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 April 29, 2025

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”)

Harmony announces a loss-of-life incident at Saaiplaas Reclamation Dam

Johannesburg, Tuesday, 29 April 2025. Harmony Gold Mining Company Limited (“Harmony” and/or “the Company”) regrettably announces a loss-of-life incident that occurred at its surface operations at the Saaiplaas Reclamation Dam in Virginia, Free State, on Sunday, 27 April 2025.

Investigations are underway and all the relevant authorities have been informed. The Department of Mineral and Petroleum Resources (DMPR), labour representatives and mine management are currently investigating the cause of the incident.

Family members and colleagues have been informed, with the mine’s leadership team providing assistance and support to the family of the deceased.

The safety of our employees remains a priority at Harmony and we endeavour to ensure that all safety protocols are followed at all times.

Ends.

For more details contact:

Chipo Morapedi-Mrara

Head of Communications

+27 (0)60 571 0797

Jared Coetzer

Head of Investor Relations

+27 (0)82 746 4120

Mashego Mashego

Executive Director:

+27 (0)82 767 1072

29 April 2025

Sponsor:

J.P. Morgan Equities South Africa Proprietary Limited.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on

its behalf by the undersigned, thereunto duly authorized.