• Significant assays from drilling at Achilles North, Lord Henry, Vanguard, and Shillington-Two Mile Hill deposits
• Drilling aimed to infill key deposits and test for growth extensions
• Sandstone Mineral Resource upgrade and Pre-Feasibility Study targeted for 2026

Brightstar Resources has received results from reverse circulation (RC) drilling at the 2.4Moz @ 1.5g/t Au Sandstone Hub, completed in late 2025. The drilling was designed to infill key deposits the subject of ongoing Pre-Feasibility Study (PFS) work streams, as well as test for growth extensions along strike and down dip. Significant assays were returned from the Achilles North, Lord Henry, Vanguard, and Shillington-Two Mile Hill deposits, including high-grade intercepts up to 125g/t Au. The infill drilling at Vanguard and Two-Mile Hill Shillington was designed to increase confidence and has confirmed the grades in the current resource being used for feasibility study and mine planning purposes. Brightstar is pleased with the results, which continue to impress and provide the necessary technical information to underpin the upcoming Mineral Resource upgrade and pre-feasibility study. The upside potential of Sandstone is considered enormous, with ~1,800km2 of prospective tenure in underexplored greenstone belts. With 1.6Moz of Mineral Resources located in the top 150m from surface, Brightstar is well-funded and favourably positioned to continue to grow the Sandstone resource base and rapidly de-risk the eventual development of Sandstone into a meaningful Western Australian gold production hub.

The Sandstone Mineral Resource upgrade is due in June 2026, with the Pre-Feasibility Study targeted for delivery in early September 2026. The 2026 drilling campaign has now commenced with the arrival of RC and diamond drill rigs at Sandstone to complete the last of the infill drilling for PFS work streams and commence extensional drilling targeting growth to the Mineral Resources.