LEXINGTON, Mass.--(BUSINESS WIRE)--Cubist Pharmaceuticals, Inc. (NASDAQ: CBST) will issue its first quarter 2012 financial results at 4:00 p.m. ET on Wednesday, April 18th, 2012. 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 first quarter financial results, business activities, and financial outlook.