Oil And Natural Gas Corporation Ltdhas informed BSE that the meeting of the Board of Directors of the Company is scheduled on 05/11/2026 ,inter alia, to consider and approve the following items: 1. Un-Audited Financial Results (Standalone and Consolidated) of the Company for the quarter and half year ended 30th September, 2026; and 2. Recommendation of 1st interim Dividend, if any.

OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT CS/ONGC/SE/2026-27 23.10.2026 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: Intimation of Board Meeting Madam/ Sir, Pursuant to Regulation 29 & 50 read with Regulation 33 and 52 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, it is hereby informed that a meeting of Board of Directors of the Company is scheduled to be held on Thursday, the 5th November, 2026, inter-alia, to consider and approve the following items: 1. Un-Audited Financial Results (Standalone and Consolidated) of the Company for the quarter and half year ended 30th September, 2026; and 2. Recommendation of 1st interim Dividend, if any. Pursuant to the provisions of SEBI (Prohibition of Insider Trading) Regulations, 2015 read with amendment thereto ("Regulations") and the Company's Policy under the said Regulations, Trading Window is closed since 1st October, 2026 for dealing in securities of the Company and shall continue to remain closed till Saturday, 7th November, 2026 for all Insiders. 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