Intimation for closure of Trading window

Date: September 25, 2026 Listing/Compliance Department BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street Mumbai- 400001 Scrip Code : 540078 Dear Sir/Madam, Sub: Intimation for Closure of Trading Window We hereby inform that as per the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended, and Companies Code of Conduct on Insider Trading, the trading window for dealing in equity shares of the Company shall remain closed for Insiders, Designated Persons and their immediate relatives of the Company with effect from Thursday October 1, 2026 upto the expiry of 48 hours post the date of declaration of the Unaudited Financial results of the Company for the quarter and half year ended September 30, 2026. It is requested to that the above-mentioned person has to ensure compliance with Securities and Exchange Board of India (Prohibition of Insider Trading), Regulations, 2015 (including amendments thereto) and shall not trade or deal otherwise in the Company’s securities during the above period of trading window closure. This intimation is being made available on the website of the Company https://www.mitsuchem.com/ Kindly take the same on your records. Yours truly, FOR MITSU CHEM PLAST LIMITED Manish Mavji Dedhia Managing Director and CFO DIN: 01552841 Place: Mumbai