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Filing Details

Accession Number:: 0001266824-14-000300
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2014-12-23 17:51:50
Reporting Period:: 2014-12-19

Filing Date:: 2014-12-23
Accepted Time:: 2014-12-23 17:51:50
SEC Url:: Form 4 Filing

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
1277246	D Stephen Milligan	C/O Western Digital Corporation 3355 Michelson Drive, Suite 100 Irvine CA 92612	President & Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2014-12-19	6,164	$43.11	160,366	No	4	M	Direct
Common Stock	Acquisiton	2014-12-19	7,713	$38.19	168,079	No	4	M	Direct
Common Stock	Disposition	2014-12-19	11,808	$113.59	156,271	No	4	S	Direct
Common Stock	Disposition	2014-12-19	2,069	$114.27	154,202	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
No	4	S	Direct

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (right to buy)	Disposition	2014-12-19	7,713	$0.00	7,713	$38.19
Common Stock	Employee Stock Option (right to buy)	Disposition	2014-12-19	6,164	$0.00	6,164	$43.11

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
38,562	2013-03-19	2019-03-19	No	4	M	Direct
43,145	2013-09-06	2019-09-16	No	4	M	Direct

Footnotes

These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2014.
Includes 164 shares acquired under the issuer's Employee Stock Purchase Plan on November 30, 2014.
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $113.05 to a high of $114.04. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $114.05 to a high of $114.65. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
The option vested 25% one year from the grant date of 3/19/2012, and an additional 6.25% vested at the end of each three-month period through 12/19/2014. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 3/19/2016.
The option vested 25% one year from the grant date of 9/6/2012, and an additional 6.25% vested at the end of each three-month period through 12/6/2014. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/6/2016.