Hindustan Oil Exploration Company Ltdhas informed BSE that the meeting of the Board of Directors of the Company is scheduled on 06/11/2026 ,inter alia, to consider and approve unaudited financial results of the Company for the quarter and half year ended September 30, 2026

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 November 2, 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: Notice of the Board Meeting to consider the unaudited financial results for the quarter and half year ended September 30, 2026 We wish to inform you that a Meeting of the Board of Directors of the Company is scheduled to be held on Friday, November 6, 2026, inter alia, to consider the unaudited financial results of the Company for the quarter and half year ended September 30, 2026. We request you to kindly take our aforesaid submissions on record. Thanking you, Yours Sincerely, For Hindustan Oil Exploration Company Limited Baroruchi Mishra Managing Director & CEO DIN: 09223144 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