X0306 4 2014-01-30 false 0001336917 Under Armour, Inc. UA 0001241750 MIRCHIN MATTHEW C 1020 HULL STREET BALTIMORE MD 21230 false true false false EVP Global Marketing Class A Common Stock 2014-01-30 4 A false 8000 0 A 11722 D In 2011, the reporting person was granted performance based restricted stock units tied to performance of the Company in 2012 and 2013. Based on the performance of the Company, the award will now vest in two equal annual installments beginning February 15, 2014. /s/ John P. Stanton, Attorney in Fact for: Matthew C. Mirchin 2014-02-03