MARIMACA COPPER CORP. — Capital/Financing Update 2026

Apr 9, 2026

Appendix 4A - Statement of CDIs on issue

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Part 1 - Entity and announcement details

1.1 Name of +Entity

MARIMACA COPPER CORP.

1.2 Registered Number Type

ARBN

Registration Number 683017094

1.3 ASX issuer code

MC2

1.4 The announcement is

New announcement

1.5 Date of this announcement

10/4/2026

Appendix 4A - Statement of CDIs on issue

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Appendix 4A - Statement of CDIs on issue

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Part 2 - Details of +CDIs and other +securities on issue

2.1 Statement for month and year

March-2026

2.2a Number and class of all +CDIs issued over quoted +securities

ASX Security Code and Description +CDI Ratio MC2 : CHESS DEPOSITARY INTERESTS 1:1 1:1 Total number of +CDIs issued over Total number of +CDIs issued over Net Difference (A-B) quoted +securities at end of quoted +securities at end of previous -1,547,789 statement month (A): month (B): 47,844,616 49,392,405

Reason for change:

Net transfers of securities between CDIs and

Ordinary share

TSX

as quoted / held on

If the total number of +CDIs issued over quoted +securities at the end of the statement month, is greater than the total number of +CDIs issued over quoted +securities for which the entity has previously paid an initial listing fee or an additional listing fee under Table 1A and 1C of Guidance Note 15A, the entity hereby applies for +quotation of the relevant securities

and agrees to the matters set out in Appendix 2A of the ASX Listing Rules.

2.2b Number and class of all +securities on issue over which +CDIs have not been issued

ASX Security Code and Description

MC2AA : COMMON SHARES

Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) 1,649,393 85,976,362 84,326,969

Reason for change:

Transfer of securities between CDIs and common shares and option exercise.

ASX Security Code and Description

MC2AD : OPTION EXPIRING 25-MAR-2026 EX CAD 4.60

Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) -200,000 0 200,000

Reason for change:

Exercise of 200,000 options via the Company's cashless exercise facility pursuant to the Stock Options Plan, leading to the issue of 101,604 common shares and cancellation of 98,396 options.

ASX Security Code and Description

MC2AE : OPTION EXPIRING 06-MAY-2026 EX CAD 5.00

Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) 0 1,855,000 1,855,000

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Appendix 4A - Statement of CDIs on issue

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ASX Security Code and Description

MC2AG : OPTION EXPIRING 23-DEC-2026 EX CAD 3.69 Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) 0 820,000 820,000 ASX Security Code and Description MC2AH : OPTION EXPIRING 19-MAY-2028 EX CAD 4.00 Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) 0 425,000 425,000 ASX Security Code and Description MC2AI : OPTION EXPIRING 14-NOV-2028 EX CAD 3.40 Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) 0 200,000 200,000 ASX Security Code and Description MC2AL : RESTRICTED SHARE UNITS Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) 964,769 3,579,484 2,614,715

Reason for change:

Issue of Restricted Share Units on 30 March 2026 to Directors and management.

ASX Security Code and Description

MC2AM : OPTION EXPIRING 30-MAR-2031 EX CAD 7.93

Total number of +securities at end of Total number of +securities at end of Net Difference (A-B) statement month (A) previous month (B) 0 100,000 100,000

Appendix 4A - Statement of CDIs on issue

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