VISTA GROUP INTERNATIONAL LIMITED. DISCLOSUREBeneficial Ownership (13D/G / major holdings)

SPH Notice - Investment Services Group Limited

100080615/3821102.1 1 Disclosure of beginning to have substantial holding Section 276, Financial Markets Conduct Act 2013 Note: This form must be completed in accordance with the instructions at the end of the form. To NZX and To Vista Group Limited Date this disclosure made:11/08/2026 Date on which substantial holding began:11/08/2026 Substantial product holder(s) giving disclosure Full name(s): Investment Services Group Limited Summary of substantial holding Class of quoted voting products: Ordinary Shares Summary for Investment Services Group Limited For this disclosure,— (a) total number held in class: 12,412,667 (b) total in class: 239,288,701 (c) total percentage held in class: 5.187% Details of relevant interests Devon Funds Management Limited and Clarity Funds Management Limited are subsidiaries of Investment Services Group Limited Details for Devon Funds Management Limited Nature of relevant interest(s): Related party of Investment Services Group Limited For this disclosure,— (a) number held in class: 11,754,316 (b) total in class: 239,288,701 (c) percentage held in class: 4.91% For personal use only 100080615/3821102.1 2 Details for Clarity Funds Management Limited Nature of relevant interest(s): Related party of Investment Services Group Limited For this disclosure,— (a) number held in class: 658,351 (b) total in class: 239,288,701 (c) percentage held in class: 0.28% Details of transactions and events giving rise to substantial holding Details of the transactions or other events requiring disclosure: Transactions between 8/05/2025 to 11/08/2026 For personal use only 100080615/3821102.1 3 Additional information Address(es) of substantial product holder(s): Level 17, 188 Quay Street, Auckland CBD, Auckland 1010 Contact details: Tim Chapman | P: 09 925 3990 | E: [email protected] Certification I, Tim Chapman, certify that, to the best of my knowledge and belief, the information contained in this disclosure is correct and that I am duly authorised to make this disclosure by all persons for whom it is made. For personal use only 100080615/3821102.1 4 Instructions General directions on how to use this form To use this form,— • replace the text in [square brackets] with the relevant information or with “not applicable”; and • type the i