WESTERN DIGITAL CORP — Director's Dealing 2025

Mar 4, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTERN DIGITAL CORP (WDC)
CIK: 0000106040
Period of Report: 2025-02-28

Reporting Person: Zamiska Gene M. (SVP & Princ. Acctg Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-28	Common Stock	A	5327	$0.0	Acquired	46551	Direct

Footnotes

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.