Immuron (NASDAQ: IMRN) reports expiry of 1.43M options and updated capital
Rhea-AI Filing Summary
Immuron Limited filed a Form 6-K noting the expiry of a tranche of options listed on the ASX. On 18 June 2026, 1,430,000 IMCAI options expiring on various dates and at various exercise prices ceased after expiring without being exercised or converted, and no consideration was paid for the cessation.
Following this lapse, Immuron reports issued capital of 326,653,609 ordinary fully paid shares, along with 3,767,492 performance rights and 8,000,000 IMCAI options still on issue, as recorded in the ASX-generated tables.
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Key Figures
Key Terms
Appendix 3H regulatory
Notification of Cessation of Securities regulatory
performance rights financial
unquoted +equity securities financial
expiry of option financial
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 UNDER
THE SECURITIES EXCHANGE ACT OF 1934
For the Month of June 2026
Commission File Number: 001-38104
IMMURON LIMITED
(Name of Registrant)
Level 3, 62 Lygon Street, Carlton South, Victoria, 3053, Australia
(Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F ☒ Form 40-F ☐
Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes ☐ No ☒
If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-
IMMURON LIMITED
EXPLANATORY NOTE
Immuron Limited (the “Company”) published an announcement (the “Public Notices”) to the Australian Securities Exchange on June 18, 2026 titled:
| - | Appendix 3H – Notification of Cessation of Securities |
A copy of the Public Notice is attached as an exhibit to this report on Form 6-K.
This report on Form 6-K (including the exhibit hereto) shall not be deemed to be “filed” for purposes of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.
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EXHIBITS
| Exhibit Number |
Description | |
| 99.1 | Appendix 3H – Notification of Cessation of Securities |
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SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| IMMURON LIMITED | ||
| Date: June 18, 2026 | By: | /s/ Olga Smejkalova |
| Olga Smejkalova | ||
| Company Secretary | ||
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Exhibit 99.1
 |
Appendix 3H - Notification of cessation of securities |
Announcement Summary
Entity name
IMMURON LIMITED
Announcement Type
New announcement
Date of this announcement
Thursday June 18, 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 | ||||||
| IMCAI | OPTION EXPIRING VARIOUS DATES EX VARIOUS PRICES | 1,430,000 | Expiry of option or other convertible security without exercise or conversion | 18/06/2026 | ||||||
Refer to next page for full details of the announcement
|
Appendix 3H - Notification of cessation of securities |
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 | Registration Number | |
| ABN | 80063114045 |
| 1.3 | ASX issuer code |
IMC
| 1.4 | The announcement is |
New announcement
| 1.5 | Date of this announcement |
18/6/2026
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|
Appendix 3H - Notification of cessation of securities |
Part 2 - Details of +equity securities or +debt securities that have ceased
ASX +Security Code and Description
IMCAI : OPTION EXPIRING VARIOUS DATES EX VARIOUS PRICES
Unquoted +equity securities that have ceased
Number of securities that have ceased
1,430,000
Reason for cessation
Expiry of option or other convertible security without exercise or conversion
| Date of cessation | Is the entity paying any consideration for the cessation? | ||
| 18/6/2026 | No |
Any other information the entity wishes to notify to ASX about the cessation?
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|
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 | Total number of +securities on issue | |||
| IMC : ORDINARY FULLY PAID | 326,653,609 | |||
| 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.
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