Western Digital CPO uses shares to cover taxes

Western Digital Corp Chief Product Officer Ahmed Mohammed reported routine equity compensation transactions.

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Form Type

Rhea-AI Filing Summary

Western Digital Corp Chief Product Officer Ahmed Mohammed reported routine equity compensation transactions. On June 17, 2026, 5,149 shares of common stock were disposed of to cover tax obligations related to vesting, a non-market, tax-withholding event. The same day, he acquired 51 shares of common stock through an exercise of derivative awards and received 27.9177 dividend equivalent rights that convert one-for-one into common shares. Following these transactions, he directly holds 159,706 shares of common stock, plus ongoing dividend equivalent rights linked to previously granted restricted stock units.

Insider Trade Summary

51.8964 shares exercised/converted

Exercise 4 txns

Insider Shihab Ahmed Mohammed

Role Chief Product Officer

Type	Security	Shares	Price	Value
Exercise	Dividend Equivalent Rights	51.8964	$0.00	$0.00
Grant/Award	Dividend Equivalent Rights	27.9177	$0.00	$0.00
Exercise	Common Stock	51	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	5,149	$712.13	$3.67M

Holdings After Transaction: Dividend Equivalent Rights — 426.868 contracts (Direct); Common Stock — 159,706 shares (Direct)

Footnotes (4)

F1. 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.
F2. Includes 485 shares acquired under the Issuer's Employee Stock Purchase Plan on May 31, 2026.
F3. Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
F4. 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.

Key Figures

Tax-withheld shares: 5,149 shares Tax-withholding reference price: $712.13 per share Shares acquired via exercise: 51 shares +5 more

8 metrics

Tax-withheld shares 5,149 shares Common stock withheld for tax obligation on Jun. 17, 2026

Tax-withholding reference price $712.13 per share Price associated with 5,149-share tax-withholding disposition

Shares acquired via exercise 51 shares Common stock from derivative exercise on Jun. 17, 2026

Dividend equivalent rights granted 27.9177 rights New rights awarded on Jun. 17, 2026

Dividend equivalent rights exercised 51.8964 rights Converted into common stock on Jun. 17, 2026

Common shares after transactions 164,855 shares Direct holdings of common stock following Form 4 transactions

Dividend equivalent rights after exercise 398.9503 rights Remaining dividend equivalent rights after conversion

ESPP shares referenced 485 shares Shares acquired under Employee Stock Purchase Plan on May 31, 2026

Key Terms

Dividend Equivalent Rights, restricted stock units, Rule 16b-3(e), Employee Stock Purchase Plan

4 terms

Dividend Equivalent Rights financial

"The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock"

Dividend equivalent rights are promises that mirror the cash payments shareholders get from a company’s profits, but they are paid to holders of certain awards (like stock options or restricted stock units) rather than to actual shares. Think of them as a paycheck top‑up that matches dividends while the award is not yet a real stock, and they matter to investors because they add to employee compensation costs and potential share dilution, affecting company profitability and per‑share value.

restricted stock units financial

"in connection with the vesting of restricted stock units to which the dividend equivalent rights relate"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 16b-3(e) regulatory

"Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e)."

Employee Stock Purchase Plan financial

"Includes 485 shares acquired under the Issuer's Employee Stock Purchase Plan on May 31, 2026."

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 06/22/2026 - 09:16 PM EDT

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^*

Shihab Ahmed Mohammed

(Last)

(First)

(Middle)

C/O WESTERN DIGITAL CORPORATION

5601 GREAT OAKS PARKWAY

(Street)

SAN JOSE

CALIFORNIA

95119

(City)

(State)

(Zip)

UNITED STATES

(Country)

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 Product Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/17/2026		M		51⁽¹⁾	A	$0.0	164,855⁽²⁾	D
Common Stock	06/17/2026		F		5,149⁽³⁾	D	$712.13	159,706	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Dividend Equivalent Rights	⁽¹⁾	06/17/2026		M			51.8964	⁽¹⁾	⁽¹⁾	Common Stock	51.8964	$0.0	398.9503	D
Dividend Equivalent Rights	⁽⁴⁾	06/17/2026		A		27.9177		⁽⁴⁾	⁽⁴⁾	Common Stock	27.9177	$0.0	426.868	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. Includes 485 shares acquired under the Issuer's Employee Stock Purchase Plan on May 31, 2026.

3. Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

4. 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: Ahmed Mohammed Shihab	06/22/2026
	** 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.
* Form 4: SEC 1474 (03-26)