X0203 3/A 2008-08-06 2008-08-07 0 0001336917 Under Armour, Inc. UA 0001215319 DEERING ANTHONY W 1020 HULL STREET BALTIMORE MD 21230 1 0 0 0 Class A Common Stock 669.56 D These shares were omitted from the reporting person's original Form 3, and also were omitted from the Form 4 filed by the reporting person after his original Form 3 was filed. By: /s/ John P. Stanton, Attorney in Fact For: Anthony W. Deering 2008-08-08