Announcement PDF Rules 4.7.3 and 4.10.3 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Name of entity WEST COAST SILVER LIMITED (previously Errawarra Resources Ltd) ABN/ARBN Financial year ended: 95 155 472 834 30 June 2025 Our corporate governance statement 1 for the period above can be found at: 2 ☒ These pages of our annual report: 29 ☒ This URL on our website: https://westcoastsilver.com.au/about-us/corporate-governance/ The Corporate Governance Statement (the CG Statement) is accurate and up to date as at 16 September 2025 and has been approved by the board. The annexure includes a key to where our corporate governance disclosures can be located. 3 Date: 19 September 2025 Name of authorised officer authorising lodgement: Bruce Garlick, Executive Chairman 1 “Corporate governance statement” is defined in Listing Rule 19.12 to mean the statement referred to in Listing Rule 4.10.3 which discloses the extent to which an entity has followed the recommendations set by the ASX Corporate Governance Council during a particular reporting period. Listing Rule 4.10.3 requires an entity that is included in the official list as an ASX Listing to include in its annual report either a corporate governance statement that meets the requirements of that rule or the URL of the page on its website where such a statement is located. The corporate governance statement must disclose the extent to which the entity has followed the recommendations set by the ASX Corporate Governance Council during the reporting period. If the entity has not followed a recommendation for any part of the reporting period, its corporate governance statement must separately identify that recommendation and the period during which it was not followed and state its reasons for not following the recommendation and what (if any) alternative governance practices it adopted in lieu of the recommendation during that period. Under Listing Rule 4.7.4, if an entity chooses to include its corporate governance statement on its website rather than in its annual report, it must lodge a copy of the corporate governance statement with ASX at the same time as it lodges its annual report with ASX. The corporate governance statement must be current as at the effective date specified in that statement for the purposes of Listing Rule 4.10.3. Under Listing Rule 4.7.3, an entity must also lodge with ASX a completed Appendix 4G at the same time as it lodges its annual report with ASX. The Appendix 4G serves a dual purpose. It acts as a key designed to assist readers to locate the governance disclosures made by a listed entity under Listing Rule 4.10.3 and under the ASX Corporate Governance Council’s recommendations. It also acts as a verification tool for listed entities to confirm that they have met the disclosure requirements of Listing Rule 4.10.3. The Appendix 4G is not a substitute for, and is not to be confused with, the entity's corporate governance statement. They serve different purposes and an entity must produce each of them separately. 2 Tick whichever option is correct and then complete the page number(s) of the annual report, or the URL of the web page, where your corporate governance statement can be found. You can, if you wish, delete the option which is not applicable. 3 Throughout this form, where you are given two or more options to select, you can, if you wish, delete any option which is not applicable and just retain the option that is applicable. If you select an option that includes “OR” at the end of the selection and you delete the other options, you can also, if you wish, delete the “OR” at the end of the selection. See notes 4 and 5 below for further instructions on how to complete this form. ASX Listing Rules Appendix 4G (current at 17/7/2020) Page 1 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations ANNEXURE – KEY TO CORPORATE GOVERNANCE DISCLOSURES Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 PRINCIPLE 1 – LAY SOLID FOUNDATIONS FOR MANAGEMENT AND OVERSIGHT 1.1 A listed entity should have and disclose a board charter setting out: (a) the respective roles and responsibilities of its board and management; and (b) those matters expressly reserved to the board and those delegated to management. ☒ 1.2 A listed entity should: (a) undertake appropriate checks before appointing a director or senior executive or putting someone forward for election as a director; and (b) provide security holders with all material information in its possession relevant to a decision on whether or not to elect or re-elect a director. ☒ 1.3 A listed entity should have a written agreement with each director and senior executive setting out the terms of their appointment. ☒ 1.4 The company secretary of a listed entity should be accountable directly to the board, through the chair, on all matters to do with the proper functioning of the board. ☒ WCE Silver’s Board Charter is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ disclosed in WCE Silver’s 2025 Annual Report Tick the box in this column only if you have followed the relevant recommendation in full for the whole of the period above. Where the recommendation has a disclosure obligation attached, you must insert the location where that disclosure has been made, where indicated by the line with “insert location” underneath. If the disclosure in question has been made in your corporate governance statement, you need only insert “our corporate governance statement”. If the disclosure has been made in your annual report, you should insert the page number(s) of your annual report (eg “pages 10-12 of our annual report”). If the disclosure has been made on your website, you should insert the URL of the web page where the disclosure has been made or can be accessed (eg “www.entityname.com.au/corporate governance/charters/”). 