Irving Tan - 17 Sep 2026 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: WDC
Reported as of: 17 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 21 Sep 2026, 18:36:42 UTC
Prior SEC filing: 02 Sep 2026
Source filing: View source filing
Reporting owner signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Irving Tan

Filing notes and source

Key filing fact

Irving Tan filed Form 4 for WESTERN DIGITAL CORP (WDC) on 21 Sep 2026.

Key facts

This page summarizes Irving Tan's Form 4 filing for WESTERN DIGITAL CORP (WDC).
4 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 21 Sep 2026, 18:36.

Change

Previous filing in this sequence was filed on 02 Sep 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 0001729518 Primary reporting owner

Tan Irving

Relationship: Chief Executive Officer, Director
Address: C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY, SAN JOSE
Signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Irving Tan
Signature date: 21 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

WDC transaction

Common Stock

Options Exercise

Transaction value
Shares: +57
Change %: +0.02%
Price: $0.000000^*
Shares after: 266,704
Date: 20 Sep 2026
Ownership: Direct
Footnotes: F1

WDC transaction

Common Stock

Tax liability

Transaction value
Shares: -1,091
Change %: -0.41%
Price: $441.36^*
Shares after: 265,613
Date: 20 Sep 2026
Ownership: Direct
Footnotes: F2

WDC holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 112,500
Date: 17 Sep 2026
Ownership: By Trust via Inv Co

WDC holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 209,000
Date: 17 Sep 2026
Ownership: by Personal Inv. Co.

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: +83
Change %: +11%
Price: $0.000000^*
Shares after: 857
Date: 17 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 83
Exercise price
Footnotes: F3

WDC transaction Derivative

Dividend Equivalent Rights

Options Exercise

Transaction value
Shares: -57
Change %: -6.6%
Price: $0.000000^*
Shares after: 800
Date: 20 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 57
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 3 footnotes

Footnote F1

The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.

Footnote F2

Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Footnote F3

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.