Kodiak Copper Reports Positive Results from Metallurgical Testwork on the MPD Project

About this update from Kodiak Copper Corp.

Vancouver, British Columbia--(Newsfile Corp. - May 28, 2026) - Kodiak Copper Corp. (TSXV: KDK) (OTCQB: KDKCF) (FSE: 5DD1) (the "Company" or "Kodiak") today reports results from its second metallurgical program conducted on samples from the Company's 100%-owned MPD copper-gold project in southern British Columbia. The testwork built on the positive results from the Company's initial metallurgical program in 2025 and continued to return robust recoveries and concentrates while demonstrating that the grind size needed to achieve liberation is within acceptable industry parameters. The results reinforce that the deposits at MPD are amenable to a traditional sulphide flotation flowsheet. Highlights Optimized rougher flotation testwork demonstrated improved performance relative to the previous metallurgical work, with less energy invested into liberation due to a higher grind size. Rougher recoveries of up to 91.1%, 81.4% and 80.4% for copper, gold and silver respectively, were achieved while increasing grind size to a P80 of 150 µm. The first locked-cycle test was completed, simulating continuous processing conditions using flowsheet parameters consistent with regional copper operations. The test confirmed stable and repeatable flotation performance with overall cleaner concentrate recoveries of 78.7% copper, 60% gold, and 49.3% silver. Gold recovery was improved in both rougher testwork and locked cycle tests. It was confirmed that a portion of gold is present as free gold and that the application of gravity recovery processes may provide an opportunity to further improve gold recovery. As part of its ongoing technical work programs, Kodiak will continue to advance metallurgical studies, including variability testing and process optimization, to further improve performance. Claudia Tornquist, President and CEO of Kodiak, said, "The results of the recent metallurgical testwork are positive, with improvements that will potentially benefit the future economics of the project. Increasing the grind size and identifying opportunities to improve gold recovery are particularly encouraging. The completion of the first locked cycle test was also an important step forward since this work more closely reflects performance in a production-scale plant. We look forward to continue building our knowledge and de-risking the project through further metallurgical test...

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