Monthly Business update for the month ended July, 2026.

Date: 11.08.2026 The Manager, Listing Department, BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400001 Scrip Code: 530259 Dear Sir/Ma’am, Sub: Monthly Business Update for the month ended July, 2026. In accordance with Regulation 30 of SEBI (Listing Obligation and Disclosure Requirements), Regulations, 2015, and Procedures of Fair Disclosure of Unpublished Price Sensitive Information (UPSI) in terms of Regulation 8 of SEBI (Prohibition of Insider Trading) Regulations, 2015, please find below key business parameters for the month ended July, 2026. The given information is as per Limited Review by the management. This is for your information and for the information of your members and the public at large. Kindly take the above on record. Thanking You, Yours Faithfully, For Inter State Oil Carrier Limited (Rashmi Sharma) Company Secretary & Compliance Officer Membership No. A34765 Key Highlights of Volume Handled: • Inter State Oil Carrier Limited handled 33.12 ('000 MTs) of volume in July 2026, compared to 29.17 ('000 MTs) handled in June 2026, reflecting an increase of approximately 13.54%. • The volume handled in July 2026 stood at 33.12 ('000 MTs), compared to 23.98 ('000 MTs) in July 2025, reflecting a year-on-year increase of approximately 38.12%. • The volume handled in July 2026 stood at 33.12 ('000 MTs), representing the highest monthly volume recorded during the last twelve months. It surpassed the previous peak monthly volume of 29.34 ('000 MTs) achieved in March 2026 by 3.78 ('000 MTs), reflecting an increase of approximately 12.88%, demonstrating strong growth in volumes. ISOCL'S VOLUME HANDLED ('000 MTs)