MGX RESOURCES LIMITED — Director's Dealing 2025

Nov 16, 2025

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ASX ANNOUNCEMENT

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Mount Gibson Iron Limited

ABN 87 008 670 817

Level 1, 2 Kings Park Road West Perth 6005, Western Australia PO Box 55, West Perth WA 6872 Telephone: 61-8-9426-7500 Facsimile: 61-8-9485 2305 E-mail: admin@mgx.com.au

ASX Code : MGX

17 November 2025

Alternate Director Change

Mount Gibson Iron Limited (the Company) advises that Mr Lee Seng Hui’s appointment as alternate director for Chairman Brett Smith ended following Mr Smith’s election at the Company’s Annual General Meeting on 12 November 2025.

Mr Lee’s Appendix 3Z Final Director’s Interest Notice is attached.

Authorised by: For more information: Peter Kerr John Phaceas Chief Executive Officer Manager Investor & External Relations Mount Gibson Iron Limited +61-8-9426-7500 +61-8-9426-7500 +61-(0)411-449-621

www.mtgibsoniron.com.au

1

Appendix 3Z Final Director’s Interest Notice

Rule 3.19A.3

Appendix 3Z

Final 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 30/9/2001.

Introduced 30/9/2001.
Name of entity	MOUNT GIBSON IRON LIMITED
ABN	87 008 670 817

We (the entity) give ASX the following information under listing rule 3.19A.3 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of director	Lee Seng Hui
Date of last notice	7 October 2021
Date that director ceased to be director	12 November 2025

Part 1 – Director’s relevant interests in securities of which the director is the registered holder

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.

Number & class of securities

0

Part 2 – Director’s relevant interests in securities of which the director is not the registered holder

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.

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

	Name of holder & nature of interestNote: Provide details of the circumstances giving rise to therelevant interest	Name of holder & nature of interestNote: Provide details of the circumstances giving rise to therelevant interest	Number & class of securitiesMr. Lee is a trustee of The Lee and Lee Trust whichowns approximately 74.99% (inclusive of Mr. Lee’srnl intrt f th hr in Allid Gr	Number & class of securitiesMr. Lee is a trustee of The Lee and Lee Trust whichowns approximately 74.99% (inclusive of Mr. Lee’srnl intrt f th hr in Allid Gr	Number & class of securitiesMr. Lee is a trustee of The Lee and Lee Trust whichowns approximately 74.99% (inclusive of Mr. Lee’srnl intrt f th hr in Allid Gr
			pesoa eess) o e saes e oup“”
			Limited (AGL)	.
			Allied Properties(“APICL”) an i	Investments (1) Company Limitedndirect subsidiar of AGL owns
			,668,712,851 sh	y ,ares in APAC Resources Limited
			(“APAC”), reprethe total issued	senting approximately 46.76% ofshare capital of APAC.

• See chapter 19 for defined terms.

11/3/2002

Appendix 3Z Page 1

Appendix 3Z Final Director’s Interest Notice

Mr Lee is deemed to hold a relevant interest in 452,767,297 ordinary shares in MGI under section 608(3) of the Corporations Act.

Part 3 – Director’s interests in contracts

art 3 – Director’s interests in contracts
Detail of contract	N/A
Nature of interest	N/A
Name of registered holder(if issued securities)	N/A
No. and class of securities to whichinterest relates	N/A

• See chapter 19 for defined terms.

Appendix 3Z Page 2

11/3/2002