Irving Tan - 19 Aug 2025 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: WDC
Reported as of: 19 Aug 2025
Net transaction value: -$745,480
SEC form: 4
Accepted by SEC: 21 Aug 2025, 18:33:41 UTC
Prior SEC filing: 23 Jun 2025
Next SEC filing: 25 Aug 2025
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 21 Aug 2025.

Key facts

This page summarizes Irving Tan's Form 4 filing for WESTERN DIGITAL CORP (WDC).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 21 Aug 2025, 18:33.

Change

Previous filing in this sequence was filed on 23 Jun 2025.
Current net transaction value: -$745,480.

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 Aug 2025

Reported non-derivative transactions

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

WDC transaction

Common Stock

Sale

Transaction value: $654,334
Shares: -8,621
Change %: -1.4%
Price: $75.90
Shares after: 594,836
Date: 19 Aug 2025
Ownership: Direct
Footnotes: F1

WDC transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +101
Change %: +0.02%
Price: $0.000000
Shares after: 594,937
Date: 20 Aug 2025
Ownership: Direct
Footnotes: F2

WDC transaction

Common Stock

Tax liability

Transaction value: $91,146
Shares: -1,205
Change %: -0.2%
Price: $75.64
Shares after: 593,732
Date: 20 Aug 2025
Ownership: Direct
Footnotes: F3

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: $0
Shares: -103
Change %: -15%
Price: $0.000000
Shares after: 585
Date: 20 Aug 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 103
Exercise price
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 12, 2025.

Footnote F2

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 F3

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