Matthew E. Massengill - 18 Mar 2026 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Reporting relationship: Director
Issuer ticker: WDC
Reported as of: 18 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 19 Mar 2026, 18:42:34 UTC
Prior SEC filing: 06 Feb 2026
Next SEC filing: 22 Jun 2026
Source filing: View source filing
Reporting owner signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Matthew Massengill

Key filing fact

Matthew E. Massengill filed Form 4 for WESTERN DIGITAL CORP (WDC) on 19 Mar 2026.

Key facts

This page summarizes Matthew E. Massengill's Form 4 filing for WESTERN DIGITAL CORP (WDC).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 19 Mar 2026, 18:42.

Change

Previous filing in this sequence was filed on 06 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001232826 Primary reporting owner

MASSENGILL MATTHEW E

Relationship: Director
Address: C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY, SAN JOSE
Signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Matthew Massengill
Signature date: 19 Mar 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

WDC transaction Derivative

Dividend Equivalent Rights

Award

Transaction value
Shares: +12
Change %: +13%
Price: $0.000000^*
Shares after: 105
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12
Exercise price
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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.