SAN DIEGO--(BUSINESS WIRE)--Ligand Pharmaceuticals Incorporated (NASDAQ: LGND) announced today plans to report first quarter 2011 financial results on Tuesday, May 10, 2011, following the close of market. Ligand’s President and CEO, John Higgins, Executive Vice President and Chief Operating Officer, Matthew Foehr and Vice President of Finance and CFO, John Sharp will host the conference call.