Exhibit 99.1

Appendix 2A - Application for quotation of securities

Announcement Summary

Entity name

IMMURON LIMITED

Announcement Type

New announcement

Date of this announcement

Sunday July 20, 2025

The +securities to be quoted are:

+Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B

Total number of +securities to be quoted

ASX +security code	Security description	Number of +securities to be quoted		Issue date
IMC	ORDINARY FULLY PAID		32,909,640	21/07/2025

Refer to next page for full details of the announcement

Appendix 2A - Application for quotation of securities 1 / 5

Appendix 2A - Application for quotation of securities

Part 1 - Entity and announcement details

1.1 Name of entity

IMMURON LIMITED

We (the entity named above) apply for +quotation of the following +securities and agree to the matters set out in Appendix 2A of the ASX Listing Rules.

1.2 Registered number type	Registration number
ACN	063114045

1.3 ASX issuer code

IMC

1.4 The announcement is

New announcement

1.5 Date of this announcement

20/7/2025

Appendix 2A - Application for quotation of securities 2 / 5

Appendix 2A - Application for quotation of securities

Part 2 - Type of Issue

2.1 The +securities to be quoted are:

+Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B

Previous Appendix 3B details:

Announcement Date and Time	Announcement Title	Selected Appendix 3B to submit quotation request
18-Jul-2025 12:08	New - Proposed issue of securities - IMC	A placement or other type of issue

2.3a.2 Are there any further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B?

No

Appendix 2A - Application for quotation of securities 3 / 5

Appendix 2A - Application for quotation of securities

Part 3A - number and type of +securities to be quoted where issue has previously been notified to ASX in an Appendix 3B

Placement Details

ASX +security code and description

IMC : ORDINARY FULLY PAID

Issue date

21/7/2025

Issue details

Number of +securities to be quoted

32,909,640

Are the +securities being issued for a cash consideration?

Yes

In what currency is the cash consideration being paid?	What is the issue price per +security?
AUD - Australian Dollar	AUD 0.08240000

Any other information the entity wishes to provide about the +securities to be quoted

The shares were purchased by US investors from the US at the market (ATM) facility

Appendix 2A - Application for quotation of securities 4 / 5

Appendix 2A - Application for quotation of securities

Part 4 - Issued capital following quotation

Following the quotation of the +securities the subject of this application, the issued capital of the entity will comprise:

The figures in parts 4.1 and 4.2 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.

4.1 Quoted +securities (total number of each +class of +securities quoted on ASX following the +quotation of the +securities subject of this application)

ASX +security code and description	Total number of +securities on issue
IMC : ORDINARY FULLY PAID		268,219,973

4.2 Unquoted +securities (total number of each +class of +securities issued but not quoted on ASX)

ASX +security code and description	Total number of +securities on issue
IMCAE : PERFORMANCE RIGHTS		5,463,161
IMCAI : OPTION EXPIRING VARIOUS DATES EX VARIOUS PRICES		5,930,000
IMCAM : OPTION EXPIRING 21-JUL-2025 EX USD$0.5859375		2,560,000

Appendix 2A - Application for quotation of securities 5 / 5