definiens: means, with respect to ONCOVIR, ( a ) a merger or c onsolidation of ONCOVIR with a third party which results in the vot ing securities of ONCOVIR outstanding immediately p rior thereto ceasing to represent at least fifty percent ( 50 % ) of the combined voting power of the survivin g entity or its ultimate parent entity immediately after such merge r or consolidation, ( b ) a transaction or series of related transactions in which one or more third parties, to gether with its or their Affiliates, becomes the ow ner of fifty percent ( 50 % ) or more of the combined voting power of ONCOVIR ’s outstanding securities other than thro ugh issuances by ONCOVIR of securities of ONCOVIR in a bona fide financing transaction or series of relate d bona fide financing transactions, or ( c ) the sale or oth er transfer to a third party of all or substantiall y all of ONCOVIR ’s assets or all or substantially all of ONCOVIR ’s bus iness to which this Agreement relates