Intimation on Closure of Trading Window

To, Date: September 25, 2026 The Manager The Manager, BSE Limited National Stock Exchange of India Limited, P. J. Towers, Dalal Street Exchange Plaza, Bandra Kurla Complex, Mumbai-400001 Bandra (E), Mumbai- 400051. (BSE Scrip Code: 543389) (NSE Symbol: SIGACHI) Dear Sir/Madam, Sub: Closure of Trading Window under SEBI (Prohibition of Insider Trading) Regulations, 2015 This is to inform that pursuant to the Company's Code of Conduct for Prevention of Insider Trading adopted by the Company under SEBI (Prohibition of Insider Trading) Regulations, 2015, the trading window for dealing in the securities of the Company will remain closed for “Designated Persons and their immediate relatives” from Thursday, October 01, 2026 till Forty Eight (48) hours after the dissemination of the unaudited Financial Results (Consolidated and Standalone) of the Company for the quarter ended September 30, 2026. The Board Meeting will be scheduled, inter-alia, to consider and approve the unaudited Financial Results for the quarter ended September 30, 2026. Accordingly, an intimation regarding the notice of Board Meeting shall be sent separately to the Stock Exchanges. Further, the designated persons and their immediate relatives have been intimated not to trade in the securities of the Company during the above said period of closure of trading window. This is for your information and records. Thanking you. Yours Faithfully, For Sigachi Industries Limited Vivek Kumar Company Secretary & Compliance Officer CC: To all designated persons