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About this update from Hochschild Mining Plc

      ______________________________________________________________________________________________________ 14 January 2026   Holding in Company   Hochschild Mining PLC (the "Company") provides details below of the notification of a change in interest in the Company's shares which was deemed received on 12 January 2026.   ______________________________________________________________________________________________________ Enquiries: Hochschild Mining PLC Raj Bhasin                                                                                                                                                                                 +44 (0)7825 533495 Company Secretary   Hudson Sandler Charlie Jack                                                                                                                                                                                 +44 (0)20 7796 4133 Public Relations ___________________________________________________________________________________________________________________   About Hochschild Mining PLC Hochschild Mining PLC   is a leading precious metals company listed on the   London Stock Exchange   (HOCM.L / HOC LN) and crosstrades on the OTCQX Best Market in the U.S. (HCHDF), with a primary focus on the exploration, mining, processing and sale of silver and gold. Hochschild has over fifty years' experience in the mining of precious metal epithermal vein deposits and operates two underground epithermal vein mines: Inmaculada, located in southern Peru; and San Jose in southern Argentina, and an open pit gold mine, Mara Rosa, located in the state of Goiás, Brazil.  Hochschild also has numerous long-term projects throughout the Americas.   LEI: 549300JK10TVQ3CCJQ89   TR-1: Standard form for notification of major holdings 1. Issuer Details ISIN GB00B1FW5029 Issuer Name HOCHSCHILD MINING PLC UK or Non-UK Issuer UK 2. Reason for Notification An acquisition or disposal of voting rights 3. Details of person subject to the notification obligation Name BlackRock, Inc. City of registered office (if applicable) Wilmington Country of registered office (if applicable) USA 4. Details of the shareholder Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above   City of registered office (if applicable)   Country of registered office (if applicable)   5. Date on which the threshold was crossed or reached 08-Jan-2026 6. Date on which Issuer notified 09-Jan-2026 7. Total positions of person(s) subject to the notification obligation % of voting rights attached to shares (total of 8.A) % of voting rights through financial instruments (total of 8.B 1 + 8.B 2) Total of both in % (8.A + 8.B) Total number of voting rights held in issuer Resulting situation on the date on which threshold was crossed or reached Below 5% Below 5% Below 5% Below 5%  Position of previous notification (if applicable) 3.530000 1.580000 5.110000 8. Notified details of the resulting situation on the date on which the threshold was crossed or reached 8A. Voting rights attached to shares Class/Type of shares ISIN code(if possible) Number of direct voting rights (DTR5.1) Number of indirect voting rights (DTR5.2.1) % of direct voting rights (DTR5.1) % of indirect voting rights (DTR5.2.1) GB00B1FW5029 Below 5% Below 5% Sub Total 8.A Below 5% Below 5% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) Type of financial instrument Expiration date Exercise/conversion period Number of voting rights that may be acquired if the instrument is exercised/converted % of voting rights Securities Lending Below 5% Below 5% Sub Total 8.B1 Below 5%  Below 5% 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) Type of financial instrument Expiration date Exercise/conversion period Physical or cash settlement Number of voting rights % of voting rights   Sub Total 8.B2 9. Information in relation to the person subject to the notification obligation 