Announcement PDF Notification of buy-back Announcement Summary Name of entity COGSTATE LTD Announcement type Update announcement Type of update Daily buy-back notification Date of this announcement 1/11/2023 Reason for update Daily buy-back notification ASX Security code and description of the class of +securities the subject of the buy-back CGS : ORDINARY FULLY PAID The type of buy-back is: On market buy-back Total number of +securities bought back before previous day 2,143,285 Total number of +securities bought back on previous day 52,125 Refer to next page for full details of the announcement Notification of buy-back 1/6 Notification of buy-back Part 1 - Entity and announcement details 1.1 Name of entity COGSTATE LTD We (the entity named above) provide the following information about our buy-back. 1.2 Registration number type Registration number ACN 090975723 1.3 ASX issuer code CGS 1.4 The announcement is Update/amendment to previous announcement 1.4a Type of update Daily buy-back notification 1.4b Reason for update Daily buy-back notification 1.4c Date of initial notification of buy-back 28/2/2023 1.4d Date of previous announcement to this update 31/10/2023 1.5 Date of this announcement 1/11/2023 1.6 ASX Security code and description of the class of +securities the subject of the buy-back CGS : ORDINARY FULLY PAID Notification of buy-back 2/6 Notification of buy-back Part 2 - Type of buy-back 2.1 The type of buy-back is: On market buy-back Notification of buy-back 3/6 Notification of buy-back Part 3 - Buy-back details Part 3A - Details of +securities, price and reason 3A.1 Total number of +securities on issue in the class of +securities to be bought back 173,459,998 3A.4 Does the entity intend to buy back a minimum number of +securities No 3A.5 Does the entity intend to buy back a maximum number of securities No 3A.6 Name of broker or brokers who will offer to buy back +securities on the entity's behalf Broker name: MA Moelis Australia Securities Pty Ltd 3A.9 Are the +securities being bought back for a cash consideration? Yes 3A.9a Is the price to be paid for +securities bought back known? No 3A.9a.1 In what currency will the buy-back consideration be paid? AUD - Australian Dollar Part 3B - Buy-back restrictions and conditions 3B.1 Does the buy-back require security holder approval? No Notification of buy-back 4/6 Notification of buy-back Part 3C - Key dates On-market buy-back 3C.2 Proposed buy-back start date 20/3/2023 3C.3 Proposed buy-back end date 19/3/2024 Part 3D - Other Information 3D.1 Any other information the entity wishes to notify to ASX about the buy-back In respect to Q3A.5 Does the entity intend to buy back a maximum number of securities: Cogstate Ltd intends to buy-back up to A$13 million of CGS ordinary shares on-market. Please refer to the ASX announcement titled 1H23 Financial Results & Business Update released on 28 February 2023. Notification of buy-back 5/6 Notification of buy-back Part 4 - Daily buy-back notification A daily buy-back notification must be submitted for Employee share scheme, On-market, Equal access share scheme and Other buy-backs at least half an hour before the commencement of trading on the +business day after any day on which +securities are bought back (per listing rule 3.8A) Please verify if the pre-populated values are accurate as they are only indicative based on previous online submissions. The pre-populated values may not be accurate if previous online submissions are still in-flight or in case of announcements made via a MS Word form. Whilst you may over-ride a pre-populated value, once over-ridden it will not be possible to retrieve the previously pre-populated value. 4.1 Date of this notification 1/11/2023 4.2 Previous day on which +securities were bought back 31/10/2023 Before previous day On previous day 4.3 Total number of +securities bought back, or in 2,143,285 relation to which acceptances have been received 52,125 4.4 Total consideration paid or payable for the +securities AUD 3,210,344.32000 AUD 76,644.60000 4.5 Highest price paid AUD 1.71500000 AUD 1.49000000 Date highest price was paid: 5/6/2023 4.6 Lowest price paid AUD 1.37500000 AUD 1.46000000 Date lowest price was paid: 27/10/2023 4.7 Highest price allowed to be paid by entity on the previous day under listing rule 7.33: AUD 1.50840000 4.8 If the entity has disclosed an intention to buy back a maximum number of +securities, the remaining number of +securities to be bought back as at the end of the previous day Notification of buy-back 6/6