Announcement PDF Entitlement Offer Offer Booklet 1 for 10 non-renounceable pro rata entitlement offer of New Shares at $0.02 (2 cents) per New Share to raise approximately A$1.1 million (before costs) Kalgoorlie Gold Mining Limited (ACN 645 666 164) The Entitlement Offer is joint lead managed by Stralis Capital Partners Pty Limited (Stralis or the Underwriter) and Lazarus Advisory Pty Ltd (Lazarus) and underwritten by Stralis. The Entitlement Offer closes at 5.00pm (AEDT) on 6 October 2026* IMPORTANT NOTICES: If you are an Eligible Shareholder, this is an important document that requires your immediate attention. This document and the accompanying personalised Entitlement and Acceptance Form should be read in their entirety. This document is not a prospectus under the Corporations Act and has not been lodged with ASIC. This document does not purport to contain all the information that a prospective investor may require in connection with any potential investment in the Company. Each recipient must make its own independent assessment of the Company before acquiring any New Shares in the Company. You should consult your stockbroker, solicitor, accountant or other professional adviser if you have any questions. *The Company reserves the right, subject to the Corporations Act and the Listing Rules, to extend the Closing Date. Important Notices This Offer Booklet is dated 24 September 2026. Capitalised terms in this section have the meaning given to them in this Offer Booklet. This Offer Booklet has been issued by Kalgoorlie Gold Mining Limited (ACN 645 666 164) (Company). The Entitlement Offer is made in accordance with section 708AA of the Corporations Act (as notionally modified by ASIC Corporations (Non-Traditional Rights Issues) Instrument 2026/98 and ASIC Corporations (Disregarding Technical Relief) Instrument 2026/180). This Offer Booklet does not contain all of the information which an investor may require to make an informed investment decision, nor does it contain all the information which would be required to be disclosed in a prospectus. The information in this Offer Booklet does not constitute financial product advice and does not take into account your investment objectives, financial situation or particular needs. This Offer Booklet should be read in its entirety before you decide to participate in the Entitlement Offer. This Offer Booklet is not a prospectus or other disclosure document under the Corporations Act and has not been lodged with ASIC. By paying for your New Shares through BPAY® or, if you are based in New Zealand and unable to pay using BPAY®, by direct transfer, in accordance with the instructions on the Entitlement and Acceptance Form, you acknowledge that you have read this Offer Booklet and you have acted in accordance with and agree to the terms of the Entitlement Offer detailed in this Offer Booklet. International offering restrictions This Offer Booklet and the accompanying Entitlement and Acceptance Form do not constitute an offer or invitation in any place in which, or to any person to whom, it would not be lawful to make such an offer or invitation. No action has been taken to register or qualify the Entitlement Offer or the New Shares, or otherwise permit the public offering of the New Shares, in any jurisdiction other than Australia. This Offer Booklet may not be distributed, and no offer of New Shares may be made, outside Australia and New Zealand. The offer of New Shares and the distribution of this Offer Booklet outside Australia is restricted by law. If you come into possession of the information in this Offer Booklet, you should observe such restrictions. Any non compliance with these restrictions may contravene applicable securities laws. See section 6.2 for further information. Definitions and interpretation Defined terms used in this Offer Booklet are contained in section 7. Section 7 also includes the rules of interpretation of this Offer Booklet. Taxation The taxation consequences of any investment in New Shares will depend upon your particular circumstances. Potential investors must make their own enquiries concerning the taxation consequences of an investment in the Company. Applicants should consult their tax adviser for advice applicable to their individual needs and circumstances. Privacy The Company collects information about each Applicant provided on an Entitlement and Acceptance Form for the purposes of processing the Application and, if the Application is successful, to administer the Applicant’s shareholding in the Company. By submitting an Entitlement and Acceptance Form, you will be providing personal information to the Company (directly or through the Share Registry). The Company collects, holds and will use that information to assess your Application. The Company collects your personal information to process and administer your shareholding in the Company and to provide related services to you. The Company may disclose your personal information for