General Updates

HZL/2026-27/SECY/55 July 10, 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 relevant SEBI Circulars issued in this regard, we hereby wish to inform you that ESG Risk Assessments and Insights Limited, a SEBI registered ESG rating provider (“ESGRisk.ai”), has independently assigned an ESG rating of ‘67’ to the company. The rating was received via email on July 10, 2026, at 4:12 PM. Please note that the Company has not engaged ESGRisk.ai for this assessment. The ratings and reports have been prepared independently by them based on publicly available information. The Rating Rationale is also made available on their website ESGRisk.ai | India's first ESG Rating Company. This is for your information and record. Thanking You. Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer