Capstone Copper Corp. — Share Issue/Capital Change 2026

Jun 3, 2026

Appendix 4A - Statement of CDIs on issue

Part 1 - Entity and announcement details

1.1 Name of +Entity
CAPSTONE COPPER CORP.

1.2 Registered Number Type
ARBN

Registration Number
673751490

1.3 ASX issuer code
CSC

1.4 The announcement is
New announcement

1.5 Date of this announcement
3/6/2026

Appendix 4A - Statement of CDIs on issue
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Appendix 4A - Statement of CDIs on issue

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

2.1 Statement for month and year

May-2026

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

ASX Security Code and Description	+CDI Ratio
CSC : CDI 1:1 FOREIGN EXEMPT TSX	1:1
Total number of +CDIs issued over quoted +securities at end of statement month (A):	Total number of +CDIs issued over quoted +securities at end of previous month (B):
204,594,624	184,616,745
Net Difference (A-B)
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19,977,879

Reason for change:

Net transfers of securities between CDIs and

Common stock

as quoted / held on

TSX

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	CSCAD : COMMON SHARES
Total number of +securities at end of statement month (A)	Total number of +securities at end of previous month (B)
763,895,414	763,791,402
Net Difference (A-B)
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104,012

Reason for change:

Exercise of Stock Option and Treasury Share Units

ASX Security Code and Description

CSCAA : STOCK OPTIONS

Total number of +securities at end of statement month (A)	Total number of +securities at end of previous month (B)	Net Difference (A-B)
3,950,702	4,038,888	-88,186

Reason for change:

Exercise and cancellation of stock options

ASX Security Code and Description

CSCAB : TREASURY SHARE UNITS

Total number of +securities at end of statement month (A)	Total number of +securities at end of previous month (B)	Net Difference (A-B)
5,006,332	5,053,355	-47,023

Appendix 4A - Statement of CDIs on issue

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Appendix 4A - Statement of CDIs on issue

Reason for change:

Exercise and cancellation of share units

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