DEVELOPMENTS AND POTENTIAL On September 11, 2025, Centerra delivered the results of a PFS, which includes the construction of a second tailings storage facility that is expected to provide the potential for future raises that could add multiple decades of storage capacity beyond the 2045 LOM, and ball mill motor upgrades and flotation cells in 2028 to increase process plant throughput by about 10% (to 66,300 tpd) and increase recovery by approximately 1%.(3) For 2026, Centerra expects to continue to explore the western extension of the Mount Milligan deposit and perform infill drilling to upgrade inferred resources to the indicated category. Approximately 20% of Centerra’s total exploration expenditures are allocated to drilling programs at Mount Milligan to upgrade the inferred resources between Goldmark and North Slope and to expand resources at Saddle West and South Boundary areas. Ongoing exploration continues to highlight the potential to further expand mineral resources and extend mine life beyond the updated 2025 PFS mine plan.(2) After including the effect of the Cost Support Agreement, the combined effect of the cash payments for gold and copper deliveries is as follows: Period: Jan. 1, 2024, through ~2029 ~2030 through ~2035 ~2036 and Beyond Au Cu Au Cu Au Cu Delivery Thresholds(i) defining triggers for cost support payments: (from Jan. 1, 2024) Pre-Threshold(ii) (if Au