Please refer the enclosed file.

HZL/2026-27/SECY/58 July 22, 2026 BSE Limited Na�onal 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 the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”) – ESG Ratings Pursuant to Regulation 30 of the Listing Regulations read with the relevant SEBI Circulars issued in this regard, we hereby wish to inform you that Crisil ESG Ratings & Analytics Ltd (“Crisil ESG Ratings”), a SEBI registered ESG Rating Provider, has independently and voluntarily assigned the Company an Environmental, Social & Governance rating as “Crisil ESG 62” under category "Strong". The intimation of the aforesaid rating was received via email from BSE on July 21, 2026 at 08:29 p.m. Please note that the Company has not engaged Crisil ESG Ratings for ESG rating. The report have been prepared independently by them based on publicly available information/disclosure. The ESG rating as published by Crisil ESG Ratings is available at the following link: https://www.crisilesg.com/en/home/esg-ratings.html This is for your information and record. Thanking You. Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer