[6-K] HARMONY GOLD MINING CO LTD Current Report (Foreign Issuer)

Rhea-AI Filing Summary

Harmony Gold Mining Company Limited filed a Form 6‑K announcing the publication of its FY25 annual reporting suite and the notice of an electronic annual general meeting (AGM).

The suite includes the Integrated, Sustainability, Operational, Financial, Mineral Resources & Reserves, Climate Action & Impact, and Remuneration reports, plus the AGM notice. The audited annual financial statements for FY25 (AFS25) carry an unqualified opinion from Ernst & Young Inc. and contain no modifications to results released on 28 August 2025. The Company also published its B‑BBEE annual compliance report.

The AGM will be held entirely by electronic communication on 26 November 2025 at 11:00 (SA time). The record date to receive the AGM notice was 17 October 2025; the record date to participate and vote is 21 November 2025, with the last date to trade on 18 November 2025. Harmony plans to submit its Form 20‑F on 31 October 2025. Subject to shareholder elections at the AGM, Zanele Matlala will become Chairperson of the Social and Ethics Committee, and Karabo Nondumo will remain a member after stepping down as Chairperson.

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 24, 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 Ltd

Registration number: 1950/038232/06

Incorporated in the Republic of South Africa

ISIN: ZAE000015228

JSE share code: HAR

(Harmony or the Company)

Harmony publishes its suite of reports for the financial year ended 30 June 2025, which includes its notice of the electronic annual general meeting (AGM), a no change statement and proposed changes to the composition of Harmony’s board committees

Johannesburg. Friday, 24 October 2025. Harmony Gold Mining Company Limited (Harmony or the Company) is pleased to announce the publication and distribution of its annual reporting suite for the financial year ended 30 June 2025 (FY25).

The reporting suite includes:

•Integrated report 2025

•Sustainability report 2025

•Operational report 2025

•Financial report 2025

•Mineral Resources and Mineral Reserves 2025

•Climate Action and Impact report 2025

•Remuneration report 2025

•Notice to shareholders with notice of electronic annual general meeting 2025

All the above reports are available

at https://www.harmony.co.za/investors/annual-reports/2025/ and at https://www.har.co.za/25/. Printed copies of Harmony’s suite of FY25 reports are also available upon request, free of charge from the Investor Relations department at HarmonyIR@harmony.co.za.

“FY25 marked another year of consistent delivery for Harmony. We met production guidance for the 10th consecutive year, delivered record free cash flows, and provided strong shareholder returns alongside our growth aspirations. Celebrating our 75th anniversary, gold remains our core business as we expand into copper to enhance our portfolio and diversify our operating footprint. Our success has been built by keeping safety, sustainability and operational excellence as non-negotiables. Mining with purpose enables us to deliver enduring value to our stakeholders as we transition into a higher-quality, globally competitive gold and copper producer,” says Beyers Nel, Harmony’s CEO.

The Company wishes to notify shareholders of its Broad Based Black Economic Empowerment report included on page 146 in its

Sustainability Report 2025. Harmony remains a Company committed to the transformation agenda in South Africa. In compliance with Section 13G (2) of the Broad-Based Black Economic Empowerment Amendment Act No. 46 of 2013 as amended, and paragraph 16.21(g) of the JSE Limited Listings Requirements, the Company’s B-BBEE annual compliance report is available on the Company’s website at

https://www.harmony.co.za/sustainability/governance/bbbee-commission-report-2025

The audited annual financial statements for FY25 (AFS25) are included as part of the Company’s suite of reports. These audited AFS25 contain no modifications to the financial results published on 28 August 2025.

The AFS25 were audited by the Company’s external auditors, Ernst & Young Inc. and their unqualified report, contained in the AFS25, is also available for inspection at the registered office of the Company.

Shareholders are further advised that the 2025 Financial Report, containing the AFS25, is also available on the JSE cloudlink

https://senspdf.jse.co.za/documents/2025/jse/isse/HARE/AFS2025.pdf.

The Form 20F: Harmony’s annual filing will be submitted to the United States Securities and Exchange Commission (SEC) on Friday, 31 October 2025 and will be available on the Company’s website and the SEC’s website at www.sec.gov.

NOTICE OF ELECTRONIC ANNUAL GENERAL MEETING

The AGM of the Company will be held entirely by electronic communication on Wednesday, 26 November 2025 at 11:00 (SA time), to transact the business as stated in the notice of AGM which is available on the Company website. The record date for the purpose of determining which shareholders of the Company are entitled to receive this notice of AGM is Friday, 17 October 2025. The record date in order to participate and vote at the AGM is Friday, 21 November 2025, accordingly the last date to trade is Tuesday, 18 November 2025.

PROPOSED CHANGES TO THE COMPOSITION OF HARMONY’S BOARD COMMITTEES

Shareholders are further advised that Harmony intends to implement the following changes to the composition of the Social and Ethics Committee (“Committee”), subject to the election of the following individuals at the upcoming AGM:

•The board of directors of the Company (“Board”) has approved the appointment of Ms Zanele Matlala as Chairperson of the Committee with effect from the conclusion of the AGM, but subject to her election by the Company’s shareholders as a director of the Company and as a member of the Committee at the upcoming AGM; and

•Ms Karabo Nondumo will step down from her position as Chairperson of the Committee, but will remain a member of the Committee, in each case subject to her election by the Company’s shareholders as a member of the Committee at the upcoming AGM.

Ends.

For more details contact:

Shela Mohatla
Executive: Group Company Secretary
+27(0) 71 571 4249

Johannesburg, South Africa
24 October 2025

Sponsor: J.P. Morgan Equities South Africa Propriety 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: October 24, 2025									By: /s/ Boipelo Lekubo
									Name: Boipelo Lekubo
									Title: Financial Director

FAQ

What did Harmony Gold (HMY) announce in its Form 6-K?

Harmony published its FY25 reporting suite, provided the electronic AGM notice, confirmed an unqualified AFS25 audit with no changes to prior results, and outlined committee changes subject to election.

When is Harmony Gold’s FY25 electronic AGM and at what time?

The AGM will be held on 26 November 2025 at 11:00 (SA time) by electronic communication.

What are the key record and trading dates for HMY’s AGM?

Record date to receive the notice: 17 October 2025. Record date to participate and vote: 21 November 2025. Last date to trade: 18 November 2025.

What is the audit opinion on Harmony’s AFS25?

AFS25 was audited by Ernst & Young Inc. with an unqualified opinion and contains no modifications to the results published on 28 August 2025.

When will Harmony Gold file its Form 20-F?

The Form 20‑F will be submitted on 31 October 2025 and made available on the company’s and the SEC’s websites.

What governance changes did Harmony propose for the Social and Ethics Committee?

Subject to election at the AGM, Zanele Matlala will become Chairperson. Karabo Nondumo will step down as Chairperson and remain a member, subject to election.

Where can investors access Harmony’s FY25 reports and B‑BBEE compliance report?

Reports are on the company’s website links provided; the B‑BBEE annual compliance report is available at the governance page link cited.