General Updates

संदभ/(cid:91) Ref. : NBC/S/4.5 & 4.5(A)/2026/1175 िदनांक/Dated:07.08.2026 To, To, (cid:366)बंधक/The Manager (cid:366)बंधक/The Manager Phiroj Jeejeebhoy Towers, National Stock Exchange of India Ltd., दलाल (cid:720)(cid:332)ीट/Dalal Street, ए(cid:411)च(cid:336)ज (cid:600)ाजा, बां(cid:363)ा-कु ला(cid:330) क(cid:817)(cid:600)े(cid:411), मु(cid:638)ई/MUMBAI- 400 001 Exchange Plaza, Bandra-Kurla Complex, (cid:304)(cid:716)प कोड/Scrip Code: 532234 बां(cid:363)ा ई(cid:720)/Bandra East, मु(cid:638)ई/ MUMBAI-400 051 (cid:366)तीक/Symbol: NATIONALUM िवषय/ िव(cid:517)ीय वष(cid:330) 2025-26 के िलए (cid:681)ावसाियक उ(cid:517)रदािय(cid:533) और (cid:304)(cid:830)थरता (cid:303)रपोट(cid:330)। Sub: Business Responsibility and Sustainability Report for the financial year 2025-26. महोदय/Dear Sir, Pursuant to Regulation 34(2)(f) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, enclosed please find the Business Responsibility and Sustainability Report for the financial year 2025-26. The said report also forms part of the Annual Report for the financial year 2025-26, submitted to the Stock Exchanges vide our letter dated 07.08.2026. This is for your information and record/ आपकी जानकारी और िअभलेख हेतु I Thanking you/ ध(cid:586)वाद भवदीय/Yours faithfully, For National Aluminium Co. Ltd. (बी. के . सा(cid:353))/(B. K. Sahu) Company Secretary & Compliance Officer ACS: 9953 Encl.: As above National Aluminium Company Limited (A Government of India Enterprise) REGD. & CORPORATE OFFICE Nalco Bhawan, Nayapalli, Bhubaneswar–751013,India CIN # L27203OR1981GOI000920 Tel.:0674-2301988-999, Ext.:2265, 2266, 2267, 2585, 2587, E-mail:company_secretary@nalcoindia.co.in,Website:www.nalcoindia.com