X0203 3/A 2010-05-12 2010-05-17 0 0001141719 ALTERRA CAPITAL HOLDINGS Ltd ALTE 0001490179 Berger John R. C/O ALTERRA CAPITAL HOLDINGS LIMITED ALTERRA HOUSE, 2 FRONT STREET HAMILTON, BERMUDA D0 HM 11 BERMUDA 1 1 0 0 CEO of Reinsurance Common Shares 506935 D This Amendment to the Form 3 filed by the Reporting Person on May 17, 2010 is being filed to correct the number of common shares of Alterra Capital Holdings Limited held by the Reporting Person. Bernard K. Asirifi, Attoney-in-Fact 2010-06-22