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 June 22, 2026

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 reports a tragic loss-of-life incident at its Moab Khotsong mine

Johannesburg, Monday, 22 June 2026. Harmony Gold Mining Company Limited (“Harmony” and/or “the Company”) regrets to announce that an employee at its Moab Khotsong mine, near Orkney, tragically lost his life in a seismicity-related fall-of-ground incident on the morning of Friday, 19 June 2026.

We extend our deepest condolences to his family, friends and colleagues. Management is providing support to the family and affected employees during this difficult time.

All relevant stakeholders have been notified. An investigation, led by the Department of Mineral and Petroleum Resources (DMPR), is underway.

“We are deeply saddened by the loss of our colleague. Our heartfelt condolences are with his family, friends and colleagues during this very difficult time. Safety is our foremost priority, and we will work closely with the DMPR to understand the circumstances of this incident and ensure that the necessary lessons are applied across our operations,” said Beyers Nel, Chief Executive Officer of Harmony.

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

22 June 2026

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.

Harmony Gold Mining Company Limited

Date: June 22, 2026

By: /s/ Boipelo Lekubo

Name: Boipelo Lekubo

Title: Financial Director

HARMONY GOLD MINING CO LTD 6-K