Updates

GSPL TRANSMISSION LIMITED Regd. Office: GTL Bhavan, E-18, GIDC Electronics Estate, Nr. K-7 Circle, Sector-26, Gandhinagar - 382028, Gujarat, India Tel : +91-79-23268500/600 Ref: GTL/S&L/2026-27 Website: www.gspltrans.com Date: 30 September, 2026 To To The Manager (Listing) The Manager (Listing) The BSE Limited, The National Stock Exchange of India Ltd. Phiroze Jeejeebhoy Towers, "Exchange~ Plaza", Bandra-Kurla Dalal Street, Mumbai - 400 001 Complex, Bandra (E), Mumbai - 400 051 Scrip Code: 544801 Company Symbol: GSPLTRANS Dear Sir/ Madam, Sub: Disclosure under Regulation 30(5) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Respected Sir/ Madam, Pursuant to Regulation 30(5) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 ("Listing Regulations") and in terms of the Policy on Determination of Materiality of Events or Information of the Company, please find below the details of authorised persons for the purpose of determining the materiality of an event or information and for the purpose of making disclosure to the stock exchange(s): Sr.No. Designation Contact Details 1 Company Secretary +91-79-23268500/ 600 2 Chief Financial officer +91-79-23268500/600 3 Vice Chairperson +91-79-23268500/ 600 We request you to kindly take the above on record. Thanking you, Yours faithfully, For GSPL Transmission Limited, Rajeshwari Sharma Company Secretary CIN: U49300GJ2024SGC153672