Annual Report for FY 2025-26 to shareholders whose email IDs are not registered.

संदभ(cid:330)/Ref. : NBC/S/4.5 & 4.5(A)/2026/1178 िदनांक/Dated: 10.08.2026 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 Sub: Annual Report for FY 2025-26 to shareholders whose email IDs are not registered. In compliance with provisions of Regulation 36(1)(b) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we forward herewith a copy of the letter being sent to those shareholder(s) whose email address(es) were not registered with the Registrar and Share Transfer Agent(s) of the Company (RTA) / Depository Participant(s) providing the web-link, including the exact path, where complete details of the Annual Report for the FY 2025- 26 is available. आपकी जानकारी और अिभलेख हेतु/This is for your information and record. ध(cid:586)वाद/Thanking you. 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