Western Digital (WDC)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-25 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: WESTERN DIGITAL CORP (WDC) CIK: 0000106040 --- Reporting Owner --- Name: Feller Brad CIK: 0001560734 Role: Officer (SVP & Chief Accounting Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-08-25 | Code: A (Grant or award) Shares: +2,068 | Price: $0.00 Shares Owned After: 12,043 | Ownership: D (Direct) Footnotes: [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] Includes 68 shares acquired under the Issuer's Employee Stock Purchase Plan on May 31, 2026. --- Footnotes (Complete Index) --- 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: Includes 68 shares acquired under the Issuer's Employee Stock Purchase Plan on May 31, 2026. --- Signature --- /s/ By: /s/ Sandra Garcia Attorney-in-Fact For: Brad David Feller (2026-08-27)