3D Energi (TDO) Investor presentation summary

Strategic positioning and market opportunity

• Holds the largest disclosed prospective gas resource in the Otway Basin, with 51 prospects and a 9.2 Tcf mean prospective resource (gross), spanning VIC/P79 and T/49P permits.

• Positioned to supply Victoria's tightening gas market as legacy fields decline, with proximity to infrastructure for rapid development.

• Cluster-based exploration strategy enables scalable development hubs and flexibility to scale investment with success.

• Entry of major partners (ConocoPhillips, KNOC) and O.G. Energy highlights basin's growing recognition and investment interest.

Exploration and drilling program

• Multi-well offshore exploration campaign in 2025, with two firm wells in Phase 1 and up to four optional wells in Phase 2.

• Phase 1 targets Essington-1 (262 Bcf gross mean, 76%/68% COS) and Charlemont-1 (93 Bcf gross mean, 81% COS), both supported by modern 3D seismic and DHI.

• Charlemont Cluster is high-graded for near-term drilling, with ~1 Tcf mean prospective resource (gross) and seven amplitude-supported prospects.

• Regia Cluster offers 1.4 Tcf mean prospective resource (gross), with a new 1,000+ km² 3D seismic survey planned to mature future targets.

Portfolio and resource details

• Portfolio grouped into six clusters, balancing near-field, infrastructure-led, and frontier plays for both near-term value and long-term growth.

• Largest prospective resource in the offshore Otway Basin, with 1.8 Tcf net mean to TDO and 9.2 Tcf gross mean across all clusters.

• Southern clusters (Flanagan, Whistler Point, British Admiral, Seal Rocks) provide frontier-scale upside, with Flanagan alone at 3 Tcf gross mean.

• Modern 3D seismic and DHI support materially reduce exploration risk, with a 94% success rate for amplitude-supported prospects in the basin.