Announcement PDF This appendix is available as an online form Only use this form if the online version is not available Rule 3.10.3A, 3.10.3B, 3.10.3C, 3.10.3D + See chapter 19 for defined terms 5 February 2024 Page 1 Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities Note: this form is also used to notify ASX where quoted options have been exercised or other quoted convertible securities have been converted and the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX. 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. If you are an entity incorporated outside Australia and you are issuing a new class of securities that will not have CDIs issued over them, you will need to obtain and provide an International Securities Identification Number (ISIN) for that class. Further information on the requirement for the notification of an ISIN is available from the Create Online Forms page. ASX is unable to create the new ISIN for non- Australian issuers. *Denotes minimum information required for first lodgement of this form, with exceptions provided in specific notes for certain questions. The balance of the information, where applicable, must be provided as soon as reasonably practicable by the entity. Part 1 – Entity and announcement details Question no Question Answer 1.1 *Name of entity We (the entity here named) give notice of the issue, conversion or payment up of the following unquoted +securities. TerraNova Metals Ltd (previously Castle Minerals Limited) 1.2 *Registration type and number Please supply your ABN, ARSN, ARBN, ACN or another registration type and number (if you supply another registration type, please specify both the type of registration and the registration number). ACN: 116095802 1.3 *ASX issuer code TNM 1.4 *This announcement is Tick whichever is applicable. ☒ A new announcement ☐ An update/amendment to a previous announcement ☐ A cancellation of a previous announcement 1.4a *Reason for update Mandatory only if “Update” ticked in Q1.4 above. A reason must be provided for an update. 1.4b *Date of previous announcement to this update Mandatory only if “Update” ticked in Q1.4 above. 1.4c *Reason for cancellation Mandatory only if “Cancellation” ticked in Q1.4 above. 1.4d *Date of previous announcement to this cancellation Mandatory only if “Cancellation” ticked in Q1.4 above. 1.5 *Date of this announcement 26 October 2026 This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 2 Part 2 – Type of issue Question No. Question Answer 2.1 *The +securities the subject of this notification are: Select whichever item is applicable. If you wish to notify ASX of different events involving unquoted securities, please complete a separate Appendix 3G for each event. ☒ +Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX ☐ +Securities issued under a +dividend or distribution plan that are not quoted, and are not intended to be quoted, on ASX ☐ Unquoted options that have been exercised or other unquoted +convertible securities that have been converted ☐ Quoted options that have been exercised or other quoted +convertible securities that have been converted where the +securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX ☐ Unquoted partly paid +securities upon which a call or instalment has been paid ☐ +Securities issued under an +employee incentive scheme that are subject to a restriction on transfer and are not being quoted on ASX until the restriction ends ☐ +Other securities issued under an +employee incentive scheme that are not intended to be quoted on ASX ☐ Other [please specify] If you have selected ‘other’ please explain the circumstances here: 2.1a *Date the +securities the subject of this notification were issued Answer this question if your response to Q2.1 is anything other than “Unquoted partly paid securities upon which a call or instalment has been paid”. 26 October 2026 2.2a.1 *Date of Appendix 3B notifying the market of the proposed issue of +securities the subject of this notification Answer this question if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX.” Appendix 3B (28 August 2026): • 12,000,000 OPTION EXPIRING 31- OCT-2028 EX $0.15 Appendix 3B (21 October 2026): • 16,700,000 PERFORMANCE RIGHTS - CLASS E • 8,500,000 OPTION EXPIRING 31-OCT- 2028 EX $0.15 This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 3 2.2a.2 *Are there any further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B? Answer this question if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX”. No 2.2a.2.1 *Please provide details of the further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B Answer this question if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX” and your response to Q2.2a.2 is “Yes”. Please provide details of the proposed dates and number of securities for the further issues. 2.2b.1 Date of Appendix 3A.1 lodged with ASX in relation to the underlying +dividend or distribution Answer this question if your response to Q2.1 is “Being issued under a dividend or distribution plan that are not quoted, and are not intended to be quoted, on ASX”. 2.2c.1 Please state the number and type of options that were exercised or other +convertible securities that were converted (including their ASX security code if available): Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”. 