Business Responsibility and Sustainability Report for Financial Year 2025-26.

OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT ONGC/CS/SE/2026-27 07.08.2026 National Stock Exchange of India Ltd. BSE Limited Listing Department Corporate Relationship Department Exchange Plaza Phiroze Jeejeebhoy Towers Bandra-Kurla Complex, Bandra (E) Dalal Street, Fort Mumbai – 400 051 Mumbai – 400 001 Symbol-ONGC; Series – EQ BSE Security Code No. Equity: 500312 NCD: 959881 Subject: Business Responsibility and Sustainability Report for FY’26 Ref: 33rd Annual General Meeting Madam/ Sir, In terms of Regulation 34 of SEBI (Listing Obligations and Disclosure Requirements) Regulations 2015, Business Responsibility and Sustainability Report of the Company for the FY’26 forming part of Integrated Annual Report, is attached. 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 stnemetatS laicnaniF detadilosnoC weivrevO Unified. Digital. Sustainable. Annexures to the Board's Report Integrated Annual Report 2025-26 stnemetatS laicnaniF enoladnatS tropeR s’draoB seruxennA BUSINESS RESPONSIBILITY & SUSTAINABILITY REPORT FY 2025-26 stnemetatS laicnaniF detadilosnoC weivrevO Unified. Digital. Sustainable. Annexures to the Board's Report Integrated Annual Report 2025-26 stnemetatS laicnaniF enoladnatS tropeR s’draoB seruxennA BUSINESS SECTION A RESPONSIBILITY & GENERAL SUSTAINABILITY REPORT DISCLOSURES FY 2025-26 stnemetatS laicnaniF detadilosnoC weivrevO Unified. Digital. Sustainable. Annexures to the Board's Report Integrated Annual Report 2025-26 stnemetatS laicnaniF enoladnatS tropeR s’draoB seruxennA Annexure - C BUSINESS RESPONSIBILITY & SUSTAINABILITY REPORT FY 2025-26 SECTION A: GENERAL DISCLOSURES I. Details of the listed entity 1. NSE Symbol ONGC 2. BSE Scrip Code 500312 3. MSEI Symbol Not Listed 4. ISIN INE213A01029 5. Corporate Identity Number (CIN) of the Listed Entity L74899DL1993GOI054155 6. Name of the Listed Entity Oil and Natural Gas Corporation Limited 7. Date of Incorporation 23-06-1993 8. Registered Office Address Plot No. 5A-5B, Nelson Mandela Road, Deendayal Urja Bhawan, 9. Corporate Address Vasant Kunj, New Delhi-110070, India 10. E-mail secretariat@ongc.co.in 11. Telephone 011-26754002 12. Website www.ongcindia.com 13. Financial Year for which Reporting is being done FY 2025-26 14. Name of the Stock Exchange(s) where shares are listed National Stock Exchange (NSE) Bombay Stock Exchange (BSE) 15. Paid-up Capital ` 62,901,396,030.00 16. Name and contact details of the person who may be contacted in case of any queries a) Name Mr. Anurag Tripathi Group General Manager-Head CM&SG b) Contact 011-26752318 c) E-mail chief_cmsg@ongc.co.in 17. Reporting Boundary Standalone basis 18. Name of Assurance Provider Bureau Veritas (India) Private Limited 19. Type of Assurance Obtained Reasonable II. Products/services 20. Details of business activities (accounting for 90% of the turnover): S. No. Description of Main Activity Description of Business Activity % of Turnover of the Entity 1. Mining & Quarrying Extraction of Crude Petroleum & Natural Gas 90.67% 21. Products/Services sold by the entity (accounting for 90% of the entity’s Turnover): S. No. Product/Service NIC Code % of Total Turnover Contributed 1. Crude Oil 06101/06102 63.25% 2. Natural Gas 06201/06202 27.42% 3. Liquefied Petroleum Gas 19201 3.04% Note: For S. No. 1: NIC Code 06101 is for Offshore and 06102 is for Onshore For S. No. 2: NIC Code 06201 is for Offshore and 06202 is for Onshore III. Operations 22. Number of locations where plants and/or operations/offices of the entity are situated. Location Number of Plants Number of Offices Total National 17 24 41 International 0 0 0 stnemetatS laicnaniF detadilosnoC weivrevO Unified. Digital. Sustainable. Annexures to the Board's Report Integrated Annual Report 2025-26 stnemetatS laicnaniF enoladnatS tropeR s’draoB seruxennA 23. Markets served by the entity: a. Number of locations Location Number National (Number of states) 12 International (Number of countries) 0 b. What is the contribution of exports as a percentage of the total turnover of the entity? 