purposes related to your shareholding in the Company, including to the Share Registry, the Company’s related bodies corporate, agents, contractors and third party service providers, including mailing houses and professional advisers, and to ASX and regulatory bodies. You can obtain access to personal information that the Company holds about you. To make a request for access to your personal information held by (or on behalf of) the Company, please contact the Company through the Share Registry. Governing law This Offer Booklet, the Entitlement Offer and the contracts formed on acceptance of the Applications are governed by the laws of Western Australia. Each Applicant submits to the exclusive jurisdiction of the courts of Western Australia. No representations No person is authorised to give any information or to make any representation in connection with the Entitlement Offer which is not contained in this Offer Booklet. Any information or representation in connection with the Entitlement Offer not contained in the Offer Booklet may not be relied upon as having been authorised by the Company or any of its officers. Except as required by law, and only to the extent so required, none of the Company, its related bodies corporate or any of their respective directors, officers, employees, agents, advisers or representatives, or any other person, warrants or guarantees the future performance of the Company or any return on any investment made pursuant to this Offer Booklet. Past performance Investors should note that the Company’s past performance, including past share price performance, cannot be relied upon as an indicator of (and provides no guidance as to) the Company’s future performance including the Company’s future financial position or share price performance. Future performance and forward looking statements This Offer Booklet contains certain statements that constitute “forward-looking statements”. These statements can be identified by the use of terminology such as “will”, “anticipate”, “believe”, “expect”, “project”, “continue”, “assume”, “forecast”, “estimate”, “likely”, “intend”, “outlook”, “should”, “could”, “may”, “target”, “plan” or comparable terminology. Indications of, and guidance on, future earnings, financial position, dividends and distributions and performance are also forward-looking statements, as are statements regarding the Company’s intent, belief or current expectations with respect to the timetable, conduct and outcome of the Entitlement Offer and the use of proceeds thereafter, statements about the plans, objectives and strategies of the management of the group), statements about the industry and markets in which the Company operates, statements about the future performance of the Company’s business and its financial condition, and forecasted economic indicators. Such forward-looking statements are provided as a general guide only, should not be relied on as an indication or guarantee of future performance, and involve known and unknown risks (including, without limitation, the risks set out in the Company’s Investor Presentation included in section 5, uncertainties and other factors, many of which are beyond the control of the Company, its officers, employees, agents and advisors, that may cause the Company’s actual results and performance to be materially different from any future results or performance expressed or implied in such statements. Forward-looking statements may also assume the success of the Company’s business strategies. The success of any of these strategies is subject to uncertainties and contingencies beyond the Company’s control, and no assurance can be given that any of the strategies will be effective or that the anticipated benefits from the strategies will be realised in the period for which the forward-looking statements may have been prepared or otherwise. There can be no assurance that actual outcomes will not differ materially from the forward-looking statements in this Offer Booklet. There are usually differences between forecast and actual results because events and actual circumstances frequently do not occur as forecasted and their differences may be material. Refer to the Company’s Investor Presentation included in section 5 for a non-exhaustive summary of certain key risk factors. Neither the Company or any other person gives any representation, warranty, assurance or guarantee that the occurrence of the events expressed or implied in any forward-looking statement will occur. To the maximum extent permitted by law, the Company and its advisors, affiliates, related bodies corporate, directors, officers, partners, employees and agents disclaim any responsibility and undertake no obligation for the accuracy or completeness of any forward-looking statements whether as a result of new information, future events or results or otherwise. The Company disclaims any responsibility to update or revise any forward-looking statement to reflect any change in