Mr. Sam Martin has been Senior Vice President and Chief Financial Officer of Celldex Therapeutics, Inc since July 1, 2017. Mr. Martin served as Vice President of Finance at Celldex Therapeutics, Inc. since June 16, 2017 until July 1, 2017. Mr. Martin joined Celldex as the Director of Financial Reporting, Planning and Analysis in April 2009 and has held roles of increasing responsibility and leadership. Prior to joining Celldex, Mr. Martin served as the Director of Finance and Corporate Compliance for Alseres Pharmaceuticals, Inc., where he was responsible for managing the financial and SEC reporting and the annual budget and planning process. Mr. Martin began his career at Ernst & Young LLP, holding various positions prior to his tenure as Audit Manager, where he provided audit, review, due diligence and consulting services to public and private companies in the biotechnology, medical device, health care, high technology, manufacturing and consumer product industries. Mr. Martin received an M.B.A. from Boston University, a B.S. from Skidmore College and is a Certified Public Accountant.