Announcement PDF | Page 1 ASX Announcement 14 September 2026 2026 AGM – Access Letter, Notice of Meeting and Sample Proxy Cogstate (ASX.CGS) attaches the following documents in relation to FY2026 Annual General Meeting (“AGM”): • Shareholder Access Letter; • Notice of Meeting; and • Sample Proxy. Shareholders are reminded that the AGM is being held as a Hybrid Meeting, with instruction provided in the attached Notice of Meeting. This announcement was authorised for release by a sub-committee of the Board of Directors of Cogstate Ltd. For further information contact: investor@cogstate.com About Cogstate Cogstate Ltd (ASX: CGS) is a neuroscience technology company optimising brain health assessments to advance the development of new medicines and to enable earlier clinical insights in healthcare. Cogstate technologies provide rapid, reliable and highly sensitive computerised cognitive tests across a growing list of domains and support partners in the delivery of electronic clinical outcome assessment (eCOA) solutions to replace costly and error-prone paper assessments with real-time data capture. The company’s clinical trials solutions include quality assurance services for study endpoints that combine innovative operational approaches, advanced analytics and scientific consulting. For over 20 years, Cogstate has proudly supported the leading-edge research needs of biopharmaceutical companies and academic institutions, and the clinical care needs of physicians and patients around the world. In the Healthcare market, Cogstate seeks to provide primary care physicians and consumers with brief, accurate and scientifically validated digital measures of cognition, with a focus on easy to use, self-administered tests that inform patients and save physician time. For more information, please visit www.cogstate.com. 1 4 September 2026 Cogstate Limited 2026 Annual General Meeting The 2026 Annual General Meeting (AGM) of Cogstate Limited (ASX: CGS) (Cogstate or Company) will be held as a hybrid meeting at 10:00am AEDT on Thursday, 15 October 2026, being at Level 13, 664 Collins Street, Docklands VIC 3008 and as a virtual meeting (Meeting). Notice of AGM The Company will not be dispatching physical copies of the Notice of Meeting unless the shareholder has made a valid election to receive documents in hard copy. Instead, the Notice of Meeting and accompanying explanatory statement are being made available to shareholders electronically: 1. at https://www.asx.com.au/markets/trade-our-cash-market/announcements.cgs; 2. at https://investors.cogstate.com/announcements; or 3. by contacting the Joint Company Secretary on companysecretary@cogstate.com or +613 9664 1300. The Notice of Meeting and accompanying explanatory statement should be read in their entirety. If shareholders are in doubt as to how they should vote, they should seek advice from their professional advisers prior to voting. Business and Resolutions at the AGM The business and resolutions of the AGM, as outlined in the Notice of Meeting, are:  Adoption of the Annual Financial Report for the Financial Year ended 30 June 2026 (tabled as ordinary business for discussion and not as a resolution);  Resolution 1: Adoption of Remuneration Report;  Resolution 2: Election of Mr Darryl Inns as Director;  Resolution 3: Approval of Issue of Performance Rights to Mr Bradley O’Connor, Managing Director and Chief Executive Officer; and  Resolution 4: Approval to Increase the Maximum Aggregate Amount of Non-Executive Directors’ Fees. Your vote is important The business of the AGM affects your shareholding and your vote is important. Shareholders are encouraged to attend in person, virtually or by proxy. Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 2 Attending the Meeting in person To attend in person, please arrive at the Meeting venue before the time on the date set out above. Attending the Meeting virtually The Company is pleased to provide shareholders with the opportunity to attend and participate in a virtual Meeting through an online meeting platform powered by Automic. Shareholders who have an existing account with Automic will be able to watch, listen and vote online. Shareholders who do not have an account with Automic are strongly encouraged to register for an account as soon as possible and well in advance of the Meeting to avoid any delays on the day of the Meeting. An account can be created via the following link https://portal.automic.com.au/investor/home and then clicking on “register” and following the prompts. Shareholders will require their holder number (Securityholder Reference Number (SRN) or Holder Identification Number (HIN)) to create an account with Automic. To access the virtual meeting on the day: 1. Open your internet browser and go to https://portal.automic.com.au/investor/home. 2. Login with your username and password or click “register” if you have not already created an account. Shareholders are encouraged to create an account prior to the start of the Meeting to ensure there is no delay in attending the virtual meeting 3. After logging in, a banner will display at the bottom of your screen to indicate that the Meeting is open for registration, click on “Register” when this appears. Alternatively, click on “Meetings” on the left-hand menu bar to join the Meeting. 