Announcement PDF Appendix 3H - Notification of cessation of securities Announcement Summary Entity name ALTERITY THERAPEUTICS LIMITED Announcement Type New announcement Date of this announcement Monday June 30, 2025 Details of +securities that have ceased ASX +security code Security description Number of +securities that have ceased The +securities have ceased due to Date of cessation ATHAAE OPTION EXPIRING 29-NOV-2026 EX $0.0375 4,250,000 Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied 30/06/2025 ATHAAG OPTION EXPIRING 29-NOV-2026 EX $0.0238 400,000 Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied 30/06/2025 Refer to next page for full details of the announcement Appendix 3H - Notification of cessation of securities 1/4 Appendix 3H - Notification of cessation of securities Part 1 - Announcement Details 1.1 Name of +Entity ALTERITY THERAPEUTICS LIMITED We (the entity named above) provide the following information about our issued capital. 1.2 Registered Number Type Registration Number ABN 37080699065 1.3 ASX issuer code ATH 1.4 The announcement is New announcement 1.5 Date of this announcement 30/6/2025 Appendix 3H - Notification of cessation of securities 2/4 Appendix 3H - Notification of cessation of securities Part 2 - Details of +equity securities or +debt securities that have ceased ASX +Security Code and Description ATHAAE : OPTION EXPIRING 29-NOV-2026 EX $0.0375 Unquoted +equity securities that have ceased Number of securities that have ceased 4,250,000 Reason for cessation Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied Date of cessation 30/6/2025 Is the entity paying any consideration for the cessation? No Any other information the entity wishes to notify to ASX about the cessation? Lapse due to employee resignation. ASX +Security Code and Description ATHAAG : OPTION EXPIRING 29-NOV-2026 EX $0.0238 Unquoted +equity securities that have ceased Number of securities that have ceased 400,000 Reason for cessation Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied Date of cessation 30/6/2025 Is the entity paying any consideration for the cessation? No Any other information the entity wishes to notify to ASX about the cessation? Lapse due to contractor cessation. Appendix 3H - Notification of cessation of securities 3/4 Appendix 3H - Notification of cessation of securities Part 3 - Issued capital following changes Following the cessation of the +securities the subject of this notification, the issued capital of the entity will comprise: The figures in parts 3.1 and 3.2 below are automatically generated and may not reflect the entity's current issued capital if other Appendix 2A, Appendix 3G or Appendix 3H forms are currently with ASX for processing. 3.1 Quoted +equity securities and +debt securities (total number of each +class of +securities quoted on ASX) ASX +security code and description ATH : ORDINARY FULLY PAID Total number of +securities on issue 9,127,370,686 ATHO : OPTION EXPIRING 31-AUG-2026 932,611,269 ATHOA : OPTION EXPIRING 26-FEB-2027 1,222,300,911 3.2 Unquoted +equity securities (total number of each +class of +equity securities issued but not quoted on ASX) ASX +security code and description Total number of +securities on issue ATHAAE : OPTION EXPIRING 29-NOV-2026 EX $0.0375 10,000,000 ATHAAG : OPTION EXPIRING 29-NOV-2026 EX $0.0238 11,500,000 ATHAAB : OPTION EXPIRING 17-SEP-2025 EX $0.09 35,000,000 ATHAAK : OPTION EXPIRING 30-DEC-2027 EX $0.01 170,000,000 ATHAAH : OPTION EXPIRING 19-DEC-2026 EX $0.0105 8,000,000 ATHAB : OPTION EXPIRING 13-MAR-2029 EX US$0.0031 62,500,000 ATHAA : OPTION EXPIRING 13-MAR-2029 EX $0.004 20,166,667 ATHAC : OPTION EXPIRING 21-MAR-2029 EX US$0.003 120,000,000 ATHAAD : OPTION EXPIRING 06-JAN-2026 EX $0.032 91,392,720 Note: the figures stated in the tables above are used to calculate the total market capitalisation of the entity published by ASX from time to time. The table will not include those classes of +securities that have ceased or lapsed in their entirety in ASX records before the announcement date described in Q1.5, even if the entity has advised ASX of a change to that class of +security in Part 2 of this form. Appendix 3H - Notification of cessation of securities 4/4