the Company’s financial condition, status or affairs or any change in the events, conditions or circumstances on which a statement is based, except as required by Australian law. JLM Disclaimer To the maximum extent permitted by law, the Joint Lead Managers and their related bodies corporate and affiliates, and their respective officers, directors, employees, agents and advisers (collectively, JLM Parties): (i) disclaim all responsibility and liability (including, without limitation, any liability arising from fault, negligence or negligent misstatement) for any loss (including consequential or contingent loss or damage) arising from this Offer Booklet or reliance on anything contained in or omitted from it or otherwise arising in connection with this Offer Booklet; (ii) disclaim any obligations or undertaking to release any updates or revision to the information in this Offer Booklet to reflect any change in expectations or assumptions; and (iii) do not make any representation or warranty, express or implied, as to the accuracy, reliability, completeness of the information in this Offer Booklet or that this Offer Booklet contains all material information about the Company, the Entitlement Offer, or that a prospective investor or purchaser may require in evaluating a possible investment in the Company or acquisition of shares in the Company, or likelihood of fulfilment of any forward-looking statement or any event or results expressed or implied in any forward- looking statement. The JLM Parties take no responsibility for the Entitlement Offer and make no recommendations as to whether any person should participate in the Entitlement Offer nor do they make any representations or warranties (express or implied) concerning the Entitlement Offer, and they disclaim (and by accepting this Offer Booklet you disclaim) any fiduciary relationship between them and the recipients of this Offer Booklet, or any duty to the recipients of this Offer Booklet or participants in the Entitlement Offer or any other person. The JLM Parties have not authorised, permitted or caused the issue, submission, dispatch or provision of this Offer Booklet and, for the avoidance of doubt, and except for references to their name, none of the JLM Parties makes or purports to make any statement in this Offer Booklet and there is no statement in this Offer Booklet which is based on any statement by any of them. The JLM Parties may rely on information provided by or on behalf of institutional investors in connection with managing and conducting the Entitlement Offer and without having independently verified that information and the JLM Parties do not assume any responsibility for the accuracy or completeness of that information. The JLM Parties may have interests in the securities of the Company, including by providing corporate advisory services to the Company. Further, the JLM Parties may act as market maker or buy or sell those securities or associated derivatives as principal or agent. The Underwriter will receive fees for acting in its capacity as Underwriter to the Entitlement Offer. Risks An investment in New Shares is subject to investment and other known and unknown risks, some of which are beyond the control of the Company. The Company does not guarantee any particular rate of return or the performance of the Company, nor does it guarantee any particular tax treatment. Investors should refer to the Company’s Investor Presentation included in section 5, and periodic and continuous disclosure announcements to ASX for a summary of general and specific risk factors that may affect the Company. Trading New Shares The Company will have no responsibility and disclaims all liability (to the maximum extent permitted by law) to persons who trade New Shares they believe will be issued to them before they receive their holding statements, whether on the basis of confirmation of the allocation provided by the Company or the Share Registry or otherwise, or who otherwise trade or purport to trade New Shares in error or which they do not hold or are not entitled to. If you are in any doubt, as to these matters you should first consult with your stockbroker, solicitor, accountant or other professional adviser. Corporate information Directors Name Position Pauline Gately Matt Painter Andrew Penkethman Non-Executive Chair Managing Director Non-Executive Director Company Secretary Graeme Smith Registered and Principal Office Share Registry Kalgoorlie Gold Mining Limited Level 1, 1209 Hay Street West Perth WA 6005 Automic Group Level 5, 191 St Georges Terrace Perth WA 6000 Phone: +61 8 6002 2700 Phone: 1300 288 664 (within Australia) Website: www.kalgoldmining.com.au +61 2 9698 5414 (outside Australia) ASX Code: KAL Joint Lead Manager and Underwriter Joint Lead Manager Stralis Capital Partners Pty Limited Level 7, 264 George Street, Sydney NSW 2000 Lazarus Advisory Pty Ltd Level 37/152 St Georges Terrace Perth WA 6000 Corporate Advisor Palomar Advisory Pty