X0303 4 2009-02-26 0 0001163348 ALLIED WORLD ASSURANCE CO HOLDINGS LTD AWH 0001368325 Redmond John T ALLIED WORLD ASSURANCE CO HOLDINGS, LTD 27 RICHMOND ROAD PEMBROKE, BERMUDA D0 HM 08 BERMUDA 0 1 0 0 Pres, AWAC (Eur) & AWAC (Rein) Common Shares 2009-02-26 4 A 0 15000 0.00 A 42257 D Common Shares 2009-02-28 4 F 0 769 38.41 D 41488 D Employee Stock Option (right to buy) 39.02 2009-02-26 4 A 0 1000 0.00 A 2010-02-26 2019-02-26 Common Shares 1000 1000 D Restricted Stock Units 2009-02-26 4 A 0 2000 0.00 A Common Shares 1000 2000 D Represents the Company's Common Shares that were earned pursuant to a 2006 LTIP award for no monetary consideration and which vested at 150% of target based on the achievement of pre-established performance criteria during the applicable three-year performance period established under the Company's Amended and Restated Long-Term Incentive Plan. Exclusively represents shares withheld by the Company with respect to the payment of withholding tax liability incurred upon the vesting of Restricted Stock Units. These securities vest in four equal annual installments with the first installment vesting on the date shown. Grant of Restricted Stock Units for no monetary consideration. 2,000 Restricted Stock Units convert into (i) 1,000 Common Shares of the Company and (ii) cash equal to the market value of 1,000 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. /s/ Wesley D. Dupont, by Power of Attorney 2009-03-02