20250321_MEDC_Laporan Informasi dan Fakta Material_31870232_lamp1.pdf

PT Medco Energi Internasional Tbk                            Tel +62-21 2995 3000
The Energy 53rd Fl., SCBD Area Lot 11 A                      Fax +62-21 2995 3001
Jl. Jend. Sudirman, Jakarta 12190                            www.medcoenergi.com
Indonesia




                 MedcoEnergi Completes Rebonjaro 3D Seismic Acquisition in Corridor Block


Jakarta, 19 March 2025 – PT Medco Energi Internasional Tbk (MedcoEnergi), through its subsidiary Medco
E&P Grissik Ltd., in collaboration with SKK Migas, has successfully completed an extensive 3D seismic
survey in the Rebonjaro Field, Corridor Block, South Sumatra.

The seismic acquisition covered approximately 165 square kilometers, generating critical subsurface data
to guide future exploration well activities. This effort reflects Medco’s long-term strategy to enhance
resource potential and sustain production across the block, ensuring continued energy supply reliability.
The Rebonjaro seismic survey utilized advanced wireless acquisition technology to capture high-resolution
imaging, while minimising environmental impact.

The Corridor Block supplies gas to multiple domestic buyers, including PT Perusahaan Gas Negara (PGN),
PT Pertamina Hulu Rokan, PT Pupuk Sriwijaya, PT Perusahaan Listrik Negara, and PT Energasindo Heksa
Karya, in accordance with government allocations. As of February this year, Corridor’s gas supplies are 5%
higher than the targets set in the 2025 Work Program & Budget, confirming strong operational performance
and efficiency.

Ronald Gunawan, Director & COO MedcoEnergi stated, “Corridor strong production performance and
safety records confirm Medco’s commitment to operational excellence and sustainable energy
development. Our continued investments in exploration, development and production optimisation are
crucial for ensuring reliable gas supply, strengthening Indonesia’s energy security, and supporting
economic growth.”
PT MedcoEnergi Energi Internasional Tbk (“MedcoEnergi”) is a leading Southeast Asian energy and natural resources company listed on the Indonesia Stock
Exchange (MEDC-IDX). MedcoEnergi has three key business segments, Oil & Gas, Power and Copper Mining. MedcoEnergi explores for and produces oil and
gas primarily in Indonesia. The Group operates gas, PV, geothermal and hydro power plants in Indonesia through MedcoEnergi Power and has a non-
consolidated interest in PT Amman Mineral Internasional Tbk which operates a large copper and gold mine.

This document may contain projections, plans, strategies, policies and objectives of MedcoEnergi which should be treated as forward looking statements within
the meaning of applicable law. Forward looking statements, by their nature, involve risks and uncertainties that could cause actual results to differ materially
from those expressed or implied in these statements. The Company does not guarantee that any action taken in reliance on this document will bring specific
results.

                                                       For further information please call:
                            Corporate Secretary | Investor Relations | Tel: (62-21) 2995 3000, Fax: (62-21) 2995 3001
                             Email: corporate.secretary@medcoenergi.com | investor.relations@medcoenergi.com
                                                        Website: www.medcoenergi.com