4 5 If you have followed all of the Council’s recommendations in full for the whole of the period above, you can, if you wish, delete this column from the form and re-format it. ASX Listing Rules Appendix 4G (current at 17/7/2020) Page 2 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation 1.5 A listed entity should: (a) have and disclose a diversity policy; (b) through its board or a committee of the board set measurable objectives for achieving gender diversity in the composition of its board, senior executives and workforce generally; and (c) disclose in relation to each reporting period: (1) the measurable objectives set for that period to achieve gender diversity; (2) the entity’s progress towards achieving those objectives; and (3) either: (A) the respective proportions of men and women on the board, in senior executive positions and across the whole workforce (including how the entity has defined “senior executive” for these purposes); or (B) if the entity is a “relevant employer” under the Workplace Gender Equality Act, the entity’s most recent “Gender Equality Indicators”, as defined in and published under that Act. If the entity was in the S&P / ASX 300 Index at the commencement of the reporting period, the measurable objective for achieving gender diversity in the composition of its board should be to have not less than 30% of its directors of each gender within a specified period. ASX Listing Rules Appendix 4G (current at 17/7/2020) Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 ☒ disclosed in the CG Statement and WCE Silver’s Diversity Policy available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ Page 3 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 1.6 A listed entity should: (a) have and disclose a process for periodically evaluating the performance of the board, its committees and individual directors; and (b) disclose for each reporting period whether a performance evaluation has been undertaken in accordance with that process during or in respect of that period. ☒ disclosed in the CG Statement 1.7 A listed entity should: (a) have and disclose a process for evaluating the performance of its senior executives at least once every reporting period; and (b) disclose for each reporting period whether a performance evaluation has been undertaken in accordance with that process during or in respect of that period. ☒ disclosed in the CG Statement ASX Listing Rules Appendix 4G (current at 17/7/2020) Page 4 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 PRINCIPLE 2 - STRUCTURE THE BOARD TO BE EFFECTIVE AND ADD VALUE 2.1 The board of a listed entity should: (a) have a nomination committee which: (1) has at least three members, a majority of whom are independent directors; and (2) is chaired by an independent director, and disclose: (3) the charter of the committee; (4) the members of the committee; and (5) as at the end of each reporting period, the number of times the committee met throughout the period and the individual attendances of the members at those meetings; or (b) if it does not have a nomination committee, disclose that fact and the processes it employs to address board succession issues and to ensure that the board has the appropriate balance of skills, knowledge, experience, independence and diversity to enable it to discharge its duties and responsibilities effectively. 2.2 A listed entity should have and disclose a board skills matrix setting out the mix of skills that the board currently has or is looking to achieve in its membership. ASX Listing Rules Appendix 4G (current at 17/7/2020) ☒ ☒ disclosed in the CG Statement disclosed in the CG Statement Page 5 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: 2.3 A listed entity should disclose: (a) the names of the directors considered by the board to be independent directors; (b) if a director has an interest, position, affiliation or relationship of the type described in Box 2.3 but the board is of the opinion that it does not compromise the independence of the director, the nature of the interest, position or relationship in question and an explanation of why the board is of that opinion; and (c) the length of service of each director. ☒ 2.4 A majority of the board of a listed entity should be independent directors. ☒ disclosed in the CG Statement 2.5 The chair of the board of a listed entity should be an independent director and, in particular, should not be the same person as the CEO of