CHALICE MINING LIMITED — Director's Dealing 2025

Apr 29, 2025

ASX Announcement

30 April 2025

Appendix 3Y – Alex Dorsch

In accordance with ASX Listing Rule 3.19A.2, Chalice Mining Limited (“Chalice”, ASX: CHN) provides the attached Appendix 3Y for Managing Director and Chief Executive Officer, Alex Dorsch.

To fund tax liabilities arising from the vesting of Chalice performance rights in prior years, Lunar Co Pty Ltd as trustee for the H & A Dorsch Family Trust (“Lunar”), a company controlled by Mr Dorsch, has entered into a loan facility (“Loan”) with Equities First Holdings LLC (Equities First). Pursuant to the terms of the Loan, Lunar has transferred 2,000,000 Chalice shares (“Secured Shares”) to Equities First by way of security. The term of the Loan is two years, and the Secured Shares will be returned to Lunar on repayment of the amount owing in accordance with the terms of the Loan.

Importantly, under the Loan terms, Equities First can only vote the Secured Shares as directed by Mr Dorsch and Lunar retains a relevant interest in the Secured Shares. Equities First is also prohibited from engaging in short-selling or lending of the Secured Shares.

As at the date of this announcement, the Secured Shares represent approximately 0.51% of Chalice’s total issued share capital and approximately 33% of Mr Dorsch’s total Chalice shareholding.

Authorised for release by the Board of Directors of Chalice Mining Limited.

For further information, please visit www.chalicemining.com, or contact:

Corporate Enquiries Media Enquiries Follow our communications Ben Goldbloom Nicholas Read LinkedIn: chalice-mining GM Corporate Development Principal and Managing Director Twitter: @chalicemining Chalice Mining Limited Read Corporate Investor Relations +61 8 9322 3960 +61 8 9388 1474 info@chalicemining.com info@readcorporate.com.au

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Registered Office ABN 47 116 648 956 Level 3, 46 Colin Street, West Perth WA 6005, Australia PO Box 428, West Perth WA 6872

info@chalicemining.com www.chalicemining.com

@chalicemining chalice-mining

T: +61 8 9322 3960

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	Chalice Mining Limited
ABN	47 116 648 956

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	Alexander Carl Dorsch
Date of last notice	22 November 2024

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	Indirect
Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest.	1) Lunar Co Pty Ltd as trustee for The H & A Dorsch Family Trust. Mr Dorsch is a beneficiary of The H & A Dorsch Family Trust and a director of its trustee. 2) Australian Super Pty Ltd as trustee of Australian Super - Alex Dorsch superannuation account
Date of change	24 April 2025

• See chapter 19 for defined terms.

01/01/2011 Appendix 3Y Page 1

Appendix 3Y Change of Director’s Interest Notice

No. of securities held prior to change	Indirect Interest 1) Lunar Co Pty Ltd as trustee for The H & A Dorsch Family Trust Ordinary Shares 5,949,447 fully paid ordinary shares Performance Rights • 228,938 – vesting 30 June 2025, expiring 30 June 2027. • 154,574 – vesting 30 June 2026, expiring 30 June 2028. • 696,458 – vesting 30 June 2027, expiring 30 June 2030 Each Performance Right is convertible into one fully paid ordinary share for nil cash consideration subject to the satisfaction of performance and service vesting conditions. 2) Australian Super Pty Ltd as trustee of Australian Super - Alex Dorsch’s superannuation account Ordinary Shares 50,000 fully paid ordinary shares
Class	Fully paid ordinary shares.
Number acquired	Nil
Number disposed	Nil
Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation	Refer Part 2 below.

• See chapter 19 for defined terms.

Appendix 3Y Page 2

01/01/2011

Appendix 3Y Change of Director’s Interest Notice

No. of securities held after change

Indirect Interest 1) Lunar Co Pty Ltd as trustee for The H & A Dorsch Family Trust Ordinary Shares 3,949,447 fully paid ordinary shares Performance Rights • 228,938 – vesting 30 June 2025, expiring 30 June 2027. • 154,574 – vesting 30 June 2026, expiring 30 June 2028. • 696,458 – vesting 30 June 2027, expiring 30 June 2030 Each Performance Right is convertible into one fully paid ordinary share for nil cash consideration subject to the satisfaction of performance and service vesting conditions. 2) Australian Super Pty Ltd as trustee of Australian Super - Alex Dorsch’s superannuation account Ordinary Shares 50,000 fully paid ordinary shares 3) HSBC Custody Nominees (Australia) Ltd (as custodian for Equities First Holdings LLC) as security for margin loan facility described in Part 2 below Ordinary Shares 2,000,000 fully paid ordinary shares

Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back

Off-market transfer of 2,000,000 fully paid ordinary shares to HSBC Custody Nominees (Australia) Ltd as custodian for Equities First Holdings LLC pursuant to Master Loan Agreement and Deed of Security, described in Part 2 below. No change in beneficial ownership.

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 Master Loan Agreement and Deed of Security

• See chapter 19 for defined terms.

01/01/2011 Appendix 3Y Page 3

Appendix 3Y Change of Director’s Interest Notice

Nature of interest	Lunar Co Pty Ltd as trustee for The H & A Dorsch Family Trust (Lunar) has entered into a margin lending facility to fund tax liabilities arising from the vesting of Chalice Performance Rights in prior periods. As security for the loan, 2,000,000 fully paid ordinary shares are held by HSBC Custody Nominees (Australia) Ltd, custodian for the lender. The term of the loan facility is two years. Shares provided as security must be returned to Lunar on repayment of the loan, in accordance with the terms of the loan facility. Under the terms of the facility, Equities First may require Lunar to pay cash to meet margin calls and may dispose of secured shares in the event that such calls are not met or the loan is not repaid when due.
Name of registered holder (if issued securities)	HSBC Custody Nominees (Australia) Ltd
Date of change	24 April 2025
No. and class of securities to which interest related prior to change Note: Details are only required for a contract in relation to which the interest has changed	N/A
Interest acquired	N/A
Interest disposed	N/A
Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation	N/A
Interest after change	N/A

Part 3 –[+] Closed period

art 3 –+Closed period
Were the interests in the securities or contracts detailed above traded during a+closed period where prior written clearance was required?	Yes
If so, was prior written clearance provided to allow the trade to proceed during this period?	Yes
If prior written clearance was provided, on what date was this provided?	16 April 2025

• See chapter 19 for defined terms.

Appendix 3Y Page 4

01/01/2011