09			Core			Sulfide			113.7				121.1				7.4				6.0
And			Core			Sulfide			139.5				176.0				36.4				10.2
iAU25-10			Core			Sulfide			121.8				124.5				2.7				4.0
iAU25-11			Core			Sulfide			126.7				147.2				20.4				11.0
And			Core			Oxide			147.2				163.4				16.2				3.3
iAU25-12			Core			Oxide			95.4				101.3				5.9				4.3
And			Core			Oxide			149.4				162.2				12.8				4.4
iAU25-13			Core			Sulfide			135.1				145.4				10.2				8.1
iAU25-14			Core			Sulfide			104.2				119.5				15.2				9.3
And			Core			Oxide			129.9				172.0				42.1				6.1
iAU25-15			Core			Sulfide			130.8				151.5				20.7				5.3
And			Core			Oxide			176.0				183.9				8.0				2.5
iAU26-01			Core			Sulfide/Oxide			135.0				181.4				46.4				8.0
Includes			Core			Oxide			151.1				171.5				20.5				5.3
And			Core			Sulfide			186.5				188.9				2.4				12.8
iAU26-02			Core			Oxide			146.3				166.1				19.8				2.3
iAU26-03			Core			Sulfide			134.1				140.8				6.7				13.8
And			Core			Oxide			140.8				185.0				44.3				3.9
iAU26-04			Core			Sulfide			104.5				111.7				7.2				10.3
And			Core			Oxide			130.5				168.3				37.9				2.9
iAU26-05			Core			Sulfide			128.2				151.8				23.6				24.6
And			Core			Sulfide			170.1				176.6				6.5				5.7

Notes to table above:

Numbers may not add due to rounding. True widths are estimated between approximately 40%-65% of core width.

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Table 2: Drillhole Collar Coordinates

UTM		Drillhole ID				East (m)				North (m)				Elevation (m)				Azimuth				Dip
NAD83 Zone 11			iAU25-01				587369				4375860				1774				003				-44
			iAU25-02				587369				4375860				1774				001				-51
			iAU25-03				587355				4375820				1779				324				-35
			iAU25-04				587369				4375860				1774				352				-42
			iAU25-05				587355				4375820				1779				327				-31
			iAU25-06				587369				4375860				1774				350				-57
			iAU25-07				587354				4375820				1779				316				-36
			iAU25-08				587369				4375860				1774				350				-50
			iAU25-09				587354				4375820				1779				315				-32
			iAU25-10				587369				4375860				1774				344				-43
			iAU25-11				587354				4375820				1779				306				-36
			iAU25-12				587368				4375860				1774				331				-55
			iAU25-13				587354				4375820				1779				299				-38
			iAU25-14				587368				4375860				1774				332				-59
			iAU25-15				587354				4375820				1779				297				-34
			iAU26-01				587354				4375820				1779				292				-32
			iAU26-02				587368				4375860				1774				322				-46
			iAU26-03				587354				4375820				1779				290				-38
			iAU26-04				587368				4375860				1774				319				-59
			iAU26-05				587354				4375820				1779				386				-30

Technical Disclosure and Qualified Persons

The technical information contained in this press release has been prepared under the supervision of, and has been reviewed and approved by Paul Chawrun P.Eng., Chief Operating Officer, and Tyler Hill CPG., Vice President, Geology, for the Company, each of whom are qualified persons within the meaning of National Instrument 43-101 - Standards of Disclosure for Mineral Projects (“NI 43-101”) and S-K 1300.

All samples were submitted to MSALABS (MSA) of Elko, NV, which is an ISO9001 accredited laboratory, independent of the Company. Samples submitted through MSA are crushed to 80% passing 2 mm and analyzed using CPA-Au1 (Au; 500 gram photon assay). MSA also undertakes their own internal coarse duplicate analysis to ensure proper sample preparation and equipment calibration. i-80 Gold’s QA/QC program includes regular insertion of CRM standards, duplicates, and blanks into the sample stream with a stringent review of all results. Mineral resources do not have demonstrated economic viability and are not mineral reserves.

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 Report on Form-10K dated February 19, 2026, as well as the information in respect of data verification, key assumptions, parameters, risks and other factors contained in the PEA and the corresponding Initial Assessment dated March 31, 2025, each as filed under the Company’s profile on SEDAR+ at www.sedarplus.ca and under the Company’s profile on EDGAR at www.sec.gov.

