Harmony Gold Mining Company Ltd Registration number: 1950/038232/06 Incorporated in the Republic of South Africa ISIN: ZAE000015228 JSE share code: HAR (“Harmony” or “Company”) DEALING IN SECURITIES BY EXECUTIVE DIRECTOR AND PRESCRIBED OFFICER Johannesburg, 24 May 2023. In compliance with paragraphs 3.63 to 3.74 of the JSE Listings Requirements, the following information is disclosed: Name of executive director: P Steenkamp Company: Harmony Nature of interest: Direct beneficial Date of transaction 19 May 2023 Type of transaction: On-market sale of ordinary shares Class of securities: Ordinary shares Number of shares: 83 000 Volume Weighted Average price R94.35 per share: Highest sale price: R95.87 Lowest sale price: R94.50 Total value of shares: R7 831 050 Date of transaction 22 May 2023 Number of shares: 7 000 Price per share: R95.50 Total value of shares: R668 500 Date of transaction 23 May 2023 Number of shares: 10 000 Price per share: R93.25 Total value of shares: R932 500 Name of prescribed officer: B Nel Company: Harmony Nature of interest: Direct beneficial Date of transaction 19 May 2023 Type of transaction: On-market sale of ordinary shares Class of securities: Ordinary shares Number of shares: 15 000 Volume Weighted Average price R95.88 per share: Highest sale price: R95.98 Lowest sale price: R95.75 Total value of shares: R1 438 200 Prior clearance was obtained in respect of the above dealings by the executive director and prescribed officer. Ends. For more details, contact: Jared Coetzer Head: Investor Relations +27 (0) 82 746 4120 Johannesburg, South Africa 24 May 2023 Sponsor: J.P. Morgan Equities South Africa Proprietary Limited