Investor Presentaiton

Greater Poseidon overview 40% operated position in a series of gas fields in the Browse Basin, 950km from Darwin¹ Santos + 40% Santos (operator) 1, 40% Origin, 20% PetroChina + + + Pro-forma 2018 year-end 2C resource of 410 mmboe (gross), 164 mmboe (net) 8 wells drilled in 2 campaigns in WA-315-P and WA-398-P since 2009 (Poseidon-1) 7 discoveries in ~500m water depth, adjacent to Santos Crown- Lasseter discoveries + No outstanding commitments + Lower Vulcan, Plover reservoirs at 4900-5000mSS, tested at rates up to 34 mmscf/d, CGR 10-22 bbl/mmscf + Post 2025 dated development opportunity with Darwin LNG expansion an option + Retention Licence application lodged September 2018 Argus WA-57-R WA-58-R WA-274-P WA-315-P WA-79-R Crown WA-74-R WA-81-R Poseidon TP/28 WA-84-R Lasseter WA-85-R WA-398-P WA-281-P WA-80-R WA-86-R Torosa Browse Trunkline Brecknock Facilities. Gas Pipeline Proposed Gas Pipeline Offshore Boundaries Gas Field Oil Field Santos Acreage Greater Poseidon Acreage 1 Santos to acquire ConocoPhillips' interests in and operatorship of Darwin LNG, Bayu-Undan, Barossa and Poseidon, subject to third-party consents and regulatory approvals. Western Australia & Northern Territory Site Visit 2019 WA-281-P Crux to Prelude ------- Ichthys PRELUDE ° FLNG Ichthys to Darwin ICHTHYS Burnside WA-281-P Santos 37

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