Endnotes

(1) Notes to the Archimedes Underground Mineral Resource estimate: (1) 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; metal price determinations were from 2024 Q3. (2) 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. (3) 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. (4) Detailed input mining, processing, and G&A costs are defined in Section 18.1. (5) Units shown are metric. (6) The contained gold ounces estimates have not been adjusted for metallurgical recoveries. (7) Numbers have been rounded as required by reporting guidelines and may result in apparent summation differences. (8) 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 economic extraction. The location, quantity, grade or quality,

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continuity and other geological characteristics of a mineral resource are known, estimated or interpreted from specific geological evidence and knowledge, including sampling. The dimensions of a minimum minable stope cross section are 20 feet wide x 15 feet high. Individual stope lengths can vary from a minimum of 20 feet to a maximum of 100 feet. (9) 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. (10) 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. (11) Mineral resources in the Ruby Hill Technical Report have an effective date of December 31, 2024. A Qualified Person and employee of Practical Mining LLC, has reviewed the Ruby Hill Underground mineral resources and material assumptions included in the Ruby Hill Technical Report and confirmed that they remain current as of December 31, 2025. (12) The reference point for mineral resources is in situ.

(2) A press release titled “i-80 Gold Announces Positive Preliminary Economic Assessment on the Archimedes Underground Project, Nevada; After-Tax NPV(5%) of $127 Million with an After-Tax IRR of 23% at US$2,175/oz Au” announcing results from the PEA on the Ruby Hill Property covering the Archimedes underground project was filed on February 18, 2025, followed by the filing of the PEA and the corresponding Initial Assessment on March 31, 2025. The PEA was prepared in accordance with NI 43-101 and the Initial Assessment was prepared in accordance with S-K 1300. All documents are accessible under the Company’s issuer profile on both SEDAR+ at www.sedarplus.ca and EDGAR at www.sec.gov, as well as on the Company’s website at www.i80gold.com. The PEA 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 PEA will be realized. Mineral resources do not have demonstrated economic viability and are not mineral reserves.

About i-80 Gold Corp.

i-80 Gold Corp. is a Nevada-focused mining company committed to building a mid-tier gold producer through a fully funded three-phase development plan to advance its high-quality asset portfolio. The Company is the fifth largest gold mineral resource holder in the state with a pipeline of high-grade multi-stage projects strategically located in Nevada’s most prolific gold-producing trends. Leveraging its central processing facility following an anticipated refurbishment, i-80 Gold is executing a hub-and-spoke regional mining and processing strategy to maximize efficiency and growth. i-80 Gold’s shares are listed on the Toronto Stock Exchange (TSX: IAU) and the NYSE American (NYSE: IAUX). For more information, visit www.i80gold.com.

For further information, please contact:

Leily Omoumi, SVP Corporate Development & Strategy

Caterina De Rosa, VP Investor Relations

1.866.525.6450

info@i80gold.com

www.i80gold.com

Cautionary Statement Regarding Forward Looking Information

Certain information set forth in this press release, including but not limited to management’s assessment of the Company’s future plans and operations, expectations regarding the timing, execution and results of the Company’s drilling programs, outlook on gold output, the anticipated timing of gold output, project development or technical studies, including completion of the anticipated Archimedes underground feasibility study and the release of its results, the potential for mineral resource conversion and opportunities for expansion, management’s view on the potential to incorporate Archimedes oxide mineralized material into the Project’s mine plan to provide meaningful low-cost economic ounces in the near-term, the timing of first gold mined and first gold pour, and the timing of Archimedes and Granite Creek underground to begin feeding the Lone Tree processing plant constitute 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, uncertainty in geological, metallurgical and geotechnical studies and opinions, and ability to access sufficient capital from internal and external sources such as selling assets, restructuring debt or obtaining additional equity capital on terms that may be onerous or highly dilutive.

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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.

Please see “Risks Factors” in the Form 10-K for the fiscal year ended December 31, 2025 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 press release speak only as of the date of this press release 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. The information included on, or accessible through, the Company’s website is not incorporated by reference into this press release.

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APPENDIX

Figure 1: Regional Map of i-80 Gold Assets in Northern Nevada

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Figure 2: Upper and Lower Mineralized Zones, Archimedes Underground

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Figure 3: Plan View of Archimedes Underground

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Figure 4: Upper Archimedes Cross-Section

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Filing Exhibits & Attachments

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Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 3.5 KB
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• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 22.8 KB
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