PT Medco Energi Internasional Tbk : MedcoEnergi January 2026 Investor Presentation

About this update from Pt Medco Energi Internasional Tbk

MEDC‹a›ENERGI January 2026 Investor Presentation PT Medco Energi Internasional Tbk (IDX: MEDC, OTCQX: MDCOY ) | Jakarta, January 2026 2026 GUIDANCE Q4 2025 176 Oil: 47 | Gas: 129 1,183 IPP: 887 | Renew: 296 FY 2025 165-170 ↑ 6-9% YoY 156 Oil: 43 | Gas: 113 Within range 4,550 ↑ 4% YoY 4,371 IPP: 3,276 | Renew: 1,095 ↑ 2% vs guidance 2P Reserves: Increased to 564 mmboe Emissions: Joined OGMP 2.0, methane reduced 41%* 2P RLI: Increased to 11.4 years ESG Rating: MSCI AA | CDP Score B 2C Resources: Increased to 1,023 mmboe Renewables: Power sales increased 25% Power Sales (GWh) Oil & Gas Production (mboepd) 2 * Compared to 2019 Base Year Company Overview 4 Business Strategy 9 Nine-Month 2025 Highlights 23 2026 Guidance 30 Appendix: 32 Operational, Financial, and ESG Oyong Platform, Sampang PSC, East Java 3 The following presentation has been prepared by PT Medco Energi Internasional Tbk. ("Company" or "MedcoEnergi") and contains certain projections, plans, business strategies, policies of the Company and industry data in which the Company operates in, which could be treated as forward-looking statements within the meaning of applicable law. Any forward-looking statements, by their nature, involve risks and uncertainties that could prove to be incorrect and cause actual results to differ materially from those expressed or implied in these statements. The Company does not guarantee that any action, which may have been taken in reliance on this document will bring specific results as expected. The Company disclaims any obligation to revise forward-looking statements to reflect future events or circumstances ‌4 Belida Platform, Block B, Riau Islands 52.4% Market cap 1 : ~USD 2bn 25.7% 21.9% Others Diamond Bridge Medco Daya Abadi Lestari Ownership Structure 1 ~21% Indonesian gas production 2 72% Production sold under long-term gas contracts 52/48 Mix of indexed price and fixed price sales 220% TSR 1 January 2020 to 30 September 2025 Ownership, leadership and key metrics Company Overview Financial Metrics Revenue (USD mn) Realized Oil Price (USD/bbl) 2014 751 97.8 2018 1,138 67.8 2024 2,399 78.0 9M25 1,757 68.3 2026 Board of Directors Realized Gas Price (USD/mmbtu) 5.6 6.4 7.0 7.0 EBITDA (USD mn) 278 523 1,272 946 Capex (USD mn) 334 329 436 297 430 Unit cash cost (USD/BOE) 3 15.4 8.7 8.2 8.8 <10 Market cap (USD bn) 194 714 1,701 2,065 Hilmi Panigoro President Director Operational Metrics 2014 2018 2024 9M25 2026 Production (mboepd) 56 85 152 150 165 - 170 Gas/Liquids (%) 45/55 61/39 73/27 72/28 70/30 2P Reserves (mmboe) 140 282 493 528 2P Reserves Life Index (Years) 17 10.7 10.4 11.2 5 Roberto Lorato Chief Executive Officer Ronald Gunawan Chief Operating Officer Anthony R. Mathias Chief Financial Officer Amri Siahaan Chief Administrative Officer 1 30 September 2025 3 Consists of lifting and general & administration cost 2 Source: Direktorat Jenderal Minyak dan Gas Bumi Kementerian ESDM: Semester 1 2024 Statistics Oil & Gas. 2024 Medco has built a diversified energy and natural resources portfolio anchored in Southeast Asia and the Middle East 72/28 12/4 Onshore/Offshore % of Gas/Liquids Producing Assets 41,052 Tonnes Copper Cathode 44,792 Oz Gold Refined Smelter & Refining Production 528 1 1,023 1 MMBOE Net 2P Reserves Net Contingent MMBOE Resources Oil & Gas Production Guidance 155-160 