Outcome of Board Meeting

OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT ONGC/CS/SE/2026-27 28.07.2026 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.- 500312 NCD: 959881 Sub: Outcome of Board Meeting Madam/ Sir, The Board of Directors of the Company, at its meeting held today i.e. 28.07.2026, has inter-alia approved the proposal to provide Parent Company Guarantee (PCG) of USD 500 million in favour of Saudi Arabian Oil Company (Saudi Aramco) for the period 01.09.2026 to 31.08.2028 on behalf of Mangalore Refinery and Petrochemicals Limited (MRPL), to enable MRPL to import crude oil from Saudi Aramco. MRPL, is a subsidiary of Company. The meeting of Board of Directors commenced at 13:45 hrs and concluded at 15:35 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 CIN: L74899DL1993GOI054155 Website: www.ongcindia.com Email: secretariat@ongc.co.in