GREAT DIVIDE MINING LTD — Director's Dealing 2025

Dec 29, 2025

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 GREAT DIVIDE MINING LIMITED ABN 47 655 868 803

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	Adam Arkinstall
Date of last notice	23 December 2025

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		Direct and Indirect
Nature of indirect interest(including registered holder)Note: Provide details of the circumstances giving rise to the relevant interest.		AG Investment Fund Pty LtdMr Arkinstall is a controller of this entity andhas a beneficial interest in the securities itholds.Archie ArkinstallArchie is Mr Arkinstall’s son. Mr Arkinstallconsiders he may have the ability to exercisecontrol over this holding given Archie is aminor.Mr Adam John Arkinstall & Mr Ian JohnArkinstall Mr Arkinstall is a joint registered holder andhas a beneficial interest in the securities held.
Date of change		29 and 30 December 2025

• See chapter 19 for defined terms.

Appendix 3Y Change of Director’s Interest Notice

No. of securities held prior to change		Adam Arkinstall251,883 Fully Paid Ordinary SharesAG Investment Fund Pty Ltd2,132,218 Fully Paid Ordinary Shares610,000 Unlisted Options exercisable at $0.40expiring 23 August 2026282,218 Unlisted Options exercisable at $0.50expiringArchie Arkinstall10,000 Fully Paid Ordinary Shares2,000 Unlisted Options exercisable at $0.40expiring 22 December 2027Mr Adam John Arkinstall & Mr Ian JohnArkinstall 263,219FullyPaid OrdinaryShares
Class		Fully Paid Ordinary Shares
Number acquired		15,939 Fully Paid Ordinary Shares
Number disposed(result from share consolidation)		Nil
Value/ConsiderationNote: Ifconsideration is non-cash, provide details and estimated valuation		$4,861
No. of securities held after change		Adam Arkinstall267,822 Fully Paid Ordinary SharesAG Investment Fund Pty Ltd2,132,218 Fully Paid Ordinary Shares610,000 Unlisted Options exercisable at $0.40expiring 23 August 2026282,218 Unlisted Options exercisable at $0.50expiringArchie Arkinstall10,000 Fully Paid Ordinary Shares2,000 Unlisted Options exercisable at $0.40expiring 22 December 2027Mr Adam John Arkinstall & Mr Ian JohnArkinstall 263,219 Fully Paid Ordinary Shares
Nature of changeExample: on-market trade, off-market trade, exercise of options, issue ofsecurities under dividend reinvestment plan, participation in buy-back		On-market purchase

• See chapter 19 for defined terms.

Appendix 3Y Change of Director’s Interest Notice

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	Not applicable
Nature of interest	Not applicable
Name of registered holder(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to whichinterest related prior to changeNote: Details are only required for a contract in relation towhich the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/ConsiderationNote: If consideration is non-cash, provide details and anestimated valuation	Not applicable
Interest after change	Not applicable

Part 3 –[+] Closed period

art 3 –+Closed period
Were the interests in the securities or contracts detailedabove traded during a+closed period where prior writtenclearance was required?	No
If so, was prior written clearance provided to allow thetrade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date wasthis provided?	Not applicable

Rule 3.19A.2

• See chapter 19 for defined terms.