Gene M. Zamiska - 28 Feb 2025 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Role: SVP & Princ. Acctg Officer
Signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Gene Zamiska
Issuer symbol: WDC
Transactions as of: 28 Feb 2025
Net transactions value: $0
Form type: 4
Filing time: 03 Mar 2025, 20:54:14 UTC
Previous filing: 02 Dec 2024
Next filing: 10 Mar 2025
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	+5,327	+13%	$0.000000	46,551	28 Feb 2025	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Represents performance-based restricted stock units that have been earned by the Reporting Person as a result of the deemed satisfaction of the related performance conditions in connection with the Spin-Off (as defined below). These stock units are scheduled to vest on August 20, 2025.
F2	Includes 12,841 additional stock units acquired by the Reporting Person in connection with the Issuer's spin-off (the "Spin-Off") of a then-wholly owned subsidiary of the Issuer on February 21, 2025. Pursuant to an Employee Matters Agreement, at the effective time of the Spin-Off, each outstanding Issuer stock unit was adjusted and converted into additional stock units based on the equity conversion ratio of 1.452526 per every Issuer stock unit.

Content

Represents performance-based restricted stock units that have been earned by the Reporting Person as a result of the deemed satisfaction of the related performance conditions in connection with the Spin-Off (as defined below). These stock units are scheduled to vest on August 20, 2025.

Includes 12,841 additional stock units acquired by the Reporting Person in connection with the Issuer's spin-off (the "Spin-Off") of a then-wholly owned subsidiary of the Issuer on February 21, 2025. Pursuant to an Employee Matters Agreement, at the effective time of the Spin-Off, each outstanding Issuer stock unit was adjusted and converted into additional stock units based on the equity conversion ratio of 1.452526 per every Issuer stock unit.