1 July 2026

South32 Limited

(Incorporated in Australia under the Corporations Act 2001 (Cth))

(ACN 093 732 597)

ASX / LSE / JSE Share Code: S32; ADR: SOUHY

ISIN: AU000000S320

south32.net

AGREEMENT TO SELL ALUMINIUM VALUE CHAIN ASSETS

South32 Limited (ASX, LSE, JSE: S32; ADR: SOUHY) (South32) is pleased to advise that the following presentation has today been submitted to the National Storage Mechanism and will shortly be available for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism:

·      South32 Limited - Agreement to Sell Aluminium Value Chain Assets

South32 will hold a conference call at 8.00am Australian Western Standard Time (10:00am Australian Eastern Standard Time) on 1 July 2026 to provide an overview of the Transaction including Q&A.

The presentation and an accompanying webcast will be made available on the South32 website on completion (https://www.south32.net/investors/presentations-speeches).

About us

Our purpose is to make a difference by developing natural resources, improving people's lives now and for generations to come. We are trusted by our owners and partners to realise the potential of their resources. We produce minerals and metals critical to the world's energy transition from operations across the Americas, Australia and Southern Africa and we are discovering and responsibly developing our next generation of mines. We aspire to leave a positive legacy and build meaningful relationships with our partners and communities to create brighter futures together.

Further information on South32 can be found at www.south32.net.

JSE Sponsor: The Standard Bank of South Africa Limited
1 July 2026