Analysts/Institutional Investor Meet/Con. Call Updates

Hindustan Oil Exploration Company Limited ‘Lakshmi Chambers’, 192, St. Mary’s Road, Alwarpet, Chennai - 600 018. INDIA. : 91 (044) 66229000 ● Fax: 91 (044) 66229011 / 66229012 E-mail: contact@hoec.com ● Website: www.hoec.com CIN: L11100GJ1996PLC029880 August 13, 2026 By Online The Listing Department The Corporate Relationship Department National Stock Exchange of India Ltd., BSE Limited, “Exchange Plaza”, Bandra Kurla Complex, 1st Floor, P. Jeejeebhoy Towers, Bandra (East), Mumbai – 400 051 Dalal Street, Mumbai – 400 001 Stock Code: HINDOILEXP Stock Code: 500186 Dear Sir/Madam, Sub: Earnings Call Q1 FY2026-27 - Audio recording We wish to inform you that pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, the audio recording of the Earnings Call held on August 13, 2026, with respect to the unaudited financial results for the quarter ended June 30, 2026 has been made available on the Company’s website at https://hoec.com/earnings-call/. We request you to kindly take the same on record. Thanking you, Yours Sincerely, For Hindustan Oil Exploration Company Limited G. Josephin Daisy Company Secretary & Compliance Officer Registered Office: ‘HOEC HOUSE’, Tandalja Road, Off Old Padra Road, Vadodara - 390 020. INDIA. : 91 (0265) 2330766 ● E-mail: contact@hoec.com ● Website: www.hoec.com