Please refer the enclosed file

~~ vedanta HINDUSTAN ZINC Zinc & Silver of India ~.,. transforming for good HZL/2026-27/SECY/69 August 06, 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: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 In line with the Company’s commitment to transparent communication and stakeholder engagement, please find enclosed “ZINQUEST”, a publication containing key updates and developments pertaining to Hindustan Zinc for the months of June and July 2026. The same is also uploaded on the website of the Company and can be accessed at https://www.hzlindia.com/ This is for your information and records. Thanking You, Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer Encl: As above Hindustan Zinc Limited, Registered Office: Yashad Bhawan, Udaipur-313 004, Rajasthan, INDIA. T. +91 294-6604000-02 www.hzlindia.com hzl.secretarial@vedanta.co.in CIN: L27204RJ1966PLC001208 Sensitivity: Public (C4) 0022 268 KT 260 KT 149 MT $851 per MT Best-ever Refined metal Silver Lowest quarterly first-quarter production, production, Zinc cost of mined metal up 4% YoY flat YoY production* production f13,747 crore f8,074 crore f 5,469 crore f 5,253 crore Silver continues to deliver strong value, Best-ever quarterly Highest ever quarterly Record quarterly Strong free cash flow contributing c.46% revenue from operations, EBITDA, net profit, pre growth CAPEX towards overall up 77% YoY up 109% YoY up 145% YoY profitability. ---..r WHEN / 0033 CORROSION COSTS INDlk/ f14 LAKH CROR--~/. AY EAR, PREVENTION CAN NO LONGER BE AN AFTERTHOUGHT. India loses an estimated f14 lakh crore every year, or 4.3% of GDP, due to corrosion-induced damage to infrastructure and industrial assets. - A Nomura report. A SILENT DRAIN WHERE CORROSION ON OUR GROWTH HURTS THE MOST <t i From power and railways to ports, telecom, highways and buildings, corrosion weakens the very assets that power our progress-leading Power Telecom Railways Infrastructure Industrial to higher maintenance costs, Assets 10.1% 3.8% 2.8% 2.9% safety risks and loss of 4.7% national productivity. Annual impact on sectoral GDP (%) BUILT TO LAST WITH A ZINC GALVANIZATION STRONG SACRIFICIAL LONGER LIFE. PROTECTION SHIELD LOWER COST. Zinc galvanization is one of the most proven and globally trusted ways Prevents rust and Protects steel even if Reduces maintenance to protect steel from rust and corrosion, even in the coating is costs and delivers corrosion-delivering durability the harshest scratched or damaged. lower lifecycle costs. that lasts for decades. environments. PROPAGATING A CORROSION-FREE INDIA RECOGNISED FOR OUR IMPACT Through the 'Zung Ke Khilaaf Zinc' Ill SABRE campaign, Hindustan Zinc continues KALEIDO AWARDS to drive awareness about the impact 1 SOUTH ASIA of corrosion and the importance of ~~ ...(." zinc protection for a stronger, Honoured on prestigious platforms for our safer and more sustainable India. communication excellence and leadership in driving meaningful change. Hindustan Zinc 0044 Extends BIS Certification Hindustan Zinc Limited has officially extended its Bureau of Indian Standards (BIS) license to cover Hindustan Zinc Die-Casting Alloy 5 (HZDA 5), joining HZDA 3 under BIS certification. This certification confirms that HZDA 5 meets recognized standards for quality, safety, reliability, and performance, providing industrial customers with assurance regarding product consistency and dependable performance across applications in automotive, engineering, infrastructure, and other manufacturing sectors. India's First 250 MT Electric Crane Commissioned at Debari Smelter Hindustan Zinc has deployed India's first 250 MT electric crane at its Zinc Smelter Debari in Rajasthan, marking a key step towards low-carbon industrial operations. 0 The hybrid crane can operate on both diesel and electric power, helping reduce operational emissions while supporting heavy-duty lifting requirements . • This initiative strengthens Hindustan Zinc's broader decarbonisation roadmap. Reinforcing our commitment to achieving Net Zero emissions by 2050 or sooner. 0055 Hindustan Zinc has signed a Memorandum of Understanding INDUSTRY FIRST (MoU) with Advantek Associates LLP and Aero Eagle Automobiles Private Limited to explore the adoption of PIONEERING green hydrogen and alternative clean energy solutions across its operations. GREEN HYDROGEN Through this collaboration, Hindustan Zinc is set to pioneer the use of hydrogen fuel for underground mining applications, positioning itself to become the only company to deploy this FOR UNDERGROUND MINING technology in such environments. The collaboration is part of Hindustan Zinc's larger strategy to build future-ready, low-carbon and technology-led mining operations, aligned with its commitment to become Net Zero by 2050 or sooner. HINDUSTAN ZINC ASSIGNED CRISIL ESG RATING 'STRONG' STRONG ESG RATING BY CRISIL ESG RATINGS ESG SCORE Hindustan Zinc has been assigned an independent ESG Score of 62 by CRISIL ESG Ratings, placing the company in the 'Strong' category. THE SCALE OF 0066 TOMORROW'S AMBITIONS DEMANDS PARTNERSHIPS THAT CAN BUILD THEM! SAN Kl \ STRATEGIC CONSTRUCTION PARTNER MEET 2026 At Sankalp - Strategic Construction Partner Meet 2026 Hindustan Zinc brought together 15 of India's leading construction companies to align on the execution of the HZL 2.0 growth vision. =,,;i.~~-::= From developing the world's largest single-location 1.0 MTPA zinc smelter Building a 200 KTPA Expanding mining lead smelter with and milling capacity a 700 TPA silver refinery Delivering world-class Setting up a ~ infrastructure through 1.0 MTPA the highest standards fertilizer plant of safety, quality and execution As we build the next chapter of Hindustan Zinc's growth, strong partnerships will remain the foundation of creating long-term value for industry, communities, and the vision of a Viksit Bharat. INDIA'S MOST ~ vedanta .,... ZINC CITY ~ half marathon HINDUSTAN ZINC Zinc & Silver of India ~ 1 - - ~ ;--:~- foli!rl •:h•e• al~hier you. Run for a stronger tomorrow. ' ,. ....- -... · fi'\ 6TH SEPTEMBER \:=V 2026 fr.i'\ UDAIPUR Scenic Route Finisher Medal Ru n with Purpose . (ZINC CITY) : : .. Along Fateh Sagar for All F1'n1' shers • • • . . Support a Cause i.-..···:~:~ 5K 10K FUN RUN TIMED RUN FFOOLLLLOOWW SSCCAANN TTOO EENNTTEERR TTHHEE WWOORRLLDD OOFF ZZIINNCC NNOOWW!!