Sean Hunkler - Aug 27, 2021 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Role: EVP, Global Operations
Signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Sean Hunkler
Stock symbol: WDC
Transactions as of: Aug 27, 2021
Transactions value $: -$580,851
Form type: 4
Date filed: 8/31/2021, 07:31 PM
Previous filing: Sep 17, 2021
Next filing: Sep 7, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WDC	Common Stock	Award	$0	+19K	+12.58%	$0.00	170K	Aug 27, 2021	Direct	F1
transaction	WDC	Common Stock	Options Exercise	$0	+1.25K	+0.73%	$0.00	171K	Aug 30, 2021	Direct	F2
transaction	WDC	Common Stock	Tax liability	-$581K	-9.36K	-5.47%	$62.07	162K	Aug 30, 2021	Direct	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WDC	Dividend Equivalent Rights	Options Exercise	$0	-1.25K	-44.02%	$0.00	1.59K	Aug 30, 2021	Common Stock	1.25K		Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
F2	The dividend equivalents were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalents relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent.
F3	Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).