[Form 4] WESTERN DIGITAL CORP Insider Trading Activity

Rhea-AI Filing Summary

Ahmed Mohammed Shihab, Chief Product Officer at Western Digital Corporation (WDC), reported on Form 4 that 175.462 dividend equivalent rights related to previously awarded restricted stock units (RSUs) were acquired on 09/18/2025 and converted into 175.462 shares of common stock at a $0.0 price (they represent contingent rights to one share or cash value). After this transaction the reporting person beneficially owns 439.7364 shares directly. The filing explains the dividend equivalent rights vest proportionately with the underlying RSUs and each right corresponds to one share or its cash value.

Insights

Securities Analyst

TL;DR: Routine conversion of accrued dividend equivalents into shares; non-cash, pro rata with RSU vesting.

This Form 4 documents a routine accrual-and-conversion event where dividend equivalent rights tied to RSUs converted into 175.462 shares for an officer. The transaction reports a $0.0 price because these are non-purchase dividend-equivalent issuances rather than open-market buys or sales. The filing does not disclose cash proceeds, option exercises, grant sizes beyond the stated amount, or any change in overall compensation terms.

Corporate Governance Expert

TL;DR: Administrative disclosure of equity compensation mechanics; no governance or control change shown.

The disclosure clarifies that dividend equivalent rights vest proportionately with RSUs and convert into shares or cash value. This is a standard equity-compensation administrative action and does not indicate a change in board composition, ownership control, or employment status. The report is signed by an attorney-in-fact, consistent with routine filing practice.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Shihab Ahmed Mohammed

(Last) (First) (Middle)

C/O WESTERN DIGITAL CORPORATION

5601 GREAT OAKS PARKWAY

(Street)

SAN JOSE CA 95119

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
WESTERN DIGITAL CORP [ WDC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Product Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/18/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Dividend Equivalent Rights	(1)	09/18/2025		A		175.462		(1)	(1)	Common Stock	175.462	$0.0	439.7364	D

Explanation of Responses:

1. 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.

	By: /s/ Sandra Garcia Attorney-in-Fact For: Ahmed Mohammed Shihab	09/22/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did the Form 4 for WDC filed by Ahmed Mohammed Shihab report?

The Form 4 reports that 175.462 dividend equivalent rights related to RSUs were acquired on 09/18/2025 and converted into 175.462 common shares.

Does the Form 4 show any open-market purchases or sales by the officer?

No. The transaction is an accrual/conversion of dividend equivalent rights tied to RSUs, not an open-market purchase or sale.

How many shares does Ahmed Mohammed Shihab beneficially own after the transaction?

The filing reports 439.7364 shares beneficially owned following the reported transaction.

What is the economic significance of the price reported as $0.0?

The $0.0 price reflects that the shares resulted from dividend-equivalent rights conversion, not a cash purchase; the filing gives no cash proceeds.

When was the Form 4 signed and by whom?

The filing shows it was signed by Sandra Garcia, Attorney-in-Fact for Ahmed Mohammed Shihab on 09/22/2025.