The Trading window for dealing in the securities of the company will remain closed from 1st October 2026 till 48 hours after the announcement of standalone Un-audited Financial results for the quarter ending on September 30th 2026

Hindustan September 26, 2026 BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, . Mumbai- 400 001. BSE Scrip Code: 532041 Dear Sir/ Madam, Subject: - Intimation of closure of Trading Window This is to inform that pursuant to the SEBI (Prohibition of Insider Trading) Regulations, 2015 read with the Company's Code of Conduct for regulating, monitoring, and reporting trading by Insiders and Code of Practices and Procedures for fair disclosure of Unpublished Price Sensitive Information, the Trading Window for dealing in the securities of the Company will remain closed from October 01, 2026 till 48 hours after the announcement of Standalone Un- Audited Financial results for the Quarter ending on September 30, 2026 for all designated persons, their immediate relatives and all the connected persons covered under the said Code. Further, pursuant to SEBI Circular SEBI/HO/ISD/ISD-PoD-2/P/CIR/2023/124 dated July 19, 2023, the Company has ensured freezing the PAN of all the Designated Persons (“DPs”) and their immediate relatives during the period of trading window closure. The date of Board Meeting for declaration of the Standalone Un-Audited Financial results for the Quarter ending on September 30, 2026 will be intimated in due course. Kindly take the same on your records. Regards, b For Hindustan Bio Sciences Limits Venkata Rama Mohan Raju Jampana === Chairman & Managing Director DIN: 00060800 HINDUSTAN BIOSCIENCES LTD. +91 40 23555161 / 23555181 #31, Sagar Society, Road No. 2 pharma.hindustanbio@gmail.com Banjara Hills, Hyderabad - 500 034, INDIA. www.hindustan.bio CIN : L26942TG1991PLC0O13564