Intimation of closure of trading window

Ref.: SEC/1087/2026-27 September 23, 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, Mumbai - 400 001. Mumbai - 400 051. Maharashtra, India. Maharashtra, India. Scrip Code: 500470 Symbol: TATASTEEL Dear Madam, Sirs, Sub: Intimation of closure of trading window Pursuant to the Code of Conduct for Prevention of Insider Trading as adopted by Tata Steel Limited (‘Company’), the Trading Window for dealing in the Company's Securities will remain closed from Thursday, September 24, 2026. The closure is in connection with the finalization of financial results of the Company for the quarter and half year ending September 30, 2026. The Trading Window will open 48 hours after the said financial results are declared to the Stock Exchanges. This is for your information and records. Yours faithfully, Tata Steel Limited Parvatheesam Kanchinadham Company Secretary and Chief Legal Officer