Please refer the enclosed file

HZL/2026-27/SECY/79 September 03, 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/Madam, Sub: Intimation under the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (SEBI Listing Regulations)-ESG Rating(s) Pursuant to Regulation 30 of the SEBI Listing Regulations read with the relevant SEBI Circulars issued in this regard, we wish to inform you that NSE Sustainability Ratings and Analytics Limited (“NSE Sustainability”), a subsidiary of NSE Indices Limited and a group company of National Stock Exchange of India Limited, a registered ESG Rating Provider has assigned overall ESG rating of “65” to the Company. The information was received via email from BSE on September 03, 2026, at 10:40 AM. Please note that the Company has not engaged NSE Sustainability for ESG Rating. NSE Sustainability has independently prepared the report based on data pertaining to the Company available in public domain. Kindly take the above information on record. Thanking You. Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer