Intimation of Credit Rating

OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT ONGC/CS/SE/2026-27 09.10.2026 National Stock Exchange of India Ltd. BSE Limited Listing Department Corporate Relationship Department Exchange Plaza Phiroze Jeejeebhoy Towers, Dalal Street, Bandra-Kurla Complex Fort Mumbai- 400001 Bandra (E), Mumbai – 400 051 BSE Security Code Equity: 500312 Symbol - ONGC; Series – EQ NCDs: 959881 Sub: Intimation of Credit Rating Madam/Sir, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015), it is hereby informed that Care Edge Ratings has reaffirmed the Ratings assigned to bank facilities and instruments of the Company for the following Facilities/ instruments: - Facilities/ Instruments Name of the Amount Rating Rating Action Regulator (₹ in crore) Long-term / Short-term bank RBI 17,500.00 CARE AAA; Stable / Reaffirmed facilities CARE A1+ Long-term bank facilities RBI 7,500.00 CARE AAA; Stable Reaffirmed Short-term bank facilities RBI 10,000.00 CARE A1+ Reaffirmed Non-convertible debentures SEBI 7,500.00 CARE AAA; Stable Reaffirmed Commercial paper RBI 10,000.00 CARE A1+ Reaffirmed This is for your information and records. 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, CIN: L74899DL1993GOI054155 Website: www.ongcindia.com Email: secretariat@ongc.co.in