with reference to the outcome of board meeting held on 12th August 2026. we hereby submit corrigendum to rectify a typographical error in book closure date and benpose date

CHEMIESYNTH (VAPI) LIMITED Regd office: Plot No. 27, GIDC, Phase-1, Vapi - 396195 CIN: L24110GJ1986PLC008634, GST Reg no: 24AAACC9688H1ZC, Telephone no: 02221010500, Email id: csl@chemiesynth.com Date: 13th August, 2026 The Manager, BSE Limited, Corporate Relationship Department, Phiroze Jeejeebhoy Tower, Dalal Street, Mumbai – 400 001 Scrip Code: 539230 Sub: Corrigendum / Clarification regarding Outcome of Board Meeting held on 12th August, 2026 Ref: Outcome of Board Meeting submitted to BSE on 12th August, 2026 Dear Sir/Madam, This intimation is filed pursuant to Regulation 30 read with Schedule III of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements)Regulations, 2015, regarding the rectification of inadvertent clerical errors in the previously submitted outcome of the Board Meeting. In reference to the Outcome of the Board Meeting submitted by the Company on 12th August, 2026, we would like to inform you that there was an inadvertent clerical error in mentioning the dates of 'Share Transfer Book Closure' and 'Benpose Date'. We hereby request you to note the following revisions: Particulars As per Original Corrected Date Submission To decided dates of 23/09/2025 to 30/09/2025 24/09/2026 to 30/09/2026 closure of Share Transfer (Both days inclusive) Both days inclusive) book for the purpose of 40th Annual General Meeting. To fix Benpose Date for Benpose Date is fixed on Benpose Date is fixed on sending notice of AGM to 29/08/2026 28/08/2026 members. All other contents of the Outcome of the Board Meeting filed on 12th August, 2026 remain unchanged. We regret the inconvenience caused due to this inadvertent error. Kindly take the same on your records. Thanking You, Yours faithfully, Pranali Dholabhai Company Secretary Date: 13.08.2026 Place: Vapi