X0303 4 2009-05-27 0 0001298521 Trubion Pharmaceuticals, Inc TRBN 0001366316 Mann David A 3651 55TH AVE. SW SEATTLE WA 98116 1 0 0 0 Common Stock 12935 D Stock option (right to purchase) 2.28 2009-05-27 4 A 0 5000 0.00 A 2019-05-27 Common stock 5000 5000 D Option vests 100% on May 26, 2010, subject to the individual's provision of service to the issuer on such date. /s/ Kathleen Deeley as attorney-in-fact for David A. Mann 2009-05-28