X0306 4 2014-02-27 false 0001336917 Under Armour, Inc. UA 0001344637 Plank Kevin A 1020 HULL STREET BALTIMORE MD 21230 true true true false Chairman and CEO Class A Common Stock 2014-04-29 4 C false 102352 0 A 145898 D Class A Common Stock 2014-04-29 4 C false 6397 0 A 6397 I By KD Plank LLC Class A Common Stock 2014-04-29 4 C false 6397 0 A 6397 I KD Plank #2 LLC Class A Common Stock 2014-04-29 4 C false 73648 0 A 219546 D Class A Common Stock 2014-04-29 4 C false 4603 0 A 11000 I By KD Plank LLC Class A Common Stock 2014-04-29 4 C false 4603 0 A 11000 I KD Plank #2 LLC Class A Common Stock 2014-04-29 4 S false 102352 46.56 D 117194 D Class A Common Stock 2014-04-29 4 S false 6397 46.56 D 4603 I By KD Plank LLC Class A Common Stock 2014-04-29 4 S false 6397 46.56 D 4603 I KD Plank #2 LLC Class A Common Stock 2014-04-29 4 S false 73648 47.15 D 43546 D Class A Common Stock 2014-04-29 4 S false 4603 47.15 D 0 I By KD Plank LLC Class A Common Stock 2014-04-29 4 S false 4603 47.15 D 0 I KD Plank #2 LLC Class B Common Stock 2014-02-27 5 G false 3198476 0 A Class A Common Stock 3198476 3198476 I By Plank Family Trust Class B Common Stock 2014-02-27 5 G false 3198476 0 D Class A Common Stock 3198476 0 I By Annuity Trust Class B Common Stock 2014-04-29 4 C false 102352 0 D Class A Common Stock 102352 33653272 D Class B Common Stock 2014-04-29 4 C false 6397 0 D Class A Common Stock 6397 948253 I By KD Plank LLC Class B Common Stock 2014-04-29 4 C false 6397 0 D Class A Common Stock 6397 1272353 I KD Plank #2 LLC Class B Common Stock 2014-04-29 4 C false 73648 0 D Class A Common Stock 73648 33579624 D Class B Common Stock 2014-04-29 4 C false 4603 0 D Class A Common Stock 4603 943650 I By KD Plank LLC Class B Common Stock 2014-04-29 4 C false 4603 0 D Class A Common Stock 4603 1267750 I KD Plank #2 LLC Class B Common Stock is convertible at any time at the option of the reporting person into shares of Class A Common Stock on a one-for-one basis, and has no expiration date. On February 26, 2009, the reporting person contributed shares of Class B Common Stock to a grantor retained annuity trust for the benefit of himself and his minor children. Upon termination of the trust, on February 27, 2014, 3,198,476 of the shares were transferred to an irrevocable trust for the benefit of the reporting persons minor children. The remaining 74,254 shares were distributed to the reporting person and continue to be reported in this Form 4 as directly owned. Shares of Class B Common Stock automatically convert to Shares of Class A Common Stock effective immediately upon the sale of the Class B shares by the reporting person. Shares sold pursuant to a 10b5-1 trading plan. This transaction was executed in multiple trades at prices ranging from $46.02 to $47.01. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $47.02 to $47.42. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. All share amounts have been adjusted to reflect the two-for-one stock split effective April 14, 2014. /s/ John P. Stanton, Attorney in Fact for Kevin A. Plank 2014-05-01