X0306 4 2014-02-04 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 2014-02-04 4 C false 74696 0 A 101562 D Class A Common Stock 2014-02-04 4 C false 4668 0 A 4668 I By KD Plank LLC Class A Common Stock 2014-02-04 4 C false 4668 0 A 4668 I KD Plank #2 LLC Class A Common Stock 2014-02-04 4 C false 12904 0 A 114466 D Class A Common Stock 2014-02-04 4 C false 807 0 A 5475 I By KD Plank LLC Class A Common Stock 2014-02-04 4 C false 807 0 A 5475 I KD Plank #2 LLC Class A Common Stock 2014-02-04 4 C false 400 0 A 114866 D Class A Common Stock 2014-02-04 4 C false 25 0 A 5500 I By KD Plank LLC Class A Common Stock 2014-02-04 4 C false 25 0 A 5500 I KD Plank #2 LLC Class A Common Stock 2014-02-04 4 S false 74696 104.87 D 40170 D Class A Common Stock 2014-02-04 4 S false 4668 104.87 D 832 I By KD Plank LLC Class A Common Stock 2014-02-04 4 S false 4668 104.87 D 832 I KD Plank #2 LLC Class A Common Stock 2014-02-04 4 S false 12904 105.64 D 27266 D Class A Common Stock 2014-02-04 4 S false 807 105.64 D 25 I By KD Plank LLC Class A Common Stock 2014-02-04 4 S false 807 105.64 D 25 I KD Plank #2 LLC Class A Common Stock 2014-02-04 4 S false 400 106.42 D 26866 D Class A Common Stock 2014-02-04 4 S false 25 106.42 D 0 I By KD Plank LLC Class A Common Stock 2014-02-04 4 S false 25 106.42 D 0 I KD Plank #2 LLC Class A Common Stock 2014-02-05 4 C false 20960 0 A 47826 D Class A Common Stock 2014-02-05 4 C false 1310 0 A 1310 I By KD Plank LLC Class A Common Stock 2014-02-05 4 C false 1310 0 A 1310 I KD Plank #2 LLC Class A Common Stock 2014-02-05 4 S false 20960 103.97 D 26866 D Class A Common Stock 2014-02-05 4 S false 1310 103.97 D 0 I By KD Plank LLC Class A Common Stock 2014-02-05 4 S false 1310 103.97 D 0 I KD Plank #2 LLC Class B Common Stock Class A Common Stock 1636365 1636365 I By Annuity Trust Class B Common Stock 2014-02-04 4 C false 74696 0 D Class A Common Stock 74696 17015989 D Class B Common Stock 2014-02-04 4 C false 4668 0 D Class A Common Stock 4668 488282 I By KD Plank LLC Class B Common Stock 2014-02-04 4 C false 4668 0 D Class A Common Stock 4668 650332 I KD Plank #2 LLC Class B Common Stock 2014-02-04 4 C false 12904 0 D Class A Common Stock 12904 17003085 D Class B Common Stock 2014-02-04 4 C false 807 0 D Class A Common Stock 807 487475 I By KD Plank LLC Class B Common Stock 2014-02-04 4 C false 807 0 D Class A Common Stock 807 649525 I KD Plank #2 LLC Class B Common Stock 2014-02-04 4 C false 400 0 D Class A Common Stock 400 17002685 D Class B Common Stock 2014-02-04 4 C false 25 0 D Class A Common Stock 25 487450 I By KD Plank LLC Class B Common Stock 2014-02-04 4 C false 25 0 D Class A Common Stock 25 649500 I KD Plank #2 LLC Class B Common Stock 2014-02-05 4 C false 20960 0 D Class A Common Stock 20960 16981725 D Class B Common Stock 2014-02-05 4 C false 1310 0 D Class A Common Stock 1310 486140 I By KD Plank LLC Class B Common Stock 2014-02-05 4 C false 1310 0 D Class A Common Stock 1310 648190 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. 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 $104.31 to $105.30. 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 $105.31 to $106.27. 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 $106.37 to $106.48. 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 $103.42 to $104.41. 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 form should be read with the other form 4 filed at approximately the same time. /s/ John P. Stanton, Attorney in Fact for Kevin A. Plank 2014-02-06