X0202 4 2006-10-23 0 0001298521 Trubion Pharmaceuticals, Inc TRBN 0001328093 FHM III, LLC 601 UNION STREET SUITE 3200 SEATTLE WA 98101 0 0 1 0 0001328279 Frazier Healthcare III, LP 601 UNION STREET SUITE 3200 SEATTLE WA 98101 0 0 1 0 0001328291 Frazier Affiliates III, LP 601 UNION STREET SUITE 3200 SEATTLE WA 98101 0 0 1 0 0001281153 FHM IV LP TWO UNION SQUARE 601 UNION STREET STE 3200 SEATTLE WA 98101 0 0 1 0 0001140366 FRAZIER HEALTHCARE IV LP 0 0 1 0 0001161015 FRAZIER AFFILIATES IV LP 0 0 1 0 Common Stock 2006-10-23 4 C 0 4268 A 4373 I By Frazier Affiliates III, L.P. Common Stock 2006-10-23 4 C 0 8003 A 8134 I By Frazier Affiliates IV, L.P. Common Stock 2006-10-23 4 C 0 567434 A 581283 I By Frazier Healthcare III, L.P. Common Stock 2006-10-23 4 C 0 1575983 A 1601766 I By Frazier Healthcare IV, L.P. Series A Preferred Stock 0 2006-10-23 4 C 0 2572 D 2006-10-23 2006-10-23 Common Stock 2572 0 I By Frazier Affiliates III, L.P. Series A Preferred Stock 0 2006-10-23 4 C 0 3243 D 2006-10-23 2006-10-23 Common Stock 3243 0 I By Frazier Affiliates IV, L.P. Series A Preferred Stock 0 2006-10-23 4 C 0 341877 D 2006-10-23 2006-10-23 Common Stock 341877 0 I By Frazier Healthcare III, L.P. Series A Preferred Stock 0 2006-10-23 4 C 0 638701 D 2006-10-23 2006-10-23 Common Stock 638701 0 I By Frazier Healthcare IV, L.P. Series B Preferred Stock 2006-10-23 4 C 0 1696 D 2006-10-23 2006-10-23 Common Stock 1696 0 I By Frazier Affiliates III, L.P. Series B Preferred Stock 2006-10-23 4 C 0 4760 D 2006-10-23 2006-10-23 Common Stock 4760 0 I By Frazier Affiliates IV, L.P. Series B Preferred Stock 2006-10-23 4 C 0 225557 D 2006-10-23 2006-10-23 Common Stock 225557 0 I By Frazier Healthcare III, L.P. Series B Preferred Stock 2006-10-23 4 C 0 937282 D 2006-10-23 2006-10-23 Common Stock 937282 0 I By Frazier Healthcare IV, L.P. 1-for-1 conversion of preferred stock into common stock effective on the closing of the Issuer's initial public offering. These securities are owned directly by the entity listed. Frazier Affiliates III, L.P. and Frazier Healthcare III, L.P. , are joint filers. The designated filer, FHM III, LLC, serves as the general partner of Frazier Affiliates III, L.P. and Frazier Healthcare III, L.P. FHM III, LLC disclaims beneficial ownership of the reported securities, except to the extent of its proportionate pecuniary interest therein. These securities are owned directly by the entity listed. Frazier Affiliates IV, L.P. and Frazier Healthcare IV, L.P. , are joint filers. FHM IV, L.P., also a joint filer, serves as the general partner of Frazier Affiliates IV, L.P. and Frazier Healthcare IV, L.P. FHM IV, L.P. disclaims beneficial ownership of the reported securities, except to the extent of its proportionate pecuniary interest therein. Exhibit 99.1 - Joint Filer Information FHM III, LLC, By: Frazier & Company, Inc., Its Managing Member, By: Alan D. Frazier, President 2006-10-25