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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
106040	Western Digital Corp	WDC	Computer Storage Devices (3572)	330956711

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1234677	J James Murphy	C/O Western Digital Corporation 3355 Michelson Drive, Suite 100 Irvine CA 92612	President, Wd Subsidiary	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2013-12-18	3,017	$29.60	69,901	No	4	M	Direct
Common Stock	Acquisiton	2013-12-18	3,200	$26.17	73,101	No	4	M	Direct
Common Stock	Disposition	2013-12-18	6,217	$81.25	66,884	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (right to buy)	Disposition	2013-12-18	3,200	$0.00	3,200	$26.17
Common Stock	Employee Stock Option (right to buy)	Disposition	2013-12-18	3,017	$0.00	3,017	$29.60

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
9,600	2011-09-08	2017-09-08	No	4	M	Direct
21,118	2012-09-14	2018-09-14	No	4	M	Direct

Footnotes

The option vested 25% one year from the grant date of 9/8/2010, and an additional 6.25% vested at the end of each three-month period through 12/8/2013. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/8/2014.
The option vested 25% one year from the grant date of 9/14/2011, and an additional 6.25% vested at the end of each three-month period through 12/14/2013. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/14/2015.