[Form 4] Western Digital Corp. Insider Trading Activity

Rhea-AI Filing Summary

Western Digital Corp. (WDC) – Form 4 filing for Director Bruce E. Kiddoo

On 06/18/2025, Director Bruce E. Kiddoo acquired 6.8728 dividend equivalent rights that relate to previously granted restricted stock units (RSUs). The rights were credited at $0.00 cost and will vest proportionately with the underlying RSUs, giving the holder a contingent right to receive either one share of common stock or cash per right upon vesting. Following the transaction, Kiddoo directly holds exactly 6.8728 derivative securities of this type. No common shares were bought or sold and no cash changed hands; the filing merely records routine accrual of dividend equivalents under the company’s equity-compensation plan.

No other derivative or non-derivative transactions, sales, or additional grants were reported, and there is no indication of a 10b5-1 trading plan. The action is administrative in nature and does not meaningfully alter insider ownership or signal a strategic view on WDC’s share value.

Insights

Corporate Governance Analyst

TL;DR: Routine credit of 6.9 dividend rights; immaterial impact on WDC.

This Form 4 records a standard dividend-equivalent adjustment to outstanding RSUs held by Director Bruce E. Kiddoo. No cash outlay, no common-share movement, and no trading intent are involved. The fractional 6.8728 rights represent well under 0.01 % of WDC’s 322 M shares outstanding and therefore have no valuation effect. Investors should view the filing as a procedural compliance event rather than a signal—positive or negative—about Western Digital’s fundamentals or governance posture.

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
Estimated average burden
hours per response:			0.5

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^*

KIDDOO BRUCE E

(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)
06/18/2025

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)	06/18/2025		A		6.8728		(1)	(1)	Common Stock	6.8728	$0.0	6.8728	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: Bruce E. Kiddoo	06/23/2025
	** 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 Director Bruce E. Kiddoo acquire according to the WDC Form 4?

He received 6.8728 dividend equivalent rights tied to previously granted RSUs, at $0.00 cost.

Does the filing indicate any purchase or sale of Western Digital common stock?

No. The filing only reflects the crediting of dividend equivalents; no common shares were bought or sold.

How many derivative securities does Kiddoo own after the transaction?

Following the adjustment, he beneficially owns exactly 6.8728 dividend equivalent rights.

Is this transaction under a Rule 10b5-1 trading plan?

No. The form does not check the 10b5-1 box, indicating no preset trading plan involvement.

Why are dividend equivalent rights recorded on Form 4?

SEC rules require insiders to report any changes in beneficial ownership, including accruals of dividend-linked rights on outstanding RSUs.