Intimation regarding Recommencement of Operations by adhering to certain conditions

September 26, 2026 BSE Limited National Stock Exchange of India Department of Corporate Services Limited Phiroze Jeejeebhoy Towers Exchange Plaza, 5th Floor Dalal Street Plot No. C/1G, Block Mumbai - 400 001 Bandra-Kurla Complex, Bandra (East) Scrip Code: 543336 Mumbai - 400 051 Scrip Symbol: CHEMPLASTS Dear Sir/Madam, Sub: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Update on Disruption of operation – Provisional Revocation of Prohibition Order issued by Authorities Ref: i) Intimation dated July 18, 2026 regarding the disruption of operation at one of the Company’s plants namely Ethylene-Di-Chloride (EDC) manufacturing plant at Karaikal - Puducherry ii) Intimation dated July 20, 2026 regarding prohibition order issued by the Inspector of Factories, Puducherry iii) Intimation dated July 23, 2026 regarding Directions issued by the Puducherry Pollution Control Committee Further to the above intimations, upon satisfactory implementation of all necessary corrective measures to restore operations at the EDC plant, the Company has received the provisional revocation of the Prohibition Order issued by the Inspector of Factories, Puducherry and Puducherry Pollution Control Committee (PPCC), Puducherry in connection with the incident, to facilitate the recommencement of operations by adhering to certain conditions. Accordingly, the EDC plant re-commenced the operations today. The recommencement of operations will be reviewed by the PPCC before issuing the final revocation order. Date & Time of occurrence of the information: September 25, 2026 at & 12.54 PM (IST). The details required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, read with Para B(6) of Part A of Schedule III thereof and SEBI Master Circular No. HO/49/14/14(7)2025-CFD- POD2/I/3762/2026 dated January 30, 2026 is enclosed as Annexure – A. This is for your information and record. Thanking you, Yours faithfully, For CHEMPLAST SANMAR LIMITED P SRINIVASAN Company Secretary & Compliance Officer Membership No. ACS 10129 Annexure- A Details under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, read with Para B(6) of Part A of Schedule III thereof and SEBI Master Circular No. HO/49/14/14(7)2025-CFD- POD2/I/3762/2026 dated January 30, 2026 Regularly, till complete normalcy is restored: S. No Requirements Particulars a) Insurance amount claimed and Insurance claim has been intimated, realized by the listed entity for and the loss assessment is under the loss/damage; progress. b) The actual amount of damage The Plant & Machinery damage is caused due to the natural estimated to be Rs. 5 Crores calamity or other force majeure events c) Details of steps taken to restore A detailed Root Cause Analysis (RCA) normalcy and HAZOP study were carried out to identify the causes of the incident and to determine the necessary corrective and preventive measures. Based on the recommendations arising from this study, the Company has carried out the corrective and preventive measures. d) The impact of the natural We will quantify the impact and calamity/other force majeure present when the final revocation order events on production or is received from the concerned service, financials of the entity. authorities.