definiens: means the consummation, after the Amendment Date, of a transaction or arelated series of transactions in which : ( a ) any Third Party becomes the beneficial owner, directly orindirectly, of more than 50 % of the total voting power of ATL ’s or ISIS ’ ( as applicable ) stock thenoutstanding normally entitled to vote in elections of directors ; ( b ) ATL or ISIS ( as applicable)consolidates with or merges into a Third Party, or any Third Party consolidates with or merges into ATLor ISIS, in either event pursuant to a transaction in which more than 50 % of the total voting power of thestock outstanding of the surviving entity normally entitled to vote in elections of directors is not held byPersons holding at least 50 % of the outstanding voting stock of ATL or ISIS preceding suchconsolidation or merger ; or ( c ) ATL or ISIS conveys, transfers or leases all or a substantial portion of itsassets relating to ATL 1102, VLA4 Compounds, Other VLA4 Compounds or VLA4 Products to a ThirdParty