Harmony Gold Mining Company Limited Registration number 1950/038232/06 Incorporated in the Republic of South Africa ISIN: ZAE000015228 JSE share code: HAR (“Harmony”) LOSS-OF-LIFE INCIDENT AT HARMONY’S KUSASALETHU MINE Johannesburg, Tuesday, 2 May 2023. Harmony Gold Mining Company Limited (“Harmony”) regrets to announce a loss of life incident at its Kusasalethu Mine, near Carletonville on Sunday, 30 April 2023. A seismic induced fall of ground event resulted in the loss of life of one of its night shift team leaders. The management and employees of Harmony express their sincerest condolences to the family of the deceased and to the Kusasalethu team who have been affected by this tragic incident. Peter Steenkamp, the Chief Executive Officer, stated, “I am deeply disappointed by this loss of life, especially considering the significant efforts we have made to foster a safety culture within our organisation.” Safety is at the core of Harmony’s values, and the company continues to prioritise rigorous safety standards throughout all of its operations. All work in the affected section has been temporarily ceased, pending a comprehensive internal investigation. For more details contact: Ofentse Mpitso Acting Head of Communications +27 (0)83 294 5667 (mobile) or Mashego Mashego Executive Director: Corporate affairs +27 (0) 82 767 1072 (mobile) 2 May 2023 Sponsor: J.P. Morgan Equities South Africa Proprietary Limited.