Seascape Energy Asia (SEA) investor relations material

Temaris expansion and resource potential

• Temaris PSC area increased 45% to 1,770 km², with the full enlarged area benefiting from enhanced fiscal terms; extension effective Jan-27.

• Existing-area CPR identified ~1 Tcf; mean Prospective Resources are 950 bcf and 2C Resources are 275 bcf.

• Seismic reprocessing identified an extension of the proven Miocene channel system; gas-charged seismic amplitudes are evident across the enlarged PSC in multiple horizons.

• New 3D seismic acquisition over the extension is planned for late 2026 through a PETRONAS-sponsored regional programme; an updated CPR is underway.

Development and execution timeline

• Project workstreams include completed seismic reprocessing and reservoir modelling, ongoing wellhead-platform engineering, completed pipeline market sounding, and host engagement with gas-sales negotiations underway.

• Field development plan submission is imminent; the project is targeting first gas in H2 2028, with material gas production targeted in ~18 months.

• Indicative production is 100 mmscfd; the development concept includes a pre-built pipeline spur, third-party host facility, six spare well slots and a riser.

• A contingent exploration well is planned post-production start; firm work commitments are funded from existing cash resources.

Portfolio upside

• Farm-out process is underway, with strong industry interest in an execution-ready development and its exploration upside.

• Kertang drilling is less than 12 months away, offering exposure to multi-Tcf exploration opportunities.