哈蒙尼黄金矿业公司任命两位独立非执行董事

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 October 16, 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” and/or the “Company”)

APPOINTMENT OF INDEPENDENT NON-EXECUTIVE DIRECTORS

Johannesburg, Friday, 16 OCTOBER 2026. In accordance with paragraph 6.71 of the JSE Limited Listings Requirements, the Company hereby advises that Mr Alwyn Pretorius and Mr James Boardman have been appointed to the board of directors of Harmony (“Board”) as independent non-executive directors with effect from 15 October 2026.

The Board is satisfied that Mr Alwyn Pretorius and Mr James Boardman meet the applicable independence requirements for directors. The Board further confirms that fit and proper assessments, as contemplated in terms of the JSE Listings Requirements, have been performed in respect of both directors, and is satisfied with the outcomes thereof. In addition, the Company confirms that there are no positive statements to report in respect of the integrity information contained in their respective directors’ declarations.

Mr Pretorius is a former mining executive and qualified engineer with extensive international leadership experience. He held several senior leadership positions at Newmont Corporation, including Regional Senior Vice President for Africa and South America as well as Managing Director of Papua New Guinea. Prior to joining Newmont, he served in various executive roles at Harmony between 2006 and 2015, including Chief Operating Officer.

Mr Boardman is a Chartered Financial Analyst with experience in capital markets, private equity and corporate advisory. His career includes roles at the Johannesburg Stock Exchange, Bain & Company and private capital investment firms, bringing expertise in valuation, risk management and corporate governance.

In welcoming Mr Pretorius and Mr Boardman, the Harmony Chairman, Dr Patrice Motsepe said “We are pleased to welcome Alwyn and James to the Harmony Board. Their combined experience will further strengthen the Board's oversight capabilities and contribute to Harmony’s global competitiveness and focus on safety, operational excellence, disciplined growth and long-term value creation.”

Ends.

For more details, contact:

Shela Mohatla

Executive: Group Company Secretary

+27 (0) 71 571 4249

Johannesburg, South Africa

16 October 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.