X0306 5 2012-12-31 0 0 0 0001163348 Allied World Assurance Co Holdings, AG AWH 0001368443 Carmilani Scott A ALLIED WORLD ASSURANCE CO. HOLDINGS, AG LINDENSTRASSE 8 BAAR/ZUG V8 CH-6340 SWITZERLAND 1 1 0 0 President, CEO and Chairman Common Shares 2012-12-27 5 G 0 12000 0.00 D 352908 D Common Shares 2012-12-27 5 G 0 43000 0.00 D 309908 D Common Shares 2012-12-27 5 G 0 43000 0.00 A 43000 I By trust Of the shares gifted by the reporting person on December 27, 2012, 43,000 were gifted to an irrevocable trust for the benefit of the reporting person's spouse and children and 12,000 were gifted to an irrevocable trust for the benefit of the reporting person's siblings and their children. Represents 43,000 shares held by an irrevocable trust for the benefit of the reporting person's spouse and children. /s/ Wayne H. Datz, by Power of Attorney 2013-02-14