We submit herewith disclosure of change in management due to transfer of Senior Management to wholly Owned Subsidiary w.e.f. October 01, 2026.

September 28, 2026 BSE Limited National Stock Exchange of India Limited 25, P. J. Towers, Exchange Plaza, C-1, Block G, Dalal Street, Bandra — Kurla Complex, Bandra (E) Mumbai – 400 001 Mumbai — 400 051 Scrip Code: 500120 Symbol: DIAMINESQ Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, Pursuant to the Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 ("Listing Regulations"), intimation is hereby given related to change in senior Management due to transfer of Mr. Venkatesan Arumugam, VP Manufacturing and Mr. Harmanpreet Shingh, General Manager - Projects of the Company on roll of Wholly Owned Subsidiary Company w.e.f October 01, 2026. The requisite disclosure as required as per the requirement of Regulation 30 read with clause 7 of Part A of Schedule III of the Listing Regulations, read with SEBI Circular No. SEBI/HO/CFD/CFD-PoD-1/P/CIR/2023/123 dated July 13, 2023 is enclosed herewith as Annexure-A. Kindly take the same on records. Kindly take the above mentioned information on records. Thanking You, Yours Faithfully, For Diamines and Chemicals Limited Hemaxi Pawar Company Secretary Membership No.: A52581 Encl: As above Diamines and Chemicals Limited (CIN No.L24110GJ1976PLC002905) Plot No. 13 P.C.C. Area, P.O. Petrochemicals, Dist. Vadodara 391346, Gujarat (India). T: +91 265 3534200, F: +91 265 2230218 E: info@dacl.co.in, W:dacl.co.in Annexure-A Details of disclosure as required under the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015: Sr. Details of events that Information of such event(s) No need to be provided Mr. Venkatesan Mr. Harmanpreet Singh Arumugam 1. Reason for change viz. Transfer of Mr. Transfer of Mr. appointment, Venkatesan Arumugam as Harmanpreet Singh as resignation, removal, VP-Manufacturing on roll General Manager - Projects death or Otherwise of the Wholly Owned on roll of the Wholly Owned Completion of their Subsidiary Company Subsidiary Company terms; 2. Date of appointment/ Mr. Venkatesan Mr. Harmanpreet Singh will Cessation and terms of Arumugam will be be transferred as General appointment; transferred as VP Manager - Projects to Manufacturing to Wholly Wholly Owned Subsidiary Owned Subsidiary Company w.e.f October 01, Company w.e.f October 2026 01, 2026 3. Brief Profile (in case of Not Applicable Not Applicable appointment); 4. Disclosure of Not Applicable Not Applicable relationships between directors. (in case of Appointment) Diamines and Chemicals Limited (CIN No.L24110GJ1976PLC002905) Plot No. 13 P.C.C. Area, P.O. Petrochemicals, Dist. Vadodara 391346, Gujarat (India). T: +91 265 3534200, F: +91 265 2230218 E: info@dacl.co.in, W:dacl.co.in