the entity. ☒ disclosed in the CG Statement 2.6 A listed entity should have a program for inducting new directors and for periodically reviewing whether there is a need for existing directors to undertake professional development to maintain the skills and knowledge needed to perform their role as directors effectively. ☒ disclosed in the CG Statement ASX Listing Rules Appendix 4G (current at 17/7/2020) Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 disclosed in the CG Statement Page 6 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 PRINCIPLE 3 – INSTIL A CULTURE OF ACTING LAWFULLY, ETHICALLY AND RESPONSIBLY 3.1 A listed entity should articulate and disclose its values. ☒ WCE Silver’s Board Charter is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ 3.2 A listed entity should: (a) have and disclose a code of conduct for its directors, senior executives and employees; and (b) ensure that the board or a committee of the board is informed of any material breaches of that code. ☒ WCE Silver’s Board Charter is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ 3.3 A listed entity should: (a) have and disclose a whistleblower policy; and (b) ensure that the board or a committee of the board is informed of any material incidents reported under that policy. ☒ WCE Silver’s Board Charter is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ 3.4 A listed entity should: (a) have and disclose an anti-bribery and corruption policy; and (b) ensure that the board or committee of the board is informed of any material breaches of that policy. ☒ WCE Silver’s Board Charter is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ ASX Listing Rules Appendix 4G (current at 17/7/2020) Page 7 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 PRINCIPLE 4 – SAFEGUARD THE INTEGRITY OF CORPORATE REPORTS 4.1 The board of a listed entity should: (a) have an audit committee which: (1) has at least three members, all of whom are non-executive directors and a majority of whom are independent directors; and (2) is chaired by an independent director, who is not the chair of the board, and disclose: (3) the charter of the committee; (4) the relevant qualifications and experience of the members of the committee; and (5) in relation to each reporting period, the number of times the committee met throughout the period and the individual attendances of the members at those meetings; or (b) if it does not have an audit committee, disclose that fact and the processes it employs that independently verify and safeguard the integrity of its corporate reporting, including the processes for the appointment and removal of the external auditor and the rotation of the audit engagement partner. 4.2 The board of a listed entity should, before it approves the entity’s financial statements for a financial period, receive from its CEO and CFO a declaration that, in their opinion, the financial records of the entity have been properly maintained and that the financial statements comply with the appropriate accounting standards and give a true and fair view of the financial position and performance of the entity and that the opinion has been formed on the basis of a sound system of risk management and internal control which is operating effectively. ASX Listing Rules Appendix 4G (current at 17/7/2020) ☒ disclosed in the CG Statement ☒ Page 8 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation 4.3 A listed entity should disclose its process to verify the integrity of any periodic corporate report it releases to the market that is not audited or reviewed by an external auditor. Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: ☒ Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 WCE Silver’s Unaudited Periodic Corporate Report Verification Procedure is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ PRINCIPLE 5 – MAKE TIMELY AND BALANCED DISCLOSURE 5.1 A listed entity should have and disclose a written policy for complying with its continuous disclosure obligations under listing rule 3.1. ☒ 5.2 A listed entity should ensure that its board receives copies of all material market announcements promptly after they have been made. ☒ 5.3 A listed entity that gives a new and substantive investor or analyst presentation should release a copy of the presentation materials on the ASX Market Announcements Platform ahead of the presentation. ☒ WCE Silver’s Continuous Disclosure Policy is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ PRINCIPLE 6 – RESPECT THE RIGHTS OF SECURITY HOLDERS 6.1 A listed entity should provide information about itself and its governance to investors via its website. ☒ WCE Silver’s Corporate Governance Plan is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ 6.2 A listed entity should have an investor relations program that facilitates effective two-way communication with investors. ☒ WCE Silver’s Shareholder Communication Strategy is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ 6.3 A listed entity should disclose how it facilitates and encourages participation at meetings of security holders. ☒ WCE Silver’s Shareholder Communication Strategy