2.2c.2 And the date the options were exercised or other +convertible securities were converted: Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”. Note: If this occurred over a range of dates, enter the date the last of the options was exercised or convertible securities was converted. This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 4 2.2c.3 Is this all of the options or other +convertible securities on issue of that type (ie have all of those options now been exercised or have all of those +convertible securities now been converted)? Answer this question if your response to Q2.1 is ““Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”. Yes or No Note: If you have answered “No”, consider whether you need to lodge an Appendix 3H with ASX notifying ASX of the cessation of some or all of the remaining options or other convertible securities under Listing Rule 3.10.E. This may the case, for example, if options have lapsed because they have passed their expiry date without being exercised, or convertible debt securities have been repaid or redeemed without being converted. 2.2c.4 The right of the holder of the options or other +convertible securities to receive the +underlying securities is being satisfied by: Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”. ☐ An issue of new +securities ☐ A transfer of existing +securities ☐ A reclassification of the +convertible securities as securities in the same class as the +underlying securities 2.2c.5 The underlying securities being received by the holder are: Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted”. ☐ Already quoted by ASX ☐ Intended to be, but are not yet, quoted by ASX ☐ Are not, and are not intended to be, quoted by ASX 2.2c.6 The underlying securities being received by the holder are: Answer this question if your response to Q2.1 is “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”. ☐ Already quoted by ASX ☐ Are not, and are not intended to be, quoted by ASX 2.2c.7 *Were the options being exercised or other +convertible securities being converted issued under an +employee incentive scheme? Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”. Yes or No This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 5 2.2c.8 *Are any of the options being exercised or other +convertible securities being converted held by +key management personnel (KMP) or an +associate? Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”.” and your response to Q2.2c.7 is “Yes”. Yes or No 2.2c.8.a *Provide details of the KMP or +associates who are exercising options or converting +convertible securities. Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, your response to Q2.2c.7 is “Yes” and your response to Q2.2c.8 is “Yes”. Repeat the detail in the table below for each KMP involved. If the options or other convertible securities are held by the KMP, repeat the name of the KMP or insert “Same” in “Name of registered holder”. If the options or other convertible securities are held by an associate of a KMP, insert the name of the associate in “Name of registered holder”. Name of KMP Name of registered holder Number of options being exercised or other +convertible securities being converted 2.2d.1 Please state the number and type of partly paid +securities upon which a call or instalment has been paid (including their ASX security code if available)? Answer this question if your response to Q2.1 is “Unquoted partly paid securities upon which a call or instalment has been paid”. 2.2d.2 And the date upon which the call or instalment was paid: Answer this question if your response to Q2.1 is “Unquoted partly paid securities upon which a call or instalment has been paid”. Note: If this occurred over a range of dates, enter the date the last of the payments was made. 2.2d.3 Has the call or instalment been paid on all of the partly paid +securities in question? Answer this question if your response to Q2.1 is “Unquoted partly paid securities upon which a call or instalment has been paid”. Yes or No Note: If you have answered “No”, consider whether you need to lodge an Appendix 3H with ASX notifying ASX of the cessation of some or all of the remaining partly paid securities under Listing Rule 3.10.E. This may the case, for example, if partly paid securities that have not had the call paid by the due date will be cancelled. If you are an NL company, consider also whether you have notification obligations in relation to any forfeiture of the partly paid securities not paid up under Listing Rule 3.12. 2.2d.4 Are the securities on which the call or instalment was paid now fully paid? Yes or No This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 6 2.2e.1 Please state the number and type of +securities (including their ASX security code) issued under the +employee incentive scheme Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are subject to a restriction on transfer and are not being quoted on ASX until the restriction ends” or “Other securities issued under an employee incentive scheme that are not intended to be quoted on ASX”. 2.2e.2 *Please attach a document or provide details of a URL link for a document lodged with ASX detailing the terms of the +employee incentive scheme or a summary of the terms. Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are subject to a restriction on transfer and are not being quoted on ASX until the restriction ends” or “Other securities issued under an employee incentive scheme that are not intended to be quoted on ASX”. 