Monthly Business Updates for the month ended September, 2026.

Date: 10.10.2026 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 September, 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30 of SEBI (Listing Obligation and Disclosure Requirements), Regulations, 2015, and Procedures of Fair Disclosure of Unpublished Price Sensitive Information (UPSI) in terms of Regulation 8 of SEBI (Prohibition of Insider Trading) Regulations, 2015, please find below key business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 September, 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 27.88 ('000 MTs) of volume in September 2026, as compared to 28.34 ('000 MTs) handled in August 2026, reflecting a month-on-month decrease of approximately 1.62%.  The volume handled in September 2026 increased by approximately 31.69% year-on-year, as compared to 21.17 ('000 MTs) handled in September 2025.  The Company continues to witness healthy year-on-year growth in volume handled, supported by its ongoing transportation operations and fleet capacity. ISOCL'S VOLUME HANDLED ('000 MTs) 33.12 29.34 29.17 28.39 27.74 28.34 27.88 26.23 24.64 24.28 23.12 22.06 21.17 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 Apr-26 May-26 Jun-26 Jul-26 Aug-26 Sep-26