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  4. [Form 4] WESTERN DIGITAL CORP Insider Trading Activity

Western Digital CEO insider sale: 20,000 shares via 10b5-1

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Western Digital (WDC) reported insider activity by CEO and director Irving Tan. On 11/03/2025, he sold a total of 20,000 shares of common stock in multiple tranches under a Rule 10b5-1 trading plan adopted on May 12, 2025. The weighted average sale prices ranged from $149.0176 to $153.9309, with underlying trade price ranges spanning $148.38 to $154.30. Following these transactions, Tan beneficially owned 645,467 shares of Western Digital common stock.

Positive

  • None.

Negative

  • None.
Insider Tan Irving
Role Chief Executive Officer
Sold 20,000 shs ($3.01M)
Type Security Shares Price Value
Sale Common Stock 6,019 $149.0176 $897K
Sale Common Stock 6,359 $149.7897 $953K
Sale Common Stock 700 $150.9036 $106K
Sale Common Stock 2,927 $152.2435 $446K
Sale Common Stock 2,500 $153.1834 $383K
Sale Common Stock 1,495 $153.9309 $230K
Holdings After Transaction: Common Stock — 659,448 shares (Direct)
Footnotes (1)
  1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 12, 2025. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $148.38 to a high of $149.36. 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. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $149.40 to a high of $150.36. 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. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $150.50 to a high of $151.335. 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. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $151.655 to a high of $152.30. 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. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $152.73 to a high of $153.72. 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. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $153.75 to a high of $154.30. 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.
Form 4 Insider Transactions: What Each Field Means →
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).
X
 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*
Tan Irving
(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
X Officer (give title below) Other (specify below)
Chief Executive Officer
3. Date of Earliest Transaction (Month/Day/Year)
11/03/2025
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 11/03/2025 S(1) 6,019 D $149.0176(2) 659,448 D
Common Stock 11/03/2025 S(1) 6,359 D $149.7897(3) 653,089 D
Common Stock 11/03/2025 S(1) 700 D $150.9036(4) 652,389 D
Common Stock 11/03/2025 S(1) 2,927 D $152.2435(5) 649,462 D
Common Stock 11/03/2025 S(1) 2,500 D $153.1834(6) 646,962 D
Common Stock 11/03/2025 S(1) 1,495 D $153.9309(7) 645,467 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. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 12, 2025.
2. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $148.38 to a high of $149.36. 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.
3. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $149.40 to a high of $150.36. 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.
4. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $150.50 to a high of $151.335. 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.
5. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $151.655 to a high of $152.30. 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.
6. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $152.73 to a high of $153.72. 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.
7. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $153.75 to a high of $154.30. 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: Irving Tan 11/05/2025
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

How many WDC shares did the CEO sell, and on what date?

Irving Tan sold 20,000 shares on 11/03/2025 in multiple transactions.

What price range did the WDC insider sales occur at?

Weighted average prices ranged from $149.0176 to $153.9309, with trade prices from $148.38 to $154.30.

Was the WDC CEO’s sale under a 10b5-1 plan?

Yes. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted on May 12, 2025.

How many WDC shares does the CEO own after the transactions?

Following the reported sales, Irving Tan beneficially owned 645,467 shares.

What is Irving Tan’s role at Western Digital (WDC)?

He is Chief Executive Officer and a Director of Western Digital.

Were the WDC insider sales executed in multiple tranches?

Yes. Tranches included 6,019, 6,359, 700, 2,927, 2,500, and 1,495 shares.