Analysts/Institutional Investor Meet/Con. Call Updates

HZL/2026-27/SECY/67 July 28, 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: - Earnings call Transcript for the first quarter ended June 30, 2026 Pursuant to Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, please find enclosed herewith the transcript of the earnings call held on Friday, July 24, 2026, with regard to the financial performance of the Company for the first quarter ended June 30, 2026. The same is also made available on the Company’s website at https://www.hzlindia.com/investors/results-and-reports. You are requested to take the above information on record. Thanking You, Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer Enclosed: as above Sensitivity: Public (C4) “Hindustan Zinc Limited Q1 FY27 Earnings Conference Call” July 24, 2026 MANAGEMENT: MR. ARUN MISRA – CHIEF EXECUTIVE OFFICER AND WHOLE-TIME DIRECTOR – HINDUSTAN ZINC LIMITED MR. AMARENDU PRAKASH – CHIEF EXECUTIVE OFFICER, DESIGNATE – HINDUSTAN ZINC LIMITED MR. AMIT GUPTA – CHIEF FINANCIAL OFFICER – HINDUSTAN ZINC LIMITED MS. RAKSHA JAIN – DIRECTOR, INVESTOR RELATIONS – HINDUSTAN ZINC LIMITED Page 1 of 13 Sensitivity: Public (C4) Hindustan Zinc Limited July 24, 2026 Moderator: Ladies and gentlemen, good day, and welcome to the First Quarter FY27 Earnings Conference Call of Hindustan Zinc. As a reminder, all participant lines will be in the listen-only mode and there will be an opportunity for you to ask questions after the presentation concludes. Should you need assistance during this conference, please signal an operator by pressing star then zero on your touchtone phone. Please note that this conference is being recorded. I now hand the conference over to Ms. Raksha Jain, Director of Investor Relations of Hindustan Zinc. Thank you, and over to you, Ms. Jain. Raksha Jain: Thank you, operator, and good evening, ladies and gentlemen. Thank you for joining us today to discuss the first quarter results of FY 2027. In this call, we will refer to our investor presentation available on the company's website. Please note that today's entire discussion will be covered by the safe harbor clause mentioned on Slide 2 of the presentation. Before we go ahead, would like to update everyone that our Board of Directors has appointed Mr. Amarendu Prakash as the CEO and Whole-Time Director of Hindustan Zinc, with effect from 1st August 2026. Mr. Prakash is a steel industry veteran with over 30 years of experience at date. He served as Chairman and Managing Director of SAIL from 2023 to 2026. During his tenure, he spearheaded key initiatives in operational excellence, capacity expansion and digital transformation. Today's call is joined by our CEO, Mr. Arun Misra; CEO designate, Mr. Amarendu Prakash; and our CFO, Mr. Amit Gupta, who will also be interacting with you during the call. As you would have seen from our earlier announcement, Mr. Amit Gupta has recently been appointed as the Chief Financial Officer of Hindustan Zinc. The management will be discussing the operational and financial update for the quarter, followed by a Q&A session. Now I would like to invite Mr. Arun Misra to present the results. Over to you, sir. Arun Misra: Thank you, Raksha. A very good evening to all of you. Thank you for joining us today. We are pleased to begin FY27 with a strong quarter marked by solid operational and financial performance and continued execution of our strategic priorities. Our integrated business model, industry-leading cost competitiveness and disciplined approach continues to differentiate us and position us well for long-term value creation. During the quarter, we also achieved a significant milestone in our diversification journey by securing a mining lease of a rare earth elements and Yttrium block in Gundlupet, Karnataka, further advancing our ambition of becoming a diversified multimetal enterprise and reinforcing our commitment to supporting India's critical mineral mission. On the sustainability front, Hindustan Zinc continues to make strong progress against the performance expectations set by the ICMM. During the quarter following Chanderiya Lead Zinc Smelter, Rampura Agucha Mine became the first mine in India to receive the Zinc Mark certification, underscoring our commitment to responsible resource use and lower environmental impact. Page 2 of 13 Sensitivity: Public (C4) Hindustan Zinc Limited July 24, 2026 Our renewable energy consumption increased to 22%. We deployed India's first 250 metric ton electric crane and strengthened our partnership with the Energy & Resources Institute through our 250-hectare natural forest development project at Chanderiya. We also signed MOUs with Advantek Associates LLP and Aero Eagle Automobile Pvt Ltd to advance the adoption of green hydrogen and other clean energy solutions. I'm pleased to share that these industry-leading sustainability practices have led to Hindustan Zinc's inclusion in the Dow Jones Best-in-Class Emerging Markets Index for the first time, a testament to our unwavering commitment to sustainable value creation, responsible business practices and ESG excellence. Our CSR initiatives continue to create meaningful impact across local communities through focused interventions in nutrition, health care, education and sustainable livelihoods, strengthening community resilience and emanating long-term source value. During the quarter, we added 1,869 Nand Ghars across Rajasthan, taking the cumulative total to over 11,000 Nand Ghars. Moving to the market environment. India continues to remain one of the fastest-growing major economies despite an evolving global backdrop. Manufacturing activity remained in expansion territory during the quarter, supported by resilient domestic demand, sustained government capital expenditure and continued infrastructure investments. Against a backdrop of geopolitical uncertainties and evolving trade dynamics, base metal markets remained relatively resilient during the quarter. Zinc averaged USD3,466 per ton, reaching a high of USD3,625 per ton, while lead averaged USD1,954 per ton. Market fundamentals remained broadly supportive, underpinned by constrained mine supply and steady demand from infrastructure, galvanization and battery applications. Silver prices moderated during the quarter to USD73 per troy ounce compared with the strong levels seen in the previous quarter, reflecting broader macroeconomic and investor positioning factors. Nevertheless, silver fundamentals remain supported by robust industrial demand from solar, electronics and electrification applications alongside continued investment interest. While near-term price movements may remain volatile, the medium-term outlook continues to be constructive, driven by structural demand from the energy transition and relatively constrained global supply growth. Turning to operational performance. We delivered a strong start of the year with the highest- ever first quarter mine metal production of 268,000 tons for the fifth consecutive year, alongside refined metal production of 260,000 tons, which was up 4% year-on-year. This growth was driven by better mine grades and the benefit from the 160,000 tons per annum roaster, which is now taking care of the additional calcine requirement during the maintenance activities. The output was further supported by debottlenecking at Chanderiya and Dariba despite the planned maintenance activities at the lead smelter. Page 3 of 13 Sensitivity: Public (C4) Hindustan Zinc Limited July 24, 2026 On the cost front, despite the volatile ge [Showing first 8,000 characters — download PDF for full document]