As per Attachment

Date: 25th September, 2026 BSE Limited Corporate Relationship Department Phiroze Jeejeebhoy Tower Dalal Street, Fort, Mumbai – 400001 Ref No.: Stock Code -513575 Subject: Intimation of Closure of Trading Window for the quarter ending on 30th September, 2026. Dear Sir/Ma’am, Pursuant to the SEBI (Prohibition of Insider Trading) Regulations, 2015 read with amendments thereto, we hereby inform that the trading window for dealing in securities of the company shall remain closed for all Directors, KMPs, Designated Employees, Connected Persons and their immediate relatives as defined in the Regulations and Code of Conduct with effect from Thursday, 01st October, 2026 and will continue to remain closed till completion of 48 (Forty Eight) hours after the declaration or announcement of Un-audited Standalone Financial Results of the Company for the quarter ending on 30th September, 2026. All Designated Persons are directed to not trade in the shares of the Company during the aforesaid period of closure of trading window and the Company has already communicated to the Designated Persons in accordance with Company’s Code to regulate, monitor and report trading by insiders. The date of Board Meeting to consider and approve the Un-audited Standalone Financial Results of the Company for the quarter ending on 30th September, 2026 shall be communicated in due course of time. THANKING YOU, YOURS FAITHFULLY, FOR STERLING POWERGENSYS LIMITED SANKARAN VENKATA SUBRAMANIAN MANAGING DIRECTOR DIN: 00107561