Announcement PDF Appendix 3H - Notification of cessation of securities Appendix 3H - Notification of cessation of securities 1 / 4 Announcement Summary Entity name IMMURON LIMITED Announcement Type New announcement Date of this announcement Monday June 29, 2026 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 IMC ORDINARY FULLY PAID 3,805,528 Other 29/06/2026 Refer to next page for full details of the announcement Appendix 3H - Notification of cessation of securities Appendix 3H - Notification of cessation of securities 2 / 4 Part 1 - Announcement Details 1.1 Name of +Entity IMMURON LIMITED We (the entity named above) provide the following information about our issued capital. 1.2 Registered Number Type ACN Registration Number 063114045 1.3 ASX issuer code IMC 1.4 The announcement is 1.5 Date of this announcement 29/6/2026 New announcement Appendix 3H - Notification of cessation of securities Appendix 3H - Notification of cessation of securities 3 / 4 Part 2 - Details of +equity securities or +debt securities that have ceased ASX +Security Code and Description IMC : ORDINARY FULLY PAID Quoted +equity securities or +debt securities that have ceased Number of securities that have ceased 3,805,528 Reason for cessation Other Please provide additional details Shares are being cancelled pursuant to the buy-back of unmarketable parcels. Date of cessation 29/6/2026 Is the entity paying any consideration for the cessation? In what currency is the consideration being paid? AUD - Australian Dollar Consideration amount per +security paid by the entity for the cessation AUD 0.032000000000 Any other information the entity wishes to notify to ASX about the cessation? Shares are being cancelled pursuant to the buy-back of unmarketable parcels, as announced on the ASX on 23 June 2026. The announcement can be found here: https://announcements.asx.com.au/asxpdf/20260623/pdf/070wzn623b8hhf. pdf Yes Appendix 3H - Notification of cessation of securities Appendix 3H - Notification of cessation of securities 4 / 4 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 Total number of +securities on issue IMC : ORDINARY FULLY PAID 322,848,081 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 IMCAE : PERFORMANCE RIGHTS 3,767,492 IMCAI : OPTION EXPIRING VARIOUS DATES EX VARIOUS PRICES 8,000,000 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.