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Notice to ASX/LSE Shareholdings of persons discharging managerial responsibility (PDMR) / Key Management Personnel (KMP) 1 May 2025 As part of its dual listed company structure, Rio Tinto notifies dealings in Rio Tinto plc and Rio Tinto Limited securities by PDMRs / KMPs to both the Australian Securities Exchange (ASX) and the London Stock Exchange (LSE). Rio Tinto plc Dividend Reinvestment Plan Rio Tinto plc offer a dividend reinvestment plan that gives shareholders the opportunity to use their cash dividends to buy Rio Tinto plc shares in the market. On 17 April 2025, the following PDMR / KMP acquired shares in Rio Tinto plc by way of reinvestment of dividends received on shares as follows: Security Name of PDMR / KMP Number of Shares Acquired Price Per Share USD Rio Tinto plc ADRs Nason, Jennifer 72 58.099722 FCA notifications in accordance with the EU Market Abuse Regulation have been issued to the London Stock Exchange contemporaneously with this release. LEI: 529900X2VMAQT2PE0V24 EXHIBIT 99.4

Notice to ASX/LSE 2 / 2 Contacts Please direct all enquiries to media.enquiries@riotinto.com Media Relations, United Kingdom Matthew Klar M +44 7796 630 637 David Outhwaite M +44 7787 597 493 Media Relations, Australia Matt Chambers M +61 433 525 739 Michelle Lee M +61 458 609 322 Rachel Pupazzoni M +61 438 875 469 Media Relations, Canada Simon Letendre M +1 514 796 4973 Malika Cherry M +1 418 592 7293 Vanessa Damha M +1 514 715 2152 Media Relations, US Jesse Riseborough M +1 202 394 9480 Investor Relations, United Kingdom Rachel Arellano M: +44 7584 609 644 David Ovington M +44 7920 010 978 Laura Brooks M +44 7826 942 797 Weiwei Hu M +44 7825 907 230 Investor Relations, Australia Tom Gallop M +61 439 353 948 Amar Jambaa M +61 472 865 948 Rio Tinto plc 6 St James’s Square London SW1Y 4AD United Kingdom T +44 20 7781 2000 Registered in England No. 719885 Rio Tinto Limited Level 43, 120 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404 This announcement is authorised for release to the market by Andy Hodges, Rio Tinto’s Group Company Secretary. riotinto.com