FireFly releases Independent Technical Report for Preliminary Economic Assessment and Resource Estimate

PERTH, Australia, Sept. 22, 2026 (GLOBE NEWSWIRE) — FireFly Metals Ltd (ASX,TSX: FFM) ( FireFly or the Company ) is pleased to announce the release of the Technical Report required by Canadian National Instrument NI43-101 in respect of the Preliminary Economic Assessment and Mineral Resource Estimate ( Technical Report ) announced by the Company on 25 August 2026.

The filed Technical Report contains immaterial updates to capital expenditure for the expansion case scenario which do not impact the overall calculation of net present value ( NPV ) of the Green Bay Ming Mine Copper-Gold Project.

The Technical Report can be accessed on SEDAR+ at www.sedarplus.ca or on the Company’s website at https://fireflymetals.com.au/technical-reports/

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FireFly Metals Ltd (ASX, TSX: FFM) is an emerging copper-gold company focused on growing the high-grade Green Bay Copper-Gold Project in Newfoundland, Canada. The project is advancing towards development, with a Preliminary Economic Assessment showing the potential for a high-grade , low-cost and long-life operation with a pathway to produce 100kt of copper per annum .

The Green Bay Copper-Gold Project is underpinned by 60.2Mt of Measured and Indicated Mineral Resources at 2.43% for 1,464Kt copper equivalent (CuEq) and 23.5Mt of Inferred Mineral Resources at 2.51% for 592Kt CuEq , prepared and disclosed in accordance with the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves ( JORC Code (2012 Edition) ) and Canadian National Instrument 43-101 – Standards of Disclosure for Mineral Projects ( NI 43-101 ).

The Company has a clear strategy to continue growing the Green Bay Copper-Gold Project through resource expansion, new discoveries and advancement towards development.

Further information regarding FireFly Metals Ltd is available on the ASX platform (ASX: FFM), the Company’s website www.fireflymetals.com.au or SEDAR+ www.sedarplus.ca .

The Green Bay Copper-Gold Project comprises the Ming Deposit and the Little Deer Deposit.

The combined Mineral Resource Estimate for the Green Bay Copper-Gold Project referred to in this announcement and set out in Appendix A was first reported in the Company’s ASX announcement dated 25 August 2026, titled ‘Green Bay Copper-Gold Project, Canada Preliminary Economic Assessment and Mineral Resource Update.’

The Mineral Resource Estimate for Little Deer referred to in this announcement was first reported in the Company’s ASX announcement dated 29 October 2024, titled ‘Resource Increases 42% to 1.2Mt of contained metal at 2% Copper Eq.’