IMUGENE LIMITED — Capital/Financing Update 2026

Mar 18, 2026

Appendix 3B - Proposed issue of securities

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Update Summary

Entity name

IMUGENE LIMITED

Announcement Type

Update to previous announcement

Date of this announcement

19/3/2026

Reason for update to a previous announcement

The Company clarifies that any subscriptions will be scaled back at its discretion. The response to the scale back question under Item 4B should be Yes.

Refer to next page for full details of the announcement

Appendix 3B - Proposed issue of securities

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Appendix 3B - Proposed issue of securities

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Part 1 - Entity and announcement details

1.1 Name of +Entity

IMUGENE LIMITED

We (the entity named above) give ASX the following information about a proposed issue of +securities and, if ASX agrees to +quote any of the +securities (including any rights) on a +deferred settlement basis, we agree to the matters set out in Appendix 3B of the ASX Listing Rules.

If the +securities are being offered under a +disclosure document or +PDS and are intended to be quoted on ASX, we also apply for quotation of all of the +securities that may be issued under the +disclosure document or +PDS on the terms set out in Appendix 2A of the ASX Listing Rules (on the understanding that once the final number of +securities issued under the +disclosure document or +PDS is known, in accordance with Listing Rule 3.10.3C, we will complete and lodge with ASX an Appendix 2A online form notifying ASX of their issue and applying for their quotation).

1.2 Registered Number Type

Registration Number

ABN 99009179551

1.3 ASX issuer code

IMU

1.4 The announcement is

Update/amendment to previous announcement

1.4a Reason for update to a previous announcement

The Company clarifies that any subscriptions will be scaled back at its discretion. The response to the scale back question under Item 4B should be Yes.

1.4b Date of previous announcement to this update

19/3/2026

1.5 Date of this announcement

19/3/2026

1.6 The Proposed issue is:

An offer of +securities under a +securities purchase plan

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Appendix 3B - Proposed issue of securities

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Part 4 - Details of proposed offer under securities purchase plan

Part 4A - Conditions

4A.1 Do any external approvals need to be obtained or other conditions satisfied before the offer of +securities under the +securities purchase plan issue can proceed on an unconditional basis? Yes

4A.1a Conditions

Approval/Condition Date for determination Is the date estimated or ** Approval actual? received/condition met? +Security holder approval 23/4/2026 Actual

Comments

The SPP and new options will be subject to shareholder approval at an Extraordinary General Meeting of the Company expected to be held on 23 April 2026 (EGM).

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Appendix 3B - Proposed issue of securities

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Part 4B - Offer details

+Class or classes of +securities that will participate in the proposed issue and +class or classes of +securities proposed to be issued

ASX +security code and description

IMU : ORDINARY FULLY PAID

Will the proposed issue of this +security include an offer of attaching +securities? Yes

Details of +securities proposed to be issued

ASX +security code and description IMU : ORDINARY FULLY PAID

Maximum total number of those +securities that could be issued if all offers under the +securities purchase plan are accepted 44,444,444

Will the offer be conditional on applications for a minimum number of +securities being received or a minimum amount being raised (i.e. a minimum subscription condition)? No

Will the offer be conditional on applications for a maximum number of +securities being received or a maximum amount being raised (i.e. a maximum subscription condition)? No

Will individual security holders be required to accept the offer for a minimum number or value of +securities (i.e. a minimum acceptance condition)? Yes

Is the minimum acceptance unit based or dollar based? Dollar based ($)

Please enter the minimum acceptance value

$ 1,000

Will individual security holders be limited to accepting the offer for a maximum number or value of +securities (i.e. a maximum acceptance condition)? Yes

Is the maximum acceptance unit based or dollar based? Dollar based ($)

Please enter the maximum acceptance value

$ 30,000

Describe all the applicable parcels available for this offer in number of securities or dollar value

$1,000, $2500, $5000, $10000, $15000, $20000, $25000, $30000

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Appendix 3B - Proposed issue of securities

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Offer price details

Has the offer price been determined? Yes In what currency will the offer What is the offer price per be made? +security? AUD - Australian Dollar AUD 0.18000

Oversubscription & Scale back details

Will a scale back be applied if the offer is over-subscribed?

No

Will these +securities rank equally in all respects from their issue date with the existing issued +securities in that class? Yes

Attaching +Security

The proposed attaching security can only be of an 'Existing class' (additional +securities in a class that is already quoted or recorded by ASX)

New class

Attaching +Security - New class (+securities in a class that is not yet quoted or recorded by ASX)

Details of attaching +securities proposed to be issued

ISIN Code (if Issuer is a foreign company and +securities do not have +CDIs issued over them)

Have you received confirmation from ASX that the terms of the proposed +securities are appropriate and equitable under listing rule 6.1? Will the entity be seeking quotation of the 'new' class of +securities on ASX? ASX +security code New class-code to be confirmed +Security description Quoted Option Expiring 30 April 2027 EX $0.18 Yes No	Have you received confirmation from ASX that the terms of the proposed +securities are appropriate and equitable under listing rule 6.1? Will the entity be seeking quotation of the 'new' class of +securities on ASX? ASX +security code New class-code to be confirmed +Security description Quoted Option Expiring 30 April 2027 EX $0.18 Yes No
New class-code to be confirmed	Quoted Option Expiring 30 April 2027 EX $0.18

+Security type

Options

Offer ratio (ratio of attaching securities at which the new	+securities will be issued)
The quantity of attaching +securities to be issued	For a given quantity of the new +securities issued
1	1
What will be done with fractional entitlements?	Maximum total number of those +securities that could be
Fractions rounded down to the nearest whole number or fractions disregarded	issued if all offers under the +securities purchase plan are accepted 44,444,444
Offer price details
Has the offer price been determined?
Yes
In what currency will the offer be made?	What is the offer price per +security?
AUD - Australian Dollar	AUD 0.18000

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Appendix 3B - Proposed issue of securities

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Please confirm whether the offer of the attaching +securities is a separate offer to the offer pursuant to the +security purchase plan

Yes

Please confirm whether the attaching +securities are being offered under a +disclosure document or +PDS Yes

Oversubscription & Scale back details

Will a scale back be applied if the offer is over-subscribed? No

Will all the +securities issued in this class rank equally in all respects from their issue date? Yes

Options details

+Security currency

AUD - Australian Dollar

Exercise price Expiry date AUD 0.1800 30/4/2027

Details of the type of +security that will be issued if the option is exercised

Other

Description

If an option is exercised, the following securities will be issued:

(a) one fully paid ordinary share (ASX:IMU); and

(b) one Piggyback option with an exercise price of $0.30 and expiry date of 30 April 2029 (see details of these ataching securities below)

Please provide a URL link for a document lodged with ASX setting out the material terms of the +securities proposed to be issued or provide the information by separate announcement.

Please refer to the announcement today 11 March 2026 and the offer Prospectus to be lodged with the ASX Tuesday 17 March 2026.

Details of attaching +securities proposed to be issued

ISIN Code (if Issuer is a foreign company and +securities do not have +CDIs issued over them)

Have you received confirmation from ASX that the terms of the proposed +securities are appropriate and equitable under listing rule 6.1? Will the entity be seeking quotation of the 'new' class of +securities on ASX? ASX +security code New class-code to be confirmed +Security description Quoted Options Expiring 30 April 2029 EX $0.30 Yes No	Have you received confirmation from ASX that the terms of the proposed +securities are appropriate and equitable under listing rule 6.1? Will the entity be seeking quotation of the 'new' class of +securities on ASX? ASX +security code New class-code to be confirmed +Security description Quoted Options Expiring 30 April 2029 EX $0.30 Yes No
New class-code to be confirmed	Quoted Options Expiring 30 April 2029 EX $0.30

+Security type

Options

Offer ratio (ratio of attaching securities at which the new +securities will be issued)

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Appendix 3B - Proposed issue of securities

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The quantity of attaching +securities to be issued	For a given quantity of the new +securities issued
1	1
What will be done with fractional entitlements?	Maximum total number of those +securities that could be
Fractions rounded down to the nearest whole number or fractions disregarded	issued if all offers under the +securities purchase plan are accepted 44,444,444
Offer price details
Has the offer price been determined?
Yes
In what currency will the offer be made?	What is the offer price per +security?
AUD - Australian Dollar	AUD 0.30000
Please confirm whether the offer of the attaching +securities is a separate offer to the offer pursuant to the
+security purchase plan
Yes
Please confirm whether the attaching +securities are being offered under a +disclosure document or +PDS
Yes
Oversubscription & Scale back details
Will a scale back be applied if the offer is
over-subscribed?
No
Will all the +securities issued in this class rank equally	in all respects from their issue date?
Yes

Options details

+Security currency AUD - Australian Dollar Exercise price Expiry date AUD 0.3000 30/4/2029 Details of the type of +security that will be issued if the option is exercised IMU : ORDINARY FULLY PAID

Number of securities that will be issued if the option is exercised

44,444,444

Please provide a URL link for a document lodged with ASX setting out the material terms of the +securities proposed to be issued or provide the information by separate announcement.

Please refer to the announcement today 11 March 2026 and the offer Prospectus to be lodged with the ASX Tuesday 17 March 2026

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Appendix 3B - Proposed issue of securities

Part 4C - Timetable

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4C.1 Date of announcement of +security purchase plan

11/3/2026

4C.2 +Record date 10/3/2026

4C.3 Date on which offer documents will be made available to investors

17/3/2026

4C.4 Offer open date

20/3/2026

4C.5 Offer closing date

20/4/2026

4C.7 +Issue date and last day for entity to announce results of +security purchase plan offer

24/4/2026

Part 4D - Listing Rule requirements

4D.1 Does the offer under the +securities purchase plan meet all of the requirements of listing rule 7.2 exception 5 or do you have a waiver from those requirements? No 4D.1a Are any of the +securities proposed to be issued without +security holder approval using the entity's 15% placement capacity under listing rule 7.1? No 4D.1b Are any of the +securities proposed to be issued without +security holder approval using the entity's additional 10% placement capacity under listing rule 7.1A (if applicable)? No

Part 4E - Fees and expenses

4E.1 Will there be a lead manager or broker to the proposed offer? Yes 4E.1a Who is the lead manager/broker? E&P Capital Pty Ltd, Barrenjoey Markets Pty Ltd and Bell Potter Securities Ltd acted as joint lead managers 4E.1b What fee, commission or other consideration is payable to them for acting as lead manager/broker? A fee of 4% (plus GST) covering the SPP shortfall commitments

4E.2 Is the proposed offer to be underwritten? No 4E.3 Will brokers who lodge acceptances or renunciations on behalf of eligible +security holders be paid a handling fee or commission? No 4E.4 Details of any other material fees or costs to be incurred by the entity in connection with the proposed offer

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Appendix 3B - Proposed issue of securities

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Part 4F - Further Information

4F.01 The purpose(s) for which the entity intends to use the cash raised by the proposed issue

Ongoing development of azer-cel through the expansion of Cohort 2 and the new Cohort 3 (BTKi combination) of its Phase 1b trial, extending the funding runway into Q420261 and general administrative and working capital.

4F.1 Will the entity be changing its dividend/distribution policy if the proposed offer is successful? No

4F.2 Countries in which the entity has +security holders who will not be eligible to accept the proposed offer

Registered holders outside of Australia and New Zealand are excluded for the SPP

4F.3 URL on the entity's website where investors can download information about the proposed offer

https://imugene.com/investors/asx-announcements/

4F.4 Any other information the entity wishes to provide about the proposed offer

Appendix 3B - Proposed issue of securities

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