PT Medco Energi Internasional Tbk : MedcoEnergi Commences Trading on the OTCQX Best Market

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PT Medco Energi Internasional Tbk Tel +62-21 2995 3000 The Energy 53 rd Fl., SCBD Area Lot 11 A Fax +62-21 2995 3001 Jl. Jend. Sudirman, Jakarta 12190 https://www.medcoenergi.com Indonesia ‌MedcoEnergi Commences Trading on the OTCQX Best Market Jakarta, 22 November 2025 - PT Medco Energi Internasional Tbk (IDX: MEDC; OTCQX: MDCOY) ("MedcoEnergi" or the "Company") today announced that its sponsored American Depositary Receipts (ADRs) have commenced trading on the OTCQX® Best Market under the ticker symbol "MDCOY." This is another milestone in MedcoEnergi's capital markets strategy, with this initiative we are providing U.S. equity investors with streamlined and efficient access to the Company's shares through a regulated and transparent trading platform. Roberto Lorato, CEO of MedcoEnergi, stated, "As the first Indonesian issuer to join OTCQX, MedcoEnergi continues to enhance its visibility and accessibility to a broader international investor base. This further strengthens our investor base, increases liquidity for existing IDX shareholders and supports our long-term value creation strategy." The OTCQX Best Market provides companies listed on qualified international exchanges with the ability to utilize their home market reporting to make financial information readily available to U.S. investors. Companies trading on OTCQX must meet high financial standards, follow best practice corporate governance, and demonstrate compliance with applicable securities laws. PT Medco 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 & Gold 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 Medco Power and has a non-consolidated interest in Amman Mineral Internasional Tbk which operates a large copper and gold mine in Indonesia. This document may contain projections, plans, strategies, policies and objectives of MedcoEnergi which should be treated as f orward 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: [email protected] | [email protected] Website: https://www.medcoenergi.com

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