Reserves and Resources Statement Summary Cue’s total 2P reserves are 4.5 million barrels of oil equivalent (MMboe). The movement from 5.5 MMboe at 30 June 2025 reflects 0.6 MMboe of production during FY26 and net downward revisions of 0.4 MMboe (~9% of prior year 2P reserves less FY26 production) following updated technical and commercial assessments across the portfolio. Revisions primarily relate to the following: – Mahato: 2P reserves increased by 0.2 MMboe as a result of additional infill drilling opportunities identified within the Bekasap Formation of the PB field. – Sampang: 2P reserves were revised downwards by 0.2 MMboe, primarily due to the deferment of the Grati booster compressor project into FY2027 and Cue’s previously announced intention to withdraw from the Sampang PSC upon licence expiry in December 2027. – Maari: 2P reserves were revised downwards by 0.2 MMboe to reflect the impact of unscheduled downtime and updated economic assumptions, with current estimates indicating cessation of economic production in 2030 based on forecast costs and commodity prices. – Mereenie: 2P reserves were revised downwards by 0.4 MMboe following a performance-based assessment of reservoir behaviour and the current evaluation of future Pacoota Formation infill drilling opportunities 2C contingent resource at Paus Biru and Jeruk (2.4 MMboe) have been de-booked following Cue’s intention to withdraw from the Sampang PSC at licence expiry in December 2027, as previously announced. Prospective gas resources have been identified in a stacked reservoir in Mereenie Footwall with an unrisked 2U volume of 0.7 MMboe. Reserves and Contingent Resources by MMboe (Cue net as at 30 June 2026) 2026 2025 % Change* 1P - Proved Reserves MMboe 2.6 4.2 (28%) 2P - Proved and Probable Reserves MMboe 4.5 5.5 (9%) 2C - Contingent Resources MMboe 3.9 5.6 (30%) 2U - Prospective Resources (unrisked) MMboe 0.7 – Reserves and Contingent Resources by Product (Cue net as at 30 June 2026) Gas PJ Crude and Condensate MMbbl Total MMboe 1P - Proved Reserves 11.3 0.7 2.6 2P - Proved and Probable Reserves 18.1 1.4 4.5 2C - Contingent Resources 14.2 1.4 3.9 2U - Prospective Resources (unrisked) 4.0 – 0.7 * Changes in FY26 divided by FYE25 Reserves less FYE26 production * All volumes quoted in text and tables are Cue net. Refer also Notes 6 and 11. Totals may vary due to rounding. 9 Cue Energy Resources Limited Annual Report 2026
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