Intimation of Closure of Trading Window.

CEMANTIC INFRA-TECH LIMITED (Formerly known as Quantum Build-Tech Limited) , L ' : 36AAACQO601L1ZP Registered Office : 8-1-405/A/7, Dream Valley, Near OU Colony, Shaikpet, Hyderabag 500 008. G_STIN Ph : 040-2356 8766, 2356 8990, Website : www.cemanticinfra.com, E-mail : info@cemanticinfra.com, CIN : L72200TG1998PLC030071 30-September-2026 The General Manager Department of Corporate Services, BSE Limited, 25% Floor, Phiroze Jeejeebhoy Towers, Dalal Street, Fort, Mumbai-400001 Re: Intimation of Closure of Trading Window. Ref: Scrip Code: 538596 Dear Sir/Madam, We wish to inform that pursuant to Clause 4 of Schedule B of SEBI (Prohibition of Insider Trading) Regulations, 2015 as amended from time to time and as per the clarification given by BSE Limited vide Circular no. LIST/COMP/01/2019-20 dated 02.04.2019 and SEBI circular no. SEBI/HO/ISD/ISD-PoD-2/P/CIR/2025/55 dated 21.04.2025 and pursuant to the Company’s Code of Conduct for Prohibition of Insider Trading (Code), the Trading Window for dealing in securities of the Company will remain closed from Thursday, 01% October, 2026 till 48 hours after the declaration of the Un-audited Financial Results of the Company for the Quarter and half year ended on 30® September, 2026 for the Designated/ Connected Persons and relatives of Designated/Connected Persons and relatives of Designated / connected persons, as per the Code. Accordingly, all the Designated Persons as per the Company’s amended Code of Conduct for Prohibition of Insider Trading have been intimated not to deal in Equity Shares of the Company during the stated period as per the Code. This is for your information and record. Thanking you, Yours truly, For CEMANTIC INFRA-TECHLTD (Deshna/.zfain) Company Secretary & Compliance Officer