Credit Rating received by Hindustan Copper Limited from ICRA Limited is submitted.

No. HCL/SCY/SE/2026 22.09.2026 To, To, BSE Limited National Stock Exchange of India Ltd Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G Dalal Street Bandra-Kurla Complex, Bandra(East) Mumbai 400 001 Mumbai 400 051 BSE Scrip Code: 513599 NSE Symbol: HINDCOPPER Sub: Upgrading of Long-term Credit Rating by ICRA Limited Sir / Madam, It is informed that ICRA Ltd vide its email dated 22.09.2026 has upgraded the Long-term rating to [ICRA]AAA (Stable) (pronounced ICRA triple A (Stable)) from [ICRA]AA+ (Stable) (pronounced ICRA AA+ (Stable)) and reaffirmed the Short-term rating at [ICRA]A1+ (pronounced ICRA A one plus) in respect of limit of Rs.2100 crore Bank facilities/ Instruments of Hindustan Copper Ltd. Further, ICRA Ltd vide its email dated 22.09.2026 has reaffirmed the Short-term rating at [ICRA] A1+ (pronounced ICRA A one plus) in respect of Rs.100 crore Commercial Paper of Hindustan Copper Ltd. Copy of above-mentioned email is enclosed. The above is submitted pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 for information please. Thanking you, Yours faithfully, (Mritunjay Kumar Dev) Company Secretary & Compliance Officer Encl. as stated फोन Tel: 2283-2226 (Hunting). वेब Web: www.hindustancopper.com, ईमेल Email: investors_cs@hindustancopper.com Re: ICRA's Credit Rating for below mentioned Instruments of Hindustan Copper Limited Sumit Jhunjhunwala, Girishkumar Kadam, Ankit Ravi Gupta to: Jain, Prerna Aggarwal 1, Client.sdd, Kinjal 22-09-2026 18:18 Manohar Rathod, ICRA Ratings Cc: "naveen_d@hindustancopper.com", Mritunjay Kumar Dev Dear Madam / Sir Thank you so much for the trail mail communication please. It is requested that a letter on ICRA's letter head may also be given to us at the earliest possible please. Thank you once again. CA Ravi Kumar Gupta Executive Director (Finance) Hindustan Copper Limited Head Office - Kolkata Cell: 9433274328 "ICRA Ratings" Dear Sir, Re: ICRA’s Credit Rating for below me... 22-09-2026 15:45:04 From: "ICRA Ratings" <Ratingcommunication@icraindia.info> To: "naveen_d@hindustancopper.com" <naveen_d@hindustancopper.com>, "ravi_g@hindustancopper.com" <ravi_g@hindustancopper.com> Cc: "Sumit Jhunjhunwala" <sumit.jhunjhunwala@icraindia.com>, "Girishkumar Kadam" <girishkumar@icraindia.com>, "Ankit Jain" <ankit.jain@icraindia.com>, "Prerna Aggarwal 1" <prerna.aggarwal1@icraindia.com>, "Client.sdd" <client.sdd@icraindia.info>, "Kinjal Manohar Rathod" <kinjal.rathod@icraindia.com> Date: 22-09-2026 15:45 Subject: ICRA's Credit Rating for below mentioned Instruments of Hindustan Copper Limited Dear Sir, Re: ICRA’s Credit Rating for below mentioned Instruments of Hindustan Copper Limited As per the Rating Agreement/Statement of Work executed with ICRA Limited, ICRA’s Rating Committee has taken the following rating actions for the mentioned instruments of your company: Instrument Rated Amount Financial Sector (Rs. crore) Rating Action[1] Regulator# [ICRA]AAA (Stable); upgraded Long-term Fund-based – Term loan 150.00 RBI from [ICRA]AA+ (Stable) [ICRA]AAA (Stable); upgraded Long-term Fund-based – Cash Credit 350.00 RBI from [ICRA]AA+ (Stable) Short term non-fund-based-Others 300.00 [ICRA]A1+; reaffirmed RBI [ICRA]AAA (Stable); upgraded Long-term-non-fund-based-Others 500.00 RBI from [ICRA]AA+ (Stable) [ICRA]AAA (Stable)/ [ICRA]A1+; long-term rating Long-term/short-term Unallocated Limits 800.00 RBI upgraded from [ICRA]AA+ (Stable); short-term reaffirmed Commercial Paper^ 100.00 [ICRA]A1+; reaffirmed RBI Total 2,200.00 ^ Yet to be placed SEBI’s grievance redressal/dispute resolution and SEBI investor protection mechanisms such as SCORES and ODR shall not be available for activities and instruments which fall under the regulatory purview of Financial Sector Regulators other than SEBI. The rationale for the Rating will be shared shortly. The Rating(s) assigned must be understood solely as an opinion and should not be treated, or cause to be treated, as recommendation to buy, sell, or hold the rated instrument availed/issued by your company. ICRA reserves the right to review and/ or, revise the above Rating(s) at any time on the basis of new information or unavailability of information or such other circumstances, which ICRA believes, may have an impact on the Rating(s) assigned to your company. Additionally, we wish to highlight the following with respect to the Rating(s): a. If the instrument rated, as above, is not issued by you within a period of 3 months from the date of this letter, the Rating(s) would need to be revalidated before issuance; b. Once the instrument is issued, the rating is valid throughout the life of the captioned programme (which shall have a maximum maturity of twelve months from the date of the issuance of the instrument). The Rating(s) is restricted to the rated amount mentioned above. In case, you propose to enhance the size of the rated instrument, the same would require to be rated afresh. ICRA does not assume any responsibility on its part, for any liability, that may arise consequent to your not complying with any eligibility criteria, applicable from time to time, for issuance of rated instrument. This Rating(s) is specific to the terms and conditions of the proposed issue as was indicated to us by you and any change in the terms or size of the issue would require the Rating(s) to be reviewed by us. If there is any change in the terms and conditions or size of the instrument rated, as above, the same must be brought to our notice before the issue of the instrument. If there is any such change after the Rating(s) is assigned by us and accepted by you, it would be subject to our review and may result in change in the Rating(s) assigned. You are also requested to forthwith inform us about any default or delay in repayment of interest or principal amount of the instrument rated, as above, or any other debt instruments/ borrowing and keep us informed of any other developments which may have a direct or indirect impact on the debt servicing capability of the company including any proposal for re-schedulement or postponement of the repayment programmes of the dues/ debts of the company with any lender(s) / investor(s). Further, you are requested to inform us immediately as and when the borrowing limit for the instrument rated, as above, or as prescribed by the regulatory authority(ies) is exceeded. We thank you for your kind cooperation extended during the course of the rating exercise. Should you require any clarification, please do not hesitate to get in touch with us. We look forward to your communication and assure you of our best services. Thanks & Regards, Prerna Aggarwal Senior Analyst ICRA Limited Complete definitions of the ratings assigned are available at www.icra.in. Disclaimer: This is a system‑generated email. Please do not modify the subject line while replying to this mail, as it contains the case reference required for tracking the correspondence. For clarifications, please contact the assigned analytical team copied on this email. Disclaimer: The contents of this email and any attachments are confidential and intended for the named recipient(s) only. Email transmission is not guaranteed to be secure or error-free, as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. Therefore, the email and its contents (with or without errors) shall not attach any liability to the originator, ICRA, or its affiliates. If you are not the intended recipient, you should not disseminate, distribute, or copy this email. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. Thank you for your cooperation. CAUTION: This e [Showing first 8,000 characters — download PDF for full document]