X0306 4 2015-02-11 false 0001336917 Under Armour, Inc. UA 0001241750 MIRCHIN MATTHEW C 1020 HULL STREET BALTIMORE MD 21230 false true false false President of North America Class A Common Stock 2015-02-11 4 A false 36000 0 A 55263 D Class A Common Stock 2015-02-11 4 A false 24156 0 A 79419 D In 2012, the reporting person was granted performance based restricted stock units tied to performance of the Company in 2013 and 2014. Based on the performance of the Company, the award will now vest in two equal annual installments beginning February 15, 2015. In 2013, the reporting person was granted performance based restricted stock units tied to performance of the Company in 2013 and 2014. Based on the performance of the Company, the award will now vest in three equal annual installments beginning February 15, 2015. /s/ John P. Stanton, Attorney in Fact for: Matthew C. Mirchin 2015-02-12