By: Canadian mining journal

All conditions precedent for the Transaction have been met and the Transaction is now effective.

The conditions precedent included:

• Canadian Competition Act approval or no action confirmation, which was obtained on 9 September 2024;

• Osisko shareholder approval, which was obtained on 17 October 2024;

• The associated court orders customary for Canadian Plans of Arrangement, which were obtained on 22 October 2024; and

• Receipt of other applicable consents and approvals, including approval from the Toronto Stock Exchange ('TSX') for Osisko to delist from the TSX.

The Transaction enables Gold Fields to consolidate 100% ownership of the Windfall Project and the extensive surrounding exploration district in Québec, Canada.

Gold Fields paid C$1.93 billion (US$1.39 billion), net of cash received as settlement for the Transaction ('Transaction Consideration'). This payment was made using cash on hand, undrawn debt facilities and liquidity facilities totaling US$750m that were executed in October 2024.

The Company remains in a solid financial position, maintaining its investment grade credit rating following settlement of the Transaction Consideration. Gold Fields' financial position is expected to improve further, with strong cash flow growth expected for the balance of the year and into 2025, as production volumes increase at several of its operations.

Mike Fraser, CEO of Gold Fields, welcomed completion of the Transaction saying: 'Deposits of the scale and quality of Windfall with highly prospective exploration camps are rare, particularly in a world-class jurisdiction like Québec, Canada. This transaction

therefore, marks an important step in our journey to continue improving the quality of our portfolio.

'The key members of the Windfall team are remaining with the project, and we look forward to working with them and the Windfall business partners to develop this truly exceptional asset. We are also looking forward to partnering with our host communities, the Cree First Nation of Waswanipi and the city of Lebel-sur-Quévillon, other local communities, and the Québec Government to build the next major mining complex in Québec.'

ENDS

28 October 2024

Sponsor:

J.P. Morgan Equities South Africa (Pty) Ltd

Financial advisor:

RBC Capital Markets

Legal advisor:

McCarthy Tétrault

For investor enquiries contact:

Jongisa Magagula

Tel: +27 11 562 9775

Mobile: +27 67 419 9503

Email: Jongisa.Magagula@goldfields.com

Thomas Mengel

Tel: +27 11 562 9849

Mobile: +27 72 493 5170

Email: Thomas.Mengel@goldfields.com

For media enquiries contact:

Sven Lunsche

Tel: +27 11 562 9763

Mobile: +27 83 260 9279

Email: Sven.Lunsche@goldfields.com

About Gold Fields

Gold Fields is a globally diversified gold producer with nine operating mines in Australia, South Africa, Ghana, Chile and Peru and one project in Canada. We have total attributable annual gold- equivalent production of 2.30Moz, proved and probable gold Mineral Reserves of 46.1Moz, measured and indicated gold Mineral Resources of 31.1Moz (excluding Mineral Reserves) and inferred Gold Mineral Resources of 11.2Moz (excluding Mineral Reserves). Our shares are listed on the Johannesburg Stock Exchange (JSE) and our American depositary shares trade on the New York Exchange (NYSE).

Forward-looking statements

This announcement contains forward-looking statements. All statements other than statements of historical fact included in this announcement may be forward-looking statements. Forward- looking statements may be identified by the use of words such as 'aim', 'anticipate', 'will', 'would', 'expect', 'may', 'could', 'believe', 'target', 'estimate', 'project' and words of similar meaning.

These forward-looking statements, including among others, those relating Gold Fields' future business strategy, development activities (including the permitting, development and operations of the Windfall project) and other initiatives, business prospects, financial positions, production and operational guidance are necessary estimates reflecting the best judgement of the senior management of Gold Fields and involve a number of risks and uncertainties that could cause actual results to differ materially from those suggested by the forward-looking statements. By their nature, forward-looking statements involve risk and uncertainty because they relate to future events and circumstances and should

be considered in light of various important factors, including those set forth in Gold Fields' Integrated Annual Report 2023 filed with the Johannesburg Stock Exchange and annual report on Form 20-F filed with the United States Securities and Exchange Commission

(SEC) on 28 March 2024 (SEC File no. 001-31318). Readers are cautioned not to place undue reliance on such statements. These forward-looking statements speak only as of the date they are made.

Gold Fields undertakes no obligation to update publicly or release any revisions to these forward-looking statements to reflect events or circumstances after the date of this announcement or to reflect the occurrence of unanticipated events. These forward-looking statements have not been reviewed or reported on by the Company's external auditors.