Please refer the enclosed file

HZL/2026-27/SECY/95 October 17, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, 5th Floor Plot No., C/l, G Dalal Street, Fort Block Bandra-Kurla Complex, Bandra Mumbai – 400 001 (East), 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: Declaration of Voting Results of Postal Ballot and submission of Scrutinizer’s Report pursuant to Regulations 30 and 44 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI LODR Regulations”) This is further to our letter no. HZL/2026-27/SECY/82 dated September 16, 2026, regarding the Postal Ballot Notice seeking approval of the Members of the Company for the following resolutions through remote e-voting only: Sr. No. Particulars Type of resolution(s) 1. To consider and approve the Appointment of Mr. Amarendu Ordinary Prakash (DIN: 08896653) as a Director and Whole-time Director designated as Chief Executive Officer of the Company for a period of 3 years with effect from August 01, 2026. 2. To consider and approve the appointment of Dr. Yogesh Attray Special (DIN: 07654847) as an Independent Director of the Company. The remote e-voting period concluded on Friday, October 16, 2026, at 5:00 p.m. (IST). Mr. Manoj Maheshwari, Practicing Company Secretary (Membership No. FCS 3355; CP No. 1971), appointed as the Scrutinizer for conducting the Postal Ballot process in a fair and transparent manner, submitted his Scrutinizer’s Report dated October 17, 2026. Based on the Scrutinizer’s Report, we hereby inform you that the Members of the Company have duly approved the aforesaid resolutions with the requisite majority. Accordingly, the resolutions are deemed to have been passed on Friday, October 16, 2026, being the last date specified for remote e-voting. In this regard, please find enclosed the following: 1. Voting results pursuant to Regulation 44(3) of the SEBI LODR Regulations and Section 108 of the Companies Act, 2013 read with the Companies (Management and Administration) Rules, 2014; 2. Scrutinizer's Report dated October 17, 2026, on e-voting. Sensitivity: Public (C4) The results along with Scrutinizer's Report are available on the website of the Company at www.hzlindia.com, the website of NSDL at www.evoting.nsdl.com. You are requested to take the same on your record. Thanking You, Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer Enclosed: As above Copy to: National Securities Depository Limited, Trade World, A Wing, 4th Floor, Kamala Mills Compound, Lower Parel, Mumbai – 400013 Central Depository Services (India) Limited Marathon Futurex, A-Wing 25th Floor, N.M. Joshi Marg, Lower Parel, Mumbai - 400013 KFin Technologies Limited Selenium Tower B, Plot No. 31 & 32, Gachibowli, Financial District, Nanakramguda, Hyderabad - 500032 Sensitivity: Public (C4) Home Validate General information about company Scrip code 500188 NSE Symbol HINDZINC MSEI Symbol NA ISIN INE267A01025 Name of the company Hindustan Zinc Limited Type of meeting Postal Ballot Date of the meeting / last day of receipt of 16-10-2026 postal ballot forms (in case of Postal Ballot) Start time of the meeting End time of the meeting Sensitivity: Public (C4) Home Validate Scrutinizer Details Name of the Scrutinizer Mr. Manoj Maheshwari Firms Name V M & Associates Qualification CS Membership Number FCS 3355 Date of Board Meeting in which appointed 15-08-2026 Date of Issuance of Report to the company 17-10-2026 Sensitivity: Public (C4) Home Validate Voting results Record date 11-09-2026 Total number of shareholders on record date 926414 No. of shareholders present in the meeting either in person or through proxy a) Promoters and Promoter group b) Public No. of shareholders attended the meeting through video conferencing a) Promoters and Promoter group b) Public No. of resolution passed in the meeting 2 Disclosure of notes on voting results Add Notes Sensitivity: Public (C4) Home Validate