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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
1689498	H Manish Bhatia	C/O Western Digital Corporation 5601 Great Oaks Parkway San Jose CA 95119	Evp Silicon Operations	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	2017-08-18	12,922	$44.78	82,614	No	4	M	Direct
Common Stock	Acquisiton	2017-08-18	3,224	$40.63	85,838	No	4	M	Direct
Common Stock	Acquisiton	2017-08-18	3,984	$36.87	89,822	No	4	M	Direct
Common Stock	Disposition	2017-08-18	20,130	$82.38	69,692	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
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	2017-08-18	3,984	$0.00	3,984	$36.87
Common Stock	Employee Stock Option (right to buy)	Disposition	2017-08-18	3,224	$0.00	3,224	$40.63
Common Stock	Employee Stock Option (right to buy)	Disposition	2017-08-18	12,922	$0.00	12,922	$44.78

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
7,966	2016-05-18	2021-02-17	No	4	M	Direct
19,347	2016-05-17	2022-02-16	No	4	M	Direct
38,763	2017-08-03	2023-08-03	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 13, 2017.
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $81.96 to a high of $82.78. 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 vests in substantially equal installments at the end of each three-month period through February 18, 2018. The first installment became exercisable on May 18, 2016.
The option vests in substantially equal installments at the end of each three-month period through February 17, 2019. The first installment became exercisable on May 17, 2016.
The option vested 25% one year from the grant date of 8/3/2016. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 8/3/2020.