Exhibit 99.1 i-80 Gold Announces Positive Feasibility Study and Initial Mineral Reserves for Granite Creek Underground; After-Tax NPV (5%) of $118 Million at $2,750/oz Au Increasing to $598 Million at $4,500/oz Au Unless otherwise stated, all amounts referred to herein are in U.S. dollars. TORONTO, ON, September 21, 2026 - i-80 GOLD CORP. (NYSE:IAUX) (TSX:IAU) (“i-80 Gold”, or the “Company”) is pleased to announce the results of a feasibility study for the high-grade Granite Creek underground gold project (“Granite Creek Underground” or the “Project”). The Project is situated at the intersection of the highly prolific Battle Mountain-Eureka and Getchell gold trends in northern Nevada, USA. Granite Creek Underground is currently ramping up production and is expected to produce between 30,000 to 40,000 ounces of gold in 2026. The results announced in this press release are supported by two technical reports prepared for Granite Creek Underground: (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 43-1…
Open exhibit ↗Current Report · Items 7.01, 9.01 · 8-K
i-80 Gold Corp.
IAUXNYSE_AMERICANEQUITYCurrent
Regulation FD Disclosure
Item 7.01. Regulation FD Disclosure On September 21, 2026, i-80 Gold Corp. (the “Company”) issued a press release titled “i-80 Gold Announces Positive Feasibility Study and Initial Mineral Reserve for Granite Creek Underground; After-Tax NPV(5%) of $118 Million at $2,750/oz Au Increasing to $598 Million at $4,500/oz Au”.…
Company context
i-80 Gold Corp. is a Nevada-focused mining company committed to building a mid-tier gold producer through a funded three-phase development plan to advance its high-quality asset portfolio. The Company is one of the largest mineral resource holders 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 NYSE (NYSE: IAUX) and the Toronto Stock Exchange (TSX: IAU). For more information, visit www.i80gold.com.
Current securities
Disclosure sections
Item 7.01Item 7.01 - Regulation FD Disclosure
Filed exhibits (2)
Exhibit 99.2 i-80 Gold Announces Initial Assay Results From Mineral Point Open Pit Project in Nevada Including a Step-Out Hole of 1.33 g/t Au and 39.2 g/t Ag Over 225.6 Meters TORONTO, ON, September 22, 2026 - i-80 GOLD CORP. (NYSE: IAUX) (TSX: IAU) (“i-80 Gold”, or the “Company”) is pleased to announce initial drill results from the ongoing 2026 infill drilling campaign at the Mineral Point open pit heap leach project (“Mineral Point” or the “Project”). Mineral Point is a large-scale, advanced-stage oxide gold-silver project and hosts the largest gold and silver mineral resource in i-80 Gold’s portfolio. It is also one of the largest undeveloped bulk-mineable gold-silver resources in Nevada and represents a key driver of anticipated future production growth for the Company. The Project is located on the Company’s wholly owned Ruby Hill property in northeastern Nevada, USA, along the Battle Mountain-Eureka gold trend (see Figure 1 in Appendix). The Ruby Hill property also includes the Archimedes underground project, the Company’s second planned underground mine which is currently under construction and is anticipated to begin gold production in the fourth quarter of 2026. Resu…
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