Capstone Copper Corp. — Proxy Solicitation & Information Statement 2025

Mar 21, 2025

CAPSTONE COPPER

Capstone Copper Corp.

ARBN 673 751 490

Need assistance?

Phone:

1300 850 505 (within Australia)

+61 3 9415 4000 (outside Australia)

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Online:

www.investorcentre.com/contact

YOUR VOTE IS IMPORTANT

For your vote to be effective it must be received by 11:00am (AEST) on Wednesday, 30 April 2025.

CDI Voting Instruction Form

How to Vote on Items of Business

Each CHESS Depositary Interest (CDI) is equivalent to one share of Company Common Stock, so that every 1 (one) CDI registered in your name on Tuesday, 11 March 2025 entitles you to one vote.

You can vote by completing, signing and returning your CDI Voting Instruction Form. This form gives your voting instructions to CHESS Depositary Nominees Pty Ltd, which will vote the underlying shares on your behalf. You need to return the form no later than the time and date shown above to give CHESS Depositary Nominees Pty Ltd enough time to tabulate all CHESS Depositary Interest votes and to vote on the underlying shares.

SIGNING INSTRUCTIONS FOR POSTAL FORMS

Individual: Where the holding is in one name, the securityholder must sign.

Joint Holding: Where the holding is in more than one name, all of the securityholders should sign.

Power of Attorney: If you have not already lodged the Power of Attorney with the Australian registry, please attach a certified photocopy of the Power of Attorney to this form when you return it.

Companies: Only duly authorised officer/s can sign on behalf of a company. Please sign in the boxes provided, which state the office held by the signatory, ie Sole Director, Sole Company Secretary or Director and Company Secretary. Delete titles as applicable.

Lodge your Form:

Online:

Lodge your vote online at www.investorvote.com.au using your secure access information or use your mobile device to scan the personalised QR code.

Control Number: 184784

SRN/HIN:

By Mail:

Computershare Investor Services Pty Limited
GPO Box 242
Melbourne VIC 3001
Australia

By Fax:

1800 783 447 within Australia or
+61 3 9473 2555 outside Australia

PLEASE NOTE: For security reasons it is important that you keep your SRN/HIN confidential.

You may elect to receive meeting-related documents, or request a particular one, in electronic or physical form and may elect not to receive annual financial statements. To do so, contact Computershare.

316369_0_COSMOS_Sample_Proxy/000001/000002/1

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☐ Change of address. If incorrect, mark this box and make the correction in the space to the left. Securityholders sponsored by a broker (reference number commences with 'X') should advise your broker of any changes.

CDI Voting Instruction Form

Please mark ☐ to indicate your directions

Step 1 CHESS Depositary Nominees Pty Ltd will vote as directed

Voting Instructions to CHESS Depositary Nominees Pty Ltd

I/We being a holder of CHESS Depositary Interests of Capstone Copper Corp. hereby direct CHESS Depositary Nominees Pty Ltd to vote the shares underlying my/our holding at the Annual General Meeting of Capstone Copper Corp. to be held at 510 West Georgia Street, Suite 2100, Vancouver, British Columbia on Friday, 2 May 2025 at 11:00am (Pacific Time) and at any adjournment or postponement of that meeting.

By execution of this CDI Voting Form the undersigned hereby authorises CHESS Depositary Nominees Pty Ltd to appoint such proxies or their substitutes to vote in their discretion on such business as may properly come before the meeting.

Step 2 The Board of Directors recommends voting FOR each proposal.

1.	Number of Directors	For	Against
	To set the number of Directors at eight (8).	☐	☐
2.	Election of Directors	For	Withhold
---	---	---	---
01	Alison Baker	☐	☐
02	Gordon Bell	☐	☐
03	Richard Coleman	☐	☐
04	Anne Giardini	☐	☐
05	John MacKenzie	☐	☐
06	Cashel Meagher	☐	☐
07	Peter Meredith	☐	☐
08	Patricia Palacios	☐	☐
3.	Appointment of Auditors	For	Withhold
---	---	---	---
	Appointment of Deloitte LLP as Auditors of the Corporation for the ensuing year and authorizing the Directors to fix their remuneration.	☐	☐
4.	Say on Pay	For	Against
---	---	---	---
	Passing an advisory vote on the Corporation's approach to executive compensation, as more particularly described in the accompanying Information Circular.	☐	☐

Step 3 Signature of Securityholder(s) This section must be completed.

CSC

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