General Updates

September 9, 2026 The General Manager Corporate The Manager, Listing Department National Relations Department BSE Stock Exchange of India Limited Exchange Limited Plaza Phiroze Jeejeebhoy Towers Dalal Bandra-Kurla Complex Street Bandra (E) Mumbai 400 001 Mumbai 400 051 Scrip Code: 500770 Symbol: TATACHEM Dear Sirs, Sub: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 for Update on Notice issued to Tata Chemicals Magadi Limited In continuation to our disclosure dated July 29, 2026, under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (‘SEBI Listing Regulations’) on the Notice from the Ministry of Mining, Blue Economy and Maritime Affairs, Kenya dated July 28, 2026 to Tata Chemicals Magadi Limited (TCML), the Kenyan subsidiary of Tata Chemicals Limited, the Company is providing a status update on the said matter as mentioned hereunder. The Cabinet Secretary, Ministry of Mining, Blue Economy and Maritime Affairs, met the executives of TCML on September 8, 2026, and had a fruitful engagement regarding the matters raised by the Ministry. To facilitate a comprehensive and timely resolution of the matters, it was agreed to establish a high-level technical committee. The Committee will be led by the Principal Secretary for Mining on behalf of the Ministry and the Chief Executive Officer of TCML on its behalf. The Committee will undertake a detailed technical review of all matters, prepare and submit a report to the office of the Cabinet Secretary for consideration and further direction. This is also to establish a sustainable framework that promotes responsible mining, value addition, community development and mutually beneficial partnerships. We request you to kindly take the above information on record. Yours faithfully, For Tata Chemicals Limited Jeraz E. Mahernosh Company Secretary (FCS 7008)