SAN DIEGO & BRANFORD, Conn.--(BUSINESS WIRE)--Ligand Pharmaceuticals Incorporated (NASDAQ: LGND) and Neurogen Corporation (NASDAQ: NRGN) announced today they have amended their merger agreement to increase the merger consideration payable. In addition to issuing 4.2 million shares of Ligand common stock (the maximum number allowed by the original agreement) and four series of contingent value rights, Ligand will now also pay $600,000 cash to Neurogen stockholders upon closing of the transaction.
