WESTERN DIGITAL CORP — Director's Dealing 2012

Mar 15, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTERN DIGITAL CORP (WDC)
CIK: 0000106040
Period of Report: 2012-03-13

Reporting Person: KIMSEY WILLIAM L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-03-13	Common Stock	M	5000	$11.61	Acquired	40717	Direct
2012-03-13	Common Stock	M	7500	$9.21	Acquired	48217	Direct
2012-03-13	Common Stock	S	12500	$40.25	Disposed	35717	Direct
2012-03-14	Common Stock	M	12500	$13.76	Acquired	48217	Direct
2012-03-14	Common Stock	S	12500	$40.25	Disposed	35717	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-03-13	Non-Qualified Stock Option (right to buy)	$9.21	M	7500	Disposed	2014-11-18	Common Stock (7500)	Direct
2012-03-13	Non-Qualified Stock Option (right to buy)	$11.61	M	5000	Disposed	2013-11-20	Common Stock (5000)	Direct
2012-03-14	Non-Qualified Stock Option (right to buy)	$13.76	M	12500	Disposed	2015-11-17	Common Stock (12500)	Direct

Footnotes

F1: The option vested 25% on the first anniversary of the grant date and 6.25% at the end of each three-month period thereafter.