Under Armour, Inc. — Director's Dealing 2011

Nov 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Under Armour, Inc. (UA)
CIK: 0001336917
Period of Report: 2011-11-02

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-02	Class A Common Stock	S	3740	$82.92	Disposed	1468200	Direct
2011-11-02	Class A Common Stock	S	6840	$83.68	Disposed	1461360	Direct
2011-11-02	Class A Common Stock	S	807	$84.63	Disposed	1460553	Direct
2011-11-02	Class A Common Stock	S	73	$85.4	Disposed	1460480	Direct
2011-11-03	Class A Common Stock	S	2347	$83.21	Disposed	1458133	Direct
2011-11-03	Class A Common Stock	S	3593	$84.41	Disposed	1454540	Direct
2011-11-03	Class A Common Stock	S	5300	$85.29	Disposed	1449240	Direct
2011-11-03	Class A Common Stock	S	220	$85.93	Disposed	1449020	Direct
2011-11-04	Class A Common Stock	S	10570	$83.94	Disposed	1438450	Direct
2011-11-04	Class A Common Stock	S	880	$85.06	Disposed	1437570	Direct
2011-11-02	Class A Common Stock	S	1360	$82.92	Disposed	89071	Indirect
2011-11-02	Class A Common Stock	S	2485	$83.68	Disposed	86586	Indirect
2011-11-02	Class A Common Stock	S	293	$84.63	Disposed	86293	Indirect
2011-11-02	Class A Common Stock	S	27	$85.4	Disposed	86266	Indirect
2011-11-03	Class A Common Stock	S	853	$83.21	Disposed	85413	Indirect
2011-11-03	Class A Common Stock	S	1307	$84.41	Disposed	84106	Indirect
2011-11-03	Class A Common Stock	S	1927	$85.29	Disposed	82179	Indirect
2011-11-03	Class A Common Stock	S	80	$85.93	Disposed	82099	Indirect
2011-11-04	Class A Common Stock	S	3855	$83.94	Disposed	78244	Indirect
2011-11-04	Class A Common Stock	S	320	$85.06	Disposed	77924	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	506346	Indirect
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 $82.29 to $83.28. 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 $83.31 to $84.24. 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.

F4: This transaction was executed in multiple trades at prices ranging from $84.32 to $84.92. 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 $82.75 to $83.72. 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 $83.85 to $84.83. 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 $84.85 to $85.83. 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 $85.90 to $85.97. 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 $83.45 to $84.43. 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.

F10: This transaction was executed in multiple trades at prices ranging from $84.47 to $85.46. 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.