Action(s) taken or orders passed

Hindustan Oil Exploration Company Limited ‘Lakshmi Chambers’, 192, St. Mary’s Road, Alwarpet, Chennai - 600 018. INDIA. Phone: 91 (044) 66229000 ● Fax: 91 (044) 66229011 / 66229012 E-mail: contact@hoec.com ● Website: www.hoec.com CIN: L11100GJ1996PLC029880 July 01, 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: Disclosure as per Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) Pursuant to the provisions of Regulation 30 of SEBI Listing Regulations, we hereby submit disclosure regarding the fines imposed by BSE Limited and National Stock Exchange of India Limited (“Stock Exchanges”), for non-submission of the audited financial results for the quarter and year ended March 31, 2026, within the period prescribed under Regulation 33 of SEBI Listing Regulations. The Company shall make the payment of the fines within the timelines prescribed by the Stock Exchanges. The details as required pursuant to Regulation 30 read with Para A of Part A of Schedule III of SEBI Listing Regulations, as amended from time to time read with SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 (“SEBI Master Circular”) are enclosed herewith as Annexure-I We would like to inform that the delay in submission of the audited financial results for the quarter and year ended March 31, 2026 was on account of the changes occurred in the Key Management Personnel, namely the Managing Director and Chief Financial Officer and also in the constitution of the Audit Committee also, a change in the Statutory Auditors, consequent to the mandatory rotation requirement. Accordingly, The Company had intimated to the Stock Exchanges on May 27, 2026 regarding delay in submission of the audited financial results for the quarter and year ended March 31, 2026 as per SEBI Circular no. CIR/CFD/CMD-1/142/2018 dated November 19, 2018 to ensure adequate time for completion of all review and audit processes in view of the above transition. We would further like to inform that the Company has submitted the audited financial results (Standalone and Consolidated) for the quarter and year ended March 31, 2026 to the Stock Exchanges on June 11, 2026 Yours Sincerely, For Hindustan Oil Exploration Company Limited Baroruchi Mishra Managing Director & CEO DIN: 09223144 Encl.: a/a Registered Office: ‘HOEC HOUSE’, Tandalja Road, Off Old Padra Road, Vadodara - 390 020. INDIA. Phone: 91 (0265) 2330766 ● E-mail: contact@hoec.com ● Website: www.hoec.com Continuation Sheet ANNEXURE-I Details under Regulation 30 read with Para A of Part A of Schedule III of the SEBI Listing Regulations read with the SEBI Master Circular. Particulars Information / Remarks Information / Remarks National Stock Exchange of India Name of the Authority BSE Limited (“BSE”) Limited (“NSE”) BSE vide its email dated June 30, NSE vide its email and notice dated 2026, has imposed fine of Rs. June 30, 2026, has imposed fine of 59,000/- (basic fine plus GST) on the Rs. 59,000/- (basic fine plus GST) on Company for non-submission of the the Company for non-submission of audited financial results for the the audited financial results for the Nature and details of quarter and year ended March 31, quarter and year ended March 31, the action(s) taken or 2026 within the period prescribed 2026 within the period prescribed order(s) passed. under Regulation 33 of the SEBI under Regulation 33 of the SEBI Listing Regulations. The Company Listing Regulations. The Company shall make the payment of the fine shall make the payment of the fine within the timelines prescribed by within the timelines prescribed by BSE NSE Date of receipt of direction or order, including any ad- interim or interim June 30, 2026 June 30, 2026 orders, or any other communication from the authority Details of the violation(s) / Non-submission of the audited financial results for the quarter and year contravention(s) ended March 31, 2026, within the period prescribed under Regulation 33 of committed or alleged the SEBI Listing Regulations. to be committed. The Company has submitted the audited financial results (Standalone and Consolidated) for the quarter and year ended March 31, Impact on financial, 2026 to the Stock Exchanges on June 11, 2026. operation or other activities of the listed The said delay in submission of audited financial results was on account of entity, quantifiable in the changes occurred in the Key Managerial Personnel and rotation of monetary terms to the Statutory Auditors of the Company. extent possible. There is no impact on the financial, operation or other activities of the Company due to levy of the said fine.