X0306 4 2016-02-22 0 0001163348 Allied World Assurance Co Holdings, AG AWH 0001601782 James Julian ALLIED WORLD ASSURANCE CO. HOLDINGS, AG GUBELSTRASSE 24, PARK TOWER, 15TH FLOOR ZUG V8 6300 SWITZERLAND 0 1 0 0 President, Global Markets Restricted Stock Units 2016-02-22 4 A 0 4371 A Common Shares 4371 40756 D Grant of Restricted Stock Units for no monetary consideration. Restricted Stock Units convert into (i) 3,497 common shares of the Company and (ii) cash equal to the market value of 874 common shares (measured at the date of vesting) upon the vesting of such Restricted Stock Units. The Restricted Stock Units vest in four equal installments with the first installment vesting on February 22, 2017. Represents Restricted Stock Units held by the reporting person that vest in whole or in part in cash. /s/ Theodore Neos, by Power of Attorney 2016-02-24