Jonathan Lewis, M.D., Ph.D.

Chief Executive Officer and Director

Jonathan Lewis, M.D., Ph.D is the chief executive officer and a director of ZIOPHARM Oncology. He served as Professor of Surgery and Medicine at Memorial Sloan-Kettering Cancer Center. He has been actively involved in leading translational and clinical research in cancer. He has helped develop several drugs in cancer. He has received numerous honors and awards in medicine and science, including the ASCO Young Investigator Award, the Kristen Carr Fellowship, the Yale University Ohse Award, the Royal College of Surgeons Trubshaw Medal, and the Sarcoma Foundation of America Hope and Vision Award. He serves as a Director on the Board of POPPA (the Police Organization Providing Peer Assistance) of the New York Police Department (NYPD). He serves on the Board of Trustees for the Hope Funds for Cancer Research and as Board Trustee for the Kate McGarrigle Foundation. He is on the Medical Advisory Board of the Sarcoma Foundation of America and on the Scientific Advisory Board of the Combat Wound Initiative Program of the Henry Jackson Foundation for the Advancement of Military Medicine.

Caesar J. Belbel

Executive Vice President, Chief Legal Officer and Secretary

Caesar J. Belbel joined ZIOPHARM Oncology in September 2011 as executive vice president, chief legal officer and secretary. He has extensive expertise in corporate and securities law and has represented numerous public and private companies in a variety of industries, including life sciences, biotechnology, software, internet services and venture capital. He has substantial experience counseling companies on general corporate law matters, complex financing transactions, mergers and acquisitions, securities law, corporate governance, regulatory affairs, licensing as well as intellectual property protection and transfer. Prior to joining ZIOPHARM Oncology, from 2003 to 2011, he was executive vice president, chief legal officer and secretary of Clinical Data, Inc., a biopharmaceutical company which was acquired in April 2011 by Forest Laboratories, Inc. Prior to Clinical Data, he served as senior vice president, general counsel and secretary of Xpedior Incorporated; and as general counsel and secretary for Programart Corporation and Astea International, Inc. Mr. Belbel also practiced as a corporate attorney in the emerging companies practice groups of Testa, Hurwitz & Thibeault and McDermott Will & Emery. He holds a bachelor’s degree from Columbia University in the City of New York and a juris doctor from Boston College Law School.

Lynn M. Ferrucci

Senior Vice President, Human Resources

Lynn M. Ferrucci joined ZIOPHARM Oncology in January 2012 as senior vice president of human resources. Ms. Ferrucci has over 20 years of experience in strategic and tactical human resource leadership, including extensive knowledge in mergers and acquisitions, organizational development and compensation as well as benefits. She has developed and implemented company-wide initiatives to motivate and retain employees, as well as directed human resource efforts to attract key talent. Prior to joining ZIOPHARM Oncology, Ms. Ferrucci was the senior vice president of human resources at Clinical Data, Inc., a biopharmaceutical company, which completed more than ten mergers/acquisitions during her tenure and was acquired by Forest Laboratories, Inc. Earlier in her career, Ms. Ferrucci worked in human resources within the manufacturing, service and consulting environments. She holds a bachelor’s degree in management from Rhode Island College.

Francois Lebel, M.D.

Senior Vice President, Clinical Development and Medical Operations

A proven leader with broad Drug and Device development experience who has designed and managed global medical organizations to deliver results, enhanced productivity and practice sound risk management. Senior leadership roles have included most recently Vice President, Research & Development at Baxter International and Global Head of Medical and Scientific Affairs at MedImmune. In the last 20 years, he provided strategic leadership on 8 NDA/BLA’s in various therapeutic areas and on a number of mergers and acquisitions. Extensive experience in Drug Development, Medical Affairs, Regulatory and Pharmacovigilance was acquired through various roles of increasing responsibilities at Chiron (Novartis), Warner- Lambert (Pfizer) and Burroughs Wellcome (GSK). Francois received his medical degree from the University of Ottawa, Canada. He is Board Certified in Internal Medicine and an Infectious Diseases specialist trained at McGill University and Harvard Medical School.