General Updates

OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT ONGC/CS/SE/2026-27 01.11.2026 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: Disclosure under Regulation 30 of SEBI (LODR) Regulations, 2015 Change in Senior Management Madam/ Sir, Pursuant to Regulation 30 read with Schedule III of the SEBI (LODR) Regulations, 2015, it is hereby informed that change in senior management (one level below the Board) is as under: - Name Designation Type of Change Effective Date Mr. Sanjay Kumar Singh Executive Director Superannuation 01.11.2026 Ms. Deepali Masirkar Executive Director Appointment – On Deputation 28.10.2026 Brief Profile of Ms. Deepali Masirkar is enclosed. 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 OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT Brief Profile of Ms. Deepali Masirkar Ms. Deepali Masirkar is an officer of the Indian Police Service (2008 Batch, Nagaland Cadre). She holds B.Sc, degree from St. Francis College affiliated to Osmania University, Hyderabad, Bachelor of Law (LL.B.) from Mumbai University and Master of Public Administration in International Political Economy from the London School of Economics and Political Science (LSE), As an Indian Police Service Officer, she has served in various supervisory positions in the State of Nagaland, including Assistant Commandant, Sub-Divisional Police Officer (SDPO), Superintendent of Police (SP), and Deputy Inspector General (DIG) over a span of six years. On inter-cadre deputation with Maharashtra Police (2014–2019), she worked as DCP at Nagpur and Mumbai and handled important roles such as Law & order, Crime, Economic Offences, Cyber Crime etc. From May 2022 to January, 2025, she served as Director, Election Commission of India, overseeing the Election Planning, Accessibility & Inclusion Division, as well as the territorial divisions of Uttar Pradesh and Manipur. She played an active role in the successful conduct of the Parliamentary Elections of the country in 2024. Before joining ONGC as ED-Chief Security, she was posted as Director with the Ministry of Tribal Affairs where she was monitoring flagship schemes to ensure development of tribal communities. 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