CATALYST METALS LIMITED DISCLOSUREInsider Transactions (Form 3/4/5)

Change of Director's Interest Notice

Appendix 3Y Change of Director’s Interest Notice + See chapter 19 for defined terms. 01/01/2011 Appendix 3Y Page 1 Rule 3.19A.2 Appendix 3Y Change of Director’s Interest Notice Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public. Introduced 30/09/01 Amended 01/01/11 Name of entity Catalyst Metals Limited ABN 54 118 912 495 We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act. Name of Director James Champion de Crespigny Date of last notice 14 May 2026 Part 1 - Change of director’s relevant interests in securities In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust. In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part. Direct or indirect interest Direct and Indirect Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest Melvista 1 Pty Ltd (Melvista A/C) – Trust Beneficiary Date of change 12-14 August 2026 Number of securities held prior to change 2,885,833 Fully paid ordinary shares 106,838 STI Performance Rights 427, 350 LTI Performance Rights 3,000,000 Production Incentive Rights 164,722 FY25 STI Performance Rights 658,889 FY25 LTI Performance Rights 121,147 FY26 LTI Performance Rights Class STI Performance Rights LTI Performance Rights Fully paid ordinary shares For personal use only Appendix 3Y Change of Director’s Interest Notice + See chapter 19 for defined terms. 01/01/2011 Appendix 3Y Page 2 Number acquired 1. 534,188 fully paid ordinary shares were acquired on conversion of 106,838 STI Performance Rights and 427,350 LTI Performance Rights following achievement of vesting conditions Number disposed 1. 106,838, STI Performance Rights and 427,350 LTI Performance Rights were converted into fully paid ordinary shares 2. 1,000,000 fully paid ordinary shares were disposed of through on market trades Value/Consideration Note: If consideration is non-cash, provide details and estimat