Appointment of future External Auditor 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”) APPOINTMENT OF FUTURE EXTERNAL AUDITOR Johannesburg, Friday, 1 July 2022. In compliance with paragraph 3.75 to 3.78 of the JSE Limited Listings Requirements, and in accordance with the mandatory audit firm rotation rule issued by the Independent Regulatory Board for Auditors, shareholders are advised that the Company intends to appoint Ernst & Young Incorporated (“EY”) as the external auditor for the Company with effect from the financial year commencing 1 July 2023, being the 2024 financial year. The Audit and Risk Committee has recommended, and the Board endorsed, the proposed appointment following the conclusion of a comprehensive tender process. The appointment will be subject to shareholder approval at the next annual general meeting (AGM) to be held on 24 November 2022. The current firm, PricewaterhouseCoopers Inc. (“PwC”), will continue to act as external auditors of the Company for the 2022 and 2023 financial years, subject to shareholder approval at the 24 November 2022 AGM. The Company thanks PwC for their services over the years and looks forward to beginning a new chapter with EY. Ends. For more details contact: Jared Coetzer Head of Investor Relations +27 (0)82 746 4120 Johannesburg, South Africa 1 July 2022 Sponsor: J.P. Morgan Equities South Africa Proprietary Limited Date: 01-07-2022 11:20:00 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. The JSE, their officers, employees and agents accept no liability for (or in respect of) any direct, indirect, incidental or consequential loss or damage of any kind or nature, howsoever arising, from the use of SENS or the use of, or reliance on, information disseminated through SENS.