X0304 4 2012-03-02 0 0000714603 DST SYSTEMS INC DST 0001017403 ALLINSON A EDWARD STATE STREET BOSTON CORP 225 FRANKLIN STREET BOSTON MA 02110 1 0 0 0 Common Stock 2012-03-02 4 M 0 5000 48.23 A 68392 D Common Stock 2012-03-02 4 F 0 4684 53.415 D 63708 D Stock Option (right to buy) 48.23 2012-03-02 4 M 0 5000 48.23 D 2005-05-09 2012-05-14 Common Stock 5000 0 D This number is an aggregate of the number of shares of Issuer common stock that the Reporting Person surrendered to the Issuer in payment of the exercise price of the option and the number of shares of Issuer common stock that were withheld from the shares being purchased in order to satisfy the Reporting Person's tax withholding obligation. The surrender and withholding of shares ("Allowable Transactions") occurred in accordance with procedures of the Compensation Committee of the Issuer's Board of Directors, which approved the Reporting Person's Allowable Transactions at the time it granted the options to him. Randall D. Young for A. Edward Allinson by power of attorney 2012-03-06