WESTERN DIGITAL CORP — Director's Dealing 2015

Sep 23, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTERN DIGITAL CORP (WDC)
CIK: 0000106040
Period of Report: 2015-09-21

Reporting Person: MILLIGAN STEPHEN D (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-09-21	Common Stock	M	7712.0	$38.19	Acquired	120901	Direct
2015-09-21	Common Stock	S	7312.0	$76.8781	Disposed	113589	Direct
2015-09-21	Common Stock	S	400.0	$77.3094	Disposed	113189	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-09-21	Employee Stock Option (right to buy)	$38.19	M	7712.0	Disposed	2019-03-19	Common Stock (7712)	Direct

Footnotes

F1: 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, 2015.

F2: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $76.2384 to a high of $77.22. 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.

F3: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $77.2853 to a high of $77.3818. 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.

F4: 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 9/19/2015. 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.