Transactions in Own Shares and Voting Rights Tharisa plc (Incorporated in the Republic of Cyprus with limited liability) (Registration number HE223412) JSE share code: THA LSE share code: THS A2X share code: THA ISIN: CY0103562118 LEI: 213800WW4YWMVVZIJM90 ('Tharisa' or the 'Company') Transactions in own shares and voting rights Tharisa, the mining, metals, and innovation company dual-listed on the Johannesburg and London stock exchanges, announces that, in accordance with the terms of its share repurchase programme announced on 26 March 2024 (the 'Repurchase Programme'), it purchased the following number of ordinary shares of USD0.001 each in the Company ('Ordinary Shares') through Peel Hunt LLP ('Peel Hunt'). The Ordinary Shares purchased will be held in treasury for a period not exceeding two calendar years from the repurchase date and, unless reissued, will be cancelled. Purchases during the period 12 August 2024 and 16 August 2024 JSE purchases Date of purchase 12 August 2024 to 16 August 2024 Aggregate number of Ordinary Shares purchased on JSE 15 896 Lowest price paid per share ZAR18.9000 Highest price paid per share ZAR19.1000 Volume weighted average price paid per share ZAR18.9856 The aggregate number of shares purchased on the JSE in terms of the Repurchase Programme since 2 April 2024 is 214 952 at an average price of ZAR18.9612 per share and a total cost (including dealing and associated costs) of ZAR4 075 748.16. London Stock Exchange ('LSE') purchases Date of purchase 12 August 2024 to 16 August 2024 Aggregate number of Ordinary Shares purchased on LSE 128 016 Lowest price paid per share 80.9000 pence Highest price paid per share 81.0000 pence Volume weighted average price paid per share 80.9234 pence The aggregate number of shares purchased on the LSE in terms of the Repurchase Programme since 4 April 2024 is 4 153 749 shares at an average price of 79.8375 pence per share and a total cost (including dealing and associated costs) of GBP3 316 248.61. Following the purchases during this period the Company has 302 596 743 Ordinary Shares in issue, of which 6 924 135 Ordinary Shares are held in treasury. The total number of voting rights in Tharisa is therefore 295 672 608. This figure may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the FCA's Disclosure Guidance and Transparency Rules. The information contained in this update is the responsibility of the board of directors and has not been reviewed or reported on by the Group's external auditors. Paphos, Cyprus 19 August 2024 JSE Sponsor Investec Bank Limited Connect with us on LinkedIn to get further news and updates about our business. Investor Relations Contacts: Ilja Graulich (Head of Investor Relations and Communications) +27 11 996 3500 +27 83 604 0820 igraulich@tharisa.com Broker Contacts: Peel Hunt LLP (UK Joint Broker) Ross Allister / Georgia Langoulant +44 207 418 8900 BMO Capital Markets Limited (UK Joint Broker) Thomas Rider / Nick Macann +44 207 236 1010 Berenberg (UK Joint Broker) Matthew Armitt / Jennifer Lee / Detlir Elezi +44 203 207 7800 About Tharisa Tharisa is an integrated resource group critical to the energy transition and decarbonisation of economies. It incorporates exploration, mining, processing and the beneficiation, marketing, sales, and logistics of PGMs and chrome concentrates, using innovation and technology as enablers. Its principal operating asset is the Tharisa Mine, located in the south-western limb of the Bushveld Complex, South Africa. The mine has a 13-year open pit life and is strategically advancing the vast mechanised underground resource which extends for over 60 years. Tharisa is developing the Karo Platinum Project, a low-cost, open-pit PGM asset located on the Great Dyke in Zimbabwe. The Company is committed to reducing its carbon emissions by 30% by 2030 and the development of a roadmap to become net carbon neutral by 2050. As part of this energy transition, the 40 MW solar project adjacent to the Tharisa Mine is well advanced. Redox One is accelerating the development of a proprietary iron chromium redox flow long duration battery utilising the commodities we mine. Tharisa plc is listed on the Johannesburg Stock Exchange (JSE: THA) and the Main Board of the London Stock Exchange (LSE: THS). Date: 19-08-2024 12:00:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). The JSE does not, whether expressly, tacitly or implicitly, represent, warrant or in any way guarantee the truth, accuracy or completeness of the information published on SENS. 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