Announcement PDF Appendix 3Y Change of Director’s Interest Notice Rule 3.19A.2 Appendix 3Y Change of 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 30/09/01 Amended 01/01/11 Name of entity MAYFIELD GROUP HOLDINGS LIMITED ABN 57 010 597 672 We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act. Name of Director Lindsay Phillips Date of last notice 6 December 2023 Part 1 - Change of director’s relevant interests in securities 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. Direct or indirect interest Indirect Nature of indirect interest (including registered holder) 1. Nightingale Partners Pty Ltd 2. MJH Nightingale & Co Pty Ltd 3. Ironwood Investments Pty Ltd (shareholder and director of company) 21 March 2024 Note: Provide details of the circumstances giving rise to the relevant interest. Date of change No. of securities held prior to change 1. 40,812,608 2. 18,648 3. 735,883 Class Ordinary fully paid shares Number acquired Nil Number disposed 18,648 + See chapter 19 for defined terms. 01/01/2011 Appendix 3Y Page 1 each Appendix 3Y Change of Director’s Interest Notice Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation $11,994 No. of securities held after change 1. 40,812,608 2. 0 3. 735,883 Nature of change On market sale Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back Part 2 – Change of director’s interests in contracts 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. Detail of contract NA Nature of interest Name of registered holder (if issued securities) Date of change No. and class of securities to which interest related prior to change Note: Details are only required for a contract in relation to which the interest has changed Interest acquired Interest disposed Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation Interest after change Part 3 – +Closed period Were the interests in the securities or contracts detailed No above traded during a +closed period where prior written clearance was required? If so, was prior written clearance provided to allow the trade to proceed during this period? + See chapter 19 for defined terms. Appendix 3Y Page 2 01/01/2011 Appendix 3Y Change of Director’s Interest Notice If prior written clearance was provided, on what date was this provided? + See chapter 19 for defined terms. 01/01/2011 Appendix 3Y Page 3