X0306 4 2015-08-28 0 0000891293 CTI BIOPHARMA CORP CTIC 0001204264 SINGER JACK W 3101 WESTERN AVENUE SUITE 600 SEATTLE WA 98121 1 1 0 0 EVP, Global Medical Affairs Common Stock 2015-08-28 4 S 0 300 1.55 D 1275619 D Common Stock 2015-08-28 4 S 0 750 1.56 D 1274869 D Common Stock 2015-08-28 4 S 0 50 1.565 D 1274819 D Common Stock 2015-08-28 4 S 0 1700 1.57 D 1273119 D Common Stock 2015-08-28 4 S 0 6200 1.58 D 1266919 D Common Stock 2015-08-28 4 S 0 1200 1.585 D 1265719 D Common Stock 2015-08-28 4 S 0 4200 1.59 D 1261519 D Common Stock 2015-08-28 4 S 0 200 1.595 D 1261319 D Common Stock 2015-08-28 4 S 0 300 1.6 D 1261019 D Common Stock 2015-08-28 4 S 0 100 1.605 D 1260919 D The sale was effected pursuant to a Rule 10b5-1 trading plan. By: Louis A. Bianco Attorney-in-fact For: Jack W. Singer 2015-08-28