WDC Filing
4Filing Date: Jun 22, 2026

WESTERN DIGITAL CORP (WDC) · Insider Trading (Form 4) SEC Filing

Statement of Changes in Beneficial Ownership

descriptionView SEC Filing
ACC: 0001266824-26-000158open_in_new
Total Value$0
Trades1
Insiders1

Transaction Details

Tregillis Cynthia L
Chief Legal Officer & Corp Sec·Direct
Grant · Acquire
Dividend Equivalent RightsDerivative
Shares+18.64
Price$0.00
Total Value$0
Shares Owned After323
Transaction DateJun 17, 2026
Footnotes ▸

The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof. | The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof. | The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Post-Transaction Holdings

Tregillis Cynthia L
SecuritySharesChange
Dividend Equivalent Rights323+18.64 (6.12%)
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-17 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: WESTERN DIGITAL CORP (WDC) CIK: 0000106040 --- Reporting Owner --- Name: Tregillis Cynthia L CIK: 0002057088 Role: Officer (Chief Legal Officer & Corp Sec) --- Derivative Transactions --- [Transaction #1] Security: Dividend Equivalent Rights Date: 2026-06-17 | Code: A (Grant or award) Shares: +18.6375 | Price: $0.00 Shares Owned After: 323.0011 | Ownership: D (Direct) Footnotes: [F1] The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof. [F1] The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof. [F1] The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof. --- Footnotes (Complete Index) --- F1: The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof. --- Signature --- /s/ By: /s/ Sandra Garcia Attorney-in-Fact For: Cynthia Tregillis (2026-06-22)

keid analysis is for reference only and does not constitute investment advice.