• First-time JORC compliant reporting of Mineral Resources and Ore Reserves for Costerfield
• Total Mineral Resources of 1,700 kt grading 7.9 g/t Au and 2.3% Sb
• Total Ore Reserves of 537.1 kt grading 8.7 g/t Au and 2.0% Sb
• Demonstrated life of mine to 2030

Alkane Resources Limited is pleased to report the first-time JORC compliant Mineral Resources and Ore Reserves for the Costerfield Property, located in Victoria, Australia. The Costerfield Property has been in operation since 2006, with multiple ore sources including Augusta, Cuffley, Brunswick, Youle, and Shepherd. The Mineral Resources are stated as at 30 June 2025, with a total of 1,700 kt grading 7.9 g/t Au and 2.3% Sb, including Measured + Indicated of 1,162 kt grading 8.0 g/t Au and 2.6% Sb, and Inferred of 537 kt grading 7.5 g/t Au and 1.8% Sb. The Ore Reserves are stated as at 30 June 2025, with a total of 537.1 kt grading 8.7 g/t Au and 2.0% Sb, including Proved of 296.7 kt grading 10.8 g/t Au and 2.1% Sb, and Probable of 240.4 kt grading 6.0 g/t Au and 1.8% Sb. The Costerfield Property has a demonstrated life of mine to 2030.

The Costerfield Operation has Ore Reserves of 537.1 kt grading 8.7 g/t Au and 2.0% Sb, which supports a life of mine to 2030.