X0306 4 2013-07-29 0 0001267395 ASPEN INSURANCE HOLDINGS LTD AHL 0001561510 Green Karen Ann ASPEN INSURANCE HOLDINGS LIMITED 141 FRONT STREET HAMILTON D0 HM19 BERMUDA 0 1 0 0 CEO AIUK Ltd AMAL Ltd Ordinary Shares 2013-07-29 4 F 0 100 37.385 D 19576 D Ordinary Shares 2013-07-29 4 S 0 2200 37.39 D 17376 D Ordinary Shares 2013-07-29 4 F 0 300 37.40 D 17076 D Ordinary Shares 2013-07-29 4 F 0 300 37.41 D 16776 D Ordinary Shares 2013-07-29 4 F 0 400 37.43 D 16376 D Ordinary Shares 2013-07-29 4 S 0 500 37.44 D 15876 D Ordinary Shares 2013-07-29 4 S 0 800 37.45 D 15076 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan established by the reporting person on June 28, 2013. /s/ Patricia Roufca as Attorney-in-fact for Karen Green 2013-07-30