Investor Presentation

Hindustan Oil Exploration Company Limited ‘Lakshmi Chambers’, 192, St. Mary’s Road, Alwarpet, Chennai - 600 018. INDIA. : 91 (044) 66229000 ● Fax: 91 (044) 66229011 / 66229012 E-mail: contact@hoec.com ● Website: www.hoec.com CIN: L11100GJ1996PLC029880 November 6, 2026 By Online The Listing Department The Corporate Relationship Department National Stock Exchange of India Ltd., BSE Limited, “Exchange Plaza”, Bandra Kurla Complex, 1st Floor, P. Jeejeebhoy Towers, Bandra (East), Mumbai – 400 051 Dalal Street, Mumbai – 400 001 Stock Code: HINDOILEXP Stock Code: 500186 Dear Sir/Madam, Sub: Earnings presentation In connection with the Earnings Call scheduled on November 6, 2026, please find attached the Earnings Presentation. We request you to kindly take the same on records and disseminate to public. Yours Sincerely, For Hindustan Oil Exploration Company Limited Baroruchi Mishra Managing Director & CEO DIN: 09223144 Encl.: a/a Registered Office: ‘HOEC HOUSE’, Tandalja Road, Off Old Padra Road, Vadodara - 390 020. INDIA. : 91 (0265) 2330766 ● E-mail: contact@hoec.com ● Website: www.hoec.com EARNINGS PRESENTATION Q2 & H1 FY27 | November Disclaimer No representation or warranty, express or implied, is made as to, and no reliance should be placed on, the fairness, accuracy, completeness or correctness of the information or opinions contained in this presentation. Such information and opinions are in all events not current after thedate of this presentation. Certain statements made in this presentation may not be based on historical information or facts and may be "forward looking statements"based on the currently held beliefs and assumptions of the management of Hindustan Oil Exploration Company Limited (“Company” or “HOEC”)which are expressed in good faith and in their opinion reasonable, including those relating to the Company’s general business plans and strategy, its future financial condition and growth prospects and future developments in its industry and its competitive and regulatory environment. Forward-looking statements involve known and unknown risks, uncertainties and other factors, which may cause the actual results,financial condition, performance or achievements of the Company or industry results to differ materially from the results, financial condition, performance orachievements expressed or implied by such forward-looking statements, including future changes or developments in the Company’s business, its competitive environmentand political, economic, legal and social conditions. Further, past performance is not necessarily indicative of future results. Given these risks, uncertainties and other factors, viewers of this presentation are cautioned not to place undue reliance on these forward-looking statements. The Company disclaims any obligationto update these forward-looking statements to reflect future events or developments. This presentation is for general information purposes only, without regard to any specific objectives, financial situations or informational needs of any particular person. This presentation does not constitute an offer or invitation to purchase or subscribe for any securities in any jurisdiction, including the United States. No part of it should form the basis of or be relied upon in connection with any investment decision or any contract or commitment to purchase or subscribe for any securities. None of our securities may be offered or sold in the United States, without registration under the U.S. Securities Act of 1933, as amended, or pursuant to an exemption from registration there from. This presentation is confidential and may not be copied or disseminated, in whole or in part, and in any manner. Page 2 AGENDA HOEC – At a Glance Asset-wise Updates `` Financials Glossary HOEC – At a Glance HOEC at a Glance Performance Snapshot as of September 30, 2026 Corporate Structure H1 FY27 Market Cap Revenue* EBITDA* PAT* Financial ₹2,000 Cr# ₹275.8 Cr ₹63.2 Cr ₹25.1 Cr 100% 100% Highlights 33% 5% 46%  