MARIMACA COPPER CORP. — Director's Dealing 2025

May 19, 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	Marimaca Copper Corp.
ARBN	683 017 094

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 Hayden Locke

Date of last notice 7 April 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
Nature of indirect interest(including registered holder)Note: Provide details of the circumstances giving rise to the relevantinterest.
Date of change	24 April 2025
No. of securities held prior to change	32,900 ordinary shares611,554 unquoted restricted share units(RSUs)200,000 unquoted options exercisable atC$1.25 each on or before April 21, 2025200,000 unquoted options exercisable atC$3.20 each on or before September 25,2025280,000 unquoted options exercisable atC$5.00 each on or before May 6, 2026450,000 unquoted options exercisable atC$3.69 each on or before December 23,2026150,000 unquoted options exercisable atC4.00 each on or before May 19, 2028

• See chapter 19 for defined terms.

01/01/2011

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Appendix 3Y Change of Director’s Interest Notice

Class	RSUs
Number acquired	143,947 RSUs
Number disposed	Lapseof200,000unquotedoptionsexercisable at C$1.25 each on or before
Value/ConsiderationNote: If consideration is non-cash, provide details and estimatedvaluation	Nil
No. of securities held after change	32,900 ordinary shares755,501 RSUs200,000 unquoted options exercisable atC$3.20 each on or before September 25,2025280,000 unquoted options exercisable atC$5.00 each on or before May 6, 2026450,000 unquoted options exercisable atC$3.69 each on or before December 23,2026150,000 unquoted options exercisable atC4.00 each on or before May 19, 2028
Nature of changeExample: on-market trade, off-market trade, exercise of options, issueof securities under dividend reinvestment plan, participation in buy-back	Issue of RSUs under the Omnibus IncentivePlan.Expiry of options.

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
Name of registered holder(if issued securities)
Date of change
No. and class of securities to whichinterest related prior to changeNote: Details are only required for a contract inrelation to which the interest has changed

• See chapter 19 for defined terms.

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Appendix 3Y Change of Director’s Interest Notice

Interest acquired Interest disposed Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation Interest after change

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? If so, was prior written clearance provided to allow the trade to proceed during this period? If prior written clearance was provided, on what date was this provided?

• See chapter 19 for defined terms.

01/01/2011

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