Harmony Gold Mining Company Limited Registration number 1950/038232/06 Incorporated in the Republic of South Africa ISIN: ZAE000015228 JSE share code: HAR (“Harmony” and/or “the Company”) CHANGES TO THE COMPOSITION OF HARMONY’S BOARD COMMITTEES Johannesburg. Thursday, 18 August 2022. In compliance with paragraph 3.59 of the Listings Requirements of the JSE Limited, Harmony herewith notifies shareholders of changes to the composition of its board and board committees following the appointment of two new independent non- executive directors (Mr Bongani Nqwababa and Mr Martin Prinsloo) on 18 May 2022 and the resignation of one director (Mr Modise Motloba) on 27 June 2022. The board and committee changes are noted below: Mr Bongani Nqwababa as the chairman and member of the investment committee. Mr Nqwababa will also serve as a member of the remuneration committee; Mr Martin Prinsloo as a member of the technical and investment committees; and Ms Karabo Nondumo as the newly elected deputy chairman of the board. Ends. For more details contact: Jared Coetzer Head: Investor Relations +27 (0) 82 746 4120 Johannesburg, South Africa 18 August 2022 Sponsor: J.P. Morgan Equities South Africa Proprietary Limited.