mboepd 11.2 1 Years Reserves Life Index 6 1 Nine-Month 2025 results, excluding Sakakemang which closed Nov 7, 2025 3,188 2 26% 2 GWh IPP Power Sold Renewable Mix Installed Capacity Power Sales Guidance 4,300 GWh IPP Power Sold Ijen Geothermal 35 MW East Bali Solar PV 25 MWp Phase 1 Operating in 2025 6 Gas-Fired IPPs 2 Operated Operated Geothermal IPPs 2 Solar PV IPPs 2 Nine-Month 2025 results Production Guidance 228 Mlbs Copper 90 Koz Gold ~21% 23.4 4 32.7 4 Medco's Ownership Stake in Amman Mineral, Market Cap ~USD 31.4bn 3 Blb Copper Reserves Moz Gold Reserves Copper & Gold Mining 3 As of 30 September 2025, IPO Market Cap ~USD 7.4bn 4 JORC reserves as of 31 Dec 2024 Three core business lines Oil & Gas Power Copper & Gold Mining OTCQX Listing Launched sponsored ADR on OTCQX: MDCOY Southeast Asia Reaching new heights Acquired operatorship of Growing horizons Oman acquisition, Corridor & Natuna new GSAs 2025 2025 2025 Expanding Sumatra footprint First renewable contract Copper investment Jointly acquired Amman Mineral Nusa Tenggara copper and gold mine Power business Secured full control of Medco Power and established our 3 core business lines expansion Acquired Ophir plc with producing assets in Indonesia, Thailand, and Vietnam 2019 Corridor PSC 2022 2023 2022 2023 Sakakemang and TGI acquisition Energy for growth Further 24% Corridor PSC acquisition Going public PT Medco Energi Internasional Tbk IPO on IDX: MEDC 1994 1980 Signed Sarulla IPP, the world's largest single geothermal contract 2013 1995 2015 2016 LNG entry 2016 2017 Step change in offshore capability 2021 Building the future Obtained 20 years Regional ESG leadership Received MSCI ESG Rating A Going public PT Amman Mineral Internasional Tbk IPO on IDX: AMMN In the beginning Company founded 7 by Arifin Panigoro First acquisition Acquired operatorship in Rimau and South Sumatra PSCs Built DSLNG, the first Indonesian midstream LNG facility Acquired operatorship of South Natuna Sea Block B PSC extension of Senoro-Toili PSC Delivering value through accretive Oil & Gas acquisitions and investments in Power and Mining Diverse energy mix of Oil & Gas, Clean Power, and Copper & Gold Mining Assets Mexico Yemen Thailand Bualuang, Thailand Block South Natuna Simenggaris Onshore Receiving Tarakan West Bangkanai A Sea Block B Facility, Singapore Bangkanai Sarulla Geothermal Samosir Geothermal Riau Gas-fired Bonjol Geothermal Corridor South Sumatra Region Beluga DEB, MEB & ELB Gas-fired North Sokang Kalimantan Sulawesi Donggi-Senoro LNG Tanzania Oman Sakakemang South Sakakemang Amanah EPE & MPE Gas-fired The Energy Building Java Sampang Madura Senoro-Toili Papua Cibalapulang Mini-hydro Pusaka Mini-hydro Ijen Geothermal East and West Bali Solar PVs Sumbawa Solar PV Batu Hijau Elang Production Development Exploration Gas Pipeline West Natuna Transportation System Grissik-Batam-Singapore Grissik-Duri Installed Development Exploration Production Development Exploration 8 Oil & Gas Power Copper & Gold Mining ‌9 Bualuang Platform, Thailand Building diversification and resilience for the long term Expanding successful Oil & Gas business model to support growing energy demand Investing in Clean & Renewable Power and in Copper & Gold Mining to capture long-term growth ESG leadership and committed to long-term decarbonization Energy for Growth Enhancing shareholder returns through disciplined investment, dividends and deleveraging 10

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