FireFly assays core at Green Bay

Exceptional assays show why high-grade core stands to super-charge early production profile at FireFly’s Green Bay Latest assays such as 42m @ 6.1% CuEq and 9.8m @ 16.5% CuEq, which demonstrate the outstanding continuity of the high-grade zone, will feed into the impending economic studies KEY POINTS Drilling returns more exceptional results which extend the high-grade core zone and confirm the strong continuity of the mineralisation Given the strength of the results, FireFly will incorporate them into an updated resource model underpinning the economic studies; This means these studies will now be completed in July-August 2026 The results, generated primarily from infill drilling, will be reflected in the Measured & Indicated Resource category; This category is central to the economic studies The results are particularly important because they demonstrate the strong continuity and grade of the high-grade core zone, which will be a key input to the upcoming economic studies The assays continue to demonstrate strong continuity of mineralisation across the upper copper-gold Volcanogenic Massive Sulphide (VMS) lenses, the footwall stringer-style copper zone and the rich high-grade core zone which lies between the two Drilling in the +800m-long high-grade core zone has returned more continuous thick intersections including:      42.0m @ 6.1% copper equivalent ( CuEq ) 1 (4.7% Cu & 1.4g/t Au) including a high-grade VMS zone of 9.8m @ 16.5% CuEq (12.7% Cu & 4.0g/t Au) ( ~ true thickness ) in hole MUG26-053 51.5m @ 4.9% CuEq (4.0% Cu & 0.9g/t Au) including an upper zone grading 17.0m @ 9.1% CuEq (7.5% Cu & 1.7g/t Au) ( ~ true thickness ) in hole MUG26-054 50.2m @ 4.0% CuEq (3.5% Cu & 0.4g/t Au) in hole MUG26-036 34.4m @ 5.0% CuEq (3.8% Cu & 1.2g/t Au) including an upper zone grading 14.3m @ 7.6% CuEq (5.2% Cu & 2.5g/t Au) ( ~ true thickness ) in hole MUG26-028 The high-grade core zone remains open with the deepest hole drilled to date return