[Form 4] WESTERN DIGITAL CORP Insider Trading Activity

Rhea-AI Filing Summary

Kimberly Alexy, a director of Western Digital Corporation (WDC), reported receipt of dividend equivalent rights tied to previously awarded restricted stock units. The Form 4 discloses a transaction on 09/18/2025 in which 3.581 dividend equivalent rights were acquired, each representing a contingent right to one share of common stock or its cash value. The report shows 9.9317 shares beneficially owned following the transaction on a direct basis. The filing states the dividend equivalents vest proportionately with the underlying RSUs. The form was signed by an attorney-in-fact on behalf of Ms. Alexy on 09/22/2025.

Insights

Corporate Governance Expert

TL;DR: Routine insider reporting of dividend equivalent rights on RSUs; no new option grants or sales disclosed.

The Form 4 documents a non-derivative accrual of dividend equivalent rights related to existing restricted stock units, which is a common compensation occurrence for directors. The disclosed amount, 3.581 dividend equivalent rights, is small in absolute terms and the filing confirms these rights vest with the RSUs rather than representing a new equity grant or sale. For governance oversight, this filing demonstrates disclosure compliance and alignment of director compensation with existing equity awards.

Securities Analyst

TL;DR: Minor insider acquisition tied to RSU dividend equivalents; not likely material to WDC valuation.

The transaction recorded on 09/18/2025 shows acquisition of 3.581 dividend equivalent rights at a reported price of $0.0, reflecting accrual rather than a market purchase. Post-transaction direct beneficial ownership is listed as 9.9317 shares. This disclosure is transactional and administrative in nature, with no indication of trading activity that would materially impact share supply or signal a change in insider conviction.

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

OMB APPROVAL

OMB Number:			3235-0287
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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^*

Alexy Kimberly

(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)

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

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		3.581		(1)	(1)	Common Stock	3.581	$0.0	9.9317	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: Kimberly Alexy	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 Kimberly Alexy report on Form 4 for WDC?

She reported acquisition of 3.581 dividend equivalent rights tied to previously awarded restricted stock units, recorded as a transaction on 09/18/2025.

How many shares does Kimberly Alexy beneficially own after the reported transaction?

9.9317 shares are shown as beneficially owned following the reported transaction, on a direct basis.

What is a dividend equivalent right as described in this filing?

It is a contingent right to receive one share of the issuer's common stock or its cash value, and these rights vest proportionately with the underlying RSUs.

Was there a cash price paid for the dividend equivalents in this Form 4?

The filing reports a price of $0.0, indicating these are accrued dividend equivalents rather than a purchased security.

When was the Form 4 signed and by whom?

The form was signed by Sandra Garcia as Attorney-in-Fact for Kimberly Alexy on 09/22/2025.