CopAur Delivers PEA and 52% Mineral Resource Growth for Kinsley Mountain Gold Project

Vancouver, British Columbia--(Newsfile Corp. - May 27, 2026) - CopAur Minerals Inc. (TSXV: CPAU) (the " Company " or " CopAur ") is pleased to announce the results of the Preliminary Economic Assessment (the " PEA ") for its 100% owned Kinsley Mountain Gold Project (the " Kinsley Mountain Gold Project ", " Kinsley " or the " Project ") in eastern Nevada 80 km south of West Wendover. Summary of PEA Results Base Case (US$3,200/oz Au): Post-tax NPV (5%) of US$39 million, post-tax IRR of 20%, and post-tax payback period of 2.5 years, as per Table 1. Long-Term Consensus Gold Price (US$4,000/oz Au): Post-tax NPV (5%) of US$104 million, post-tax IRR of 49%, and post-tax payback period of 1.8 years.

Spot Gold Price (US$4,500/oz Au): Post-tax NPV (5%) of US$147 million, post-tax IRR of 66%, and post-tax payback period of 1.5 years. Production: An average of 30,000 ounces of gold produced per year for the first four years, with production anticipated to commence in the first half of 2028, as per Table 2. Strong Margins at Current Gold Prices: Pre-tax cash costs of US$1,570, All in Sustaining Costs (AISC) of US$1,861/oz, and AISC plus Capital Recovery plus Estimated Taxes of US$2,755/oz.

Capital: Pre-production capital expenditure (CAPEX) of US$81.8 million, and total Life of Mine (LOM) capital of US$117.4 million, including US$33.1 million for pre-stripping. Mineral Resource Estimate: A 52% growth over the previous Mineral Resource Estimate (" MRE ") to 742,000 Indicated ounces at 1.11 grams-per-tonne (" g/t ") gold (" Au ") and 69,000 Inferred ounces at 1.98 g/t Au, which includes 384,000 Indicated ounces at 5.32 g/t Au within the high-grade Secret Canyon zone. " For a modest-scale operation with a short life mine, we believe that the PEA demonstrates some compelling economic potential that may support advancement toward development.

In addition, near surface oxide mineralization remains open to the north of the existing open pit providing potential opportunit