Celldex Therapeutics, Inc. (Nasdaq: CLDX) today announced that Anthony S. Marucci, President and Chief Executive Officer of Celldex Therapeutics, Inc., will present at the Jefferies 2011 Global Healthcare Conference in New York City on Tuesday, June 7, 2011 at 11:00 a.m. ET. A live webcast of the company’s presentation will be available online on the “Presentations” page of the “Investors” section of the Celldex website at http://www.celldextherapeutics.com and will be archived for 30 days following the event.

About Celldex Therapeutics, Inc.

Celldex Therapeutics is the first antibody-based combination immunotherapy company. Celldex has a pipeline of drug candidates in development for the treatment of cancer and other difficult-to-treat diseases based on its antibody focused Precision Targeted Immunotherapy Platform. The PTI Platform is a complementary portfolio of monoclonal antibodies, antibody-targeted vaccines and immunomodulators used in optimal combinations to create novel disease-specific drug candidates. For more information, please visit http://www.celldextherapeutics.com.