Irving Tan - 25 Aug 2026 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: WDC
Reported as of: 25 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 Aug 2026, 20:05:38 UTC
Prior SEC filing: 24 Aug 2026
Source filing: View source filing
Reporting owner signature: By: /s/ Sandra Garcia Attorney-in-Fact For: Irving Tan

Key filing fact

Irving Tan filed Form 4 for WESTERN DIGITAL CORP (WDC) on 27 Aug 2026.

Key facts

This page summarizes Irving Tan's Form 4 filing for WESTERN DIGITAL CORP (WDC).
7 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 27 Aug 2026, 20:05.

Change

Previous filing in this sequence was filed on 24 Aug 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: 27 Aug 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: +32
Change %: +0.01%
Price: $0.000000^*
Shares after: 366,347
Date: 25 Aug 2026
Ownership: Direct
Footnotes: F1, F2

WDC transaction

Common Stock

Tax liability

Transaction value
Shares: -476
Change %: -0.13%
Price: $450.75^*
Shares after: 365,871
Date: 25 Aug 2026
Ownership: Direct
Footnotes: F3

WDC transaction

Common Stock

Award

Transaction value
Shares: +16,548
Change %: +4.5%
Price: $0.000000^*
Shares after: 382,419
Date: 25 Aug 2026
Ownership: Direct
Footnotes: F4

WDC transaction

Common Stock

Options Exercise

Transaction value
Shares: +42
Change %: +0.01%
Price: $0.000000^*
Shares after: 382,461
Date: 26 Aug 2026
Ownership: Direct
Footnotes: F1

WDC transaction

Common Stock

Tax liability

Transaction value
Shares: -3,314
Change %: -0.87%
Price: $468.88^*
Shares after: 379,147
Date: 26 Aug 2026
Ownership: Direct
Footnotes: F3

WDC holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 209,000
Date: 25 Aug 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

Options Exercise

Transaction value
Shares: -32
Change %: -3.8%
Price: $0.000000^*
Shares after: 816
Date: 25 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 32
Exercise price
Footnotes: F1

WDC transaction Derivative

Dividend Equivalent Rights

Options Exercise

Transaction value
Shares: -42
Change %: -5.2%
Price: $0.000000^*
Shares after: 774
Date: 26 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 42
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 4 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

Since the date of the Reporting Person's last Form 4, the Reporting Person transferred 209,000 shares of the Issuer's common stock to the Reporting Person's personal investment company, organized under the laws of the Bahamas, of which the Reporting Person is the sole shareholder. The transfer constituted a change in form of beneficial ownership exempt from Section 16 pursuant to Rule 16a-13 under the Securities Exchange Act of 1934, as amended.

Footnote F3

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

Footnote F4

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.