[Form 4] Western Digital Corp. Insider Trading Activity

Rhea-AI Filing Summary

Western Digital Corp. (WDC) Form 4 reports that Kris Sennesael, Chief Financial Officer, was granted 34,763 restricted stock units (RSUs) on 08/26/2025. Each RSU represents a contingent right to receive one share of the company’s common stock when vested. After the grant, Mr. Sennesael beneficially owned 206,547 shares in total on a direct basis. The reported grant lists a price of $0.0, consistent with a compensation award rather than an open-market purchase. The form was signed by an attorney-in-fact on behalf of the reporting person on 08/28/2025.

Insights

Compensation & Governance Analyst

TL;DR: CFO received a routine equity grant of 34,763 RSUs, increasing direct ownership to 206,547 shares.

This Form 4 documents a standard restricted stock unit grant to the company’s CFO, which is a common component of executive compensation and aligns management incentives with shareholder outcomes. The grant date is 08/26/2025 and each RSU converts to one share upon vesting. The filing shows direct beneficial ownership and does not disclose vesting schedule or grant value beyond the unit count, so assessment of dilution, expense recognition, or exact economic value cannot be determined from this form alone. No sales, option exercises, or derivative transactions are reported.

Securities Compliance Specialist

TL;DR: Filing is a routine Section 16 disclosure of an equity award with no indicated market transaction.

The document fulfills Section 16 reporting by noting an award of 34,763 RSUs to an officer and reports post-transaction direct beneficial ownership of 206,547 shares. The transaction code is "A" indicating acquisition, and the price is listed as $0.0, reflecting a compensatory grant. The form does not include an amendment flag, related party transactions, or evidence of trading pursuant to a 10b5-1 plan. For compliance review, key missing details for full analysis are the grant’s vesting dates and any performance conditions, which are not provided on this Form 4.

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^*

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)
08/26/2025

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(1)	08/26/2025		A		34,763	A	$0.0	206,547	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

Explanation of Responses:

1. 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: Kris Sennesael	08/28/2025
	** 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 Kris Sennesael report on the Form 4 for WDC?

The Form 4 reports a grant of 34,763 restricted stock units (RSUs) to Kris Sennesael on 08/26/2025, increasing direct beneficial ownership to 206,547 shares.

Does the Form 4 show a market purchase or sale by the insider (WDC)?

No. The transaction code is A (acquisition) and the price is listed as $0.0, indicating a compensatory grant rather than an open-market purchase or sale.

Is there information about vesting or conditions for the RSUs in this Form 4 (WDC)?

The Form 4 states the award represents RSUs but does not disclose vesting dates or performance conditions, so those details are not available in this filing.

When was the Form 4 signed and filed for this WDC transaction?

The signature block shows the form was signed by an attorney-in-fact for Kris Sennesael on 08/28/2025 and the transaction date is 08/26/2025.

How many total shares does the reporting person own after the RSU grant (WDC)?

After the reported transaction, the reporting person beneficially owned 206,547 shares on a direct basis.