Ltd Suite 3, Level 7, 24-28 Collins Street, Melbourne, VIC 3000 Chair’s letter 24 September 2026 Dear Shareholder Non-Renounceable Entitlement Offer On 14 September 2026, the Company announced its intention to raise up to approximately $3.4 million (before costs) through: • a placement of new Shares to Institutional Investors to raise approximately $2.3 million (before costs) (Placement); and • a non-renounceable underwritten pro rata entitlement offer to raise approximately $1.1 million (before costs), whereby Eligible Shareholders will be invited to subscribe for 1 New Share for every 10 Existing Shares held on the Record Date (Entitlement Offer). The Offer Price of $0.02 (2.00 cents) per New Share represents: • a 13.04% discount to the last closing price of $0.023 as at 9 September 2026; • a 19.4% discount to the Company’s 15-day VWAP up to and including 9 September 2026; and • a 19.1% discount to the Company’s 30-day VWAP up to and including 9 September 2026. Proceeds from the Placement and Entitlement Offer will be used for: • exploration programs across the Company’s Western Australian project portfolio, and particularly the Pinjin Gold Project; • general working capital; and • costs of the Placement and Entitlement Offer. Refer to Section 3.2 for further information regarding the use of proceeds from the Placement and Entitlement Offer. Entitlement Offer On behalf of the Board, I am pleased to invite Eligible Shareholders to participate in the Entitlement Offer. Under the Entitlement Offer, Eligible Shareholders are entitled to subscribe for 1 New Share for every 10 Existing Shares held at 7:00pm (AEST) on the Record Date (Entitlement) at the Offer Price. Approximately 56,937,017 New Shares (subject to rounding) will be issued under the Entitlement Offer. Eligible Shareholders who take up their Entitlement in full may also apply for additional New Shares under the Top-Up Facility (subject to compliance with applicable laws and to the terms set out in this Offer Booklet). Applications for additional New Shares under the Top-Up Facility are capped at 100% of your Entitlement. If you apply for additional New Shares under the Top-Up Facility, there is no guarantee that you will be allocated any additional New Shares. Any additional New Shares not subscribed for under the Top-Up Facility will then be taken up by the Underwriter (on the terms of their underwriting commitments) and any sub-underwriters in accordance with the allocation policy set out in Section 2.5. New Shares will rank equally with existing Shares on issue in all respects from date of quotation. The Entitlement Offer closes at 5:00pm (AEDT) on 6 October 2026 (unless extended or withdrawn). The Company is of the view that the Entitlement Offer will not affect the control (as defined by section 50AA of the Corporations Act) of the Company. Other information This Offer Booklet contains important information, including: • ASX announcements relating to the Entitlement Offer released to the ASX on 14 September 2026 and 15 September 2026, including the Investor Presentation, which provides information on the Company, the Entitlement Offer, the Underwriting Agreement under which the Entitlement Offer is fully underwritten by Stralis and key risks for you to consider regarding an investment in the Company; • instructions on how to participate in the Entitlement Offer, if you choose to do so, and a timetable of key dates; • information regarding the personalised Entitlement and Acceptance Form that will accompany this Offer Booklet when it is made available to Eligible Shareholders, which will detail your Entitlement, to be completed in accordance with the instructions in this Offer Booklet and your personalised Entitlement and Acceptance Form; and • instructions on how to take up all or part of your Entitlement via BPAY® or by direct transfer. You should carefully read this Offer Booklet in its entirety and consult your stockbroker, accountant or other professional financial adviser before making your investment decision. In particular, you should read and consider the Company’s Investor Presentation included in section 5 (as released to ASX on 15 September 2026), which contains a summary of some of the key risks associated with an investment in the Company. If you are uncertain about taking up your Entitlement you should consult your stockbroker, solicitor, accountant or other suitably qualified professional financial adviser to evaluate whether or not to participate in the Entitlement Offer. The Entitlement Offer is scheduled to close at 5.00pm (AEDT) on 6 October 2026. If you decide to take this opportunity to increase your investment in the Company please ensure that, before 5.00pm (AEDT) on 6 October 2026, you have paid your Application Monies, via BPAY® pursuant to the instructions in the personalised Entitlement and Acceptance Form that will accompany this Offer Booklet when it is despatched to you or your Application Monies are sent by direct