Please find enclosed herewith intimation for closure of Trading window for the 2nd Quarter and half year ending on September 30, 2026

GPT Infraprojects Limited Regd. Office: GPT Centre, JC-25, Sector III, Salt Lake, Kolkata – 700 106, India CIN: L20103WB1980PLC032872 Phone: +91-33-4050-7000, Email: info@gptgroup.co.in, Visit us: www.gptgroup.co.in GPTINFRA/CS/SE/2026-27 September 28, 2026 The Department of Corporate Services, National Stock Exchange of India Limited, BSE Limited, Exchange Plaza, Plot no. C/1, G Block Phiroze Jeejeebhoy Towers, Dalal Street Bandra-Kurla Complex, Bandra (E), Mumbai – 400001 Mumbai - 400 051 Scrip Code: 533761 Scrip Symbol: GPTINFRA ISIN: INE390G01014 Dear Sir/Madam, Subject: Intimation of Closure of Trading Window Pursuant to the SEBI (Prohibition of Insider Trading) Regulations, 2015 (as amended) and the Company’s Code of Conduct to regulate, monitor and report trading by designated persons, the trading window for dealing in the securities of the Company by the Designated Persons and their immediate relatives shall remain closed from Thursday, October 01, 2026 till 48 (forty-eight) hours after declaration of the Un-audited Financial Results of the Company for the 2nd quarter and half year ending on September 30, 2026. The date of the Board meeting of the Company for consideration and approval of the Un- audited Financial Results for the 2nd quarter and half year ending on September 30, 2026 will be intimated in due course. Accordingly, all the Designated Persons of the Company and their immediate relatives are advised not to trade in the securities of the Company during the aforesaid trading window closure period. The aforesaid information is also available on the website of the Company www.gptinfra.in. Kindly take the aforesaid information on record and oblige. Thanking You, Yours Sincerely, For GPT Infraprojects Limited Sonam Lakhotia Company Secretary & Compliance Officer Mem No.: A41358