[Form 4] WESTERN DIGITAL CORP Insider Trading Activity

Rhea-AI Filing Summary

Western Digital Corporation director reports new equity awards. A Western Digital (WDC) director filed a Form 4 disclosing equity-related transactions on 11/19/2025 and 11/20/2025. On 11/19/2025, dividend equivalent rights tied to previously granted restricted stock units converted into 10 shares of common stock at $0.0 per share, increasing the director’s direct holdings.

On 11/20/2025, the director received a grant of 1,585 restricted stock units, each representing a contingent right to one share of Western Digital common stock. After these transactions, the director directly beneficially owned 5,663 shares of Western Digital common stock. A small cash amount was also paid to settle a fractional dividend equivalent right.

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^*

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)
11/19/2025

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
Common Stock	11/19/2025		M		10(1)	A	$0.0	4,078	D
Common Stock(2)	11/20/2025		A		1,585	A	$0.0	5,663	D

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)	11/19/2025		M			10.7481	(1)	(1)	Common Stock	10.7481	$0.0	0	D

Explanation of Responses:

1. 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.

2. Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

	By: /s/ Sandra Garcia Attorney-in-Fact For: Bruce E. Kiddoo	11/21/2025
	** 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 insider transactions did Western Digital (WDC) report in this Form 4?

The Form 4 reports a director’s conversion of dividend equivalent rights into 10 shares of Western Digital common stock on 11/19/2025 and a grant of 1,585 restricted stock units on 11/20/2025.

How many Western Digital shares does the reporting director own after these transactions?

Following the reported transactions, the director beneficially owned 5,663 shares of Western Digital common stock in direct ownership.

What are the dividend equivalent rights mentioned for Western Digital (WDC)?

The dividend equivalent rights were tied to restricted stock units and were converted into and paid in the form of Western Digital common stock on a one-for-one basis, with a small cash payment to settle a fractional right.

What does the restricted stock unit grant to the Western Digital director represent?

The grant of 1,585 restricted stock units gives the director a contingent right to receive one share of Western Digital common stock for each unit, subject to the applicable vesting conditions.

Is the Western Digital Form 4 filed for one or multiple reporting persons?

The Form 4 is filed by one reporting person, identified as a director of Western Digital Corporation.

Were any derivative securities still held after the Western Digital transactions?

After the conversion of 10.7481 dividend equivalent rights into common stock, the Form 4 shows 0 derivative securities beneficially owned in that line item.

What role does the reporting person have at Western Digital (WDC)?

The reporting person is identified as a Director of Western Digital Corporation.