[Form 4] WESTERN DIGITAL CORP Insider Trading Activity

Rhea-AI Filing Summary

Western Digital Corp (WDC) Form 4: Kris Sennesael, Chief Financial Officer, reported a transaction dated 09/18/2025 in which 196.707 dividend equivalent rights related to previously awarded restricted stock units (RSUs) were acquired. The filing shows 486.9318 shares beneficially owned following the reported transaction, held directly. The dividend equivalent rights accrue and vest proportionately with the related RSUs, and each right represents a contingent entitlement to one share of common stock or its cash value. The Form 4 was submitted by attorney-in-fact Sandra Garcia on 09/22/2025.

Insights

Securities Analyst

TL;DR: A routine issuance of dividend equivalent rights tied to RSUs increased the CFO's direct holdings modestly; no material change to control.

The reported acquisition of 196.707 dividend equivalent rights is a non-cash, compensation-related event that vests with existing RSUs and converts to shares or cash. The post-transaction direct beneficial ownership of 486.9318 shares remains small relative to a public company capitalization and does not indicate additional cash purchases or sales by the officer. This disclosure is consistent with standard executive equity compensation mechanics and does not reveal new strategic or operational developments.

Corporate Governance Expert

TL;DR: The Form 4 documents an expected compensation accrual; governance implications are routine with no red flags.

The entry documents dividend equivalent rights tied to previously granted RSUs that vest proportionately. Reporting by attorney-in-fact and the clear statement of direct ownership follow Form 4 conventions. There are no indications of accelerated vesting, transfers to affiliates, or derivative exercises that would raise governance or disclosure concerns. This filing serves primarily to update public records on executive ownership levels.

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^*

Sennesael Kris

(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 Financial 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		196.707		(1)	(1)	Common Stock	196.707	$0.0	486.9318	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: Kris Sennesael	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 transaction did Kris Sennesael report on the WDC Form 4?

The report documents acquisition of 196.707 dividend equivalent rights related to previously awarded RSUs, dated 09/18/2025.

How many shares does the reporting person beneficially own after the transaction?

The filing shows 486.9318 shares beneficially owned following the reported transaction, held directly.

What are dividend equivalent rights in this filing?

Per the filing, each dividend equivalent right is a contingent right to receive one share of common stock or the cash value thereof and vests with the related RSUs.

Who signed and filed the Form 4 for Kris Sennesael?

The Form 4 was submitted by attorney-in-fact Sandra Garcia and bears a filing date of 09/22/2025.

Does the Form 4 show any sale or cash purchase of WDC stock by the CFO?

No. The filing reports acquisition of dividend equivalent rights tied to RSUs, not a market purchase or sale.