2.2e.3 *Were any of the +securities issued to +key management personnel (KMP) or an +associate Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are subject to a restriction on transfer and are not being quoted on ASX until the restriction ends” or “Other securities issued under an employee incentive scheme that are not intended to be quoted on ASX”. Yes or No 2.2e.3.a *Provide details of the KMP or +associates being issued +securities. Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are subject to a restriction on transfer and are not being quoted on ASX until the restriction ends” or “Other securities issued under an employee incentive scheme that are not intended to be quoted on ASX” and your response to Q2.2e.3 is “Yes”. Repeat the detail in the table below for each KMP involved in the issue. If the securities are being issued to the KMP, repeat the name of the KMP or insert “Same” in “Name of registered holder”. If the securities are being issued to an associate of a KMP, insert the name of the associate in “Name of registered holder”. Name of KMP Name of registered holder Number of +securities 2.2f.1 *Were the +securities issued for a cash consideration? Answer this question if your response to Q2.1 is “Other”. If the securities are being issued for nil cash consideration, answer this question “No”. Yes or No 2.2f.1.a *In what currency was the cash consideration paid? Answer this question if your response to Q2.1 is “Other” and your response to Q2.2f.1 is “Yes”. For example, if the consideration is being paid in Australian Dollars, state AUD. This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 7 2.2f.1.b *What was the issue price per +security Answer this question if your response to Q2.1 is “Other” and your response to Q2.2f.1 is “Yes”, and by reference to the issue currency provided in your response to Q2.2f.1.a. Note: you cannot enter a nil amount here. If the securities are being issued for nil cash consideration, answer Q2.2f.1 as “No” and complete Q2.2f.1.c. 2.2f.1.c Please describe the consideration provided for the +securities Answer this question if your response to Q2.1 is “Other” and your response to Q2.2f.1 is “No”. 2.2f.2 *The purpose(s) for which the entity issued the +securities was: Answer this question if your response to Q2.1 is “Other”. You may select one or more of the items in the list. ☐ To raise additional working capital ☐ To fund the retirement of debt ☐ To pay for the acquisition of an asset [provide details below] ☐ To pay for services rendered [provide details below] ☐ Other [provide details below] Additional details: 2.2f.3 Please provide any further information needed to understand the circumstances in which you are notifying the issue of these +securities to ASX, including why the issue of the +securities has not been previously announced to the market in an Appendix 3B You must answer this question if your response to Q2.1 is “Other”. If there is no other information to provide, please answer “Not applicable” or “N/A”. 2.3a *This notification is given in relation to an issue of +securities in a class which is not quoted on ASX and which: Answer this question if your response to Q2.1 is anything other than “Unquoted options that have been exercised or other unquoted convertible securities that have been converted”, “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX” or “Unquoted partly paid securities upon which a call or instalment has been paid”. ☐ has an existing ASX security code ("existing class") ☒ does not have an existing ASX security code ("new class") 2.3b *The +securities being issued, transferred or re-classified as a result of the options being exercised or other +convertible securities being converted are: Answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”. ☐ securities that have already been quoted on ASX ("existing class") ☐ in a class which is not quoted on ASX but which has an existing ASX security code ("existing class") ☐ in a class which is not quoted on ASX and which does not have an existing ASX security code ("new class") This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 8 2.3c *The call or instalment the subject of this notification is being paid on +securities which are not quoted on ASX and which: Answer this question if your response to Q2.1 is “Unquoted partly paid securities upon which a call or instalment has been paid”. ☐ have an existing ASX security code ("existing class") ☐ do not have an existing ASX security code ("new class") Part 3A – number and type of +securities the subject of this notification (existing or new class) where issue has previously been notified to ASX in an Appendix 3B Answer the questions in this Part if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX”. Question No. Question Answer 3A.1 *ASX security code & description Two new class-codes to be confirmed OPTION EXPIRING 31-OCT-2028 EX $0.15 PERFORMANCE RIGHTS - CLASS E 3A.2 *Number of +securities issued/paid up 16,700,000 PERFORMANCE RIGHTS - CLASS E 20,500,000 OPTION EXPIRING 31-OCT-2028 EX $0.15 3A.3 Any other information the entity wishes to provide about the +securities the subject of this notification Part 3B – number and type of +securities the subject of this notification (existing class) where issue has not previously been notified to ASX in an Appendix 3B Answer the questions in this part if your response to Q2.1 is anything other than “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX” and your response to Q2.3a, 2.3b or 2.3c (as applicable) is “existing class”. If your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, the questions in this part relate to the securities