X0306 4 2015-09-21 0 0000891293 CTI BIOPHARMA CORP ctic 0001204264 SINGER JACK W 3101 WESTERN AVE SUITE 600 SEATTLE WA 98121 1 1 0 0 EVP, Global Medical Affairs Common Stock 2015-09-21 4 A 0 205931 0 A 1466850 D As disclosed by CTIC in a form 8-K filed on 1/31/14, CTIC granted a bonus opportunity to the reporting person that is payable in shares of CTIC common stock upon the achievement of certain performance goals. This transaction reflects the issuance of common stock by CTIC pursuant to the award in connection with CTIC's determination that the Pacritinib Phase III goal under the award has been satisfied. By: Louis A. Bianco, Attorney-in-fact For: Jack W. Singer 2015-09-23