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_{¹ Gold equivalent ounces calculated by multiplying quantities of gold and antimony in period by respective average market price of commodities in period, adding the two amounts to get ‘total contained value based on market price’ and dividing that total contained value by the average market price of gold in period. I.e., AuEq = ((Au Produced x Au $/oz) + (Sb Produced pre-payability x 70% payability x Sb $/t)) / (Au $/oz). Average market prices for gold and antimony sourced respectively from LMBA daily PM price (www.lmba.org.uk) and Shanghai Metal Market Price (www.metal.com). Average market prices for the March quarter were A$7,015/oz Au and A$29,449/t Sb. For the December quarter, the average market prices were A$6,299/oz Au and A$30,245/t Sb and for the September quarter were A$5,382/oz Au and A$33,859/t Sb using an AUD: USD exchange rate of 0.6946, 0.6565 and 0.6544 respectively. Gold equivalent ounce, cash operating cost and all-in sustaining cost (AISC) are non-IFRS performance measures with no standard definition under IFRS. For more details refer to the Non-IFRS Performance Measures section at the end of this press release.
² As the merger with Mandalay Resources completed on 5 August 2025, Alkane’s FY2026 statutory reported production reflects production from Costerfield and Björkdal only from that date. See ALK announcement dated 9 Sep 2025 and titled ‘Alkane Announces Financial Year 2026 Guidance’.}