X0306 4/A 2016-04-26 2016-04-28 false 0001336917 Under Armour, Inc. UAC 0001344637 Plank Kevin A 1020 HULL STREET BALITIMORE MD 21230 true true true false Chairman and CEO Class C Common Stock 2016-04-26 4 S false 200000 44.15 D 29522170 D This amendment corrects the transaction date, which was erroneously reported as 4/26/2015 on the original Form 4. /s/ John P. Stanton, Attorney in Fact for Kevin A. Plank 2016-05-02