Shares of Exelixis (EXEL -13%) were hammered today after the biotech firm announced plans to...

|By:, SA News Editor

Shares of Exelixis (EXEL -13%) were hammered today after the biotech firm announced plans to hold back-to-back public offerings. It plans to offer, subject to market conditions, 20M common shares and an aggregate $225M of convertible senior subordinated notes due in 2019.