Intimation of trading window closure

DUCON INFRATECHNOLOGIES LIMITED [ CIN: L72900MH2009PLC191412] Regd. Office: DUCON House, Plot No. A/4, Road No.1, MIDC, Wagle Industrial Estate, Thane (W) — 400 604. India Tel. : 91-22-41122114, Fax 022 41122115 URL : www.duconinfra.co.in CONSISTENCY IN PERFORMANCE September 22, 2026 Corporate Relationship Department Listing Department BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, C-1 Block G, Dalal Street, Bandra Kurla Complex, Bandra (E), Mumbai- 400001 Mumbai -400 051 Fax No. 022-22723121/3027/2039/2061 Fax No. 022-26598120/38 Security Code: 534674, Security ID : DUCON ||Scrip Symbol: DUCON Dear Sir/Ma’am, Re: ISIN - INE741L01018 Sub: Intimation of Closure of Trading Window This is to inform that pursuant to the SEBI (Prohibition of Insider Trading) Regulations 2015 and the Company's Code of Conduct for Regulating, Monitoring and Reporting of Trading by Insiders, the Trading Window for dealing in the securities of the Company by its Designated Persons will remain closed from Thursday, October 1, 2026. The closure is in connection with the finalization and approval of Un-Audited (Standalone & Consolidated) financial results for quarter & half-year ended September 30, 2026. The trading window shall be opened 48 (Forty-Eight) hours after the said results of the Company are declared and disseminated to the Stock Exchanges. Accordingly, all the Designated Persons, their immediate relatives and other Insiders of the Company are advised not to deal in the Equity Shares of the Company during the aforesaid period. An intimation in this regard has been sent to all the Designated Person(s) of the Company. The date of the Board Meeting for consideration and approval of the Financial Results of the Company for the quarter and half- year ending on September 30, 2026, shall be intimated separately. Request to kindly take the same on record. Thanking you, Yours faithfully, for DUCON INFRATECHNOLOGIES LIMITED GOVIL i ARUN GOVIL Managing Director DIN: 01914619