Operations Update - May 2026

Highlights

• Total sales revenue for May was A$735,630 net to Bass

• Cooper Basin oil production was 2,508 barrels with 2,156 barrels sold in the month at an average oil price of A$149.87 per barrel

• Indonesian oil production was 4,281 barrels net to Bass, with 4,244 barrels sold at an average oil price of US$101.30 per barrel

• Daily oil production for the group averaged 219 bopd for the month, with total monthly production of 6,789 barrels up 5%

• Bunian 6 oil development well commenced drilling 5 June after the rig successfully completed pre-spud safety and compliance checks

• Vanessa transaction: the regulator is finalising the transfer documentation

• Interpretation of the reprocessed Kiwi 3D seismic dataset showing encouraging results