is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ ASX Listing Rules Appendix 4G (current at 17/7/2020) Page 9 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: 6.4 A listed entity should ensure that all substantive resolutions at a meeting of security holders are decided by a poll rather than by a show of hands. ☒ 6.5 A listed entity should give security holders the option to receive communications from, and send communications to, the entity and its security registry electronically. ☒ Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 WCE Silver’s Election of Electronic Communications is available from: https://westcoastsilver.com.au/aboutus/corporate-governance/ PRINCIPLE 7 – RECOGNISE AND MANAGE RISK 7.1 The board of a listed entity should: (a) have a committee or committees to oversee risk, each of which: (1) has at least three members, a majority of whom are independent directors; and (2) is chaired by an independent director, and disclose: (3) the charter of the committee; (4) the members of the committee; and (5) as at the end of each reporting period, the number of times the committee met throughout the period and the individual attendances of the members at those meetings; or (b) if it does not have a risk committee or committees that satisfy (a) above, disclose that fact and the processes it employs for overseeing the entity’s risk management framework. ASX Listing Rules Appendix 4G (current at 17/7/2020) ☒ disclosed in the CG Statement Page 10 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 7.2 The board or a committee of the board should: (a) review the entity’s risk management framework at least annually to satisfy itself that it continues to be sound and that the entity is operating with due regard to the risk appetite set by the board; and (b) disclose, in relation to each reporting period, whether such a review has taken place. ☒ disclosed in the CG Statement 7.3 A listed entity should disclose: (a) if it has an internal audit function, how the function is structured and what role it performs; or (b) if it does not have an internal audit function, that fact and the processes it employs for evaluating and continually improving the effectiveness of its governance, risk management and internal control processes. ☒ disclosed in the CG Statement 7.4 A listed entity should disclose whether it has any material exposure to environmental or social risks and, if it does, how it manages or intends to manage those risks. ☒ disclosed in the CG Statement ASX Listing Rules Appendix 4G (current at 17/7/2020) Page 11 Appendix 4G Key to Disclosures Corporate Governance Council Principles and Recommendations Corporate Governance Council recommendation Where a box below is ticked, 4 we have followed the recommendation in full for the whole of the period above. We have disclosed this in our Corporate Governance Statement: Where a box below is ticked, we have NOT followed the recommendation in full for the whole of the period above. Our reasons for not doing so are: 5 PRINCIPLE 8 – REMUNERATE FAIRLY AND RESPONSIBLY ☒ 8.1 The board of a listed entity should: (a) have a remuneration committee which: (1) has at least three members, a majority of whom are independent directors; and (2) is chaired by an independent director, and disclose: (3) the charter of the committee; (4) the members of the committee; and (5) as at the end of each reporting period, the number of times the committee met throughout the period and the individual attendances of the members at those meetings; or (b) if it does not have a remuneration committee, disclose that fact and the processes it employs for setting the level and composition of remuneration for directors and senior executives and ensuring that such remuneration is appropriate and not excessive. 8.2 A listed entity should separately disclose its policies and practices regarding the remuneration of nonexecutive directors and the remuneration of executive directors and other senior executives. ☒ disclosed in WCE Silver’s 2025 Annual Report 8.3 A listed entity which has an equity-based remuneration scheme should: (a) have a policy on whether participants are permitted to enter into transactions (whether through the use of derivatives or otherwise) which limit the economic risk of participating in the scheme; and (b) disclose that policy or a summary of it. ☒ disclosed in WCE Silver’s 2025 Annual Report ASX Listing Rules Appendix 4G (current at 17/7/2020) disclosed in the CG Statement Page 12 CORPORATE GOVERNANCE STATEMENT Approved by the Board on 16 September 2025 INTRODUCTION The board of directors ( “Board”) of West Coast Silver Limited (“West Coast Silver” or “Company”) is responsible for the overall corporate governance of the Company and its subsidiaries ( “Group”). The Board believes that good corporate governance helps ensure the future success of the Group, adds value to stakeholders and enhances investor confidence. The Board guides and monitors the business affairs of the Group on behalf of the shareholders by whom they are elected and to whom they are accountable. The ASX document ‘Corporate Governance Principles and