4. Click on “Join Meeting” and follow the prompts on screen to register and vote. Shareholders will be able to vote (see “Voting virtually at the Meeting” below) and ask questions at the virtual meeting. Asking Questions A discussion will be held on all items to be considered at the AGM. To ensure that as many shareholders as possible have the opportunity to speak, shareholders are requested to observe the following:  all questions should be stated clearly and should be relevant to the AGM business;  if a shareholder has more than one question on an item, all questions should be asked at the one time; and  shareholders should not ask questions at the AGM regarding personal matters or those that are commercial in confidence. Shareholders are also encouraged to submit questions in advance of the Meeting to the Company on any matter that may be relevant to the Meeting, by asking questions of the Directors or our external auditor. To allow time to collate questions and prepare answers, please submit any questions by 10:00am AEDT Thursday, 8 October 2026. You can send your question to the Company Secretary by email to companysecretary@cogstate.com. The Company will attempt to address the more frequently asked questions in the Chair and CEO’s presentations to the AGM. Shareholders will also have the opportunity to submit written or oral questions via the virtual meeting platform on the day of the meeting. Questions will be collated, and during the Meeting, the Chair of the Meeting will seek to address as many of the more frequently raised topics as possible. However, there may not be sufficient time available at the Meeting to address all topics raised. Please note that individual responses will not be sent to shareholders. The Chair’s and the Managing Director’s presentations will be uploaded to Cogstate’s website and the ASX platform prior to the Meeting. For a detailed overview of Cogstate’s performance and operations for the year ended 30 June 2026, the Company encourages you to read the FY2026 Annual Report prior to the Meeting. The FY2026 Annual Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 3 Report can also be found on Cogstate’s website or the ASX website. Voting virtually at the Meeting Shareholders who wish to vote virtually on the day of the Meeting may do so through the online meeting platform powered by Automic. Shareholders who wish to vote virtually on the day of the AGM will need to login to the online meeting platform powered by Automic. To vote virtually, please follow the instructions below: 1. Access the virtual meeting (see the “Accessing the Virtual Meeting powered by Automic” section of this Notice of Meeting above) 2. When the Chair of the Meeting declares the poll open, select the “Voting” dropdown menu on the right- hand side of your screen 3. Select either the “Full” or “Allocate” option to access your electronic voting card. 4. Follow the prompts to record your voting direction for each resolution and click “Submit votes”. For allocated votes, the number of votes submitted must not exceed your remaining available units. Important: Votes cannot be amended once submitted. It is recommended that Shareholders wishing to attend the Meeting login 30 minutes before the meeting. For further information on the live voting process please see the Registration and Voting Guide at https://www.automicgroup.com.au/virtual-agms. Voting by proxy at the Meeting If you are a Shareholder and unable to attend the Meeting, you are entitled to appoint a proxy to attend the Meeting and to vote on your behalf. A proxy need not be a Shareholder and may be an individual or a body corporate. If you are a Shareholder entitled to cast two or more votes, you may appoint up to two proxies to attend the Meeting and vote on a poll, and may specify the proportion of voting rights or the number of votes each proxy is appointed to exercise. If you appoint two proxies and the appointment does not specify the proportion or number of votes each proxy may exercise, each proxy may exercise half of your votes. To vote by proxy at the Meeting, please use one of the following methods to lodge the Proxy Form that is attached to this Notice: Online Lodge the Proxy Form online at https://singleholding.automic.com.au/login by following the instructions: Login to the Automic website using the holding details as shown on the Proxy Form. Click on ‘View Meetings’ – ‘Vote’. To use the online lodgement facility, Shareholders will need their holder number (Securityholder Reference Number (SRN) or Holder Identification Number (HIN)) as shown on the front of the Proxy Form. For further