Disclosure under Regulation 30- Notice of Penalty received from NSE and BSE for the quarter ended 30th June, 2026.

01680 MANGALORE REFINERY AND PETROCHEMICALS LIMITED (ऑयल wsARs कॉरपोरेशन लिमिटेड की सहायक कंपनी A SUBSIDIARY OF OIL AND NATURAL GAS CORPORATION LIMITED) .एस.ओ. 9001, 14001 एवं 50001 प्रमाणित कंपनी AN 1SO 9001, 14001 AND 50001 CERTIFIED COMPANY MRPL सीआईएन / CIN : L19200KA1988G01008959 , Website = www.mrpl.co.in 26/08/2026 | The Assistant General Manager, The Compliance & Listing Department Listing Compliance, BSE Limited National Stock Exchange of India Limited Scrip Code: 500109 Symbol: MRPL, Series: EQ, ISIN: INE103A01014 ISIN: INE103A01014 Scrip Code (Debenture): 959162, Debt Security: INE103A08019, INE103A08035, 959250, 973692 INE103A08050 Dear Sir/Madam, Subject: Disclosure under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 We write to inform that the Company has received Notices from BSE Limited (BSE) and National Stock Exchange of India Limited (NSE) for non-compliance of provisions of Regulation 17(1), 17(2A), 18(1), 19, 20 and 21(2) of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 w.r.t composition of the Board and Sub-committees for the quarter ended June 30, 2026 and consequent levy of fine from the Stock Exchanges as detailed below: | Period of Non-compliance _ | For the Quarter June 30,2026 ] 8.1414],19,540 each from BSE and NSE | Amount of Fine (including GST @18%) In response to the above, the Company has already represented to the Stock Exchanges for considering the waiver of fine, since MRPL being a Central Public Sector Enterprise (CPSE), the nomination of Directors on the Board of the Company is made by the Administrative Ministry, i.e., Ministry of Petroleum and Natural Gas (MoP&NG), Government of India (GOI). You are requested to take the above information on record. Thanking you. Yours Sincerely, For Mangalore Refinery and Petrochemicals Limited Aiz— Premachandra Rao G Company Secretary kyoh . : investor@mrpl.co.in Read. Office: Kuthethoor P.O. Via Katipalla, Manaaluru - 575 030 (India)