Change in Management

June 30, 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: Change in 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. Subodh Srivastav, Chief Marketing Officer and Senior Management Personnel of the Company retired w.e.f. close of business hours today i.e., June 30, 2026, on attaining the age of superannuation in line with the Company’s Retirement Policy. 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. Subodh Srivastav retired as the Chief Marketing appointment, resignation, Officer and Senior Management Personnel on June 30, removal, death or otherwise 2026, on attaining the age of superannuation in line with the Company’s Retirement Policy. 2 Date of appointment/re- Close of business hours today i.e. June 30, 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)