Please find the enclosed press release.

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 October 16, 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, Sub: Information regarding Contract Win of ₹ 149.5 Crore by WOS of Company In furtherance to our earlier L1 intimation made on October 3, 2026 and in compliance with Regulation 30 read with Part A of Schedule III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 and the Company’s Code of Practices and Procedure for Fair Disclosure of Unpublished Price Sensitive Information, please find enclosed herewith a press release dated October 16, 2026 regarding contract win for your necessary action and circulation. Kindly take the aforesaid information on record and oblige. Thanking you. Yours Sincerely, For GPT Infraprojects Limited Atul Tantia Jt. Managing Director & CFO GPT INFRAPROJECTS LIMITED CIN: L20103WB1980PLC032872 Regd. Office: GPT Centre, JC-25, Sector III, Salt lake, Kolkata - 700 106, West Bengal, India Phone: +91 33 4050 7000, Email: gil.cosec@gptgroup.co.in October 16, 2026 PRESS RELEASE GPTINFRA Bags Order Valued at ₹ 149.50 Crore GPT Infraprojects Limited (GPTINFRA) is pleased to announce that Alcon Builders and Engineers Private Limited, WOS of the Company has received the following contract. a. Name of the entity awarding the order(s)/ : CSTE, Western Railway, Bhavnagar Division contract(s); b. Significant terms and conditions of : Codal life based replacement of existing PI order(s)/contract(s) awarded in brief; stations with EI, MSDAC & in built block working including Signaling & Telecom equipment at 18 stations. Design, Supply, Installation, Programming, Testing and commissioning for Bhavnagar Division of Western Railway c. Whether order(s) / contract(s) have been Domestic entity awarded by domestic/ international entity; d. Nature of order(s) / contract(s); : Signalling works for Railways e. Time period by which the order(s)/contract(s) : 730 Days from Appointed Date is to be executed f. Broad consideration or size of the : ₹ 149.50 Crore including GST (₹ 126.70 order(s)/contract(s); Crore excluding GST) g. Whether the promoter/ promoter group / group : None companies have any interest in the entity that awarded the order(s)/contract(s)? If yes, nature of interest and details thereof; h. Whether the order(s)/contract(s) would fall : No within related party transactions? If yes, whether the same is done at arm’s length About GPT Infraprojects Limited GPT Infraprojects Limited, the flagship company of GPT Group, is a premier infrastructure company based out of Kolkata. GPTINFRA, incorporated in 1980, GPTINFRA is the flagship company of GPT Group, based out of Kolkata. GPTINFRA, a premier infrastructure company, operates through two segments viz. Infrastructure and Sleeper. The Company is an established Railway focused infrastructure player, engaged in the execution of civil and infrastructure projects, especially large bridges and ROBs for Railways and Roads for Government contracts and signalling works for Railways. In Sleeper segment, the company manufactures and supplies concrete sleepers for Railways in India and Africa. Its manufacturing units are located at Panagarh (West Bengal), Ladysmith (South Africa), Tsumeb (Namibia) and Eshiem (Ghana). The Company has strong project execution capabilities, healthy financial base, and enviable growth prospects across all areas of operation. The net outstanding order book for the Company now stands at ₹ 5,538 Crore with total order inflow for Fiscal 2027 of ₹ 1,364 Crore. GPT Infraprojects Limited is listed on National Stock Exchange of India Limited and BSE Limited under Symbol: GPTINFRA, and Scrip Code: 533761, respectively. For more information about the company, please visit http://www.gptinfra.in