information on the online proxy lodgement process please see the Online Proxy Lodgement Guide at https://www.automicgroup.com.au/virtual-agms. By post Completing the enclosed Proxy Form and posting it to: Automic, GPO Box 5193, Sydney NSW 2001 By hand Completing the enclosed Proxy Form and delivering it by hand to: Automic, Level 5, 126 Phillip Street, Sydney NSW 2000 By email Completing the enclosed Proxy Form and emailing it to: meetings@automicgroup.com.au Your Proxy instruction must be received no later than 48 hours before the commencement of the Meeting. Proxy Forms received later than this time will be invalid. BY ORDER OF THE BOARD Yours sincerely, Darren Watson | Joint Company Secretary Cogstate Limited Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 4 About Cogstate Cogstate Ltd (ASX: CGS) is a neuroscience technology company optimising brain health assessments to advance the development of new medicines and to enable earlier clinical insights in healthcare. Cogstate technologies provide rapid, reliable and highly sensitive computerised cognitive tests across a growing list of domains and support partners in the delivery of electronic clinical outcome assessment (eCOA) solutions to replace costly and error-prone paper assessments with real-time data capture. The company’s clinical trials solutions include quality assurance services for study endpoints that combine innovative operational approaches, advanced analytics and scientific consulting. For over 20 years, Cogstate has proudly supported the leading-edge research needs of biopharmaceutical companies and academic institutions, and the clinical care needs of physicians and patients around the world. In the Healthcare market, Cogstate seeks to provide primary care physicians and consumers with brief, accurate and scientifically validated digital measures of cognition, with a focus on easy to use, self-administered tests that inform patients and save physician time. For more information, please visit www.cogstate.com. Important Notices Past performance Past performance is given for illustrative purposes only and should not be relied upon as (and is not) an indication of Cogstate's views on its future financial performance or condition. Past performance of Cogstate cannot be relied upon as an indicator of (and provides no guidance as to) the future performance of Cogstate. Nothing contained in this announcement, nor any information made available to you is, or shall be relied upon as, a promise, representation, warranty or guarantee, whether as to the past, present or future. Future performance and forward-looking statements This announcement contains certain “forward-looking statements”. The words “expect”, “anticipate”, “estimate”, “intend”, “believe”, “guidance”, “should”, “could”, “may”, “will”, “predict”, “plan” and other similar expressions are intended to identify forward-looking statements. Indications of, and guidance on, future earnings and financial position and performance are also forward-looking statements. Forward-looking statements, opinions and estimates provided in this announcement are based on assumptions and contingencies that are subject to change without notice and involve known and unknown risks and uncertainties and other factors that are beyond the control of Cogstate, its directors and management. Forward-looking statements are provided as a general guide only and should not be relied upon as an indication or guarantee of future performance. Actual results, performance or achievements may differ materially from those expressed or implied in such statements and any projections and assumptions on which these statements are based. These statements may assume the success of Cogstate's business strategies, including that the results of any of those strategies will be realised in the period for which the forward- looking statement may have been prepared or otherwise. For example, Cogstate's performance in any one financial period is sensitive to whether or not contracts are signed in that period, or a subsequent period, and the rate of enrolment in trials of its customers, which are influenced by factors that are outside of Cogstate's control. Readers are cautioned not to place undue reliance on forward-looking statements and except as required by law or regulations, none of Cogstate, its representatives or advisers, assumes any obligation to update these forward-looking statements. No representation or warranty, express or implied, is made as to the accuracy, likelihood of achievement or reasonableness of any forecasts, prospects, returns or statements in relation to future matters contained in this announcement. The forward-looking statements are based on information available to Cogstate as at the date of this announcement. Except as required by law or regulation (including the ASX Listing Rules), none of Cogstate, its representatives or advisers undertakes any obligation to provide any additional or updated information, whether as a result of a change in expectations or assumptions, new information, future events or results or otherwise. Indications of, and guidance or outlook on, future earnings or financial position or performance are also forward-looking statements. Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 Cogstate Ltd Level 32, 367 Collins Street Melbourne VIC 3000 www.cogstate.com Cogstate Ltd 15 October 2026 10:00AM AEDT As a Hybrid Meeting Address: Pitcher Partners Level 13, 664 Collins Street Docklands VIC 3008 and and as a virtual meeting This Notice of Meeting should be read in its entirety. If Shareholders are in doubt as to how they should vote, they should seek advice from their professional advisers prior to voting. Notice of 2026 Annual General Meeting Explanatory Statement | Proxy Form Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 2 Contents Venue and Voting Information 3 Notice to Facilitate Electronic Communications with Shareholders 6 Notice of Annual General Meeting – Agenda and Resolutions 7 Notice of Annual General Meeting – Explanatory Statement 11 Glossary 18 Annexure A - Summary of Key Terms of the Employee Equity Plan (Resolution 3) 20 Annexure B - Summary of the Material Terms of the Performance Rights (Resolution 3) 23 Proxy Form Separate Important Information for Shareholders about the Company’s 2026 AGM This Notice is given based on circumstances as at 4 September 2026. Accordingly, should circumstances change, the Company will make an announcement on the ASX market announcements platform and on the Company’s website at https://www.cogstate.com/. Shareholders are urged to monitor the ASX announcements platform and the Company’s website. The online platform will allow Shareholders to listen to the proceedings, view the presentations and ask questions of the Board and vote in real-time. Please note that each resolution considered at the Meeting will be determined on a poll. Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 3 Venue and Voting Information The Annual General Meeting of the Shareholders to which this Notice of Meeting relates will be held at 10:00am AEDT on Thursday, 15 October 2026 as a hybrid meeting, being at Level 13, 664 Collins Street, Docklands VIC 3008 and as a virtual meeting. To be able to hold this Meeting at both a physical and virtual venue, the Company is relying upon s249R(b) of the Corporations Act. Accessing the Virtual Meeting powered by Automic The Company is pleased to provide Shareholders with the opportunity to attend and participate in a virtual Meeting through an online meeting platform powered by Automic. Shareholders who have an existing account with Automic will be able to watch, listen and vote online. Shareholders who do not have an account with Automic are strongly encouraged to register for an account as soon as possible and well in advance of the Meeting to avoid any delays on the day of the Meeting. An account can be created via the following link https://portal.automic.com.au/investor/home and then clicking on “register” and following the prompts. Shareholders will require their holder number (Securityholder Reference Number (SRN) or Holder Identification Number (HIN)) to create an account with Automic. To access the virtual meeting on the day: 1. Open your internet browser and go to https://portal.automic.com.au/investor/home. 2. Login with your username and password or click “register” if you have not already created an account. Shareholders are encouraged to create an account prior to the start of the Meeting to ensure there is no delay in attending the virtual meeting 3. After logging in, a banner will display at the bottom of your screen to indicate that the Meeting is open for registration, click on “Register” when this appears. Alternatively, click on “Meetings” on the left-hand menu bar to join the Meeting. 4. Click on “Join Meeting” and follow the prompts on screen to register and vote. Shareholders will be able to vote (see the “Voting virtually” section of this Notice of Meeting below) and ask questions at the virtual meeting. Asking Questions A discussion will be held on all items to be considered at the AGM. To ensure that as many shareholders as possible have the opportunity to speak, shareholders are requested to observe the following:  all questions should be stated clearly and should be relevant to the AGM business;  if a shareholder has more than one question on an item, all questions should be asked at the one time; and  shareholders should not ask questions at the AGM regarding personal matters or those that are commercial in confidence. Shareholders are also encouraged to submit questions in advance of the Meeting to the Company on any matter that may be relevant to the Meeting, by asking questions of the Directors or our external auditor. Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 4 To allow time to collate questions and prepare answers, please submit any questions by 10:00am AEDT Thursday, 8 October 2026. You can send your question to the Company Secretary by email to companysecretary@cogstate.com. The Company will attempt to address the more frequently asked questions in the Chair and CEO’s presentations to the AGM. Shareholders will also have the opportunity to submit written or oral questions via the virtual meeting platform on the day of the meeting. Questions will be collated, and during the Meeting, the Chair of the Meeting will seek to address as many of the more frequently raised topics as possible. However, there may not be sufficient time available at the Meeting to address all topics raised. Please note that individual responses will not be sent to shareholders. The Chair’s and the Managing Director’s presentations will be uploaded to Cogstate’s website and the ASX platform prior to the Meeting. For a detailed overview of Cogstate’s performance and operations for the year ended 30 June 2026, the Company encourages you to read the FY2026 Annual Report prior to the Meeting. The FY2026 Annual Report can also be found on Cogstate’s website or the ASX website. Your vote is important The business of the Annual General Meeting affects your shareholding, and your vote is important. Voting in person To vote in person, attend the Annual General Meeting on the date and at the place set out above. Voting virtually at the Meeting Shareholders who wish to vote virtually on the day of the AGM will need to login to the online meeting platform powered by Automic. To vote virtually, please follow the instructions below: 1. Access the virtual meeting (see the “Accessing the Virtual Meeting powered by Automic” section of this Notice of Meeting above) 2. When the Chair of the Meeting declares the poll open, select the “Voting” dropdown menu on the right-hand side of your screen 3. Select either the “Full” or “Allocate” option to access your electronic voting card. 4. Follow the prompts to record your voting direction for each resolution and click “Submit votes”. For allocated votes, the number of votes submitted must not exceed your remaining available units. Important: Votes cannot be amended once submitted. It is recommended that Shareholders wishing to attend the Meeting login 30 minutes before the meeting. For further information on the live voting process please see the Registration and Voting Guide at https://www.automicgroup.com.au/virtual-agms/ Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 5 Voting by proxy To vote by proxy, please use one of the following methods: Online Lodge the Proxy Form online at https://singleholding.automic.com.au/login by following the instructions: Login to the Automic website using the holding details as shown on the Proxy Form. Click on ‘View Meetings’ – ‘Vote’. To use the online lodgement facility, Shareholders will need their holder number (Securityholder Reference Number (SRN) or Holder Identification Number (HIN)) as shown on the front of the Proxy Form. For further information on the online proxy lodgement process please see the Online Proxy Lodgement Guide at https://www.automicgroup.com.au/virtual-agms/ By post Completing the enclosed Proxy Form and posting it to: Automic, GPO Box 5193, Sydney NSW 2001 By hand Completing the enclosed Proxy Form and delivering it by hand to: Automic, Level 5, 126 Phillip Street, Sydney NSW 2000 By email Completing the enclosed Proxy Form and emailing it to: meetings@automicgroup.com.au Your Proxy instruction must be received not later than 48 hours before the commencement of the Meeting. Proxy Forms received later than this time will be invalid. Power of Attorney If the proxy form is signed under a power of attorney on behalf of a shareholder, then the attorney must make sure that either the original power of attorney or a certified copy is sent with the proxy form, unless the power of attorney has already provided it to the Share Registry. Corporate Representatives If a representative of a corporate shareholder or a corporate proxy will be attending the Meeting, the representative should bring to the Meeting adequate evidence of their appointment, unless this has previously been provided to the Share Registry. Technical difficulties Technical difficulties may arise during the course of the Annual General Meeting. The Chair has discretion as to whether and how the Meeting should proceed in the event that a technical difficulty arises. In exercising his discretion, the Chair will have regard to the number of Shareholders impacted and the extent to which participation in the business of the Meeting is affected. Where the Chair considers it appropriate, the Chair may continue to hold the Meeting and transact business, including conducting a poll and voting in accordance with valid proxy instructions. For this reason, Shareholders are encouraged to lodge a proxy not later than 48 hours before the commencement of the Meeting. If it becomes necessary to make further alternative arrangements, the Company will provide shareholders with as much notice as is practicable. Further information will be made available on the Company's website and ASX platform. Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 6 Notice to Facilitate Electronic Communications with Shareholders Recent legislative changes to the Corporations Act 2001 (Cth) mean there are new options available to Cogstate Ltd shareholders as to how you receive communications from the Company. Cogstate Ltd will no longer be sending physical meeting documents unless you request a copy to be posted. Shareholders can still elect to receive some or all of their communications in physical or electronic form, or elect not to receive certain documents such as annual reports. To review your communications preferences, or sign up to receive your shareholder communications via email, please update your details at the Automic website (https://portal.automic.com.au/investor/home) with your username and password. Providing your email address to receive shareholder communications electronically The Company encourages all shareholders to provide an email address so we can communicate with you electronically when shareholder notices become available online, for items such as meeting documents and annual reports. By providing your email address, you will:  support the company by reducing the cost of mailing/postage;  receive your investor communications faster and in a more secure way; and  help the environment through the need for less paper How do I create an account with Automic? To create an account with Automic, please go to the Automic website (https://portal.automic.com.au/investor/home), click on ‘register’ and follow the steps. Shareholders will require their holder number (Securityholder Reference Number (SRN) or Holder Identification Number (HIN)) to create an account with Automic. If you are a shareholder and would like a physical copy of a communication, need further information about the options available to you or have questions about your holding, visit https://www.automicgroup.com.au/investor-services or contact the Automic Registry: By post Automic, GPO Box 5193, Sydney NSW 2001 In person Automic, Level 5, 126 Phillip Street, Sydney NSW 2000 Telephone (within Australia) 1300 288 664 Telephone (outside Australia) +61 2 9698 5414 By facsimile +61 2 8583 3040 Email hello@automicgroup.com.au Website https://www.automicgroup.com.au/ Docusign Envelope ID: A77EA218-BAF2-8DF8-80B4-76BBB479DC12 7 Notice of Annual General Meeting Notice is hereby given that an Annual General Meeting of Shareholders of Cogstate Ltd ACN 090 975 723 will be held at 10:00am AEDT on Thursday, 15 October 2026 as a hybrid meeting, being at Level 13, 664 Collins Street, Docklands VIC 3008 and as a virtual meeting. The Explanatory Statement to this Notice of Meeting provides additional information on matters to be considered at the Annual General Meeting. The Explanatory Statement and the Proxy Form forms part of this Notice of Meeting. The Directors have determined pursuant to Regulation 7.11.37 of the Corporations Regulations 2001 (Cth) that the persons eligible to vote at the Annual General Meeting are those who are registered Shareholders at 7:00pm AEDT on Tuesday, 13 October 2026. In accordance with clause 40(a) of the Company’s Constitution, the Chair intends to call a poll on each of the resolutions proposed at the AGM. Each resolution considered at the AGM will therefore be conducted by a poll, rather than on a show of hands. The Chair considers voting by poll to be in the interests of the shareholders as a whole and is a way to ensure the views of as many shareholders as possible are represented at the meeting. Terms and abbreviations used in this Notice of Meeting and Explanatory Statement are defined in the Glossary. Agenda Ordinary business Financial statements and reports “To receive and to consider the Annual Financial Report of the Company for the financial year ended 30 June 2026 together with the declaration of the Directors, the Directors’ Report, the Remuneration Report and the Auditor’s Report for that financial year.” Note: This item of ordinary business is for discussion only and is not a resolution. Pursuant to the Corporations Act, Shareholders will be given a reasonable opportunity at the Meeting to ask questions about, or make comments in relation to, each of the aforementioned reports during consideration of these items. Resolutions Ordinary business Remuneration Report 1. Resolution 1 – Adoption of Remuneration Report To consider and, if thought fit, to pass with or without amendment, the following resolution as an Ordinary Resolution: “That, for the purpose of Section 250R(2) of the Corporations Act and for all other purposes, approval is given for the adoption of the Remuneration Report as contained in the Company’s Annual Financial Report for the financial year ended 30 June 2026.” Note: The vote on this Resolution is advisory only and does