Action(s) initiated or orders passed

July 20, 2026 BSE Limited National Stock Exchange of India Limited Department of Corporate Services Exchange Plaza, 5th Floor Phiroze Jeejeebhoy Towers Plot No. C/1G, Block Dalal Street Bandra-Kurla Complex, Bandra (East) Mumbai - 400 001 Mumbai - 400 051 Scrip Code: 543336 Scrip Symbol: CHEMPLASTS Dear Sir/Madam, Sub: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Prohibition Order regd. Further to our intimation dated July 18, 2026 regarding a fire incident on July 17, 2026 at one of our plants viz., Ethylene-Di-Chloride (EDC) manufacturing plant of our Karaikal facility - Puducherry, the Inspector of Factories, Puducherry had inspected the said plant and issued an order dated July 19, 2026 prohibiting further usage/operation of EDC Plant and to obtain Revoke order with the approval of the Chief inspector of the Factories, Puducherry after complying all directives issued under the said prohibition order. The Company is undertaking necessary corrective actions and is in the process of submitting a compliance report with action plan for revocation of the said order. The details required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, read with Para 20 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. Date and time of receipt of information by us: July 19, 2026 at 3.00 PM 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 20 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 S. No Requirements Particulars a) Name of the authority Chief inspector of the Factories, Puducherry b) Nature and details of the action(s) taken or Prohibition Order to order(s) passed prohibit further usage/operation of EDC Plant and to obtain Revoke order with the approval of the said authority c) Date of receipt of direction or order, July 19, 2026 including any ad-interim or interim orders, or any other communication from the authority d) Details of the violation(s)/contravention(s) Fire incident at one of our committed or alleged to be committed plants viz., Ethylene-Di- Chloride (EDC) manufacturing plant of our Karaikal facility- Puducherry, as per the intimation to the stock Exchanges dated July 18, 2026. e) impact on financial, operation or other The Company is in the activities of the listed entity, quantifiable process of ascertaining in monetary terms to the extent possible the damage caused.