0%, as there were no export sales during 2025-26. c. A brief on types of customers The Company’s significant revenues are derived from sales to Oil Marketing Companies (OMCs). ONGC is a producer of Crude oil and Natural Gas and supplies crude oil to Refineries engaged in refining of Crude Oil and marketing of Petroleum products in India. The major customers/refiners are IOCL, BPCL, HPCL, MRPL, GAIL, etc. IV. Employees 24. Details as at the end of Financial Year: a. Employees and workers (including differently abled): Total (A) Male Female S. No. Particulars No. (A) No. (B) %(B/A) No. (C) %(C/A) EMPLOYEES 1 Permanent (D) 13,781 12,404 90.01% 1,377 9.99% 2 Other than Permanent (E) 282 238 84.40% 44 15.60% 3 Total employees (D + E) 14,063 12,642 89.90% 1,421 10.10% WORKERS 4 Permanent (F) 9,336 8,828 94.56% 508 5.44% 5 Other than Permanent (G) 594 537 90.40% 57 9.60% 6 Total Workers (F + G) 9,930 9,365 94.31% 565 5.69% Note: • Permanent Employees: Refers to Executives • Other than Permanent Employees: Refers to term-based employees (e.g., field executives) and other executives such as consultants • Permanent Workers: Refers to non-executives • Other than Permanent Workers: Refers to term-based workers (e.g., Field Operators) and contractual workers b. Differently abled Employees and workers: Total (A) Male Female S. No. Particulars No. (A) No. (B) %(B/A) No. (C) %(C/A) DIFFERENTLY ABLED EMPLOYEES 1 Permanent (D) 313 272 86.90% 41 13.10% 2 Other than Permanent (E) 0 0 0 0 0 3 Total employees (D + E) 313 272 86.90% 41 13.10% DIFFERENTLY ABLED WORKERS 4 Permanent (F) 210 183 87.14% 27 12.86% 5 Other than Permanent (G) 0 0 0 0 0 6 Total Workers (F + G) 210 183 87.14% 27 12.86% stnemetatS laicnaniF detadilosnoC weivrevO Unified. Digital. Sustainable. Annexures to the Board's Report Integrated Annual Report 2025-26 stnemetatS laicnaniF enoladnatS tropeR s’draoB seruxennA 25. Participation/Inclusion/Representation of women Total (A) No. and percentage of Females No. (B) % (B/A) Board of Directors 8 0 0.00% Key Management Personnel 7 0 0.00% Note: The Board of Directors comprised six Whole-time Directors and two Government Nominee Directors and KMPs include 6 whole-time Directors and 1 Company Secretary as on 31st March 2026 26. Turnover rate for permanent employees and workers FY 2025-26 FY 2024-25 FY 2023-24 Male Female Total Male Female Total Male Female Total Permanent Employees 7.8% 4.3% 7.4% 0.6% 0.9% 0.6% 0.6% 1.2% 0.6% Permanent Workers 3% 4.8% 3.1% 0.1% 0.4% 0.1% 0.3% 0.4% 0.3% Note: In FY 2025-26, Employee turnover rates have increased significantly. This increase is attributed to a change in calculation methodology, wherein turnover rate has been calculated in accordance with the SEBI-provided guidance note for BRSR, based on the number of employees who separated during the financial year, as a percentage of the average employee strength in the respective category. Employee separations include resignations, retirements, terminations, dismissals, and deaths in service V. Holding, Subsidiary and Associate Companies (including joint ventures) 27. A. Names of holding / subsidiary/associate companies / joint ventures S. Name of the holding/subsidiary/associate Indicate whether % of shares Does the entity indicated at No. companies/joint ventures (A) holding/Subsidiary/ held by column A, participate in the Associate/Joint listed Business Responsibility initiatives Venture entity* of the listed entity? (Yes/No) 1 ONGC Videsh Limited (OVL) Subsidiary 100% No 2 Hindustan Petroleum Corporation Limited (HPCL) Subs [Showing first 8,000 characters — download PDF for full document]