Report of Foreign Issuer (6-k)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a16 OR 15d16 UNDER THE

SECURITIES EXCHANGE ACT OF 1934

For September 11, 2019

Harmony Gold Mining Company Limited

Randfontein Office Park

Corner Main Reef Road and Ward Avenue Randfontein, 1759

South Africa

(Address of principal executive offices)

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20 F or Form 40F.)

Form 20F ☒ Form 40F ☐

(Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing

the information to the Commission pursuant to Rule 12g32(b) under the Securities Exchange Act of 1934.)

Yes ☐ No ☒

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”)

HARMONY TO PRESENT AT THE PRECIOUS METALS SUMMIT 2019 AND THE 2019 DENVER GOLD FORUM

Johannesburg, Wednesday, 11 September 2019. Harmony Gold Mining Company Limited (“Harmony”) is pleased to advise that a presentation on Harmony will be shared today at the Precious Metals Summit in Colorado.

In addition to the above conference, Harmony’s CEO, Peter Steenkamp, will give a presentation on Harmony at the 2019 Denver Gold Forum next week, Monday 16 September 2019. The presentations will be available on Harmony’s website:

https://www.harmony.co.za/invest/presentations/2019

Ends.

For more details contact:

Marian van der Walt

Executive: Investor Relations

+27(0)82 888 1242 (mobile)

Max Manoeli

Manager: Investor Relations

+27(0)82 759 1775 (mobile)

11 September 2019

Sponsor:

J.P. Morgan Equities South Africa Proprietary Limited.