Resolution (1) Resolution required: (Ordinary / Special) Ordinary Whether promoter/promoter group are interested in the agenda/resolution? No To consider and approve the Appointment of Mr. Amarendu Prakash (DIN: 08896653) as a Director Description of resolution considered and Whole-time Director designated as Chief Executive Officer of the Company for a period of 3 years with effect from August 01, 2026 % of Votes polled % of votes in No. of votes No. of votes – in No. of votes – % of Votes against Category Mode of voting No. of shares held on outstanding favour on votes polled favour against on votes polled shares polled (1) (2) (3)=[(2)/(1)]*100 (4) (5) (6)=[(4)/(2)]*100 (7)=[(5)/(2)]*100 E-Voting 2565271353 100.0000 2565271353 0 100.0000 0.0000 Promoter and Poll 2565271353 0 0.0000 0 0 0.0000 0.0000 Promoter Group Postal Ballot (if applicable) 0 0.0000 0 0 0.0000 0.0000 Total 2565271353 2565271353 100.0000 2565271353 0 100.0000 0.0000 E-Voting 271241016 89.4504 260197377 11043639 95.9285 4.0715 Public- Poll 303230699 0 0.0000 0 0 0.0000 0.0000 Institutions Postal Ballot (if applicable) 0 0.0000 0 0 0.0000 0.0000 Total 303230699 271241016 89.4504 260197377 11043639 95.9285 4.0715 E-Voting 1184355765 87.2893 1184308342 47423 99.9960 0.0040 Public- Non Poll 1356816948 0 0.0000 0 0 0.0000 0.0000 Institutions Postal Ballot (if applicable) 0 0.0000 0 0 0.0000 0.0000 Total 1356816948 1184355765 87.2893 1184308342 47423 99.9960 0.0040 Total Total 4225319000 4020868134 95.1613 4009777072 11091062 99.7242 0.2758 Whether resolution is Pass or Not. Yes Disclosure of notes on resolution Add Notes * this fields are optional Details of Invalid Votes Category No. of Votes Promoter and Promoter Group Public Insitutions Public - Non Insitutions # Sensitivity: Public (C4) Home Validate Resolution (2) Resolution required: (Ordinary / Special) Special Whether promoter/promoter group are interested in the agenda/resolution? No To consider and approve the appointment of Dr. Yogesh Attray (DIN: 07654847) as an Description of resolution considered Independent Director of the Company. % of Votes polled % of votes in No. of votes No. of votes – in No. of votes – % of Votes against Category Mode of voting No. of shares held on outstanding favour on votes polled favour against on votes polled shares polled (1) (2) (3)=[(2)/(1)]*100 (4) (5) (6)=[(4)/(2)]*100 (7)=[(5)/(2)]*100 E-Voting 2565271353 100.0000 2565271353 0 100.0000 0.0000 Promoter and Poll 2565271353 0 0.0000 0 0 0.0000 0.0000 Promoter Group Postal Ballot (if applicable) 0 0.0000 0 0 0.0000 0.0000 Total 2565271353 2565271353 100.0000 2565271353 0 100.0000 0.0000 E-Voting 271241016 89.4504 219660961 51580055 80.9837 19.0163 Public- Poll 303230699 0 0.0000 0 0 0.0000 0.0000 Institutions Postal Ballot (if applicable) 0 0.0000 0 0 0.0000 0.0000 Total 303230699 271241016 89.4504 219660961 51580055 80.9837 19.0163 E-Voting 1184355903 87.2893 1184293623 62280 99.9947 0.0053 Public- Non Poll 1356816948 0 0.0000 0 0 0.0000 0.0000 Institutions Postal Ballot (if applicable) 0 0.0000 0 0 0.0000 0.0000 Total 1356816948 1184355903 87.2893 1184293623 62280 99.9947 0.0053 Total Total 4225319000 4020868272 95.1613 3969225937 51642335 98.7156 1.2844 Whether resolution is Pass or Not. Yes Disclosure of notes on resolution Add Notes * this fields are optional Details of Invalid Votes Category No. of Votes Promoter and Promoter Group Public Insitutions Public - Non Insitutions # Sensitivity: Public (C4) 403, ROYAL WORLD SANSAR CHANDRA ROAD V. M. & ASSOCIATES JAIPUR—302 001 (RAJASTHAN) COMPANY SECRETARIES Phone: 0141 - 4075010 E-mail: cs.vmanda@gmail.com Scrutinizer’s Report The Chairperson Hindustan Zinc Limited Yashad Bhavan, Yashadgarh, Udaipur-313004 (Rajasthan) Dear Ma’am, Sub: Scrutinizer’s Report on Postal Ballot by way of Electronic Voting (“ [Showing first 8,000 characters — download PDF for full document]