Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015

October 6, 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: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (‘SEBI Listing Regulations’) Further to our letter dated May 26, 2026, informing the exchanges on the order of the Hon’ble High Court of Gujarat in Writ Petition No. 26530 filed by the Company for the pre-existing rights of the Company over the land on which legacy open wastewater channels were running into the sea at Mithapur, Gujarat, the Company is providing an update as mentioned hereunder. The Hon’ble Supreme Court, vide its Order dated October 5, 2026, has restrained the Government of Gujarat and others from taking any coercive action against the Company with respect to this case and has issued a notice to the Government of Gujarat calling for its response. We request you to kindly take the above information on record. Yours faithfully, For Tata Chemicals Limited Jeraz E. Mahernosh Company Secretary (FCS 7008)