[Form 4] Western Digital Corp. Insider Trading Activity

Rhea-AI Filing Summary

Western Digital Corp insider Vidyadhara K. Gubbi, Chief of Global Ops, reported two direct sales of common stock: 3,947 shares sold on 08/11/2025 at $74.875, leaving 160,276 shares, and 5,597 shares sold on 08/13/2025 at $76.26, leaving 154,679 shares.

Insights

Securities Analyst

TL;DR: Insider executed two direct sales totaling 9,544 shares at prices near $75; impact appears limited without additional context.

The Form 4 reports two non-derivative dispositions by Vidyadhara K. Gubbi: 3,947 shares on 08/11/2025 at $74.875 and 5,597 shares on 08/13/2025 at $76.26, reducing direct holdings to 154,679 shares. Total shares sold equal 9,544. There are no derivative transactions reported on this form. On its face, these are routine reported sales; material impact depends on broader ownership trends and other disclosures not present here.

Corporate Governance Expert

TL;DR: Form shows direct insider sales with no derivative activity and the filing was made by a single reporting person via attorney-in-fact.

The filing identifies Gubbi as an officer (Chief of Global Ops) and reports only direct common-stock sales. Table II (derivatives) is empty, and there is no explicit indication on the form that these transactions were made under a 10b5-1 plan. The signature block indicates the form was submitted by an attorney-in-fact on behalf of the reporting person. These are standard disclosures required for Section 16 reporting.

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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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^*

Gubbi Vidyadhara K

(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 of Global Ops

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2025

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	08/11/2025		S		3,947	D	$74.875	160,276	D
Common Stock	08/13/2025		S		5,597	D	$76.26	154,679	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:

	By: /s/ Sandra Garcia Attorney-in-Fact For: Vidyadhara K. Gubbi	08/13/2025
	** 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 WDC officer Vidyadhara K. Gubbi report?

He reported two direct sales: 3,947 shares on 08/11/2025 at $74.875 and 5,597 shares on 08/13/2025 at $76.26.

How many shares in total did the reporting person sell according to the Form 4 for WDC?

The total sold was 9,544 shares (3,947 + 5,597), reducing direct holdings to 154,679 shares.

Were any derivative transactions reported for WDC in this Form 4?

No. Table II (derivative securities) is empty; only non-derivative common stock sales are reported.

Is there an indication these sales were made under a 10b5-1 trading plan?

The form includes the 10b5-1 checkbox option, but the provided content does not show that the transactions were marked as made pursuant to a 10b5-1 plan.

Who submitted the Form 4 for the reporting person?

The form bears a signature block showing it was submitted by an attorney-in-fact on behalf of Vidyadhara K. Gubbi.