George Elston

CFO, Optherion, Inc.

Mr. Elston became a Director of Celldex in March 2004 and is the Chief Financial Officer of Optherion, Inc., a privately held biopharmaceutical company located in New Haven, Connecticut. Mr. Elston has more than 20 years of financial and business expertise in the biotechnology and medical device industries. Before joining Optherion, Mr. Elston was with Elusys Therapeutics where he raised significant funding from government and private sources, completed multiple strategic collaborations with large pharmaceutical and biotechnology firms, and oversaw collaborations with the U.S. Department of Defense and the National Institutes of Health. Before joining Elusys, Mr. Elston was Chief Financial Officer of Trillium USA, Inc., where he established the financial and administrative functions for the Company’s multi-national operations. Previously, Mr. Elston was with C.R. Bard, Inc., an international manufacturer and distributor of medical devices, where he directed financial operations for multiple manufacturing facilities and successfully integrated strategic acquisitions; and with Price Waterhouse. Mr. Elston received his B.B.A. in Public Accounting from Pace University and is a Certified Public Accountant.