X0303 4 2010-09-27 1 0001298521 Trubion Pharmaceuticals, Inc TRBN 0001441848 ABBOTT BIOTHERAPEUTICS CORP 1500 SEAPORT BLVD. REDWOOD CITY CA 94063 0 0 1 0 Common Stock 2010-09-27 4 J 0 2243649 0 D 0 D This Form 4 relates to shares of common stock, par value $0.001 of Trubion Pharmaceuticals, Inc. ("Trubion Common Stock"). Facet Biotech Corporation, a Delaware Corporation (the "Company"), was acquired by Abbott Laboratories, an Illinois corporation ("Abbott"), pursuant to a transaction that was completed on April 21, 2010 (the "Acquisition"). Following the Acquisition, the Company's name was changed to Abbott Biotherapeutics Corp. In connection with the integration of the Company into Abbott following the Acquisition, on September 27, 2010, the Company transferred beneficial ownership of all 2,243,649 shares of Trubion Common Stock previously acquired by the Company as reported on Form 3 filed by the Company on September 3, 2009, to Abbott. John A. Berry, Assistant Secretary of Abbott Biotherapeutics Corp. 2010-09-27