Under Armour, Inc. — Director's Dealing 2012

May 3, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Under Armour, Inc. (UA)
CIK: 0001336917
Period of Report: 2012-05-01

Reporting Person: Plank J Scott (EVP of Business Development)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-01	Class A Common Stock	S	769	$97.12	Disposed	1356155	Direct
2012-05-01	Class A Common Stock	S	3850	$98.18	Disposed	1352305	Direct
2012-05-01	Class A Common Stock	S	7381	$98.84	Disposed	1344924	Direct
2012-05-02	Class A Common Stock	S	2077	$98.46	Disposed	1342847	Direct
2012-05-02	Class A Common Stock	S	1000	$99.11	Disposed	1341847	Direct
2012-05-02	Class A Common Stock	S	6692	$100.58	Disposed	1335155	Direct
2012-05-02	Class A Common Stock	S	2231	$101.26	Disposed	1332924	Direct
2012-05-03	Class A Common Stock	S	5231	$99.52	Disposed	1327693	Direct
2012-05-03	Class A Common Stock	S	6461	$100.63	Disposed	1321232	Direct
2012-05-03	Class A Common Stock	S	308	$101.67	Disposed	1320924	Direct
2012-05-01	Class A Common Stock	S	400	$97.72	Disposed	51190	Indirect
2012-05-01	Class A Common Stock	S	2647	$98.66	Disposed	48543	Indirect
2012-05-01	Class A Common Stock	S	200	$99.26	Disposed	48343	Indirect
2012-05-02	Class A Common Stock	S	600	$98.69	Disposed	47743	Indirect
2012-05-02	Class A Common Stock	S	2147	$100.64	Disposed	45596	Indirect
2012-05-02	Class A Common Stock	S	500	$101.31	Disposed	45096	Indirect
2012-05-03	Class A Common Stock	S	1547	$99.49	Disposed	43549	Indirect
2012-05-03	Class A Common Stock	S	1500	$100.64	Disposed	42049	Indirect
2012-05-03	Class A Common Stock	S	200	$101.36	Disposed	41849	Indirect
2012-05-01	Class A Common Stock	S	154	$97.12	Disposed	493692	Indirect
2012-05-01	Class A Common Stock	S	770	$98.18	Disposed	492922	Indirect
2012-05-01	Class A Common Stock	S	1476	$98.84	Disposed	491446	Indirect
2012-05-02	Class A Common Stock	S	415	$98.46	Disposed	491031	Indirect
2012-05-02	Class A Common Stock	S	200	$99.11	Disposed	490831	Indirect
2012-05-02	Class A Common Stock	S	1339	$100.58	Disposed	489492	Indirect
2012-05-02	Class A Common Stock	S	446	$101.26	Disposed	489046	Indirect
2012-05-03	Class A Common Stock	S	1046	$99.52	Disposed	488000	Indirect
2012-05-03	Class A Common Stock	S	1292	$100.63	Disposed	486708	Indirect
2012-05-03	Class A Common Stock	S	62	$101.67	Disposed	486646	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	100000	Indirect

Footnotes

F1: Shares sold pursuant to a 10b5-1 trading plan.

F2: This transaction was executed in multiple trades at prices ranging from $96.51 to $97.40. 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.

F3: This transaction was executed in multiple trades at prices ranging from $97.53 to $98.51. 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.

F4: This transaction was executed in multiple trades at prices ranging from $98.55 to $99.34. 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.

F5: This transaction was executed in multiple trades at prices ranging from $97.91 to $98.75. 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.

F6: This transaction was executed in multiple trades at prices ranging from $98.94 to $99.36. 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.

F7: This transaction was executed in multiple trades at prices ranging from $100.00 to $100.99. 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.

F8: This transaction was executed in multiple trades at prices ranging from $101.00 to $101.59. 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.

F9: This transaction was executed in multiple trades at prices ranging from $99.10 to $100.06. 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.

F10: This transaction was executed in multiple trades at prices ranging from $100.14 to $101.12. 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.

F11: This transaction was executed in multiple trades at prices ranging from $101.57 to $101.76. 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.

F12: This transaction was executed in multiple trades at prices ranging from $97.05 to $98.02. 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.

F13: This transaction was executed in multiple trades at prices ranging from $98.18 to $99.13. 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.

F14: This transaction was executed in multiple trades at prices ranging from $99.18 to $99.33. 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.

F15: This transaction was executed in multiple trades at prices ranging from $98.08 to $99.24. 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.

F16: This transaction was executed in multiple trades at prices ranging from $100.14 to $101.09. 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.

F17: This transaction was executed in multiple trades at prices ranging from $101.17 to $101.45. 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.

F18: This transaction was executed in multiple trades at prices ranging from $99.11 to $100.08. 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.

F19: This transaction was executed in multiple trades at prices ranging from $100.16 to $101.08. 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.

F20: This transaction was executed in multiple trades at prices ranging from $101.29 to $101.43. 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.