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Filing Details

Accession Number:: 0001266824-18-000103
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2018-05-30 19:46:26
Reporting Period:: 2018-05-29

Accepted Time:: 2018-05-30 19:46:26
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
1587067	Srinivasan Sivaram	C/O Western Digital Corporation 5601 Great Oaks Parkway San Jose CA 95119	Evp, Memory Technology	No	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	2018-05-29	25,362	$44.78	110,910	No	4	M	Direct
Common Stock	Acquisiton	2018-05-29	6,322	$30.20	117,232	No	4	M	Direct
Common Stock	Acquisiton	2018-05-29	12,139	$36.87	129,371	No	4	M	Direct
Common Stock	Acquisiton	2018-05-29	18,968	$40.63	148,339	No	4	M	Direct
Common Stock	Disposition	2018-05-29	2,700	$86.75	145,639	No	4	S	Direct
Common Stock	Disposition	2018-05-29	61,179	$86.34	84,460	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	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	2018-05-29	6,322	$0.00	6,322	$30.20
Common Stock	Employee Stock Option (right to buy)	Disposition	2018-05-29	12,139	$0.00	12,139	$36.87
Common Stock	Employee Stock Option (right to buy)	Disposition	2018-05-29	18,968	$0.00	18,968	$40.63
Common Stock	Employee Stock Option (right to buy)	Disposition	2018-05-29	25,362	$0.00	25,362	$44.78

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2016-06-28	2020-06-27	No	4	M	Direct
0	2016-05-18	2021-02-17	No	4	M	Direct
11,380	2016-05-17	2022-02-16	No	4	M	Direct
32,606	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 2, 2017, as amended on February 26, 2018.
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $86.695 to a high of $86.90. 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 $85.695 to a high of $86.69. 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 June 28, 2017. The first installment became exercisable on June 28, 2016.
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, and an additional 6.25% vested at the end of each three-month period through 5/3/2018. 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.