HindageOilfield GeopetrolInt’l Services Ltd Inc. 100% Q2 FY27 Q2 FY26 H1 FY27 H1 FY26 Geopetrol Production 50% Gross Production (BOEPD) 5,988 4,789 5,405 5,576 Mauritius Ltd Levels Net Production (BOEPD) 1,963 2,017 1,907 2,396 GeoEnpro Petroleum Ltd # As of November 6, 2026; * Consolidated financials Page 5 Asset portfolio across key resource-rich locations in India Asjol North Balol Camba Palej Dirok INDIA Umatara Kharsang Assam Reserves (MMBOE) Sept-26 Arakan Block-19 1P Reserves 74.5 2P Reserves 104.4 Mumbai High PY-1 Cauvery B-15 B-80 PY-3 B-174 Onshore Offshore Onshor Offshor Onshore Oil Well Oil Well e Gas e Gas Exploratio Page 6 Q2FY27 at a Glance | Key Business Updates 1/3 Mumbai High:  B15: Field Development Plan preparation for the DSF block underway.  B80: Workover of D1/D2 and drilling of 3 new wells under preparation; contracting near completion. Workover targeted to begin Q3 2026.  Export Gas Compressor configuration modified to lower suction pressure, enabling higher well production through reduced back pressure.  B174: New DSF block awarded to HOEC with 100% interest under DSF IV round. Kharsang:  Workover completed on 4 wells following completion of a 9-well campaign in a single financial year. Asset-wise Updates  Contract awarded for drilling 9 additional wells, starting Q4 FY2026-27.Oil production ramped up 2x; two wells show higher gas potential, currently constrained by evacuation options.  Gas pipeline route survey contract being finalized.  Discussions initiated with local stakeholders, including tea gardens/CGD, for potential local gas sales. Dirok:  Revised Field Development Plan approved by MoPNG/DGH, enabling PSC extension for another 10 years.  HOEC working with stakeholders to fast-track gas evacuation routes.  HMGPP O&M taken over from EXPRO North Sea Limited (UK) effective 14 October 2026.  North Dirok: Land filling for drilling pad and access road completed; infrastructure remained unaffected by the Assam floods. Page 7 Q2FY27 at a Glance | Key Business Updates 2/3 Cambay:  CB-ON/7: 10-year PSC extension granted on 17 August 2026, effective 23 November 2025.  PSC amendment under final review with DGH/MoPNG; signing of the R2 area awaited from MoPNG.  Palej:Production increased 20% following processing plant modifications; targeting 2x production with new Sucker Rod Pumps in Q3 FY2026-27.  North Balol:PCP installation in NB-11 underway to increase crude oil production. Asset-wise Updates  Asjol:Preparation underway for drilling 2 development wells. Cauvery:  Coiled tubing intervention to get 3 wells on full production -Contract Awarded to SLB; Q4 Mobilization planned. Page 8 Q2FY27 at a Glance | Key Business Updates 3/3 Dispute with HPCL on Crude Sales • Sept 2026 | HPCL raised a dispute highlighting quality of crude oil sold; now on path of resolution • As sales revenue of ~INR 260 crore was held up due to the ongoing dispute, investments in our well drilling plans to ramp up production had to be deferred. • HPCL and HOEC agreed to cancel the invoice and sell to third parties. Sales ongoing. • Production reduced from B80 due to high water cut on one well. Workover planned post Other Updates monsoon. National Gas Grid Connectivity • Dirok Production : Production below potential due to lack of evacuation route to take full capacity of Dirok field . • Discussions on going with stakeholders to increase capacity of the evacuation pipelines. Page 9 Asset-wise Updates HOEC 2P Reserves cross 100 MMBOE with B174 award Share of HOEC Net 1P Net 2P Block signed Basis share (MMboe) (MMboe) B-80 100% 23.15 35.53 53.6% GCA 2020 NET TO HOEC AAP-ON-94/1 (Dirok) 26.882% 8.84 13.51 20.4% GCA 2024 PY-1 100% 7.72 10.38 15.7% FDP / RFDP MCR 1P: 74.5 MMBOE Kharsang 35% 1.83 3.23 4.9% FDP / RFDP MCR PY-3 21% 2.53 3.15 4.8% FDP / RFDP MCR 2P: 104.4 MMBOE Cambay (4 fields) 25–50% 0.44 0.44 0.7% FDP / RFDP MCR Signed statement 44.51 66.25 100% total Non drilled B-15 (DSF – 100% 13.13 1 [Showing first 8,000 characters — download PDF for full document]