• March 2025 discovery hole ranked 5th highest-grade silver globally in H1 2025
• May-June 2025 drilling confirmed extensions of high-grade silver and gold
• New soil assays indicate potential for extensions and new targets

Barton Gold Holdings Limited (ASX:BGD) announced the assay results of ultrafine soil sampling programs completed at the Tolmer and Black Oak Tank prospects of its South Australian Tarcoola Gold Project. The new assay results indicate potential for extensions of the high-grade 'western silver zone' at Tolmer, as well as the potential for similar new previously untested targets located between the 'western silver zone' and the 'eastern gold zone'. At the Black Oak Tank prospect, the soil assays indicate potential for interpreted structures to host continuous gold mineralization. The Tolmer discovery hole in March 2025 was ranked the 5th highest-grade silver intersection globally in H1 2025, with 6m @ 4,747 g/t Ag from 46m depth. Subsequent drilling in May-June 2025 confirmed extensions of the high-grade silver (200-4,750 g/t Ag) within the 'western silver zone', with the emergence of high-grade gold alongside silver (5-50 g/t Au). The new soil assays provide the first hints of the potential orientation of mineralization at Tolmer, indicating a potential overall northwest-southeast trend to the western silver zone and the potential for material extensions of its high-grade silver-gold footprint. Barton also completed a soil sampling program at the '308' prospect at the Challenger Gold Project, but no material results were generated from this program. Assays for a recent 595.3m diamond drilling program at Tolmer are pending and expected in early November 2025, which will help inform the structural interpretation and guide follow-up targeting.

The pending diamond drilling assays at Tolmer are expected to materially assist the interpretation of local structural controls and guide follow-up drilling targeting.