[Form 4] Western Digital Corp. Insider Trading Activity

Rhea-AI Filing Summary

Insider sale by WDC officer — The Form 4 shows Vidyadhara K. Gubbi, Chief of Global Operations at Western Digital Corp. (WDC), sold 11,343 shares of common stock on 09/04/2025. The filing reports a weighted average sale price of $90.2902 per share, with individual transaction prices ranging from $90.28 to $90.32. After the reported disposals, the reporting person beneficially owns 151,596 common shares. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person on 09/05/2025. The filing contains an explanatory note that the sale occurred in multiple transactions and the reporter will provide per-price breakdowns on request.

Positive

• Full disclosure provided with weighted average sale price and range; reporter commits to supplying per‑trade details on request
• Significant continued ownership — reporting person still beneficially owns 151,596 shares after the sale

Negative

• Insider disposal reported — 11,343 common shares were sold on 09/04/2025, which reduces the officer's stake
• Transaction code S (sale) used, indicating disposition rather than an acquisition or exercised option

Insights

Corporate Governance Expert

TL;DR: Officer sold a small portion of holdings; disclosure is routine and complies with Section 16 reporting.

The reported sale of 11,343 shares at a disclosed weighted average price appears to be a routine, disclosed disposition by a company officer. The filing includes the required explanatory language about multiple transactions and commits to providing per-trade price details on request, which aligns with transparency expectations. Retaining 151,596 shares signals continued ownership interest. There is no indication of options exercise or derivative transactions in this filing; the activity reported is strictly non-derivative common stock sale(s).

Securities Analyst

TL;DR: The transaction is material at the individual level but likely not company‑moving given disclosed remaining holdings.

From a market perspective, the report documents an individual officer selling shares in multiple trades at prices between $90.28 and $90.32. The filing provides the weighted average price and remaining beneficial ownership, allowing investors to see continued insider alignment via the 151,596 shares retained. The Form 4 does not disclose any transaction code implying Rule 10b5‑1 plan execution, suggesting an open-market disposition (code S). No additional corporate events or derivative positions are reported that would elevate impact.

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^*

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 Operations

3. Date of Earliest Transaction (Month/Day/Year)
09/04/2025

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	09/04/2025		S		11,343	D	$90.2902(1)	151,596	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 weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $90.28 to a high of $90.32. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

	By: /s/ Sandra Garcia Attorney-in-Fact For: Vidyadhara K. Gubbi	09/05/2025
	** 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 WDC insider Vidyadhara K. Gubbi report on Form 4?

The Form 4 reports that Vidyadhara K. Gubbi sold 11,343 shares of WDC common stock on 09/04/2025 at a weighted average price of $90.2902.

How many WDC shares does the reporting person own after the sale?

After the reported transactions the reporting person beneficially owns 151,596 shares of WDC common stock.

What price range did the WDC shares sell for in the reported transactions?

The explanatory note states the shares were sold at prices ranging from $90.28 to $90.32, with a weighted average of $90.2902.

Was the sale part of a 10b5-1 plan according to the filing?

No 10b5-1 plan box is checked in the filing and the transaction is reported with code S for sale.

Who signed the Form 4 for the reporting person?

The Form 4 was signed by an attorney-in-fact, Sandra Garcia, on behalf of Vidyadhara K. Gubbi on 09/05/2025.