Announcement PDF MARKET RELEASE 12 May 2015 Cogstate Ltd TRADING HALT The securities of Cogstate Ltd (the “Company”) will be placed in Trading Halt Session State at the request of the Company, pending the release of an announcement by the Company. Unless ASX decides otherwise, the securities will remain in Trading Halt Session State until the earlier of the commencement of normal trading on Thursday, 14 May 2015 or when the announcement is released to the market. Security Code: CGS James Gerraty Manager, Listings Compliance (Melbourne) . COGSTaTE · lt.IPP.OVE 12 May2015 James Gerraty Advisor, Listings Compliance ASX Limited Level4 North Tower, Rialto 525 Collins Street Melbourne VIC 3000 Dear James Cogstate Ltd (Company) requests an immediate trading halt be granted by ASX with respect to its securities (ASX code: CGS). The trading halt is requested pending an announcement to the market in connection with a potential placement. In accordance with ASX Listing Rule 17.1 , the Company provides the following information: (a) The trading halt is necessary as otherwise trading in the Company's securities might occur while the market as a whole is not reasonably informed. (b) The Company requires the trading halt from 12 May 2015 and continuing until the earlier of the Company making an announcement to ASX concerning the potential placement and the commencement of trading on Thursday, 14 May 2015. (c) The Company expects an announcement concerning the potential placement will be made prior to the commencement of trading on Wednesday, 13 May 2015. (d) The Company is not aware of any reason why the trading halt should not be granted. (e) The Company is not aware of any other information necessary to inform the market about the trading halt. Yours faithfully (N~~v Claire Newstead-Sinclair Company Secretary L\314532211.2