Announcement PDF Appendix 3Z Final Director’s Interest Notice + See chapter 19 for defined terms. 11/3/2002 Appendix 3Z Page 1 Rule 3.19A.3 Appendix 3Z Final Director’s Interest Notice Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public. Introduced 30/9/2001. Name of entity Carbonxt Group Limited ABN 59 097 246 464 We (the entity) give ASX the following information under listing rule 3.19A.3 and as agent for the director for the purposes of section 205G of the Corporations Act. Name of director David Mazyck Date of last notice 26 September 2025 Date that director ceased to be director 16 September 2026 Part 1 – Director’s relevant interests in securities of which the director is the registered holder In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part. Number & class of securities 426,062 fully paid ordinary shares 5,250,000 unquoted options 3,000,000 quoted options Appendix 3Z Final Director’s Interest Notice + See chapter 19 for defined terms. Appendix 3Z Page 2 11/3/2002 Part 2 – Director’s relevant interests in securities of which the director is not the registered holder Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part. In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust Name of holder & nature of interest Note: Provide details of the circumstances giving rise to the relevant interest Number & class of securities N/A Part 3 – Director’s interests in contracts Detail of contract N/A Nature of interest N/A Name of registered holder (if issued securities) N/A No. and class of securities to which interest relates N/A