Hidden Valley mine and Wafi-Golpu project update Harmony Gold Mining Company Limited Registration number 1950/038232/06 Incorporated in the Republic of South Africa ISIN: ZAE000015228 JSE share code: HAR (“Harmony” or “the company”) HIDDEN VALLEY MINE AND WAFI-GOLPU PROJECT UPDATE Johannesburg, Thursday, 26 July 2018. Harmony Gold Mining Company Limited (“Harmony” and/or “the Company”) is pleased to advise that Harmony’s Hidden Valley operation reached commercial levels of production in the month of June 2018. “The investment in the stage 5 and 6 cutback was delivered safely, on schedule and below budget and we are confident that Hidden Valley will produce more than 180 000oz in FY19” said Peter Steenkamp, chief executive officer of Harmony. Engagement with the Papua New Guinea government on the application for a special mining lease (SML) for the Wafi-Golpu project is progressing well. On 25 June 2018, the Wafi-Golpu Joint Venture (WGJV) submitted an Environmental Impact Statement (EIS) for the Wafi-Golpu Project to the relevant Papua New Guinean regulatory authority, Conservation and Environment Protection Agency (CEPA). The EIS has been prepared as the statutory basis for the environmental, social and cultural heritage assessment of the Wafi-Golpu Project under the Environment Act 2000 and will inform a decision by the Papua New Guinea Government whether to grant an Environment Permit and, if so, under what conditions. With the permission of CEPA, the EIS has been made available by WGJV on its website at http://www.wafigolpujv.com. Harmony’s FY18 results will be released on 21 August 2018. Ends. For more details contact: Lauren Fourie Investor Relations Manager +27(0)71 607 1498 (mobile) Marian van der Walt Executive: Investor Relations +27(0)82 888 1242 (mobile) Johannesburg, South Africa 26 July 2018 Sponsor: J.P. Morgan Equities South Africa Proprietary Limited. Date: 26/07/2018 09:01:00 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.