Celgene Corp. has made senior management changes. Dr. Sol J. Barer currently chief executive officer, will serve as executive chairman of the board of directors through December 31, 2010, and Robert J. Hugin, currently president and chief operating officer, will be appointed chief executive officer. Dr. Barer has served as chief executive officer since May 2006. Prior to that, he served as president and chief operating officer. Additionally, Dr. Barer has served as director since 1994 and cha...