WESTERN DIGITAL CORP — Director's Dealing 2017

Nov 14, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTERN DIGITAL CORP (WDC)
CIK: 0000106040
Period of Report: 2017-11-13

Reporting Person: LONG MARK P (Pres WD Capital, CSO & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-11-13	Common Stock	M	4467	$44.78	Acquired	88384	Direct
2017-11-13	Common Stock	S	4467	$88.13	Disposed	83917	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-11-13	Employee Stock Option (right to buy)	$44.78	M	4467	Disposed	2023-08-03	Common Stock (4467)	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 16, 2017.

F2: 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 11/3/2017. 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.