Ninety One builds 5.2017% stake in Harmony Gold (NYSE: HMY)

Rhea-AI Filing Summary

Harmony Gold Mining Company Limited reports that institutional investor Ninety One (Pty) Ltd. has increased its holding in Harmony’s ordinary shares. Ninety One now holds a 5.2017% beneficial interest in Harmony’s total issued share capital.

Harmony states it has filed the required notice with South Africa’s Takeover Regulation Panel in line with section 122 of the Companies Act and related regulations. The board confirms responsibility for the accuracy of this disclosure, based on the TRP121.1 form received from Ninety One.

Key Figures

Beneficial interest: 5.2017% of total issued shares

1 metrics

Beneficial interest 5.2017% of total issued shares Stake in Harmony Gold held by Ninety One (Pty) Ltd after acquisition

Key Terms

beneficial interest, Takeover Regulation Panel, TRP121.1 form, section 122(3)(b), +1 more

5 terms

beneficial interest financial

"Notification of an acquisition of beneficial interest in securities"

Takeover Regulation Panel regulatory

"Harmony has, as required by section 122(3)(a) of the Act filed the required notice with the Takeover Regulation Panel."

An independent authority that sets and enforces the rules for bids to buy controlling stakes in listed companies, acting like a referee to make sure all shareholders are treated fairly and that takeover offers are transparent and orderly. Investors care because the panel’s rulings shape the price, timing and legal certainty of takeover offers—affecting whether shareholders get a fair deal, how quickly a transaction completes, and how the market reacts.

TRP121.1 form regulatory

"having received the TRP121.1 form from Ninety One (Pty) Ltd."

section 122(3)(b) regulatory

"In accordance with section 122(3)(b) of the Companies Act 71 of 2008"

JSE Limited Listings Requirements regulatory

"paragraph 6.54 of the JSE Limited Listings Requirements"

Form 6-K: How Foreign Companies Report to the SEC →

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 20, 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” or the “Company”)

Notification of an acquisition of beneficial interest in securities

Johannesburg, Monday, 20 April 2026. In accordance with section 122(3)(b) of the Companies Act 71 of 2008 (the “Act”), Regulation 121(2)(b) of the Companies Act Regulations, 2011 (the “Regulations”) and paragraph 6.54 of the JSE Limited Listings Requirements, shareholders are hereby advised that Harmony has received formal notification that Ninety One (Pty) Ltd. has, in aggregate, acquired an interest in the ordinary shares of the Company, such that the total interest in the ordinary shares in the Company held by the Ninety One (Pty) Ltd. now amounts to 5.2017% of the total issued shares of the Company.

Harmony has, as required by section 122(3)(a) of the Act filed the required notice with the Takeover Regulation Panel.

The board of directors of Harmony accept responsibility for the information contained in this announcement, having received the TRP121.1 form from Ninety One (Pty) Ltd. and to the best of their knowledge believe the information contained in this announcement is accordingly true.

Ends.

For more details contact:

Jared Coetzer

Head: Investor Relations

+27 (0) 82 746 4120

Johannesburg, South Africa

20 April 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: April 20, 2026									By: /s/ Boipelo Lekubo
									Name: Boipelo Lekubo
									Title: Financial Director

FAQ

What stake in Harmony Gold (HMY) did Ninety One (Pty) Ltd acquire?

Ninety One (Pty) Ltd now holds a 5.2017% beneficial interest in Harmony Gold’s total issued ordinary shares. This reflects its aggregate position after recent acquisitions, as formally notified to Harmony and disclosed under South African Companies Act requirements.

Why did Harmony Gold (HMY) publish this 5.2017% beneficial interest notice?

Harmony published the notice because South African law requires disclosure when a shareholder’s beneficial interest crosses certain thresholds. The 5.2017% holding by Ninety One triggered section 122 of the Companies Act and related JSE Listings Requirements, prompting this formal announcement.

Which regulations govern Harmony Gold’s (HMY) beneficial interest announcement?

The announcement cites section 122(3)(b) of the Companies Act 71 of 2008, Regulation 121(2)(b) of the Companies Act Regulations, 2011, and paragraph 6.54 of the JSE Listings Requirements. These rules require public notification of significant shareholding changes in listed companies.

Did Harmony Gold (HMY) notify the Takeover Regulation Panel about this stake?

Yes. Harmony states it has filed the required notice with the South African Takeover Regulation Panel as required by section 122(3)(a) of the Companies Act. This filing follows receipt of Ninety One’s formal TRP121.1 notification of its 5.2017% beneficial interest.

Who takes responsibility for the information in Harmony Gold’s (HMY) 5.2017% stake announcement?

Harmony’s board of directors accepts responsibility for the announcement’s contents. They note that they received the TRP121.1 form from Ninety One (Pty) Ltd and, to the best of their knowledge, believe the disclosed 5.2017% beneficial interest information to be true.