Closure of Trading Window

CORPORATEOFFICE: R-79/83, LAXMI INSURANCE BUILDING, 5TH FLOOR, SIR P.M.ROAD, MUMBAI 400001. PHONE.: 22660300(5LINES)•FAX:22660298 EMAIL: secretarial@boimi.com WEBSITE: www.pragbosimi.com CIN NO.:L17124AS1987PLC002758 Sept 29th, 2026 To, BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai - 400001. Dear Sir / Madam, Sub: Intimation for Closure of Trading Window. Security Code No. 500192. Pursuant to the provisions of SEBI (Prohibition of Insider Trading) Regulations, 2015, as amended, the Trading Window for dealing in the shares of the Company shall remain closed from Oct 1, 2026 till 48 hours after the declaration of the Un-Audited Financial Results for the Quarter and half year ended 30th Sept, 2026 for Directors, Designated Persons, Designated Employees, Insiders and their Immediate Relatives. The date of Board Meeting of the Company for the consideration and declaration of the Un-Audited Financial Results for the Quarter and half year ended 30th Sept, 2026 will be intimated in due course. Kindly make note of the same. This Notice may kindly be taken as our disclosure as required under the relevant provisions of the Securities and Exchange Board of India (Listing Obligation and Disclosure Requirements) Regulations, 2015. Hope you shall find the same in order and request you to take it on your records. This for the information and records. Thanking You Yours faithfully, For PRAG BOSIMI SYNTHETICS LIMITED Madhu P. Dharewa Company Secretary A31733 REGISTERED OFFICE: HOUSE NO.19, AMBIKAGIRI NAGAR, MILAN PATH, R.G.BARUA ROAD, GUWAHATI-781024, INDIA.