X0202 4 2008-02-26 0001097136 SENORX INC SENO 0001013425 TREU JESSE I C/O DOMAIN ASSOCIATES, LLC ONE PALMER SQUARE PRINCETON NJ 08542 1 0 0 0 Common Stock 2008-02-26 4 J 0 150000 D 1194783 I By Domain Partners IV, L.P. Common Stock 2008-02-26 4 J 0 31151 A 31151 I By One Palmer Square Associates IV, LLC Common Stock 2008-02-26 4 S 0 2750 8.43 D 21915 I By DP IV Associates, L.P. Distribution of shares by Domain Partners IV, L.P. to its partners. The Reporting Person is a managing member of One Palmer Square Associates IV, L.L.C., which is the sole general partner of Domain Partners IV, L.P. and DP IV Associates, L.P. Pursuant to Instruction 4(b)(iv) of Form 4, the Reporting Person has elected to report as indirectly beneficially owned the entire number of securities beneficially owned by each such entity. The Reporting Person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his or her pecuniary interest therein and/or that are not actually distributed to him or her. /s/Kathleen K. Schoemaker, Attorney-in-Fact 2008-02-26