Oil & Natural Gas Corporation Ltd

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 ONGC/CS/SE/2025-26 18.11.2025 National Stock Exchange of India Ltd. Listing Department Exchange Plaza Bandra-Kurla Complex, Bandra (E) Mumbai – 400051 Symbol-ONGC; Series – EQ BSE Limited Corporate Relationship Department Phiroze Jeejeebhoy Towers Dalal Street, Fort Mumbai – 400001 BSE Security Code Equity: 500312 NCD: 959881 Sub: Conference call with Analyst(s) & Investor(s): Outcome (Transcript) Madam/ Sir, This has reference to our earlier communication dated 11.11.2025 and 06.11.2025 on the subject noted above. In terms of Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, it is informed that transcript of the subject call has been uploaded at the website of the Company and may be accessed at https://ongcindia.com/web/eng/transcription This is for your reference and record. Thanking you, Yours Sincerely, for Oil and Natural Gas Corporation Ltd. (Shashi Bhushan Singh) Company Secretary & Compliance Officer Shashi Bhushan Singh Digitally signed by Shashi Bhushan Singh DN: c=IN, o=Personal, title=8196, pseudonym=7E31B035811A31CE40C689B87ED8C8DF, 2.5.4.20=3346dded8f1e1a176eb558f67d1a264c46bf55 21199b083ec6a6392de4fc980f, postalCode=201301, st=Uttar Pradesh, serialNumber=2FDBEA7CE644801D7D8B41B7DC9520 3E5304C81742052CD20E0BCA2A57770D63, cn=Shashi Bhushan Singh Date: 2025.11.18 19:02:39 +05'30'