i-80 Gold intercepts 16.2 g/t Au over 56.4 m at Archimedes Underground

i-80 Gold Announces Additional High-Grade Assay Results From Archimedes Underground Including 16.2 g/t Au Over 56.4 Meters; Updates Timing of 2026 Technical Studies PR Newswire TORONTO , June 25, 2026 /PRNewswire/ - i-80 GOLD CORP. (NYSE: IAUX) (TSX: IAU) ("i-80 Gold", or the "Company")  is pleased to announce the remaining assay results from the completed 2025-2026 infill drill campaign within the upper 426 zone of the Archimedes Underground Project ("Archimedes" or the "Project"), situated on the Company's Ruby Hill property in northeastern Nevada, USA, where development remains on schedule to achieve first gold in the fourth quarter of 2026 (see Figure in Appendix). Further, as the Company continues to optimize the sequencing of its development plan, the timing of feasibility-level technical studies for Granite Creek underground and Cove underground is being extended from the second quarter of 2026 to the third quarter of 2026. Highlights From Remaining Drill Results 16.2 g/t Au over 56.4 m in hole iAU26-09 (sulfide) 21.9 g/t Au over 20.2 m in hole iAU26-11 (sulfide) 11.0 g/t Au over 26.1 m in hole iAU26-13 (sulfide) 7.3 g/t Au over 33.1 m in hole iAU26-08 (sulfide) 5.4 g/t Au over 56.5 m in hole iAU26-17 (oxide) "These drill results from the upper 426 zone at Archimedes are excellent, demonstrating significant widths and continuity of high-grade material that extends the known mineralized area," stated Paul Chawrun, EVP and COO.

"We expect the mineralization at Archimedes to expand based on the latest results and as we advance a larger drill program currently underway within the lower 426 zone and Ruby Deeps zone, which is expected to be complete in advance of a planned feasibility study in 2027. These results, combined with the positive drill results  previously released from Granite Creek