X0306 4 2013-04-30 1 0001533040 RXi Pharmaceuticals Corp RXII 0001390478 Galena Biopharma, Inc. 310 N. STATE STREET SUITE 208 LAKE OSWEGO OR 97034 0 0 1 0 Common Stock, $0.0001 par value 2013-04-30 4 S 0 171000 0.2138 D 33305595 D Common Stock, $0.0001 par value 2013-05-01 4 S 0 659500 0.1925 D 32646095 D Common Stock, $0.0001 par value 2013-05-02 4 S 0 253000 0.1905 D 32393095 D The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $0.21 to $0.22, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (2) and (3) to this Form 4. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $0.19 to $0.21, inclusive. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $0.19 to $0.1905, inclusive. Galena Biopharma, Inc., By: /s/ Ryan M. Dunlap, Director of Finance, Controller 2013-05-02