COGSTATE LTD DISCLOSUREBeneficial Ownership (13D/G / major holdings)

Change in substantial shareholding from AEF

t 02 8276 6288 e [email protected] p GPO Box Centre Sydney, GPO Box 8, Sydney NSW 2001 Australian Ethical Investment Ltd ABN 47 003 188 930 AFSL 229949 australianethical.com.au 20 August 2026 Market Announcements Office ASX Limited Exchange Centre 39 Martin Place SYDNEY NSW 2000 Notice of change of interests of substantial hold er Attached is a Form 60 4 Notice of change of interests of a substantial shareholder in relation to Cogstate Limited completed by Aus tralian Ethical Investment Limited. Yours faithfully, Authorised by Karen Hughes Company Secretary For personal use only Page1/3 Form 604 Corporations Act 2001 Section 671B Notice of change of interests of substantial holder To Company Name/Scheme COGSTATE LIMITED ACN/ARSN 090 975 723 1. Details of substantial holder (1) Name State Street Australia Ltd ACF Australian Ethical Investment Limited ABN 21 002 965 200 There was a change in the interests of the substantial holder on 18/08/2026 The previous notice was given to the company on 01/07/2026 The previous notice was dated 03/07/2026 Previous and present 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 when last required, and when now required, to give a substantial holding notice to the company or scheme, are as follows: Class of securities (4) Previous notice Present notice Person’s votes (5) Voting power (6) Person’s votes (5) Voting power (6) Ordinary Shares 13,583,230 8.00% 11,389,497 6.70% 2. Changes in relevant interests Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows: Date of Change Person whose relevant interest changed Nature of Change (6) Consideration given in relation to change (7) Class and number of securities affected Person's votes affected Please refer to Annexure A 3. Present relevant interests Particulars of each relevant interest of the substantial h