ARB CORPORATION LIMITED. DISCLOSUREBeneficial Ownership (13D/G / major holdings)

Becoming a substantial holder

Form 603 Corporations Law Section 671B Notice of initial substantial holder To: Company Name/Scheme ARB CORPORATION LIMITED ACN/ARSN 006 708 756 1. Details of substantial holder (1) Name: UBS Group AG and its related bodies corporate ACN/ARSN (if applicable) The holder became a substantial holder on: 25 August 2026 2. Details of voting power The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2) had a relevant interest (3) in on the date the substantial holder became a substantial holder are as follows: Class of securities (4) Number of securities Persons’ votes (5) Voting power (6) Ordinary 4,272,930 4,272,930 5.11% 3. Details of relevant interests The nature of the relevant interest the substantial holder or an associate had in the following voting securities on the date the substantial holder became a substantial holder are as follows: Holder of relevant interest Nature of relevant interest (7) Class and number of securities UBS AG Australia Branch Power to control disposal over shares pursuant to stock borrowing and lending activities 1,429,792 Ordinary UBS AG London Branch Power to control disposal over shares pursuant to stock borrowing and lending activities 594 Ordinary Prime Broker that has exercised its borrowing right in respect of shares pursuant to a Prime Broking Agreement 5,185 Ordinary Beneficial Owner 4 Ordinary UBS Asset Management (Australia) Ltd Fund Manager with power to exercise control over voting shares 773,274 Ordinary UBS Asset Management (Europe) S.A. Fund Manager with power to exercise control over voting shares 594 Ordinary UBS Asset Management (UK) Limited Fund Manager with power to exercise control over voting shares 954 Ordinary UBS Asset Management Switzerland AG Fund Manager with power to exercise control over voting shares 4,567 Ordinary UBS Fund Management (Switzerland) AG Fund Mana