Under Armour, Inc. — Director's Dealing 2012

Feb 8, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Under Armour, Inc. (UA)
CIK: 0001336917
Period of Report: 2012-02-06

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-06	Class A Common Stock	S	3000	$80.46	Disposed	1373570	Direct
2012-02-06	Class A Common Stock	S	9000	$80.91	Disposed	1364570	Direct
2012-02-07	Class A Common Stock	S	2308	$80.4	Disposed	1362262	Direct
2012-02-07	Class A Common Stock	S	9692	$81.08	Disposed	1352570	Direct
2012-02-08	Class A Common Stock	S	1077	$81.39	Disposed	1351493	Direct
2012-02-08	Class A Common Stock	S	1423	$82.04	Disposed	1350070	Direct
2012-02-06	Class A Common Stock	S	3047	$80.78	Disposed	65138	Indirect
2012-02-06	Class A Common Stock	S	200	$81.2	Disposed	64938	Indirect
2012-02-07	Class A Common Stock	S	3247	$81	Disposed	61691	Indirect
2012-02-08	Class A Common Stock	S	1400	$81.39	Disposed	60291	Indirect
2012-02-08	Class A Common Stock	S	1847	$82.04	Disposed	58444	Indirect
2012-02-06	Class A Common Stock	S	600	$80.46	Disposed	498546	Indirect
2012-02-06	Class A Common Stock	S	1800	$80.91	Disposed	496746	Indirect
2012-02-07	Class A Common Stock	S	461	$80.4	Disposed	496285	Indirect
2012-02-07	Class A Common Stock	S	1939	$81.08	Disposed	494346	Indirect
2012-02-08	Class A Common Stock	S	215	$81.39	Disposed	494131	Indirect
2012-02-08	Class A Common Stock	S	285	$82.04	Disposed	493846	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 $79.67 to $80.66. 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 $80.67 to $81.29. 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 $79.75 to $80.73. 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 $80.80 to $81.29. 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 $80.83 to $81.80. 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 $81.88 to $82.71. 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 $80.15 to $81.12. 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.

F9: This transaction was executed in multiple trades at prices ranging from $81.15 to $81.24. 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.

F10: This transaction was executed in multiple trades at prices ranging from $80.42 to $81.29. 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 $81.88 to $82.71. 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.