compliance under Regulation 74(5) od SEBI (DP) Regulation, 2018

CHEMIESYNTH (VAPI) LIMITED Regd office: Plot No. 27, GIDC, Phase-1, Vapi – 396195, Gujarat. CIN: L24110GJ1986PLC008634, GST Reg no: 24AAACC9688H1ZC, Telephone no: 022-21010500, Web: https://www.chemiesynth.com Email id: compliance@chemiesynth.com Date: 03.10.2026 The Bombay Stock Exchange Ltd, 25 Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001. Sub: Certificate under Regulation 74(5) of the SEBI (Depositories and Participants) Regulation, 2018 Ref: Scrip Code: 539230. Dear Sir/Madam, This is to certify that the details of securities dematerialized/rematerialized during the quarter ended September 30, 2026, as required under Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018, have been furnished to all the stock exchanges where the shares of the Company are listed. The letter confirming this from our RTA - M/s. Purva Sharegistry (I) Private Limited dated October 1st 2026 is enclosed for your reference. You are requested to kindly take the same on record. Thanking you, Yours faithfully, For Chemiesynth (Vapi) Limited Pranali Dholabhai Company Secretary & Compliance Officer. Encl.: Certificate as per Reg 74(5) of SEBI (D & P) Regulations, 2018. 01/10/2026 CHEMIESYNTH VAPI LTD - INE829R01018 Dear Sir/Madam. Sub : Confirmation Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 As per Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018, we hereby confirm that security received from the depository participants for dematerialisation during the quarter ended September, 2026, were confirmed (accepted / rejected) to the depositories by us and that securities comprised in the said certificates have been listed on the stock exchanges where the earlier issued securities are listed. We hereby also confirm that the security certificates received for dematerialisation have been confirmed/rejected and the security certificates received were mutilated and cancelled after due verification by the depository participant and the name of the depositories have been substituted in the register of members as the registered owner within the prescribed timelines. We request you to kindly take note of the above in your records. Thanking you, Yours faithfully, For Purva Sharegistry (India) Pvt. Ltd. Ms. Deepali Gaonkar Compliance Officer. CHEMIESYNTH VAPI LTD - INE829R01018 - Details of Share certificates dematerialised from 01/07/2026 to 30/09/2026 FOLIO NAME OF CERTIFICA DIST. DIST. SHARE DEMATERIAL SHAREHOLDER TE NO. NO.(FROM) NO.(TO) S ISED ON NIL NIL NIL NIL NIL NIL NIL