ARB CORPORATION LIMITED. DISCLOSUREInsider Transactions (Form 3/4/5)

Appendix 3X Ian Foston

ASX ANNOUNCEMENT 15 October 2026 APPENDIX 3X INITIAL DIRECTOR’S INTEREST NOTICE – IAN FOSTON Please find attached an Appendix 3X, Initial Director's Interest Notice, for Ian Foston, who was elected as a director of ARB Corporation Limited (the “Company”) at the Company's Annual General Meeting held earlier today. This notice is lodged in accordance with ASX Listing Rule 3.19A. This announcement was approved for release by the Company Secretary. For personal use only Appendix 3X Initial Director’s Interest Notice + See chapter 19 for defined terms. 11/3/2002 Appendix 3X Page 1 Rule 3.19A.1 Appendix 3X Initial 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 30/9/2001. Name of entity ARB Corporation Limited ABN 31 006 708 756 We (the entity) give ASX the following information under listing rule 3.19A.1 and as agent for the director for the purposes of section 205G of the Corporations Act. Name of Director Ian Robert Foston Date of appointment 15 October 2026 Part 1 - Director’s relevant interests in securities of which the director is the registered holder In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust Note: 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. Number & class of securities Nil For personal use only Appendix 3X Initial Director’s Interest Notice + See chapter 19 for defined terms. Appendix 3X Page 2 11/3/2002 Part 2 – Director’s relevant interests in securities of which the director is not the registered holder In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust Name of holder & nature of interest Note: Provide details of the circumstances giving rise to the relevant interest. N/A Number & class of Securities Part 3 – Director’s interests in contracts Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be d