Please refer the enclosed file

H ZL/2026-27/SECY/77 August 25, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers “Exchange Plaza” Plot No C/1, 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 Sub: Intimation under Regulations 30 and 30A of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations 2015 (“LODR”) read with Clause 5A, Para A, Part A, Schedule III of the LODR Dear Sir/Ma’am, This intimation is in reference to the earlier intimations dated April 21, 2025, June 26, 2025, February 02, 2026 and May 15, 2026 under Regulations 30 and 30A of LODR. This is to inform you that we, Hindustan Zinc Limited (“HZL”) received an intimation under Regulation 30A of the LODR read with Clause 5A, Para A, Part A, Schedule III of the LODR from Vedanta Resources Limited, Twin Star Holdings Ltd., Vedanta Holdings Mauritius II Limited and Welter Trading Limited (as related parties of HZL) on August 24, 2026 at 10:22 PM (IST) (“30A Intimation”). The information required to be disclosed by HZL pursuant to its obligations under Regulations 30 and 30A of the LODR read with Clause 5A, Para A, Part A, Schedule III of the LODR, subsequent to the receipt of the 30A Intimation, is enclosed herewith as Annexure A. We request you to kindly take the above information on record. Thanking You. Yours faithfully, For Hindustan Zinc Limited Aashhima V Khanna Company Secretary & Compliance Officer Encl: as above ANNEXURE A Disclosure pursuant to Regulation 30 and 30A of the Securities and Exchange Board of India (“SEBI”) (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“LODR Regulations”) read with Master Circular no. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 issued by SEBI on January 30, 2026 # Particulars Details In case of rescission, amendment or alteration, listed entity shall disclose additional details to the stock exchange(s): i. name and details of the parties to Hindustan Zinc Limited was not a party to the facility the Facilities Agreements. agreement dated April 17, 2025, the facilities agreement dated June 24, 2025 and the facilities agreement dated January 30, 2026 as amended and supplemented with an amended and restatement deed dated May 13, 2026 (collectively, the “Facilities Agreements”). The following entities were parties to the facility agreement dated April 17, 2025: Borrower Twin Star Holdings Ltd. Guarantors Vedanta Resources Limited Welter Trading Limited Arrangers Barclays Bank PLC First Abu Dhabi Bank PJSC Mashreqbank PSC Deutsche Bank AG (Singapore Branch) Agent Kroll Trustee Services (HK) Limited (formerly, Madison Pacific Trust Limited) Lenders (as original lenders) Barclays Bank PLC First Abu Dhabi Bank PJSC Mashreqbank PSC Standard Chartered Bank (Mauritius) Limited Deutsche Bank AG (Singapore Branch) Standard Chartered Bank, GIFT City The following entities were parties to the facilities agreement dated June 24, 2025: # Particulars Details Borrower Vedanta Resources Limited Guarantors Twin Star Holdings Ltd. Welter Trading Limited Arrangers First Abu Dhabi Bank PJSC Mashreqbank PSC Standard Chartered Bank Standard Chartered Bank (Mauritius) Limited Sumitomo Mitsui Banking Corporation (Singapore Branch) Agent Kroll Trustee Services (HK) Limited (formerly, Madison Pacific Trust Limited) Lenders (as original lenders) First Abu Dhabi Bank PJSC Mashreqbank PSC Standard Chartered Bank Standard Chartered Bank (Mauritius) Limited Sumitomo Mitsui Banking Corporation (Singapore Branch) The following entities were parties to the facilities agreement dated January 30, 2026 as amended and supplemented with an amended and restatement deed dated May 13, 2026: Borrower Vedanta Resources Limited Guarantors Twin Star Holdings Ltd. Vedanta Holdings Mauritius II Limited Welter Trading Limited Agent Kroll Trustee Services (HK) Limited (formerly, Madison Pacific Trust Limited) Arrangers/ Lenders Bank of Maharashtra IFSC Banking Unit DB International (Asia) Limited First Abu Dhabi Bank PJSC JP Morgan Chase Bank, N.A., London Branch Mashreqbank PSC # Particulars Details National Development Bank PLC Standard Chartered Bank (Mauritius) Limited Standard Chartered Bank (Singapore) Limited Sumitomo Mitsui Banking Corporation (Singapore Branch) ii. nature of the agreement Not applicable. Pursuant to the terms of the respective Facilities Agreement, the respective borrowers and the guarantors (as member of the promoter group of Vedanta Limited, which is the promoter of Hindustan Zinc Limited) agreed to ensure that Hindustan Zinc Limited shall not undertake certain actions / activities unless permitted within the parameters of the Facilities Agreements, as disclosed to the stock exchanges under the earlier disclosures dated April 21, 2025, June 26, 2025, February 02, 2026 and May 15, 2026 (collectively, the “Earlier Disclosures”). This disclosure pertains to rescission of the Facilities Agreements pursuant to repayment of the facilities and all the other liabilities under the respective Facilities Agreements. Accordingly, all restrictions on Hindustan Zinc Limited as disclosed under the Earlier Disclosures stand released. iii. cdate of execution of the agreement Not applicable. Pursuant to the terms of the respective Facilities Agreement, the respective borrowers and the guarantors (as member of the promoter group of Vedanta Limited, which is the promoter of Hindustan Zinc Limited) agreed to ensure that Hindustan Zinc Limited shall not undertake certain actions / activities unless permitted within the parameters of the Facilities Agreements, as disclosed to the stock exchanges under the Earlier Disclosures. This disclosure pertains to rescission of the Facilities Agreements pursuant to repayment of the facilities and all the other liabilities under the respective Facilities Agreements. Accordingly, all restrictions on Hindustan Zinc Limited as disclosed under the Earlier Disclosures stand released. # Particulars Details iv. edetails and reasons for amendment Not applicable. )o r alteration and impact thereof (including impact on management or control and on the restriction or liability quantified earlier); v. freasons for rescission and impact Pursuant to the terms of the respective Facilities )t hereof (including impact on Agreement, the respective borrowers and the management or control and on the guarantors (as member of the promoter group of restriction or liability quantified Vedanta Limited, which is the promoter of Hindustan earlier) Zinc Limited) agreed to ensure that Hindustan Zinc Limited shall not undertake certain actions / activities unless permitted within the parameters of the Facilities Agreements, as disclosed to the stock exchanges under the Earlier Disclosures. This disclosure pertains to rescission of the Facilities Agreements pursuant to repayment of the facilities and all the other liabilities under the respective Facilities Agreements. Accordingly, all restrictions on Hindustan Zinc Limited as disclosed under the Earlier Disclosures stand released.