Commencement of commercial production/operations

Ref No. GIL/CFD/SEC/27/114/SE 21st October 2026 BSE Limited National Stock Exchange of India Limited Scrip Code: 500300 Symbol: GRASIM Dear Sir/Madam, Sub: Commencement of commercial production of EPICHLOROHYDRIN (ECH) Plant at Vilayat, Gujarat Ref: 1. Regulation 30 and other applicable provisions of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015; 2. SEBI Master Circular No. SEBI/HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated 30th January 2026 This is to inform that the Company has commenced commercial production at its Epichlorohydrin (ECH) Manufacturing Plant located at Vilayat, Gujarat, with effect from today, i.e. 21st October 2026. The Plant has an installed production capacity of 50K Tonnes Per Annum (TPA). The commencement of commercial production marks a significant milestone in the Company's growth strategy and further strengthens its downstream chlor-alkali derivatives portfolio. The above is for your information and records. Thanking you, Yours sincerely, For Grasim Industries Limited Neelabja Chakrabarty Company Secretary and Compliance Officer ACS - 16075 Luxembourg Stock Exchange Citibank N.A. Citibank N.A. 35A Boulevard Joseph II Depositary Receipt Services Custodial Services FIFC, L-1840 Luxembourg 388 Greenwich Street, 11th Floor, C-54 & 55, 26th Floor, New York, G Block, Bandra (East), NY 10013 Mumbai 400051 Grasim Industries Limited Aditya Birla Centre, ‘A’ Wing, 2nd Floor, S.K. Ahire Marg, Worli, Mumbai 400 030, India T: +91 22 6652 5000 / 2499 5000 | F: +91 22 6652 5114 / 2499 5114 E: grasim.secretarial@adityabirla.com | W: www.grasim.com | CIN: L17124MP1947PLC000410 Regd. Office : P.O. Birlagram, Nagda – 456 331 (M.P.)