Intimation of closure of Trading Window is attached herewith

287/LG/SE/SEP/2026/GBSL September 28, 2026 To, To, National Stock Exchange of India Limited, BSE Limited, Exchange Plaza, Bandra Kurla Complex, Phiroze Jeejeebhoy Towers, Dalal Street, Bandra (E), Mumbai – 400 051 Mumbai – 400 001 Scrip Symbol: GUFICBIO Scrip Code: 509079 Subject: Intimation of closure of Trading Window Dear Sir/Madam, This is to inform that pursuant to the provisions of SEBI (Prohibition of Insider Trading) Regulations, 2015, as amended from time to time and the Company’s Code of Conduct framed under the said provisions, the Trading Window for dealing in securities of the Company shall remain closed for all the Designated Persons and their immediate relatives from Thursday, October 01, 2026 till 48 hours after the declaration of Unaudited Financial Results (Standalone and Consolidated) of the Company for the quarter and half year ended September 30, 2026. The date of meeting of the Board of Directors to consider and approve the Unaudited Financial Results (Standalone and Consolidated) of the Company for the quarter and half year ended September 30, 2026 will be intimated in due course. Kindly take the same on record. Thanking you, Yours faithfully, For Gufic Biosciences Limited Ami Shah Company Secretary & Compliance Officer Membership No. A39579