issued, transferred or re-classified as a result of the exercise of the options or the conversion of the convertible securities. If your response to Q2.1 is “Unquoted partly paid securities upon which a call or instalment has been paid”, the questions in this part relate to the securities arising from that payment. Otherwise, the questions in this part relate to the securities issued by the entity which are the subject of this notification and which are described in the response to Q2.1. Question No. Question Answer 3B.1 *ASX security code & description This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 9 3B.2 *Number of +securities issued/transferred/reclassified/paid up 3B.3a *Will the +securities rank equally in all respects from their issue date with the existing issued +securities in that class? You do not need to answer this question if your response to Q2.1 is ““Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, and your response to Q2.2c.4 is “A transfer of existing securities” and your response to Q2.3b is “securities that have already been quoted on ASX”. Yes or No 3B.3b *Is the actual date from which the +securities will rank equally (non-ranking end date) known? You do not need to answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, your response to Q2.2c.4 is “A transfer of existing securities” and your response to Q2.3b is “securities that have already been quoted on ASX”. Otherwise answer this question if your response to Q3B.3a is “No”. Yes or No 3B.3c *Provide the actual non-ranking end date You do not need to answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, your response to Q2.2c.4 is “A transfer of existing securities” and your response to Q2.3b is “securities that have already been quoted on ASX”. Otherwise answer this question if your response to Q3B.3a is “No” and your response to Q3B.3b is “Yes”. 3B.3d *Provide the estimated non-ranking end period You do not need to answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, your response to Q2.2c.4 is “A transfer of existing securities” and your response to Q2.3b is “securities that have already been quoted on ASX”. Otherwise answer this question if your response to Q3B.3a is “No” and your response to Q3B.3b is “No”. This appendix is available as an online form Appendix 3G Notification of issue, conversion or payment up of unquoted equity securities + See chapter 19 for defined terms 5 February 2024 Page 10 3B.3e *Please state the extent to which the +securities do not rank equally: • in relation to the next dividend, distribution or interest payment; or • for any other reason Otherwise answer this question if your response to Q3B.3a is “No”. You do not need to answer this question if your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, your response to Q2.2c.4 is “A transfer of existing securities” and your response to Q2.3b is “securities that have already been quoted on ASX”. For example, the securities may not rank at all, or may rank proportionately based on the percentage of the period in question they have been on issue, for the next dividend, distribution or interest payment; or they may not be entitled to participate in some other event, such as an entitlement issue. 3B.4 Any other information the entity wishes to provide about the +securities the subject of this notification Part 3C – number and type of +securities the subject of this notification (new class) Answer the questions in this part if your response to Q2.1 is anything other than “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX” and your response to Q2.3a, 2.3b or 2.3c (as applicable) is “new class”. If your response to Q2.1 is “Unquoted options that have been exercised or other unquoted convertible securities that have been converted” or “Quoted options that have been exercised or other quoted convertible securities that have been converted where the securities received as a result of the exercise or conversion either are already quoted on ASX or are not intended to be quoted on ASX”, the questions in this part relate to the securities being issued, transferred or reclassified as a result of the exercise of the options or the conversion of the convertible securities. If your response to Q2.1 is “Unquoted partly paid securities upon which a call or instalment has been paid”, the questions in this part relate to the call paid or fully paid securities arising from that payment. Otherwise, the questions in this part relate to the securities issued by the entity which are the subject of this notification and which are described in the response to Q2.1. Question No. Question Answer 3C.1 *Security description 3C.2 *Security type Select one item from the list that best describes the securities the subject of this form. This will determine more detailed questions to be asked about the security later in this section. Select “ordinary fully or partly paid shares/units” for stapled securities or CDIs. For interest rate securities, please select the appropriate choice from either “Convertible debt securities” or “Non- convertible debt securities”. Select “Other” for performance shares/units and performance options/rights or if the selections available in the list do not appropriately describe the security being issued. ☐ Ordinary fully or partly paid shares/units ☐ Options ☐ +Convertible debt securities ☐ Non-convertible +debt securities ☐ Redeemable preference shares/units ☐ Other This appendix is available as an online form Appendi