Change in Management

July 7, 2026 The General Manager The Manager, Listing Department Corporate Relations Department National Stock Exchange of India Limited BSE Limited Exchange Plaza Phiroze Jeejeebhoy Towers Bandra-Kurla Complex Dalal Street Bandra (E) Mumbai 400 001 Mumbai 400 051 Scrip Code: 500770 Symbol: TATACHEM Dear Sirs, Sub: Enhanced role of Senior Management Personnel Pursuant to Regulation 30 read with Schedule III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (‘SEBI Listing Regulations’), we wish to inform that Mr. Rino Raj, Vice President & Site Head - Mithapur and Senior Management Personnel of the Company will also be taking the additional responsibility of all the Company’s plants situated in India. Accordingly, Mr. Rino Raj will be re-designated as Vice President Manufacturing (India). The brief details of the aforesaid change as prescribed under SEBI Listing Regulations read with SEBI Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 is enclosed as an Annexure. We request you to take this on record. Thanking you, Yours faithfully, For Tata Chemicals Limited Jeraz E. Mahernosh Company Secretary (FCS 7008) Encl: as above Annexure Disclosure in terms of Regulation 30 of the SEBI Listing Regulations read with SEBI Master Circular HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 Sr. Particulars Details 1 Reason for change viz. Mr. Rino Raj, Vice President & Site Head - Mithapur and appointment, resignation, Senior Management Personnel of the Company will now removal, death or otherwise also be taking the additional responsibility of all the Company’s plants situated in India and is re-designated as Vice President Manufacturing (India). 2 Date of appointment/ re- July 7, 2026 appointment/ cessation (as applicable) & term of appointment/re-appointment 3 Brief profile (in case of Not Applicable appointment) 4 Disclosure of relationships Not Applicable between Directors (in case of appointment of a director)