Acquisition

Ref.: SEC/947/2026-27 August 27, 2026 The Secretary, Listing Department The Manager, Listing Department BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, 5th Floor, Plot No. C/1, Dalal Street, G Block, Bandra-Kurla Complex, Bandra (E), Mumbai - 400 001. Mumbai - 400 051. Maharashtra, India. Maharashtra, India. Scrip Code: 500470 Symbol: TATASTEEL Dear Madam, Sirs, Sub: Acquisition of equity stake in T Steel Holdings Pte. Ltd This is further to our earlier disclosures in relation to the above-mentioned subject, the latest being June 24, 2026. The Board of Directors of Tata Steel Limited (‘Company’) at its meeting held on March 17, 2026, had inter alia approved the infusion of additional funds up to USD 2 Billion (~₹18,488.10 crore), enhancing the aggregate investment limit up to USD 26.21 Billion, by way of subscription to equity shares of T Steel Holdings Pte. Ltd (‘TSHP’), a wholly owned foreign subsidiary of the Company, in one or more tranches. In this connection, we wish to inform you that, the Company has today i.e., on August 27, 2026, acquired 162,03,70,371 equity shares of face value USD 0.0864 each aggregating to USD 140 million (₹1,340.16 crore*) in TSHP. Post this acquisition, TSHP will continue to be a wholly owned subsidiary of the Company. This disclosure is being made in compliance with Regulation 30 and 51 read with Para A of Part A of Schedule III of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended. Yours faithfully, Tata Steel Limited Parvatheesam Kanchinadham Company Secretary and Chief Legal Officer *USD to INR exchange rate has been taken as ₹95.7258 as published by Reserve Bank of India on August 24, 2026.