General Updates

HZL/2026-27/SECY/62 July 24, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, 5th Floor Plot No., C/l, G Block Dalal Street, Fort Bandra-Kurla Complex, Bandra (East), Mumbai – 400 001 Mumbai – 400 051 Kind Attn: General Manager – Department Kind Attn: Head Listing & Corporate of Corporate Services Communication Scrip Code: 500188 Trading Symbol: “HINDZINC” Dear Sir/Ma’am, Sub: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 and with reference to our earlier intimation vide letter no. HZL/2026-27/SECY/20 dated May 01, 2026, we hereby inform that the Audit and Risk Management Committee (“Committee”) and Board of Directors (“Board”) of Hindustan Zinc Limited, at its meeting held today, i.e. July 24, 2026, considered and noted the administrative warning letter issued by the Securities and Exchange Board of India (“SEBI”) vide letter no. HO/(163)2026- CFIDSEC2 dated April 30, 2026. The said letter was placed before the Committee and the Board in accordance with SEBI’s directions. The Committee and the Board were apprised of the background and circumstances relating to the observations made by SEBI. Upon review, the committee and the Board noted that the identified non-compliances were inadvertent in nature and reaffirmed the Company’s commitment to maintaining the highest standards of corporate governance and regulatory compliance. The Committee and the Board further reviewed the corrective measures undertaken by the Company and expressed its satisfaction with the actions taken to address the observations contained in SEBI’s letter. The meeting of the Board of Directors of the Company commenced at 12:00 Noon and concluded at 02:05 p.m. IST. We request you to kindly take the above information on record. Thanking You. Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer Sensitivity: Public (C4)