Harmony Gold reports fatal incident at Moab Khotsong

Harmony Gold Mining Company Limited (HMY) reports that an employee at its Moab Khotsong mine near Orkney died in a seismicity-related incident on September 6, 2026.

Rhea-AI Filing Summary

Harmony Gold Mining Company Limited (HMY) reports that an employee at its Moab Khotsong mine near Orkney died in a seismicity-related incident on September 6, 2026. Management is supporting the family and affected employees, and all relevant stakeholders have been notified.

The Department of Mineral and Petroleum Resources is leading an investigation into the circumstances of the incident. Chief Executive Officer Beyers Nel emphasized that safety is the company’s top priority and that Harmony intends to learn from the event and strengthen its efforts to prevent a recurrence.

Key Terms

seismicity-related incident, Department of Mineral and Petroleum Resources, foreign private issuer, loss-of-life incident

4 terms

seismicity-related incident technical

"tragically lost his life in a seismicity-related incident on Sunday"

Department of Mineral and Petroleum Resources regulatory

"an investigation, led by the Department of Mineral and Petroleum Resources"

foreign private issuer regulatory

"REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16"

A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.

loss-of-life incident other

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What incident did Harmony Gold Mining Company Limited (HMY) report in this Form 6-K?

Harmony reported that an employee at its Moab Khotsong mine near Orkney died in a seismicity-related incident on September 6, 2026. The company expressed condolences to the family, friends, and colleagues of the deceased employee.

How is Harmony Gold Mining Company Limited (HMY) responding to the Moab Khotsong incident?

Harmony states that management is providing support to the deceased employee’s family and affected colleagues. The company also emphasized its commitment to understanding the circumstances, learning from the incident, and strengthening safety efforts to prevent a recurrence.

Who is investigating the Moab Khotsong incident reported by HMY?

The incident is being investigated by the Department of Mineral and Petroleum Resources (DMPR), which is leading an inquiry into the circumstances of the seismicity-related event. Harmony notes that all relevant stakeholders have been notified.

What did Harmony’s CEO say about the Moab Khotsong fatality?

Chief Executive Officer Beyers Nel said Harmony is “deeply saddened” by the loss of life and stated that nothing is more important than the safety of its people. He added the company is committed to understanding the incident and preventing a recurrence.

Who is the investor relations contact for Harmony Gold Mining Company Limited (HMY) regarding this report?

The investor relations contact is Jared Coetzer, Head of Investor Relations, with a listed phone number of +27 (0)82 746 4120, as provided in the report.

What is the date of Harmony Gold Mining Company Limited’s report on the Moab Khotsong incident?

The report is dated September 7, 2026, the day after the seismicity-related incident that occurred on September 6, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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 7, 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, 07 September 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 incident on Sunday, 6 September 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 and an investigation, led by the Department of Mineral and Petroleum Resources (DMPR), is underway.

“We are deeply saddened by this tragic loss of life. Nothing is more important than the safety of our people. We are committed to fully understanding the circumstances of this incident, learning from it and strengthening our efforts to prevent a recurrence,” said Beyers Nel, Chief Executive Officer of Harmony.

Jared Coetzer

Head of Investor Relations

+27 (0)82 746 4120

07 September 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: September 7, 2026									By: /s/ Boipelo Lekubo
									Name: Boipelo Lekubo
									Title: Financial Director