Investor Presentaiton

COOPER ENERGY Otway Basin gas hub-visible near-term growth Six prospects identified with high assessed chance of geological success Otway phase-3 development Development of Annie gas discovery 64.6 PJ 2C (100% basis) 1 through Athena Drilling campaign based around Annie + 2 low-risk exploration wells - Close to market and fast tie-back opportunity Timing of FID now subject to economics and JV alignment Mean Prospective Resources 2,3 Legend Gas pipeline Proposed gas pipeline Umbilical Proposed umbilical Existing well Gas field Gas prospect SEA Gas Port Campbell to Adelaide Pipeline SEA Gas Port Campbell to lona Pipeline South West Pipeline Pecten East Netherby Athena Gas Plant lona Gas Plant Prospect Gross (Bcf) COE net (Bcf) Pg4 Amplitude support Henry Elanora 161 81 67% Isabella 149 74 70% Elanora Heera 86 43 63% Pecten East 76 38 73% Nestor 64 64 81% Juliet 49 24 84% Total 585 325 Otway 181 Annie Minerva Juliet Subsea pipeline (32.6km) Casino Isabella Nestor Heera Plan area Portfolio of high-quality prospects, close to existing infrastructure, provides next wave of growth and cash flow generation 1Annie 2C resource included as part of the Otway Basin 2C number in the FY23 Reserves and Contingent Resources ASX release on the 25 August 2023 | 2Prospective Resources of the unrisked volume estimated to be recoverable from the prospect attributable to the Cooper Energy joint venture interest. The estimated quantities of petroleum that may be potentially recovered by the application of future development project(s) relate to undiscovered accumulations | 3Mean Prospective Resource for the Otway prospects was announced to the ASX on 9 February 2022 | 4Pg represents the estimated probability of finding moveable gas COOPER 8 ENERGY

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