LEXINGTON, Mass.--(BUSINESS WIRE)--June 7, 2006--Cubist Pharmaceuticals, Inc. (Nasdaq: CBST - News) today announced that William Pullman, M.D., Ph.D., has joined the company as Senior Vice President and Chief Medical Officer. Dr. Pullman will be a member of the company’s Executive Team. In this new position, Dr. Pullman will oversee both clinical development and medical affairs.