Trading Window

Date: 28t September, 2026 To, To, The Listing Department, The Listing Department, National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5*" Floor, 1°t Floor, New Trading Ring, Plot No. C/1, G Block, Rotunda Building, Bandra - Kurla Complex, Phiroze Jeejeebhoy Towers, Bandra (East), Mumbai - 400051 Dalal Street, Mumbai - 400001 NSE Code: GAMMONIND BSE Code: 509550 Dear Sir / Madam, Sub: Closure of Trading Window This is to inform you that pursuant to Clause 4 of Schedule B of SEBI (Prohibition of Insider Trading) Regulations 2015 read with circular nos. NSE/CML/2019/11 and LIST/COMP/01/2019-20 both dated 2" April, 2019 issued by the National Stock Exchange of India Limited and Bombay Stock Exchange Limited respectively, the trading window of the Company shall remain closed with effect from 15t October, 2026 until expiry of 48 hours after the declaration of financial results for the quarter ended 30" September, 2026. Kindly take the same on record. Thanking you, Yours faithfully, For and on behalf of Gammon India Limited . . Digitally signed by ROSh ni SanJay Roshni Sanjay Kapshiwal H Date: 2026.09.28 KapShlwaI 11:53:47 +05'30" Roshni Kapshiwal Company Secretary and Compliance Officer Membership Number: A73894 Date: 28t September, 2026 Place: Mumbai GAMMON INDIA LIMITED Registered Office: Floor 3rd, Plot - 3/8, Hamilton House, J. N. Heredia Marg, Ballard Estate, Mumbai - 400 038. Maharashtra, India; Telephone: +91-22-2270 5562 E-Mail: investors@gammonindia.com Website: www.gammonindia.com CIN: L74999MH1922PLC000997