SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Exelixis, Inc. (NASDAQ:EXEL) announced today that Charles Butler, the company’s vice president of investor relations and corporate communications, will present at the Ninth Annual JMP Securities Research Conference at 1:30 p.m. PDT / 4:30 p.m. EDT on Monday, May 10, 2010 in San Francisco. Mr. Butler will discuss the company’s corporate strategy, development pipeline, and financial outlook.