Trading window for dealing with the securities of the Company shall remain closed for all insiders including Designated Persons and their immediate relatives from 1st October, 2026 to the end of 48 hours after the declaration of the unaudited financial results of the Company for the quarter and half year ending 30th September,2026.

No.18(2)/2026/79 29.09.2026 BSE Limited National Stock Exchange of Calcutta Stock Exchange Phiroze Jeejeebhoy India Limited Limited Towers, Dalal Street, Exchange Plaza, C-1, Block G, 7, Lyons Range, Murgighata, Mumbai – 400001. Bandra-Kurla Complex, Dalhousie, Kolkata, Scrip Code: 543768 Bandra (East), Mumbai – West Bengal 700001. 400051 Scrip ID: 74920 Security ID: NSLNISP Dear Sir / Madam, Sub: Intimation of Closure of Trading Window. In pursuance of the SEBI (Prohibition of Insider Trading) Regulations, 2015 and the Company's Internal Code of Conduct for Prevention of Insider Trading, the trading window for dealing with the securities of the Company shall remain closed for all Insiders including Designated Persons and their immediate relatives from 1st October, 2026 to the end of 48 hours after the declaration of the unaudited financial results of the Company for the quarter and half year ending 30th September, 2026. Please take note of the above. Thanking you, Yours faithfully, for NMDC Steel Limited Paraj Kanti Saha Company Secretary & Compliance Officer