The Board has approved the Unaudited Financial Results for the quarter ended 30.06.2026

OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT ONGC/CS/SE/2026-27 04.08.2026 National Stock Exchange of India Ltd. BSE Limited Listing Department Corporate Relationship Department Exchange Plaza Phiroze Jeejeebhoy Towers Bandra-Kurla Complex Dalal Street, Fort Bandra (E) Mumbai – 400 001 Mumbai – 400 051 BSE Security Code No: 500312 Symbol - ONGC; Series – EQ NCD: 959881 Sub: Outcome of Board Meeting Madam/ Sir, It is informed that, the Board of Directors of the Company at its meeting held today i.e. 04.08.2026, has inter-alia considered and approved the following business item: - Integrated Financial Results (Standalone and Consolidated) for the quarter ended 30th June, 2026 The Board of Directors has approved the Unaudited Financial Results (Standalone and Consolidated) along with limited review report(s) of the Auditors thereon for the Quarter ended 30th June, 2026. Pursuant to Regulation 33 & 52 of SEBI (LODR) Regulations, 2015, Financial Results (Standalone and Consolidated) along with limited review report(s) of the Auditors thereon for the quarter ended 30th June, 2026 are enclosed as “Annexure-A”. Disclosure under Regulation 52(7) & (7A) and Regulation 54(3) of SEBI Listing Regulations, 2015 The Company had ₹10,000 million unsecured Non-Convertible Debentures (NCDs) as on 30.06.2026. Security Cover certificates are not applicable under Regulation 54 of SEBI (LODR) Regulations, 2015, as these are Unsecured NCDs. Disclosures submitted to the Stock Exchange w.r.t utilization of proceeds of NCDs and not applicability of security cover is enclosed as “Annexure-B”. The Meeting of Board of Directors commenced at 16:55 hrs and concluded at 18:40 hrs. This is for your information and record please. Thanking You, Yours Sincerely, for Oil and Natural Gas Corporation Ltd. (Shashi Bhushan Singh) Company Secretary & Compliance Officer Regd. Office: Plot No 5A-5B, Nelson Mandela Marg, Vasant Kunj, New Delhi-110070 Phone: 011-2675 4073, 011-2675 4085 EPABX: 2675 0111, 2629000 FAX: 011-26129081 CIN: L74899DL1993GOI054155 Website: www.ongcindia.com Email: secretariat@ongc.co.in Laxmi Tripti & Associates Manubhai & Shah LLP V Sankar Aiyar & Co. Chartered Accountants Chartered Accountants Chartered Accountants SL-2, Door No’s 146-149, 4th Floor, Capital One, A-601, Mangalya Building, Old No. 15, Alsa Mall, Ambli Bopal Road, Off. Marol Maroshi Road, Monteith Road, Egmore, Ahmedabad – 380 058 Andheri (E), Chennai – 600 008 Mumbai – 400 059 Talati & Talati LLP Rama K Gupta & Co. Chartered Accountants Chartered Accountants A-393, Basement, P-889, Lake Town Road, Defence Colony, Kolkata – 700 089 New Delhi – 110 024 Independent Auditors’ Limited Review Report on the Quarterly Unaudited Standalone Financial Results of Oil and Natural Gas Corporation Limited ("the Company") for the Quarter and Three Months Ended June 30, 2026 pursuant to the requirements of Regulations 33 and 52 of the SEBI (Listing Obligation and Disclosure Requirements) Regulations, 2015, as amended. The Board of Directors of Oil and Natural Gas Corporation Limited 1. We have reviewed the accompanying Statement of Unaudited Standalone Financial Results of Oil and Natural Gas Corporation Limited ("the Company") for the quarter ended June 30, 2026 (hereinafter referred to as “the Statement"), being submitted by the Company pursuant to the requirements of Regulation 33 and 52 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended (“the Listing Regulations”). 