SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Exelixis, Inc. (Nasdaq:EXEL) announced today that George Scangos, PhD, the company’s president and chief executive officer, will present at the JMP Securities Eighth Annual Research Conference at 1:30 p.m. EDT / 10:30 a.m. PDT on Wednesday, May 20, 2009. Dr. Scangos will discuss the company’s development pipeline and corporate strategy.