WDC Form 144: Insider Planned Sale of 1,828 Shares on 08/22/2025

Form 144 filed for Western Digital Corp. (WDC) discloses a proposed sale of 1,828 common shares through Morgan Stanley Smith Barney LLC with an approximate aggregate market value of $136,697.84, and an approximate sale date of 08/22/2025 on NASDAQ.

Rhea-AI Filing Summary

Form 144 filed for Western Digital Corp. (WDC) discloses a proposed sale of 1,828 common shares through Morgan Stanley Smith Barney LLC with an approximate aggregate market value of $136,697.84, and an approximate sale date of 08/22/2025 on NASDAQ. The shares were acquired as restricted stock from the issuer on 08/21/2025 and payment is recorded as 08/21/2025.

The filing also lists sales by the same person, Gene M Zamiska, during the past three months totaling multiple transactions: 2,692 shares and proceeds of $203,730.56 on 08/21/2025, 468 shares for $35,418.24 on 08/21/2025, and several June and early‑June sales totaling 1,974 shares and proceeds shown per line. The notice includes broker details and the standard signature representation regarding material nonpublic information.

Positive

• Disclosure compliance: The filing provides required Rule 144 details including broker, share counts, acquisition dates, and past three‑month sales.
• Transparency on recent transactions: Multiple prior sales by Gene M Zamiska are itemized with dates and gross proceeds, allowing investors to track insider liquidity.

Negative

• None.

Insights

Securities Analyst

TL;DR: Routine insider filing showing a planned sale of 1,828 restricted shares and several recent dispositions by the same individual; informational but not clearly material.

The Form 144 documents a proposed sale through Morgan Stanley Smith Barney LLC of 1,828 common shares with an aggregate market value of $136,697.84 and an intended sale date of 08/22/2025. The shares were acquired as restricted stock on 08/21/2025, indicating a recent grant or award converted to sale intent immediately thereafter. The filing also lists multiple prior sales by Gene M Zamiska in June and August 2025 with explicit share counts and gross proceeds, providing traceable insider liquidity events. From a market-impact perspective, the disclosed volumes and dollar amounts should be compared to WDC's free float to assess materiality; the filing itself is compliant and provides the standard representations required by Rule 144.

Corporate Governance Expert

TL;DR: Disclosure aligns with Rule 144 requirements; shows insider monetization but lacks issuer identity details in header fields.

The submission includes required broker, share count, acquisition date, nature of acquisition (restricted stock), and recent sale history by the same person, demonstrating adherence to disclosure obligations. The signature block contains the customary representation about absence of undisclosed material information. Notably, several header fields in the provided extract (issuer name, filer CIK/CCC, and contact details) appear blank or redacted in this extract, which limits third‑party verification of filer identity within the provided content. Overall, the filing documents insider sales and supports transparency while the missing header data in the extract reduces completeness for external reviewers.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the WDC Form 144 disclose about the planned sale?

The notice states a proposed sale of 1,828 common shares via Morgan Stanley Smith Barney LLC with aggregate market value of $136,697.84, to occur on 08/22/2025 on NASDAQ.

When were the 1,828 shares acquired according to the filing?

The filing shows the shares were acquired as restricted stock on 08/21/2025, with payment dated 08/21/2025.

Who has recent listed sales in the filing and what are examples of proceeds?

The filing lists sales by Gene M Zamiska, including 2,692 shares on 08/21/2025 with gross proceeds of $203,730.56 and 468 shares on 08/21/2025 with $35,418.24.

Through which broker will the proposed sale be executed?

The proposed sale is to be executed through Morgan Stanley Smith Barney LLC, Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY.

Does the filing indicate any material nonpublic information by the seller?

The signer represents that they do not know any material adverse information about the issuer that has not been publicly disclosed, per the form's declaration.

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

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Accepted by SEC EDGAR 08/22/2025 - 04:02 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001456385
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	WESTERN DIGITAL CORPORATION
SEC File Number	001-08703
Address of Issuer	5601 Great Oaks Parkway San Jose CALIFORNIA 95119
Phone	(408) 717-6000
Name of Person for Whose Account the Securities are To Be Sold	GENE M ZAMISKA
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1828	136697.84	346922126	08/22/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/21/2025	Restricted Stock	ISSUER			1828	08/21/2025	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
GENE M ZAMISKA 5601 Great Oaks Parkway San Jose CA 95119	Common	08/21/2025	2692	203730.56
GENE M ZAMISKA 5601 Great Oaks Parkway San Jose CA 95119	Common	08/21/2025	468	35418.24
GENE M ZAMISKA 5601 Great Oaks Parkway San Jose CA 95119	Common	06/17/2025	245	14212.45
GENE M ZAMISKA 5601 Great Oaks Parkway San Jose CA 95119	Common	06/05/2025	565	31007.20
GENE M ZAMISKA 5601 Great Oaks Parkway San Jose CA 95119	Common	06/05/2025	812	44562.56
GENE M ZAMISKA 5601 Great Oaks Parkway San Jose CA 95119	Common	06/05/2025	352	19317.76

144: Remarks and Signature

Remarks
Date of Notice	08/22/2025
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/06/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Gene M. Zamiska
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)