Recommendations 4th Edition’ (“Recommendations”) published by the ASX Corporate Governance Council applies to listed entities with the aim of enhancing the credibility and transparency of Australia’s capital markets. The Board has assessed the Group’s current practice against the Recommendations and other than the matters specified below under ‘If Not, Why Not’ disclosure, all the best practice recommendations of the ASX Corporate Governance Council have been applied. This Corporate Governance Statement (the “CG Statement”) discloses the extent to which the Company has followed the Recommendations, or where appropriate, indicates a departure from the Recommendations with an explanation for the financial year ended 30 June 2025. This Statement should be read in conjunction with the Company’s Corporate Governance Plan (the “CG Plan”) on its website https://westcoastsilver.com.au/corporate-governance/ PRINCIPLE 1: Lay solid foundations for management and oversight Recommendation 1.1: Disclose a Board Charter The Company’s Board charter (the “Board Charter”) contained in the CG Plan details the respective roles and responsibilities of the Board and management and those matters expressly reserved to the Board and delegated to management. Recommendation 1.2: Undertake appropriate checks before appointing a Director or senior executive, and provide material information to security holder The Company undertakes appropriate checks before appointing a Company director (“Director”) or senior executive or endorsing the election of any prospective Director and provides security holders with all material information in its possession relevant to a decision on whether or not to elect or re-elect a Director by providing biographical details of candidates including relevant qualifications, experience and skills and details of any other material directorships currently held by the candidate and in the case of a candidate standing for election as a Director for the first time: • confirmation that the Company has conducted appropriate checks into the candidate’s background and experience which have been satisfactory; and • if the Board considers that the candidate will, if elected, qualify as an independent Director, a statement to that effect. Recommendation 1.3: Establish a written agreement with each Director and senior executive setting out the terms of their appointment The Company’s Nomination Committee Charter contained in the CG Plan requires the nomination committee (or, in its absence, the Board) to ensure that each Director and senior executive is personally a party to a written agreement which sets out the terms of that Director’s or senior executive’s appointment. The Company has written agreements, including the remuneration entitlement and performance requirements with each Director and senior executive. Directors also receive a deed of indemnity, insurance, and access. The summary of agreements is disclosed in the Company’s annual report (the “Annual Report”). WEST COAST SILVER LIMITED ASX | WCE ACN: 155 472 834 REGISTERED OFFICE Level 2, 10 Ord Street West Perth, WA 6005 PO Box 1227, West Perth WA 6872, Australia info@westcoastsilver.com.au +61 8 9322 3383 westcoastsilver.com.au 1 CORPORATE GOVERNANCE STATEMENT Recommendation 1.4: The Company Secretary should be accountable directly to the Board, through the Chair The Board Charter outlines the roles, responsibilities and accountability of the Company’s company secretary (the “Company Secretary”). In accordance with this, the Company Secretary is accountable directly to the Board, through the chairperson of the Board (the “Chair”), on all matters to do with the proper functioning of the Board. Recommendation 1.5: Disclose a Diversity Policy and set measurable objectives for achieving gender diversity The Company’s diversity policy (the “Diversity Policy”) provides a framework to establish and achieve measurable diversity objectives, including in respect of gender diversity. The Diversity Policy allows the Board to set measurable gender diversity objectives, if considered appropriate, and to assess annually both the objectives (if any have been set) and the Company’s progress in achieving them. The proportion of women within the Group at 30 June 2025 was as follows: FY 2025 Position Category Men Women Board 100% Nil Senior executive 100% Nil Whole organisation 100% Nil Given the current small size of the Board and the Company’s operations, the Board does not presently intend to set measurable gender diversity objectives because: (a) the Board does not anticipate there will be a need to appoint any new Directors or senior executives due to the limited nature of the Company’s existing and proposed activities and the Board’s view that the existing Directors and senior executives have sufficient skill and experience to carry out the Company’s plans; (b) if it becomes necessary to appoint any new Directors or senior executives, the Board will consider the application of the measurable diversity objectives and determine whether, given the small size of the Company and the Board, requiring specified objectives to be met will unduly