MARIMACA COPPER CORP. — Director's Dealing 2025

Apr 6, 2025

Appendix 3X Initial Director’s Interest Notice

Rule 3.19A.1

Appendix 3X

Initial 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.

Name of entity Marimaca Copper Corp. ARBN 683 017 094

We (the entity) give ASX the following information under listing rule 3.19A.1 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Timothy Petterson
Date of appointment	1 November 2018

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

20,597 ordinary shares 157,500 restricted share units (RSUs)

35,000 unquoted options exercisable at C$1.25 each on or before April 21, 2025 200,000 unquoted options exercisable at C$3.20 each on or before September 25, 2025 280,000 unquoted options exercisable at C$5.00 each on or before May 6, 2026

• See chapter 19 for defined terms.

11/3/2002

Appendix 3X Page 1

Appendix 3X Initial Director’s Interest Notice

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

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 Number & class of Securities interest 52,400 ordinary shares J. Petterson (Spouse of Mr. Petterson)

Part 3 – 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
No. and class of securities to whichinterest relates	N/A

• See chapter 19 for defined terms.

Appendix 3X Page 2

11/3/2002