Investor Presentaiton

Otway Basin - PEL 155 • Ready to drill prospect at Nangwarry-1 Well location covered by 3D seismic and within pine plantation On trend with Otway Basin, Penola Trough fields 3-way dip, fault sealed closure, high chance of gas charge Analogous to Haselgrove-3/ST-1, Katnook, Ladbroke Grove Top Pretty Hill Fm/ Sawpit Sst Primary Targets Target Depths Total Depth Closure Prospective Resource* (P50 Recoverable) :~3,000 metres/4,100 metres MDRT : 4,350 metres :~2.4km² 35.2 Bcf (Top Pretty Hill) 21.8 Bcf (Sawpit Sst) Katnook, Haselgrove and Ladbroke Grove PEL 494 * Proposed Nangwarry-1 ° Ladbroke Grove Field Katnook Field PEL 155 Salamander-1 Ladbroke Grove-1 Katnook-1 Haselgrove-3/ST-1 EUMERELLA FORMATION Katnook and Windermere Sandstone LAIRA FORMATION Pretty Hill Sandstone Sawpit Shale Sawpit Sandstone VINTAGE ENERGY SA VIC Wynn Haselgrove Field Haselgrove-3/ST-1 Nangwarry Prospect Gas pipeline PEL 155 gas prospects SPEL 155 leads 0 2.5 5 km Gas field PEL 155 VE18-003 Source Rock Gas pool Lateral gas migration pathway Gas prospect-Vertical gas migration pathway Independently certified in accordance with SPE-PRMS guidelines PRETTY HILL FORMATION VE18-02 • Katnook gas plant ~10km to north-west • Haselgrove 3/ST-1 discovery ~8km north Ready to drill prospect, close to infrastructure in proven commercial gas province 11

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