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 Kevin A (Director, President and CEO, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-02	Class A Common Stock	C	13500	—	Acquired	13600	Direct
2011-11-02	Class A Common Stock	S	13500	$82.86	Disposed	100	Direct
2011-11-02	Class A Common Stock	C	29070	—	Acquired	29170	Direct
2011-11-02	Class A Common Stock	S	29070	$83.62	Disposed	100	Direct
2011-11-02	Class A Common Stock	C	4860	—	Acquired	4960	Direct
2011-11-02	Class A Common Stock	S	4860	$84.54	Disposed	100	Direct
2011-11-02	Class A Common Stock	C	270	—	Acquired	370	Direct
2011-11-02	Class A Common Stock	S	270	$85.34	Disposed	100	Direct
2011-11-03	Class A Common Stock	C	8640	—	Acquired	8740	Direct
2011-11-03	Class A Common Stock	S	8640	$83.15	Disposed	100	Direct
2011-11-03	Class A Common Stock	C	11160	—	Acquired	11260	Direct
2011-11-03	Class A Common Stock	S	11160	$84.19	Disposed	100	Direct
2011-11-03	Class A Common Stock	C	24300	—	Acquired	24400	Direct
2011-11-03	Class A Common Stock	S	24300	$85.12	Disposed	100	Direct
2011-11-03	Class A Common Stock	C	3600	—	Acquired	3700	Direct
2011-11-03	Class A Common Stock	S	3600	$85.77	Disposed	100	Direct
2011-11-04	Class A Common Stock	C	38880	—	Acquired	38980	Direct
2011-11-04	Class A Common Stock	S	38880	$83.94	Disposed	100	Direct
2011-11-04	Class A Common Stock	C	3510	—	Acquired	3610	Direct
2011-11-04	Class A Common Stock	S	3510	$84.93	Disposed	100	Direct
2011-11-04	Class A Common Stock	C	360	—	Acquired	460	Direct
2011-11-04	Class A Common Stock	S	360	$85.5	Disposed	100	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-11-02	Class B Common Stock	$	C	13500	Disposed		Class A Common Stock (13500)	Direct
2011-11-02	Class B Common Stock	$	C	29070	Disposed		Class A Common Stock (29070)	Direct
2011-11-02	Class B Common Stock	$	C	4860	Disposed		Class A Common Stock (4860)	Direct
2011-11-02	Class B Common Stock	$	C	270	Disposed		Class A Common Stock (270)	Direct
2011-11-03	Class B Common Stock	$	C	8640	Disposed		Class A Common Stock (8640)	Direct
2011-11-03	Class B Common Stock	$	C	11160	Disposed		Class A Common Stock (11160)	Direct
2011-11-03	Class B Common Stock	$	C	24300	Disposed		Class A Common Stock (24300)	Direct
2011-11-03	Class B Common Stock	$	C	3600	Disposed		Class A Common Stock (3600)	Direct
2011-11-04	Class B Common Stock	$	C	38880	Disposed		Class A Common Stock (38880)	Direct
2011-11-04	Class B Common Stock	$	C	3510	Disposed		Class A Common Stock (3510)	Direct
2011-11-04	Class B Common Stock	$	C	360	Disposed		Class A Common Stock (360)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$		Class A Common Stock (888976)	888976	Indirect
Class B Common Stock	$		Class A Common Stock (390000)	390000	Indirect
Class B Common Stock	$		Class A Common Stock (308975)	308975	Indirect

Footnotes

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

F2: 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.

F3: This transaction was executed in multiple trades at prices ranging from $82.19 to $83.18. 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 $83.19 to $84.18. 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 $84.20 to $85.10. 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 $85.20 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.

F7: This transaction was executed in multiple trades at prices ranging from $82.59 to $83.58. 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 $83.59 to $84.58. 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 $84.59 to $85.58. 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 $85.60 to $85.98. 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 $83.41 to $84.40. 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.

F12: This transaction was executed in multiple trades at prices ranging from $84.41 to $85.40. 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.

F13: This transaction was executed in multiple trades at prices ranging from $85.46 to $85.59. 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.

F14: 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.