ex10d21form604era

Form 604 Corporations Act 2001 Section 671B Notice of change of interests of substantial holder To Company Name/Scheme Energy Resources of Australia Ltd. (ERA) ACN/ARSN ACN 008 550 865 1. Details of substantial holder Name Rio Tinto Limited (ACN 004 458 404) and each of the parties set out in Annexure A (the Substantial Shareholders) ACN/ARSN (if applicable) See Annexure A There was a change in the interests of the substantial holder on: 21/11/2024 The previous notice was given to the company on 27/02/2020 The previous notice was dated 27/02/2020 2. Previous and present voting power The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate had a relevant interest in when last required, and when now required, to give a substantial holding notice to the company or scheme, are as follows: Class of securities Previous notice Present notice Person’s votes Voting power Person’s votes Voting power Fully paid ordinary shares in ERA 3,186,682,634 86.33% 399,036,399,431 98.43% 3. Changes in relevant interests Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows: Date of change Person whose relevant interest changed Nature of change Consideration given in relation to change Class and number of securities affected Person’s votes affected 12/05/2023 See Annexure A New shares issued by ERA following completion of the renounceable entitlement offer announced by ERA on 4 April 20231 $0.02 per new ordinary share in ERA 15,933,413,170 ordinary shares 15,933,413,170 21/11/2024 See Annexure A New shares issued by ERA following completion of the renounceable entitlement offer announced by ERA on 29 August 2024 $0.002 per new ordinary share in ERA 379,916,303,627 ordinary shares 379,916,303,627 1Although the Substantial Shareholders were issued further shares in ERA pursuant to the entitlement offer launched by ERA on 4 April 2023, the Substantial Shareholders' relevant interest, as a percentage of the total issued shares in ERA, did not change. EXHIBIT 99.10

4. Present relevant interests Particulars of each relevant interest of the substantial holder in voting securities after the change are as follows: Holder of relevant interest Registered holder of securities Person entitled to be registered as holder Nature of relevant interest Class and number of securities Person’s votes North Limited North Limited North Limited Relevant interest under s608(1) of the Corporations Act 2001 (Cth) (Corporations Act), as the holder of ordinary shares 240,529,208,153 ordinary shares 59.33% North Limited Peko-Wallsend Pty Ltd Peko-Wallsend Pty Ltd Relevant interest under s608(3) of the Corporations Act as the sole shareholder in Peko-Wallsend Pty Ltd 158,507,191,278 ordinary shares 39.10% Peko-Wallsend Pty Ltd Peko-Wallsend Pty Ltd Peko-Wallsend Pty Ltd Relevant interest under s608(1) of the Corporations Act as the registered holder of ordinary shares 158,507,191,278 ordinary shares 39.10% Each Substantial Shareholder North Limited North Limited Relevant interest under s608(3) of the Corporations Act 240,529,208,153 ordinary shares 59.33% Each Substantial Shareholder Peko-Wallsend Pty Ltd Peko-Wallsend Pty Ltd Relevant interest under s608(3) of the Corporations Act 158,507,191,278 ordinary shares 39.10% 5. Changes in association The persons who have become associates of, ceased to be associates of, or have changed the nature of their association with, the substantial holder in relation to voting interests in the company or scheme are as follows: Name and ACN/ARSN (if applicable) Nature of association Not applicable Not applicable 6. Addresses The addresses of persons named in this form are as follows: Name Address See Annexure A Signature print name Tim Paine capacity Company Secretary Rio Tinto Limited sign here date 21/11/2024

Annexure "A" to Form 604 This is Annexure "A" of 1 page referred to in Form 604 signed by me and dated 21 November 2024. ________________________________________ Tim Paine Company Secretary, Rio Tinto Limited Substantial Shareholders a) North Limited (ACN 005 233 689) of Level 18, Central Park, 152-158 St Georges Terrace, Perth, WA, 6000; b) Peko-Wallsend Pty Ltd (ACN 000 245 054) of Level 18, Central Park, 152-158 St Georges Terrace, Perth, WA, 6000; c) Rio Tinto Limited (ACN 004 458 404) of Level 43, 120 Collins Street, Melbourne, VIC 3000; d) Each subsidiary of Rio Tinto Limited (ACN 004 458 404) other than North Limited and Peko-Wallsend Pty Ltd of Level 18, Central Park, 152-158 St Georges Terrace, Perth, WA, 6000; e) Rio Tinto plc of 6 St James's Square, London SW1Y 4AD; and f) Each subsidiary of Rio Tinto plc of 6 St James's Square, London SW1Y 4AD. (each a Substantial Shareholder, together the Substantial Shareholders). Rio Tinto Limited (ACN 004 458 404) gives this notice on its own behalf and on behalf of each of the other Substantial Shareholders.