RIO TINTO LTD

6-K 1 form6k2026oct.htm 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

Month of October 2026

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

Form 20-F☒Form 40-F☐

EXHIBITS

99.1 Stock Exchange announcement dated 1 October 2026 entitled ‘Total Voting Rights and Issued Capital’.

99.2 Stock Exchange announcement dated 1 October 2026 entitled ‘Issue of Shares’.

99.3 Media Release dated 1 October 2026 entitled ‘Rio Tinto, Tasmanian Government and Commonwealth Government secure the future of Bell Bay Aluminium until 2031’.

99.4 Stock Exchange announcement dated 2 October 2026 entitled ‘Shareholdings of persons discharging managerial responsibility (PDMR) / Key Management Personnel (KMP)’.

99.5 Stock Exchange announcement dated 7 October 2026 entitled ‘Form 603-Notice of initial substantial holder’.

99.6 Stock Exchange announcement dated 8 October 2026 entitled ‘Form 605-Notice of ceasing to be a substantial holder’.

99.7 Stock Exchange announcement dated 8 October 2026 entitled ‘Shareholdings of persons discharging managerial responsibility (PDMR) / Key Management Personnel (KMP)’.

99.8 Stock Exchange announcement dated 13 October 2026 entitled ‘Appendix 3G – Notification of issue, conversion or payment up of unquoted equity securities’.

99.9 Stock Exchange announcement dated 13 October 2026 entitled ‘Appendix 3G – Notification of issue, conversion or payment up of unquoted equity securities’.

99.10 Stock Exchange announcement dated 13 October 2026 entitled ‘Appendix 3H – Notification of cessation of securities’.

99.11 Stock Exchange announcement dated 22 October 2026 entitled ‘Shareholdings of persons discharging managerial responsibility (PDMR) / Key Management Personnel (KMP)’.

99.12 Media Release dated 23 October 2026 entitled ‘Rio Tinto to invest $1.9 billion to develop the Kangwinan bauxite project in Western Cape York, Queensland’.

99.13 Media Release dated 29 October 2026 entitled ‘Rio Tinto celebrates opening of $1.4 billion lithium projects in Argentina’.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorised.