FRONTIER ENERGY LIMITED — Director's Dealing 2026

May 10, 2026

Appendix 3Y

Change of Director's Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director's Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX's property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity: Frontier Energy Limited
ABN: 139 522 553

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Jamie Cullen
Date of last notice	18 March 2026

Part 1 - Change of director's relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of "notifiable interest of a director" should be disclosed in this part.

| Direct or indirect interest | Indirect (Shares)
Direct (Options) |
| --- | --- |
| Nature of indirect interest (including registered holder) | Kahala Holdings Pty Ltd |
| Note: Provide details of the circumstances giving rise to the relevant interest | |
| Date of change | 5 May 2026 |
| No. of securities held prior to change | Shares:
1,000,000 fully paid ordinary shares
Options:
1,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
3,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
5000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
6,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
5,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029. |

• See chapter 19 for defined terms.

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Appendix 3Y

Change of Director's Interest Notice

Class	Shares
Number acquired	300,000
Number disposed	N/A
Value/Consideration
Note: If consideration is non-cash, provide details and estimated valuation	$81,446
No. of securities held after change	Shares:
1,300,000 fully paid ordinary shares
Options:
1,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
3,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
5000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
6,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
5,000,000 zero-exercise price options to acquire Frontier shares, expiring 2 March 2029.
Nature of change
Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	On-market trade.

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	N/A
Nature of interest	N/A
Name of registered holder (if issued securities)	N/A
Date of change	N/A

• See chapter 19 for defined terms.

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01/01/2011

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Appendix 3Y

Change of Director's Interest Notice

| No. and class of securities to which interest related prior to change
Note: Details are only required for a contract in relation to which the interest has changed | N/A |
| --- | --- |
| Interest acquired | N/A |
| Interest disposed | N/A |
| Value/Consideration
Note: If consideration is non-cash, provide details and an estimated valuation | N/A |
| Interest after change | N/A |

Part 3 – $^+$ Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior written clearance provided to allow the trade to proceed during this period?	N/A
If prior written clearance was provided, on what date was this provided?	N/A

• See chapter 19 for defined terms.

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