X0204 3 2012-03-01 0 0001163348 Allied World Assurance Co Holdings, AG AWH 0001543667 Bender John ALLIED WORLD ASSURANCE CO. HOLDINGS, AG LINDENSTRASSE 8 BAAR/ZUG V8 CH-6340 SWITZERLAND 0 1 0 0 Pres. & COO, Allied World Re. Common Shares 31582 D Restricted Stock Units Common Shares 750 D Restricted Stock Units Common Shares 1750 D Restricted Stock Units Common Shares 1066 D Restricted Stock Units Common Shares 3120 D Employee Stock Options (right to buy) 61.51 2021-02-22 Common Shares 5390 D On February 26, 2009, the reporting person was granted 3,000 Restricted Stock Units for no monetary consideration. The Restricted Stock Units convert into (i) 1,500 of the Company's common shares and (ii) cash equal to the market value of 1,500 Common Shares (measured at the date of vesting) upon the vesting of such Restricted Stock Units. The Restricted Stock Units vest in four equal annual installments with the first installment vesting on February 26, 2010. On February 22, 2010, the reporting person was granted 3,500 Restricted Stock Units for no monetary consideration. The Restricted Stock Units convert into cash equal to the market value of 3,500 Common Shares (measured at the date of vesting) upon the vesting of such Restricted Stock Units. The Restricted Stock Units vest in four equal annual installments with the first installment vesting on February 22, 2011. On February 22, 2011, the reporting person was granted 1,420 Restricted Stock Units for no monetary consideration. The Restricted Stock Units convert into (i) 710 of the Company's common shares and (ii) cash equal to the market value of 710 Common Shares (measured at the date of vesting) upon the vesting of such Restricted Stock Units. The Restricted Stock Units vest in four equal annual installments with the first installment vesting on February 22, 2012. On February 22, 2012, the reporting person was granted 3,120 Restricted Stock Units for no monetary consideration. The Restricted Stock Units convert into (i) 624 of the Company's common shares and (ii) cash equal to the market value of 2,496 Common Shares (measured at the date of vesting) upon the vesting of such Restricted Stock Units. The Restricted Stock Units vest in four equal annual installments with the first installment vesting on February 22, 2013. These Employee Stock Options vest in four equal annual installments with the first installment vesting on February 22, 2012. /s/ John R. Bender 2012-03-12