General Updates

OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT CS/ONGC/SE/2026-27 08.10.2026 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: Disclosure under Regulation 30 of SEBI (LODR) Regulations, 2015 Reg:- Incorporation of ONGC Petrochemicals Marketing Limited (OPML) Madam/ Sir, This is in continuation of our filing dated 25.04.2026, wherein the Company had informed regarding formation of Joint Venture Company (JVC) with shareholding in the ratio of 50:25:25 by ONGC, Mangalore Refinery and Petrochemicals Limited (MRPL) and ONGC Petro additions Limited (OPaL). It is informed that the JVC has been incorporated in the name of “ONGC Petrochemicals Marketing Limited” (OPML) on 07 October 2026 as a public limited company, which shall undertake the business of integrated marketing and trading of petrochemicals, chemicals and kindred products. Information as per requirements of Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with Circular issued by the SEBI, is attached at Annexure -1. 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 Encl: As above 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 OIL AND NATURAL GAS CORPORATION LIMITED COMPANY SECRETARIAT ANNEXURE -1 Information as per SEBI Circular S. No. Particulars Details a) Name of the target entity, details in brief ONGC Petrochemicals Marketing Limited (OPML), a public limited such as size, turnover etc. company incorporated on 07 October 2026. OPML has an authorised and subscribed share capital of ₹50 crore divided into 5 crore equity shares of ₹10 each. Being newly incorporated company, it has no history of operating turnover etc. b) Whether the acquisition would fall within The subscription forms part of the establishment of the joint venture related party transaction(s) and whether the company by ONGC, MRPL and OPaL. Equity shares of the company promoter/ promoter group/ group has been subscribed by ONGC, MRPL and OPaL in the ratio of companies have any interest in the entity 50:25:25. Equity shares have been subscribed at face value and the being acquired? If yes, nature of interest transaction is on an arm’s-length basis. and details thereof and whether the same is done at “arm’s length”? c) Industry to which the entity being acquired Petrochemicals marketing and trading. belongs d) Objects and impact of acquisition (including To establish a single integrated, market-facing platform for marketing but not limited to, disclosure of reasons for and trading petrochemicals, chemicals and kindred products of the acquisition of target entity, if its business is ONGC Group, including branding, business development, pricing, outside the main line of business of the distribution, logistics, customer management, sourcing/trading and listed entity) sales and operations planning. The incorporation is aligned with ONGC’s existing downstream and petrochemicals business. e) Brief details of any governmental or Approval of Department of Investment and Public Asset Management, regulatory approvals required for the Ministry of Finance was obtained. acquisition. Certificate of Incorporation was issued by the Registrar of Companies, Ministry of Corporate Affairs. f) Indicative time period for completion of the Certificate of Incorporation was issued on 07 October 2026. acquisition g) Consideration - whether cash consideration Cash consideration through subscription to equity shares at face or share swap or any other form and details value. of the same. h) Cost of acquisition and/or the price at which ₹25 crore, representing subscription money by ONGC and its nominee the shares are acquired shareholders to acquire 2,50,00,000 equity shares of ₹10 each. i) Percentage of shareholding / control 50% of the equity share capital, comprising 2,50,00,000 equity shares acquired and / or number of shares acquired of ₹10 each, held by ONGC together with its nominee shareholders. j) Brief background about the entity acquired OPML was incorporated in India on 07 October 2026 as a public in terms of products/line of business limited company. It will undertake integrated marketing and trading of acquired, date of incorporation, history of petrochemicals, chemicals and kindred products, along with related last 3 years turnover, country in which the branding, business development, sourcing, pricing, distribution, acquired entity has presence and any other logistics, storage, customer management and sales and operations significant information (in brief) planning. As a newly incorporated company, it has no turnover history for the preceding three financial years. 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