Sean Hunkler - 26 Aug 2021 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Role: EVP, Global Operations
Signature: /s/ Sandra Garcia Attorney-in-Fact for Sean Hunkler
Issuer symbol: WDC
Transactions as of: 26 Aug 2021
Net transactions value: $0
Form type: 4
Filing time: 17 Sep 2021, 19:02:16 UTC
Previous filing: 21 Jun 2021
Next filing: 31 Aug 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WDC	Common Stock	Award	$0	+811	+0.52%	$0.000000	156,560	26 Aug 2021	Direct	F1, F2

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	Award	$0	+23	+1.5%	$0.000000	1,495	26 Aug 2021	Common Stock	23		Direct	F3, F4

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

Explanation of Responses:

Id	Content
F1	Represents stock units that have been earned by the Reporting Person as payment in respect of the vesting of performance-based restricted stock units. These shares are scheduled to vest on September 4, 2022.
F2	The amount of securities beneficially owned by the Reporting Person, as disclosed in two Form 4s filed by the Reporting Person on August 31, 2021 and September 7, 2021 (together, the "Subsequent Form 4s"), did not give effect to the transaction reported herein. As a result, the Subsequent Form 4s underreported the number of shares of the Issuer's common stock beneficially owned by the Reporting Person by 811 shares. As of the filing of this report and after giving effect to the transaction reported herein, the Reporting Person beneficially owns 156,560 shares of the Issuer's common stock.
F3	These shares represent the number of incremental dividend equivalents awarded based on the achievement rate of the related performance-based restricted stock units.
F4	The amount of securities beneficially owned by the Reporting Person, as disclosed in the Subsequent Form 4s, did not give effect to the transaction reported herein. As a result, the Subsequent Form 4s underreported the number of dividend equivalents beneficially owned by the Reporting Person by 22.5675. As of the filing of this report and after giving effect to the transaction reported herein, the Reporting Person beneficially owns 1,495.0347 dividend equivalents.