Trubion Pharmaceuticals Announces Early Termination of HSR Waiting Period

Trubion Pharmaceuticals, Inc. (Nasdaq: TRBN) today announced that the U.S. Department of Justice and Federal Trade Commission granted early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 ("HSR Act"), as amended, with respect to the planned acquisition of Trubion by Emergent BioSolutions Inc. (NYSE: EBS) announced on Aug. 12, 2010. Accordingly, the requirement under the merger agreement for the expiration or termination of any waiting period under the HSR Act has been satisfied. The closing of the transaction still remains subject to other conditions in the definitive merger agreement, including approval by Trubion's stockholders.