Announcement PDF Appendix 3B - Proposed issue of securities Update Summary Entity name CASTLE MINERALS LIMITED Announcement Type Update to previous announcement Date of this announcement 11/3/2025 Reason for update to a previous announcement Update for shares issued on 7 March 2025. Refer to next page for full details of the announcement Appendix 3B - Proposed issue of securities 1/6 Appendix 3B - Proposed issue of securities Part 1 - Entity and announcement details 1.1 Name of +Entity CASTLE MINERALS LIMITED We (the entity named above) give ASX the following information about a proposed issue of +securities and, if ASX agrees to +quote any of the +securities (including any rights) on a +deferred settlement basis, we agree to the matters set out in Appendix 3B of the ASX Listing Rules. If the +securities are being offered under a +disclosure document or +PDS and are intended to be quoted on ASX, we also apply for quotation of all of the +securities that may be issued under the +disclosure document or +PDS on the terms set out in Appendix 2A of the ASX Listing Rules (on the understanding that once the final number of +securities issued under the +disclosure document or +PDS is known, in accordance with Listing Rule 3.10.3C, we will complete and lodge with ASX an Appendix 2A online form notifying ASX of their issue and applying for their quotation). 1.2 Registered Number Type Registration Number ABN 83116095802 1.3 ASX issuer code CDT 1.4 The announcement is Update/amendment to previous announcement 1.4a Reason for update to a previous announcement Update for shares issued on 7 March 2025. 1.4b Date of previous announcement to this update 3/3/2025 1.5 Date of this announcement 11/3/2025 1.6 The Proposed issue is: A standard +pro rata issue (non-renounceable or renounceable) 1.6a The proposed standard +pro rata issue is: + Non-renounceable Appendix 3B - Proposed issue of securities 2/6 Appendix 3B - Proposed issue of securities Part 3 - Details of proposed entitlement offer issue Part 3A - Conditions 3A.1 Do any external approvals need to be obtained or other conditions satisfied before the entitlement offer can proceed on an unconditional basis? Yes 3A.1a Conditions Approval/Condition Date for determination Other (please specify in comment section) 15/4/2025 Is the date estimated or actual? ** Approval received/condition met? Estimated Comments Pro-rata, non-renounceable entitlements issue is subject to the completion of the Placement (please refer to ASX announcement dated 3 March 2025). PLEASE NOTE THIS APPENDIX 3B IS PRESENTED ON A POST-CONSOLIDATION BASIS. Part 3B - Offer details +Class or classes of +securities that will participate in the proposed issue and +class or classes of +securities proposed to be issued ASX +security code and description CDT : ORDINARY FULLY PAID Is the proposed security a 'New class' (+securities in a class that is not yet quoted or recorded by ASX) or an 'Existing class' (additional securities in a class that is already quoted or recorded by ASX)? New class Will the proposed issue of this +security include an offer of attaching +securities? No If the entity has quoted company options, do the terms entitle option holders to participate on exercise? No Details of +securities proposed to be issued ISIN Code (if Issuer is a foreign company and +securities do not have +CDIs issued over them) ISIN Code for the entitlement or right to participate in a non-renounceable issue (if Issuer is foreign company and +securities do not have +CDIs issued over them) Appendix 3B - Proposed issue of securities 3/6 Appendix 3B - Proposed issue of securities Have you received confirmation from ASX that the terms of the proposed +securities are appropriate and equitable under listing rule 6.1? No Will the entity be seeking quotation of the 'new' class of +securities on ASX? No ASX +security code +Security description New class-code to be confirmed OPTIONS EXPIRING 31-MAY-2028 EX $0.12 +Security type Options Offer ratio (ratio to existing holdings at which the proposed +securities will be issued) The quantity of additional +securities For a given quantity of +securities to be issued held 1 3 What will be done with fractional entitlements? Maximum number of +securities proposed to be issued (subject to rounding) Fractions rounded down to the nearest whole number or fractions disregarded 38,670,254 Reason for the update of 'Maximum number of +securities proposed to be issued' Offer price details for retail security holders In what currency will the offer be made? What is the offer price per +security for the retail offer? AUD - Australian Dollar AUD 0.00500 Oversubscription & Scale back details Will individual +security holders be permitted to apply for more than their entitlement (i.e. to over-subscribe)? No Will a scale back be applied if the offer is over-subscribed? No Will all the +securities issued in this class rank equally in all respects from their issue date? Yes Options details +Security currency Exercise price Expiry date AUD - Australian Dollar AUD 0.1200 31/5/2028 Appendix 3B - Proposed issue of securities 4/6 Appendix 3B - Proposed issue of securities Details of the type of +security that will be issued if the option is exercised CDT : ORDINARY FULLY PAID Number of securities that will be issued if the option is exercised 1 fully paid ordinary share will be issued for every 1 option exercised. Please provide a URL link for a document lodged with ASX setting out the material terms of the +securities proposed to be issued or provide the information by separate announcement. Part 3C - Timetable 3C.1 +Record date 23/4/2025 3C.2 Ex date 22/4/2025 3C.4 Record date 23/4/2025 3C.5 Date on which offer documents will be sent to +security holders entitled to participate in the +pro rata issue 24/4/2025 3C.6 Offer closing date 16/5/2025 3C.7 Last day to extend the offer closing date 13/5/2025 3C.9 Trading in new +securities commences on a deferred settlement basis 19/5/2025 3C.11 +Issue date and last day for entity to announce results of +pro rata issue 23/5/2025 3C.12 Date trading starts on a normal T+2 basis 3C.13 First settlement date of trades conducted on a +deferred settlement basis and on a normal T+2 basis Appendix 3B - Proposed issue of securities 5/6 Appendix 3B - Proposed issue of securities Part 3E - Fees and expenses 3E.1 Will there be a lead manager or broker to the proposed offer? No 3E.2 Is the proposed offer to be underwritten? No 3E.3 Will brokers who lodge acceptances or renunciations on behalf of eligible +security holders be paid a handling fee or commission? No 3E.4 Details of any other material fees or costs to be incurred by the entity in connection with the proposed offer Legal fees, security registry fees, ASIC and ASX fees. Part 3F - Further Information 3F.1 The purpose(s) for which the entity intends to use the cash raised by the proposed issue Working capital 3F.2 Will holdings on different registers or subregisters be aggregated for the purposes of determining entitlements to the issue? No 3F.3 Will the entity be changing its dividend/distribution policy if the proposed issue is successful? No 3F.4 Countries in which the entity has +security holders who will not be eligible to participate in the proposed issue Australia and New Zealand 3F.5 Will the offer be made to eligible beneficiaries on whose behalf eligible nominees or custodians hold existing +securities No 3F.6 URL on the entity's website where investors can download information about the proposed issue 3F.7 Any other information the entity wishes to provide about the proposed issue 3F.8 Will the offer of rights under the rights issue be made under a +disclosure document or product disclosure statement under Chapter 6D or Part 7.9 of the Corporations Act (as applicable)? Yes Appendix 3B - Proposed issue of securities 6/6