transfer and received in cleared funds by the Share Registry by 5.00pm (AEDT) on the Closing Date. If you do not wish to take up any of your Entitlement, you do not have to take any action. For further information on the Entitlement Offer, you may contact Automic Group on 1300 288 664 (within Australia), or +61 2 9698 5414 (international) between 8:30 am and 7:00pm (Sydney time), Monday to Friday during the Entitlement Offer period On behalf of the board of the Company, I have pleasure in inviting you to consider this investment opportunity and thank you for your ongoing support of the Company. Yours sincerely, Pauline Gately Non-Executive Chair Kalgoorlie Gold Mining Limited Investment overview Summary of the Entitlement Offer Entitlement Offer Ratio 1 New Share for every 10 Shares held on the Record Date Offer Price $0.02 (2.00 cents) per New Share Discount Offer Price of $0.02 (2.00 cents) per New Share represents: • a 13.04% discount to the last closing price of $0.023 as at 9 September 2026; • a 19.4% discount to the Company’s 15-day VWAP up to and including 9 September 2026; and • a 19.1% discount to the Company’s 30-day VWAP up to and including 9 September 2026. Size (subject to rounding) Up to 56,937,017 New Shares Renounceability The Entitlement Offer is non-renounceable Underwriting The Entitlement Offer is fully underwritten by the Underwriter, Stralis Capital Partners Pty Limited, pursuant to the Underwriting Agreement. A summary of the Underwriting Agreement is set out in Section 2.3. Gross proceeds Approximately $1.1 million (before costs) Key dates Event Date (2026) Entitlement Offer announced Monday, 14 September Investor Presentation and Entitlement Offer cleansing notice lodged with ASX Tuesday, 15 September Settlement of New Shares under Placement Thursday, 17 September Issue of New Shares under Placement Ex-entitlement date Friday, 18 September Record Date for determining eligibility to participate in the Entitlement Offer (7:00pm AEST) Monday, 21 September Entitlement Offer Booklet announced, Entitlement Offer documentation despatched and Entitlement Offer opens Thursday, 24 September Last day to extend the Entitlement Offer close date Thursday, 1 October Entitlement Offer close date (5:00pm AEDT) Tuesday, 6 October Announce results of Entitlement Offer Friday, 9 October Issue of New Shares under Entitlement Offer Lodgement of Appendix 2A with ASX Tuesday, 13 October Normal trading of New Shares issued under the Entitlement Offer Wednesday, 14 October Notes: The timetable above (and each reference to it or to dates in this Offer Booklet) is indicative only and may change. The Company, in consultation with the Underwriter, reserves the right to amend any or all of these dates and times without notice, subject to the Corporations Act, the Listing Rules and other applicable laws. In particular, the Company reserves the right to extend the Closing Date and to accept late Applications (either generally or in particular cases). Any extension of the Closing Date will have a consequential effect on the allotment date of New Shares. The commencement of quotation of the New Shares is subject to confirmation from ASX. The Company also reserves the right not to proceed with the Entitlement Offer in whole or in part at any time prior to allotment and issue of the New Shares. In that event, the relevant Application Monies (without interest) will be returned in full to Applicants. Cooling-off rights do not apply to an investment in New Shares. You cannot withdraw your Application. Eligible Shareholders wishing to participate in the Entitlement Offer are encouraged to submit their Entitlement and Acceptance Form as soon as possible after the Entitlement Offer opens. Enquiries If you have any doubt about whether you should participate in the Entitlement Offer, you should seek professional financial advice from your stockbroker, solicitor, accountant or other suitably qualified professional financial adviser before making any investment decision. For further information on the Entitlement Offer, if you have questions on how to complete the Entitlement and Acceptance Form, or have lost your Entitlement and Acceptance Form and would like a replacement form, you may contact Automic Group on 1300 288 664 (within Australia), or +61 2 9698 5414 (international) between 8:30 am and 7:00pm (Sydney time), Monday to Friday during the Entitlement Offer period. Table of Contents 1. Summary of options available to you 2 2. Overview of the Entitlement Offer 4 2.1 Overview 4 2.2 Entitlement Offer 4 2.3 Underwriting 4 2.4 The Top-Up Facility 9 2.5 Allocation policy 10 2.6 Ranking of New Shares 10 3. Effect of the Entitlement Offer 11 3.1 Capital structure 11 3.2 Use of proceeds 11 3.3 Director interests 12 3.4 Substantial Shareholders 12 3.5 Control issues and consequences of the Entitlement Offer 12 4. How to apply 13 4.1 Entitlement Offer 13 4.2 Your Entitlement 13 4.3 Options available to you 13 4.4 Consequences of