Cubist Pharmaceuticals, Inc. Reports Third Quarter 2006 Results And First Profitable Quarter; GAAP Basic And Diluted Net Income $0.09 Per Share; Net Product Revenues $50.3 Million, Up 66% Vs. 3Q05

LEXINGTON, Mass.--(BUSINESS WIRE)--Cubist Pharmaceuticals, Inc. (Nasdaq: CBST) today reported results for the quarter ended September 30, 2006. Total revenues for the third quarter of 2006 were $50.4 million, compared to $31.8 million for the third quarter of 2005, up 58% year-over-year. This increase was attributable primarily to the significant growth in net product revenues which increased 66% year-over-year from $30.3 million for the third quarter of 2005 to $50.3 million for the third quarter of 2006.