We would like to inform you that as per the Company''s Code of Conduct formulated pursuant to SEBI (Prohibition of Insider Trading) Regulations, 2015, the trading Window for trading in the Securities of the Company will be closed for all the Designed Persons of the Company from Thursday, October 01, 2026 and would remain closed till the conclusion of the 48 hours post the board meeting, the date of which shall be intimated in due course.

September 28, 2026 BSE Limited, National Stock Exchange of India Ltd. Listing Department, The Listing Department Phirozejeebhoy Towers, Exchange Plaza Dalal Street- Fort, Bandra-Kurla Complex, Bandra (E) Mumbai- 400 001 Mumbai-400 051 Scrip Code - 532904 Scrip Code - SUPREMEINF Sub: Notice of Trading Window Closure for the Quarter and half year ended September 30, 2026. Dear Madam/Sir, We would like to inform you that as per the Company’s Code of Conduct formulated pursuant to SEBI (Prohibition of Insider Trading) Regulations, 2015, the Trading Window for trading in the Securities of the Company will be closed for all Designated Persons of the Company from Thursday, October 01, 2026 and would remain closed till the conclusion of the 48 hours post the board meeting, the date of which shall be intimated in due course. Accordingly, all Designated Persons of the Company have been advised not to trade in the securities of the Company during the aforesaid period of Closure of Trading Window. Further, the date of Board Meeting for consideration of the Unaudited Financial Results of the Company for the Quarter & half year ended September 30, 2026 will be intimated in due course. Request you to take the same on record. Thanking You, For SUPREME INFRASTRUCTURE INDIA LIMITED Sandeep Sauba Lengare Company Secretary & Compliance Officer M. No.- A51961 SUPREME INFRASTRUCTURE INDIA LIMITED Supreme House, Plot No.94/C, Pratap Gad, I.I.T. Main Gate, Powai, Mumbai – 400 076 Tel: + 91 22 6128 9700, Mob-+ 91 8425833332 Fax: + 91 22 6128 9711, Website: www.supremeinfra.com CIN: L74999MH1983PLC029752