STOCK TITAN

[Form 4] WESTERN DIGITAL CORP Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
4

Matthew E. Massengill, a director of Western Digital Corporation (WDC), was issued 26.0182 shares as dividend equivalent rights tied to previously awarded restricted stock units (RSUs). The filing reports the dividend equivalents accrued on RSUs and that they vest proportionately with the underlying RSUs; each dividend equivalent represents a contingent right to receive one share of common stock or its cash value. The Form 4 reports the transaction date as 09/18/2025 and is signed by an attorney-in-fact on 09/22/2025.

Matthew E. Massengill, direttore della Western Digital Corporation (WDC), ha ricevuto 26.0182 azioni come diritti di dividendo legati a unità di azioni restritte (RSU) precedentemente attribuite. Il deposito riporta gli equivalenti di dividendo maturati sulle RSU e che si vestscono proporzionalmente alle RSU sottostanti; ogni equivalente di dividendo rappresenta un diritto contingente a ricevere una azione ordinaria o il relativo valore in contanti. Il Form 4 riporta la data della transazione come 09/18/2025 ed è firmato da un procuratore in fact il 09/22/2025.

Matthew E. Massengill, director de Western Digital Corporation (WDC), recibió 26.0182 acciones como derechos de dividendo vinculados a unidades de acciones restringidas (RSU) previamente otorgadas. La presentación informa los equivalentes de dividendo acumulados en las RSU y que se consolidan de forma proporcional con las RSU subyacentes; cada equivalente de dividendo representa un derecho contingente a recibir una acción ordinaria o su valor en efectivo. El Formulario 4 reporta la fecha de la transacción como 09/18/2025 y está firmado por un apoderado el 09/22/2025.

매튜 E. 매쌘길, Western Digital Corporation(WDC)의 이사로, 이전에 부여된 제한 주식 단위(RSU)와 연계된 배당금 등가권으로 26.0182주를 받았습니다. 공시에는 RSU에 누적된 배당금 등가권이 기초 RSU에 비례해 귀속되며, 각 등가권은 하나의 보통주를 받거나 그 현금 가치를 받을 수 있는 조건부 권리를 나타냅니다. Form 4에는 거래일이 09/18/2025로 기재되어 있으며, 2025-09-22에 대리인이 서명했습니다.

Matthew E. Massengill, directeur de Western Digital Corporation (WDC), a reçu 26.0182 actions en tant que droits de dividende liés à des unités d’actions restreintes (RSU) précédemment attribuées. Le dépôt indique les équivalents de dividende accumulés sur les RSU et qu’ils se consolident proportionnellement avec les RSU sousjacentes; chaque équivalent de dividende représente un droit conditionnel de recevoir une action ordinaire ou sa valeur en espèces. Le Formulaire 4 indique la date de la transaction comme 09/18/2025 et est signé par un mandataire le 09/22/2025.

Matthew E. Massengill, Direktor der Western Digital Corporation (WDC), erhielt 26.0182 Aktien als Dividendenäquivalente im Zusammenhang mit zuvor gewährten Restricted Stock Units (RSUs). Der Bericht gibt die auf RSUs aufgelaufenen Dividendenäquivalente an, die sich proportional zu den zugrunde liegenden RSUs vester; jeder Dividendenäquivalent stellt ein bedingtes Recht dar, eine Aktie des Stammkapitals zu erhalten oder deren Barwert zu erhalten. Das Formular 4 meldet das Transaktionsdatum als 09/18/2025 und ist von einem Bevollmächtigten am 09/22/2025 unterzeichnet.

ماثيو م. ماسينغيل، مدير في Western Digital Corporation (WDC)، تلقّى 26.0182 سهماً كحقوق تعويض توزيعي مرتبطة بوحدات الأسهم المقيدة (RSUs) التي مُنحت سابقاً. يعرض التقرير التعويضات التوزيعية المتراكمة على RSUs والتي تكتسب نسبياً مع RSUs الأساسية؛ كل تعويض توزيعي يمثل حقاً مشروطاً لتلقي سهم عادي واحد أو قيمته النقدية. يبيّن النموذج 4 تاريخ الصفقة كـ 09/18/2025 وهو مُوقّع من قبل وكيل قانوني في 09/22/2025.

Matthew E. Massengill,西部数据公司(WDC)的董事,因与此前授予的受限股票单位(RSU)相关的股息等值权而获得 26.0182 股。披露显示 RSU 上累计的股息等值与基础 RSU 按比例归属;每个股息等值代表有条件地收到一股普通股或其现金价值的权利。 Form 4 将交易日期记为 09/18/2025,并由代理人于 2025-09-22签署。

Positive
  • 26.0182 shares issued as dividend equivalents, increasing the reporting person's beneficial ownership as disclosed
  • Clear disclosure that dividend equivalents vest proportionately with underlying RSUs and may convert to either one share each or cash
Negative
  • None.

Insights

TL;DR: Director received 26.0182 shares as dividend equivalents on RSUs; routine insider compensation-related transaction with limited market impact.

