GenSpera, Inc. announced that Craig A. Dionne, Ph.D., has resigned as GenSpera's Chairman of the Board and as a Director, and has submitted a notice of termination as GenSpera's CEO and CFO, all effective immediately. Peter E. Grebow PhD., a GenSpera Director, has been appointed Interim Chairman. Russell Richerson Ph.D., GenSpera's Chief Operating Officer and Secretary, has been named Interim Principal Executive Officer and Principal Accounting Officer.

Dr. Grebow, PhD., has served as a Director of Genspera since May 2012, and has significant corporate governance and public company experience. He currently serves as Executive Vice President of Research and Development at Eagle Pharmaceuticals, Inc. Dr. Grebow held several key positions with Cephalon, Inc. (now Teva Pharmaceuticals), including Executive Vice President, Cephalon Ventures, Executive Vice President, Technical Operations, Senior Vice President, Worldwide Business Development and Senior Vice President, Drug Development. Additionally, Dr. Grebow served as a director of Optimer Pharmaceuticals from February 2009 until October 2013.