LEXINGTON, Mass.--(BUSINESS WIRE)--Cubist Pharmaceuticals, Inc. (NASDAQ: CBST) today announced that it will issue its second quarter 2009 financial results at 4:00 p.m. ET on Thursday, July 16th, 2009, one day earlier than previously indicated. In connection with this announcement, Cubist will host a conference call and live audio webcast (with slides) at 5:00 p.m. ET that same day to discuss its second quarter financial results, business activities, and financial outlook.