Vidyadhara K. Gubbi - Aug 20, 2025 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Role: Chief of Global Ops
Signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Vidyadhara K. Gubbi
Stock symbol: WDC
Transactions as of: Aug 20, 2025
Transactions value $: -$302,333
Form type: 4
Date filed: 8/21/2025, 06:33 PM
Previous filing: Aug 13, 2025
Next filing: Aug 25, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Gubbi Vidyadhara K	Chief of Global Ops	C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY, SAN JOSE	By: /s/ Sandra Garcia Attorney-in-Fact For: Vidyadhara K. Gubbi	2025-08-21	0002057093

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WDC	Common Stock	Options Exercise	$0	+11	+0.01%	$0.00	155K	Aug 20, 2025	Direct	F1
transaction	WDC	Common Stock	Tax liability	-$302K	-4K	-2.58%	$75.64	151K	Aug 20, 2025	Direct	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	Options Exercise	$0	-13.6	-7.43%	$0.00	170	Aug 20, 2025	Common Stock	13.6		Direct	F1

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

Explanation of Responses:

Id	Content
F1	The dividend equivalent rights 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 equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.
F2	Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).