Closure of Trading Window

DOC:SEC:1974/2026-27/235 September 25, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor, Plot No. C/1, Phiroze Jeejeebhoy Towers, G- Block, Bandra – Kurla Complex, Dalal Street, Bandra (East), Mumbai – 400 001 Mumbai – 400 051 SCRIP CODE: 500084 SCRIP CODE: CESC Dear Sir/Madam, Sub: Closure of Trading Window Pursuant to the provisions of the Securities & Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015 and Insider Trading Prohibition Code of the Company ('the Code'), the Trading Window for dealing in securities of the Company by all Designated Persons as defined under the Code, shall be closed from Thursday, October 1, 2026 till the expiry of 48 hours after the declaration of the Unaudited Financial Results of the Company for the 2nd quarter and half-year ending on September 30, 2026 in respect of the Financial Year 2026-27. The date of Board Meeting for declaration of the aforesaid Unaudited Financial Results of the Company will be notified to the Stock Exchanges in due course. You are requested to kindly take the aforementioned on record and oblige. Thanking you. Yours faithfully, For CESC Limited Jagdish Patra Company Secretary & Compliance Officer