Trading Window Closure Period under the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015

INFRASTRUCTURE Ref No: GIL/SE/2026-27/030 Date: September 28, 2026 The Secretary The Secretary BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, 5th Floor 25th Floor, Dalal Street Plot No. C/1, G Block, BKC Fort, Mumbai 400 001 Bandra (East), Mumbai 400 051 Scrip Code: 532775 Trading Symbol: GTLINFRA Dear Sir/Madam, Sub: Trading Window Closure Period under the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015 In terms of the provisions of Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, the Company is required to notify "Trading Window Closure Period" to all its Insiders, as defined under the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015. In this connection and further to BSE Circular No. LIST/COMP/01/2019-20 & NSE letter no. NSE/CML/2019/11 dated April 2, 2019 and Company's internal code of conduct for prevention of insider trading, the Trading Window for deling in securities of the Company will remain closed for Directors/ Officers and designated employees of the Company (including their immediate relatives) from Thursday, October 1, 2026 and open 48 hours after the declaration of the financial results of the Company for the quarter ended September 30, 2026. Thanking You, Yours truly, For GTL Infrastructure Limited Deepak Keluskar Ajit Shanbhag Company Secretary Chief Financial Officer (Note: This letter is submitted electronically with BSE & NSE through their respective web portals.) GTL INFRASTRUCTURE LIMITED Regd Off: 7th Floor, Building No.A, Plot EL-207, MIDC, TTC Industrial Area, Mahape, Navi Mumbai - 400710, Maharashtra, India. Tel: +91-22-6829-3500 Fax: 91-22-6829-3545 www.gtlinfra.com CIN: L74210MH2004PLC144367 Corp Off : 412 Janmabhoomi Chambers, 29 Walchand Hirachand Marg, Ballard Estate, Mumbai, Maharashtra 400 001 India Tel: +91-22-2271-5000 Fax: +91-22-2271-5332