Senior Management

Scott Koenig, M.D., Ph.D.
President and CEO and Director

Dr. Koenig has been our President and Chief Executive Officer and a director since September 2001 and was one of our co-founders. Prior to joining MacroGenics, Dr. Koenig served as Senior Vice President of Research at MedImmune Inc., where he participated in the selection and maturation of their product pipeline. From 1984 to 1990, he worked in the Laboratory of Immunoregulation at the National Institute of Allergy and Infectious Diseases at the National Institutes of Health, where he investigated the immune response to retroviruses and studied the pathogenesis of AIDS. Dr. Koenig currently serves as Chairman of the Board of Directors of Applied Genetic Technologies Corporation (NASDAQ: AGTC) and is a member of the Board of Directors of GlycoMimetics (NASDAQ: GLYC), the International Biomedical Research Alliance, and the Biotechnology Innovation Organization (BIO). He also serves as co-chair of the Scientific Advisory Board of the Institute for Bioscience and Biotechnology Research (IBBR) at the University of Maryland. Dr. Koenig received his A.B. and Ph.D. from Cornell University and his M.D. from the University of Texas Health Science Center in Houston. We believe that Dr. Koenig's detailed knowledge of our company and his over 30 years in research and the biotechnology industry provide a valuable contribution to our board of directors.

James Karrels
Senior Vice President, Chief Financial Officer and Secretary

Mr. Karrels, Senior Vice President, Chief Financial Officer and Corporate Secretary, joined us in May 2008 and has over 25 years of experience in finance, with a significant portion of that time working for, or on behalf of, life sciences companies. Prior to joining us, he served as Executive Director of Finance at Jazz Pharmaceuticals, Inc., where he was responsible for the company’s financial planning and analysis and investor relations activities. Prior to joining Jazz Pharmaceuticals, Mr. Karrels was in the Global Healthcare Investment Banking Group at Merrill Lynch, serving most recently as a Director. Mr. Karrels holds an M.B.A. from Stanford University and a B.B.A. from the University of Notre Dame.

Jon Wigginton, M.D.
Senior Vice President, Clinical Development & Chief Medical Officer

Dr. Wigginton joined us as Senior Vice President, Clinical Research in August 2013 and was promoted to Chief Medical Officer in March 2016. Dr. Wigginton was previously the Therapeutic Area Head, Immuno-Oncology, Early Clinical Research and Executive Director, Discovery Medicine-Clinical Oncology at Bristol-Myers from October 2008 to August 2013. While there, he led the early clinical development of the Bristol-Myers’ Immuno-Oncology portfolio including anti-PD-1 and anti-PD-L1. Prior to joining Bristol-Myers, Dr. Wigginton was the Director of Clinical Oncology at Merck Research Laboratories from May 2006 to October 2008, where he led early- and late-stage clinical development teams for small molecules and biologics. During his academic career, Dr. Wigginton held several positions at the National Cancer Institute Center for Cancer Research (NCI-CCR), including Head of Investigational Biologics Section, Pediatric Oncology Branch. Dr. Wigginton received his M.D. and B.S. in Biology from the University of Michigan.

Ezio Bonvini, M.D.
Senior Vice President, Research and Chief Scientific Officer

Dr. Bonvini, Senior Vice President, Research and Chief Scientific Officer, joined us in June 2003. From 1985 to 2003, Dr. Bonvini was with the FDA in the Center for Biologics Evaluation and Research, or CBER, which is responsible for regulating therapeutic monoclonal antibodies and other proteins, ultimately serving as Acting Deputy Director, Division of Monoclonal Antibodies and Chief, Laboratory of Immunobiology. From 1982 to 1984, Dr. Bonvini was a Visiting Fellow at the National Cancer Institute at the National Institutes of Health. Dr. Bonvini received a Diploma in Science from the Scientific Lyceum in Genoa, Italy, and his M.D. and Specialty Certification in Clinical Hematology from the University of Genoa, School of Medicine.

Eric Risser
Senior Vice President, Business Development & Portfolio Management and Chief Business Officer

Mr. Risser, Senior Vice President, Business Development & Portfolio Management and Chief Business Officer, joined us in March 2009. Prior to joining us, Mr. Risser held the position of Senior Director, Business Development in the pharmaceutical group at Johnson & Johnson, where he worked from 2003 to 2009. Before Johnson & Johnson, Mr. Risser started and built a consulting practice that provided counsel to emerging life science companies in the United States and Europe. Earlier in his career, Mr. Risser held venture capital and investment banking positions with BA Venture Partners and Lehman Brothers Holdings Inc., respectively. Mr. Risser holds an M.B.A. from Stanford University and a B.A. from Yale University.

Tom Spitznagel, Ph.D.
Senior Vice President, BioPharmaceutical Development and Manufacturing

Dr. Spitznagel, Senior Vice President, BioPharmaceutical Development and Manufacturing, joined us in 2013.  He has overall responsibility for both biopharmaceutical development and manufacturing of MacroGenics’ Fc-optimized monoclonal antibodies and Dual-Affinity Re-Targeting (DART®) antibody-like molecules, as well as facilities.  Prior to joining us, he was at Human Genome Sciences, most recently serving as Vice President of BioPharmaceutical Development, where he was responsible for oversight of Analytical Development, Formulation and Drug Delivery, Purification Sciences, and Fermentation and Cell Culture Sciences.  Prior to joining HGS, Dr. Spitznagel was a Senior Scientist at Nabi from 1996-1998, and a Staff Engineer at Genetics Institute from 1992-1996.  Dr. Spitznagel earned his BS in Chemical Engineering at M.I.T, and his Ph.D. in Chemical Engineering at the University of California, Berkeley.

Lynn Cilinski
Vice President, Controller and Treasurer

Ms. Cilinski, Vice President, Controller and Treasurer, joined us in October 2003. Prior to joining us, Ms. Cilinski spent a year as a consultant to various companies providing services to the government. Prior to that, she spent more than 20 years with Covanta Energy Inc. (formerly Ogden Corporation) where she held the position of Corporate Controller for four subsidiary companies that provided services to the federal government. Ms. Cilinski holds a B.S. from Strayer University.

Jeffrey Peters
General Counsel

Jeffrey Peters, General Counsel, joined us in August 2015 as Vice President, Deputy General Counsel. Before joining MacroGenics, Mr. Peters most recently served as Deputy General Counsel, Health, for the Biotechnology Innovation Organization (BIO), the leading national trade association for the biotechnology industry. While at BIO, Mr. Peters served as the primary legal counsel on health regulatory and related matters, including legal and policy matters affecting all aspects of biopharmaceutical product discovery, development, and delivery. Prior to BIO, Mr. Peters was with MedImmune, the global biologics arm of AstraZeneca. From 2005 through 2013, Mr. Peters had positions of increasing responsibility in the MedImmune legal department, culminating as Vice President and Deputy General Counsel. Mr. Peters was in private practice for almost a decade, joining MedImmune from the life sciences practice group at Latham & Watkins LLP, in Washington, D.C. Mr. Peters holds a J.D. from the University of Pennsylvania Law School and a B.A. in both Politics and Literature from Brandeis University.