X0305 4/A 2012-05-14 2012-05-16 0 0001054905 INNOSPEC INC. IOSP 0001338883 Williams Patrick 8375 SOUTH WILLOW STREET LITTLETON CO 80124 0 1 0 0 Exec VP & President, Fuel Spec Common Stock 2012-05-14 2012-05-14 4 S 0 15713 29.48 D 126373 D Common Stock 2012-05-15 2012-05-15 4 S 0 9887 29.06 D 126373 D Common Stock 2012-05-15 2012-05-15 4 S 0 10313 29.06 D 126373 D Stock Options 4.07 2012-05-14 2012-05-14 4 M 0 15713 4.07 D 2012-04-02 2019-04-02 Common Stock 15713 237866 D Stock Options 4.07 2012-05-15 2012-05-15 4 M 0 9887 4.07 D 2012-04-02 2019-04-02 Common Stock 9887 227979 D Stock Options 4.62 2012-05-15 2012-05-15 4 M 0 10313 4.62 D 2012-03-24 2019-03-24 Common Stock 10313 217666 D The shares of Common Stock sold by the Reporting Person and reported herein were sold at a range of between $29.14 and $29.77 per share. The sale price reported represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent. The shares of Common Stock sold by the Reporting Person and reported herein were sold at a range of between $29.03 and $29.40 per share. The sale price reported represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent. The shares of Common Stock sold by the Reporting Person and reported herein were sold at a range of between $29.03 and $29.40 per share. The sale price reported represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent. Total includes trances in other options. 9887 remain outstanding in this trance in relation to options acquired pursuant to CSOP B 2 Apr 2009 Total reflects options in other trances only. Total includes trances in other options. 3964 remain outstanding in this trance in relation to options acquired pursuant to CSOP B 24 Mar 2009 NIcola Earl 2012-05-21