Hindustan Zinc Ltd. — Call Transcript 2026

Apr 21, 2026

HZL/2026-27/SECY/09

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April 21, 2026

BSE Limited Phiroze Jeejeebhoy Towers Dalal Street, Fort Mumbai – 400 001

National Stock Exchange of India Limited Exchange Plaza, 5th Floor Plot No., C/l, G Block Bandra-Kurla Complex, Bandra (East), Mumbai – 400 051

Kind Attn: General Manager – Department of Corporate Services

Kind Attn: Head Listing & Corporate Communication

Scrip Code: 500188

Trading Symbol: “HINDZINC”

Dear Sir/Ma’am,

Sub: Intimation of Earnings Call

Pursuant to Regulation 30 read with Para A of Part A of Schedule III of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we are enclosing herewith the details of the earning call to be held on Friday, April 24, 2026, at 16:00 hours IST for the fourth quarter and year ended March 31, 2026.

This is for your information and records.

Thanking You

Yours faithfully,

For Hindustan Zinc Limited

AASHHIMA Digitally signed by AASHHIMA V KHANNA V KHANNA Date: 2026.04.21 16:40:13 +05'30'

Aashhima V Khanna

Company Secretary & Compliance Officer

Encl: As above

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Hindustan Zinc Limited

Notice of Results for the Fourth Quarter and Full Year Ended March 31, 2026

Udaipur, April 21, 2026: Hindustan Zinc Limited, the world’s largest integrated zinc producer, will announce its results for the fourth quarter and full year ended March 31, 2026, on Friday, April 24, 2026.

The results will also be available on the Company’s website, www.hzlindia.com. The Company will subsequently hold an earnings conference the same day at 16:00 hours IST, where senior management will discuss its results and performance.

Hindustan Zinc 4Q FY2026 Earnings Call on Friday, April 24, 2026, at 16:00 hours (IST)

Conference Dial-In Information:

Express Join via internet registration with no waiting time

Please dial the below number at least 5-10 minutes prior to the conference schedule.

Universal Access +91 22 6280 1340, +91 22 7115 8241 Playback Dial-In Numbers +91 22 7194 5757 April 24 – May 01, 2026 Playback Code: 01679#

For further information, please contact:

Raksha Jain Maitreyee Sankhla Director - Investor Relations Head Corporate Communications raksha.jain@vedanta.co.in maitreyee.sankhla@vedanta.co.in

Rahul Challa Deputy Manager - Investor Relations hzl.ir@vedanta.co.in

About Hindustan Zinc

Hindustan Zinc Limited (BSE: 500188 and NSE: HINDZINC), a Vedanta Group company, is the world’s largest integrated zinc producer and is amongst the top 10 silver producers globally. The company supplies to more than 40 countries and holds a market share of about 74% of the primary zinc market in India. Hindustan Zinc has been recognized as the world’s most sustainable company in the metals and mining category for the third consecutive year by the S&P Global Corporate Sustainability Assessment 2025, reflecting its operational excellence, innovation, and leading ESG practices. The company also became the first Indian company to join the prestigious International Council on Mining & Metals (ICMM) in 2025. The company also launched EcoZen, Asia’s first low carbon ‘green’ zinc brand, produced using renewable energy. Hindustan Zinc is also a certified 3.32 times Water-Positive company and is committed to achieving Net Zero emissions by 2050 or sooner. Transforming the lives of 2.6 million people through its focused social welfare initiatives, Hindustan Zinc is among the Top 10 CSR companies in India. As an energy transition metals company, Hindustan Zinc is pivotal in the journey of sourcing critical metals essential for a sustainable future.

Learn more about Hindustan Zinc on - https://www.hzlindia.com/home/ and follow us on LinkedIn, Twitter, Facebook, and Instagram for more updates.

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