2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary) Ultimate controlling person Name of controlled undertaking % of voting rights if it equals or is higher than the notifiable threshold % of voting rights through financial instruments if it equals or is higher than the notifiable threshold Total of both if it equals or is higher than the notifiable threshold BlackRock, Inc. (Chain 1) BlackRock Saturn Subco, LLC BlackRock, Inc. (Chain 1) BlackRock Finance, Inc. BlackRock, Inc. (Chain 1) BlackRock Holdco 2, Inc. BlackRock, Inc. (Chain 1) BlackRock Financial Management, Inc. BlackRock, Inc. (Chain 1) BlackRock International Holdings, Inc. BlackRock, Inc. (Chain 1) BR Jersey International Holdings L.P. BlackRock, Inc. (Chain 1) BlackRock Holdco 3, LLC BlackRock, Inc. (Chain 1) BlackRock Cayman 1 LP BlackRock, Inc. (Chain 1) BlackRock Cayman West Bay Finco Limited BlackRock, Inc. (Chain 1) BlackRock Cayman West Bay IV Limited BlackRock, Inc. (Chain 1) BlackRock Group Limited BlackRock, Inc. (Chain 1) BlackRock Finance Europe Limited BlackRock, Inc. (Chain 1) BlackRock Investment Management (UK) Limited BlackRock, Inc. (Chain 2) BlackRock Saturn Subco, LLC BlackRock, Inc. (Chain 2) BlackRock Finance, Inc. BlackRock, Inc. (Chain 2) BlackRock Holdco 2, Inc. BlackRock, Inc. (Chain 2) BlackRock Financial Management, Inc. BlackRock, Inc. (Chain 2) BlackRock International Holdings, Inc. BlackRock, Inc. (Chain 2) BR Jersey International Holdings L.P. BlackRock, Inc. (Chain 2) BlackRock Australia Holdco Pty. Ltd. BlackRock, Inc. (Chain 2) BlackRock Investment Management (Australia) Limited BlackRock, Inc. (Chain 3) BlackRock Saturn Subco, LLC BlackRock, Inc. (Chain 3) BlackRock Finance, Inc. BlackRock, Inc. (Chain 3) BlackRock Holdco 2, Inc. BlackRock, Inc. (Chain 3) BlackRock Financial Management, Inc. BlackRock, Inc. (Chain 3) BlackRock Holdco 4, LLC BlackRock, Inc. (Chain 3) BlackRock Holdco 6, LLC BlackRock, Inc. (Chain 3) BlackRock Delaware Holdings Inc. BlackRock, Inc. (Chain 3) BlackRock Institutional Trust Company, National Association BlackRock, Inc. (Chain 4) BlackRock Saturn Subco, LLC BlackRock, Inc. (Chain 4) BlackRock Finance, Inc. BlackRock, Inc. (Chain 4) BlackRock Holdco 2, Inc. BlackRock, Inc. (Chain 4) BlackRock Financial Management, Inc. BlackRock, Inc. (Chain 4) BlackRock Holdco 4, LLC BlackRock, Inc. (Chain 4) BlackRock Holdco 6, LLC BlackRock, Inc. (Chain 4) BlackRock Delaware Holdings Inc. BlackRock, Inc. (Chain 4) BlackRock Fund Advisors BlackRock, Inc. (Chain 5) BlackRock Saturn Subco, LLC BlackRock, Inc. (Chain 5) BlackRock Finance, Inc. BlackRock, Inc. (Chain 5) BlackRock Holdco 2, Inc. BlackRock, Inc. (Chain 5) BlackRock Financial Management, Inc. BlackRock, Inc. (Chain 5) BlackRock International Holdings, Inc. BlackRock, Inc. (Chain 5) BlackRock Canada Holdings ULC BlackRock, Inc. (Chain 5) BlackRock Asset Management Canada Limited BlackRock, Inc. (Chain 6) BlackRock Saturn Subco, LLC BlackRock, Inc. (Chain 6) BlackRock Finance, Inc. BlackRock, Inc. (Chain 6) BlackRock Holdco 2, Inc. BlackRock, Inc. (Chain 6) BlackRock Financial Management, Inc. BlackRock, Inc. (Chain 6) BlackRock International Holdings, Inc. BlackRock, Inc. (Chain 6) BR Jersey International Holdings L.P. BlackRock, Inc. (Chain 6) BlackRock Holdco 3, LLC BlackRock, Inc. (Chain 6) BlackRock Cayman 1 LP BlackRock, Inc. (Chain 6) BlackRock Cayman West Bay Finco Limited BlackRock, Inc. (Chain 6) BlackRock Cayman West Bay IV Limited BlackRock, Inc. (Chain 6) BlackRock Group Limited BlackRock, Inc. (Chain 6) BlackRock Finance Europe Limited BlackRock, Inc. (Chain 6) BlackRock Advisors (UK) Limited 10. In case of proxy voting Name of the proxy holder   The number and % of voting rights held   The date until which the voting rights will be held   11. Additional Information BlackRock Regulatory Threshold Reporting Team Jana Blumenstein 020 7743 3650 12. Date of Completion 9 th January 2026 13. Place Of Completion 12 Throgmorton Avenue, London, EC2N 2DL, U.K.  

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