Celldex Therapeutics Announces 6.5M Share Offering

Celldex Therapeutics, Inc.

today announced that it is offering 6.5 million shares of its common stock in a proposed underwritten public offering. The offering is subject to market conditions and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering. The shares will be issued pursuant to a prospectus supplement to be filed as part of a shelf registration statement filed with the Securities and Exchange Commission (SEC) on Form S-3. Jefferies LLC and Leerink Swann LLC are acting as the joint book-running managers and underwriters for the proposed offering. A shelf registration statement relating to the shares was filed with the SEC and is effective. A preliminary prospectus supplement related to the offering will be filed with the SEC and will be available on the SEC's website located at http://www.sec.gov. Copies of the preliminary prospectus supplement and the accompanying prospectus relating to this offering may be obtained from Jefferies LLC, Attention: Equity Syndicate Prospectus Department, 520 Madison Avenue, 12th Floor, New York, NY, 10022, by telephone at 877-547-6340 or by email at Prospectus_Department@Jefferies.com or from