6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Dated 19 December 2025

Commission File Number 001-31318

Gold Fields Limited

(Translation of registrant’s name into English)

150 Helen Rd.

Sandown, Sandton 2196

South Africa

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

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.

INDEX TO EXHIBITS

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Gold Fields Limited Reg. No. 1968/004880/06) (Incorporated in the Republic of South Africa) JSE, NYSE, DIFX Share Code: GFI ISIN Code:ZAE000018123 (“Gold Fields” or the “Company”) DEALINGS IN SECURITIES BY THE MANAGEMENT SHARE INCENTIVE SCHEME In compliance with paragraphs 3.63 to 3.74 and 3.96 of the Listings Requirements of JSE Limited (the “Listings Requirements”) and per the provisions of the Gold Fields 2012 Share Plan (“Scheme”) the Company hereby advises the following dealings by the Share Incentive Scheme: Name of Scheme: Gold Fields Share Plan 2012 Nature of Transaction: On-market purchase of ordinary shares in Gold Fields for allocation to nominated participants on 25 February 2026 in terms of the Scheme Date of Transaction: 17 December 2025 Class of Securities: Gold Fields Ordinary Shares Number of Securities: 600,000 Market Price per share: R741.1437 Value of Transaction: R444,686,220.00 Nature of Interest: Direct Beneficial In terms of paragraph 3.66 of the Listings requirements the necessary clearance to deal in the above securities has been obtained. 17 December 2025 Sponsor: J.P. Morgan Equities South Africa (Pty) Ltd