Announcement PDF 603 Page 1 of 2 15 July 2001 Form 603 Corporations Act 2001 Section 671B Notice of initial substantial holder To Company Name/Scheme Cogstate Ltd ACN/ARSN 090 975 723 1. Details of substantial holder (1) Name Anacacia Pty Limited ACN/ARSN (if applicable) 159 223 659 The holder became a substantial holder on 29/01/2024 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 Ordinary Shares 10,424,974 Person's votes (5) Voting power (6) 10,424,974 6.1% 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 Anacacia Pty Limited Relevant interest under section 608(1) of the Corporations Act, being the registered holder of the securities 10,424,974 fully paid ordinary shares 4. Details of present registered holders The persons registered as holders of the securities referred to in paragraph 3 above are as follows: Holder of relevant interest Registered holder of securities Person entitled to be registered as holder (8) Anacacia Pty Limited Anacacia Pty Limited (as Trustee for Wattle Fund) N/A Class and number of securities 10,424,974 fully paid ordinary shares 5. Consideration The consideration paid for each relevant interest referred to in paragraph 3 above, and acquired in the four months prior to the day that the substantial holder became a substantial holder is as follows: Holder of relevant interest Date of acquisition Anacacia Pty Limited 22/09/2023 to 29/01/2024 Consideration (9) Cash Class and number of securities Non-cash $2,369,937.17 6. Associates The reasons the persons named in paragraph 3 above are associates of the substantial holder are as follows: Name and ACN/ARSN (if applicable) N/A Nature of association 1,707,165 603 Page 2 of 2 15 July 2001 7. Addresses The addresses of persons named in this form are as follows: Name Address Anacacia Pty Limited Suite 304, Level 3, 45 Cross Street, Double Bay, NSW 2028 Signature Print name Sign here Tom Granger Capacity Portfolio Manager Date 30/01/2024