not accepting all or part of your Entitlement 14 4.5 Payment 15 4.6 Entitlement and Acceptance Form is binding 16 4.7 Brokerage and stamp duty 18 4.8 Notice to nominees and custodians 18 4.9 Withdrawal of the Entitlement Offer 18 5. Investor Presentation 19 6. Additional Information 20 6.1 Eligibility of Shareholders 20 6.2 Overseas Shareholders 20 6.3 Ineligible Shareholders 20 6.4 Allotment, trading and quotation 21 6.5 Reconciliation 21 6.6 Continuous disclosure 21 6.7 No cooling off rights 22 7. Definitions and interpretation 23 7.1 Defined terms 23 7.2 Interpretation 24 1. Summary of options available to you If you are an Eligible Shareholder, you may take one of the following actions: (a) take up all of your Entitlement; or (b) take up all of your Entitlement and also apply for additional New Shares above your Entitlement under the Top Up Facility; or (c) take up part of your Entitlement and elect for the balance to lapse, in which case you will receive no value for the lapsed part of your Entitlement; or (d) do nothing, in which case your Entitlement will lapse and you will receive no value for the lapsed Entitlement. If you are a Shareholder that is not an Eligible Shareholder, you are an ‘Ineligible Shareholder’. Ineligible Shareholders are not entitled to participate in the Entitlement Offer and should refer to section 6.3 for further information. Options available to you Key considerations For further information Option One: Take up all of your Entitlement You may elect to purchase New Shares at the Offer Price (see section 4 “How to Apply” for instructions on how to take up your Entitlement). The Entitlement Offer closes at 5.00pm (AEDT) on 6 October 2026. The New Shares will be fully paid and rank equally in all respects with existing Shares on issue (including rights to dividends and distributions). See section 4.3(a) Option Two: Take up all of your Entitlement and elect to apply for additional New Shares above your Entitlement under the Top-Up Facility If you take up all of your Entitlement, you may also apply for additional New Shares under the Top-Up Facility. Applications under the Top-Up Facility are limited to a maximum of 100% of your Entitlement. Details of the Top-Up Facility and the allocation policy are included in sections 2.4 and 2.5. There is no guarantee that you will be allocated any additional New Shares under the Top-Up Facility. See section 4.3(b) Option Three: Take up part of your Entitlement If you do not take up your Entitlement in full, those entitlements which you do not take up will lapse and you will not receive any payment or value for them. If you do not take up your Entitlement in full, you may have your proportionate equity interest in the Company reduced as a result of dilution by the New See section 4.3(c) Options available to you Key considerations For further information Shares issued under the Entitlement Offer. You will not be entitled to apply for additional New Shares under the Top-Up Facility. Option Four: Do nothing, in which case your Entitlement will lapse, and you will receive no value for your lapsed Entitlement If you do not take up your Entitlement, you will not be allocated New Shares and your Entitlements will lapse. Your Entitlement to participate in the Entitlement Offer is non- renounceable, which means your Entitlements are non-transferrable and cannot be sold, traded on ASX or any other exchange, nor can they be privately transferred. If you do not take up your Entitlement your proportionate equity interest in the Company will be diluted as a result of the Entitlement Offer. See section 4.3(d) 2. Overview of the Entitlement Offer 2.1 Overview The Company intends to raise approximately $1.1 million (before costs) under the Entitlement Offer via an offer of approximately 56,937,017 New Shares (subject to rounding) at an Offer Price of $0.02 (2.00 cents) per New Share. The Entitlement Offer is non-renounceable. Accordingly, Entitlements do not trade on the ASX nor can they be sold, transferred or otherwise disposed of New Shares issued under the Entitlement Offer are to be issued at the same price as New Shares issued under the Placement. 2.2 Entitlement Offer The Entitlement Offer constitutes an offer to Eligible Shareholders, who are invited to apply for 1 New Share for every 10 Existing Shares held on the Record Date. Please refer to sections 6.1 and 6.3 regarding your eligibility to participate in the Entitlement Offer. The Entitlement Offer is non-renounceable. Accordingly, Entitlements do not trade on the ASX, nor can they be sold, transferred or otherwise disposed of. The Entitlement Offer opens on Thursday, 24 September 2026. The Offer Booklet will be made available by that date, along with a personalised Entitlement and Acceptance Form, to Eligible Shareholders. The Entitlement Offer is expected to close at 5.00pm (AEDT) on Tuesday, 6 October 2026. The Entitlement Offer is being made pursuant to section 708AA of the Corporations Act (as