2. This Statement, which is the responsibility of the Company's Management and approved by the Company’s Board of Directors, has been prepared in accordance with the recognition and measurement principles laid down in the Indian Accounting Standard 34 "Interim Financial Reporting" ("Ind AS 34"), prescribed under Section 133 of the Companies Act, 2013 as amended, read with relevant rules issued thereunder and other accounting principles generally accepted in India and in compliance with Regulations 33 and 52 of the Listing Regulations. Our responsibility is to express a conclusion on the Statement based on our review. Page 1 of 4 Laxmi Tripti & Associates Manubhai & Shah LLP V Sankar Aiyar & Co. Chartered Accountants Chartered Accountants Chartered Accountants Talati & Talati LLP Rama K Gupta & Co Chartered Accountants Chartered Accountants 3. We conducted our review of the Statement in accordance with the Standard on Review Engagements (SRE) 2410, "Review of Interim Financial information performed by the Independent Auditor of the Entity" issued by the Institute of Chartered Accountants of India. This standard requires that we plan and perform the review to obtain moderate assurance as to whether the Statement is free from material misstatement. A review of interim financial information consists of making inquiries, primarily of the Company's personnel responsible for financial and accounting matters and applying analytical and other review procedures. A review is substantially less in scope than an audit conducted in accordance with Standards on Auditing and consequently does not enable us to obtain assurance that we would become aware of all significant matters that might be identified in an audit. Accordingly, we do not express an audit opinion. 4. Based on our review conducted as stated in paragraph 3 above, nothing has come to our attention that causes us to believe that the accompanying Statement, prepared in accordance with applicable Indian Accounting Standards specified under Section 133 of the Companies Act, 2013 as amended, read with relevant rules issued thereunder and other accounting principles generally accepted in India, has not disclosed the information required to be disclosed in terms of the Regulations 33 and 52 of the Listing Regulations, including the manner in which it is to be disclosed, or that it contains any material misstatement. 5. Emphasis of Matter We draw attention to the following matters in the Notes to the Statement: - (i) Note no. 1, in respect of the Statement reviewed and approved directly by the Board of Directors of the Company on August 04, 2026, as the Audit Committee could not be reconstituted by that date due to non-availability of Independent Directors on the Board of the Company and hence, the Audit Committee meeting could not be held on that date. (ii) Note No. 4, in respect of pending finality of Arbitration Tribunal Award on various issues related to Production Sharing Contract with respect to Panna Mukta and Mid and South Tapti contract areas (PMT JV), demand of USD 1,624.05 million equivalent to Rs. 15,365 Crore as on June 30, 2026 (Rs. 15,225 Crore up to March 31, 2026) on the Company, to the extent of the Company’s participating interest in the PMT JV, by Directorate General of Hydrocarbons considered as contingent liability for the reason stated in the said note. Page 2 of 4 Laxmi Tripti & Associates Manubhai & Shah LLP V Sankar Aiyar & Co. Chartered Accountants Chartered Accountants Chartered Accountants Talati & Talati LLP Rama K Gupta & Co Chartered Accountants Chartered Accountants (iii) Note no. 5, in respect of Service Tax / GST levied on royalty on crude oil and natural gas, though demands raised by the Tax Authorities on such Service Tax / GST have been disputed, the Company has accounted for the same as provision in the books. Further, disputed demand due to penalty and other differences on such taxes of Rs. 2,200 Crore (Rs. 2,187 Crore up to March 31, 2026) and with respect to Joint Venture blocks, share of such taxes together with interest thereon of Rs. 6,934 Crore (Rs. 6,683 Crore up to March 31, 2026) for other joint venture partners not paid by them till March 31, 2026 have been considered as contingent liabilities for the reasons stated in the said note. (iv) Note no. 6, in respect of refund of Rs. 2,088 Crore (Rs. 2,088 Crore up to March 31, 2026) of Terminal Excise Duty receivable from Director General of Foreign Trade, Gove [Showing first 8,000 characters — download PDF for full document]