The Form 4 documents a non-derivative issuance of 26.0182 common shares as dividend equivalent rights that vest with previously granted RSUs. This transaction reflects standard equity compensation mechanics rather than an open-market purchase or sale. Because the shares are dividend equivalents tied to RSU vesting, they increase the reporting person’s beneficial ownership by the stated amount but do not indicate discretionary trading by the insider. Impact on shareholder dilution is likely immaterial given the small absolute share amount disclosed.

TL;DR: Filing shows routine compensation administration; disclosure meets Section 16 reporting requirements.

The disclosure clarifies the nature of the award: dividend equivalent rights that convert to one share each (or cash) and vest pro rata with underlying RSUs. The Form 4 is properly executed by an attorney-in-fact and specifies the reporting person’s role as a director. This is a standard post-grant administrative reporting event and does not signal a change in board membership, compensation policy, or control structure.

Matthew E. Massengill, direttore della Western Digital Corporation (WDC), ha ricevuto 26.0182 azioni come diritti di dividendo legati a unità di azioni restritte (RSU) precedentemente attribuite. Il deposito riporta gli equivalenti di dividendo maturati sulle RSU e che si vestscono proporzionalmente alle RSU sottostanti; ogni equivalente di dividendo rappresenta un diritto contingente a ricevere una azione ordinaria o il relativo valore in contanti. Il Form 4 riporta la data della transazione come 09/18/2025 ed è firmato da un procuratore in fact il 09/22/2025.

Matthew E. Massengill, director de Western Digital Corporation (WDC), recibió 26.0182 acciones como derechos de dividendo vinculados a unidades de acciones restringidas (RSU) previamente otorgadas. La presentación informa los equivalentes de dividendo acumulados en las RSU y que se consolidan de forma proporcional con las RSU subyacentes; cada equivalente de dividendo representa un derecho contingente a recibir una acción ordinaria o su valor en efectivo. El Formulario 4 reporta la fecha de la transacción como 09/18/2025 y está firmado por un apoderado el 09/22/2025.

매튜 E. 매쌘길, Western Digital Corporation(WDC)의 이사로, 이전에 부여된 제한 주식 단위(RSU)와 연계된 배당금 등가권으로 26.0182주를 받았습니다. 공시에는 RSU에 누적된 배당금 등가권이 기초 RSU에 비례해 귀속되며, 각 등가권은 하나의 보통주를 받거나 그 현금 가치를 받을 수 있는 조건부 권리를 나타냅니다. Form 4에는 거래일이 09/18/2025로 기재되어 있으며, 2025-09-22에 대리인이 서명했습니다.

Matthew E. Massengill, directeur de Western Digital Corporation (WDC), a reçu 26.0182 actions en tant que droits de dividende liés à des unités d’actions restreintes (RSU) précédemment attribuées. Le dépôt indique les équivalents de dividende accumulés sur les RSU et qu’ils se consolident proportionnellement avec les RSU sousjacentes; chaque équivalent de dividende représente un droit conditionnel de recevoir une action ordinaire ou sa valeur en espèces. Le Formulaire 4 indique la date de la transaction comme 09/18/2025 et est signé par un mandataire le 09/22/2025.

Matthew E. Massengill, Direktor der Western Digital Corporation (WDC), erhielt 26.0182 Aktien als Dividendenäquivalente im Zusammenhang mit zuvor gewährten Restricted Stock Units (RSUs). Der Bericht gibt die auf RSUs aufgelaufenen Dividendenäquivalente an, die sich proportional zu den zugrunde liegenden RSUs vester; jeder Dividendenäquivalent stellt ein bedingtes Recht dar, eine Aktie des Stammkapitals zu erhalten oder deren Barwert zu erhalten. Das Formular 4 meldet das Transaktionsdatum als 09/18/2025 und ist von einem Bevollmächtigten am 09/22/2025 unterzeichnet.

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*
MASSENGILL MATTHEW 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)
09/18/2025
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
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) 09/18/2025 A 26.0182 (1) (1) Common Stock 26.0182 $0.0 72.1612 D
Explanation of Responses:
1. 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: Matthew E. Massengill 09/22/2025
** 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 transaction did Matthew E. Massengill report on Form 4 for WDC?

He reported the accrual and issuance of 26.0182 dividend equivalent rights tied to previously awarded RSUs, dated 09/18/2025.

What are the dividend equivalent rights described in the WDC Form 4?

They are contingent rights that vest with the RSUs and represent the right to receive one share of common stock or the cash value per dividend equivalent.

When was the Form 4 for this transaction signed?

The Form 4 was executed by an attorney-in-fact and signed on 09/22/2025.

Does the Form 4 indicate a purchase or sale of WDC common stock?

No. The filing reports issuance of dividend equivalent rights related to RSUs, not an open-market purchase or sale.

What is the reporting person's relationship to WDC?

The reporting person, Matthew E. Massengill, is identified as a Director of Western Digital Corporation.
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