Trading Window

Date: September 26, 2026 To, To, National Stock Exchange of India Limited BSE Limited Exchange Plaza, Plot No. C/1, G-Block Bandra Kurla Phiroze Jeejeebhoy Towers Dalal Street Mumbai – Complex, Bandra (E) Mumbai – 400 051 400001 Trading Symbol: CEINSYS Scrip Code: 538734 Sub: Intimation of Closure of Trading Window Dear Sir/Madam, This is to inform you that as per the Company's Code of Conduct & Fair Disclosure for Prevention of Insider Trading under the SEBI (Prohibition of Insider Trading) Regulations, 2015, read with amendments thereto, the trading window for dealing in shares of the Company by its Designated Persons and their immediate relatives shall remain closed from Thursday, October 1, 2026 until 48 hours after the declaration of Financial Results for the Quarter and half year ended September 30, 2026. This is for your information and records. Kindly acknowledge the receipt of same. Thanking you. Yours faithfully, For Ceinsys Tech Limited Pooja Karande Company Secretary & Compliance Officer (M. No. A54401) Ceinsys Tech Ltd. Registered Office: 10/5, IT Park, Nagpur-440022. Maharashtra, India I CIN: L72300MH1998PLC114790 info@cstech.ai I EPABX: +91 712 2249033/358/930 Fax: +91 712 2249605 www.cstech.ai