Gene M. Zamiska - 20 Aug 2025 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Role
SVP & Princ. Acctg Officer
Signature
By: /s/ Sandra Garcia Attorney-in-Fact For: Gene Zamiska
Issuer symbol
WDC
Transactions as of
20 Aug 2025
Net transactions value
-$234,635
Form type
4
Filing time
21 Aug 2025, 18:34:59 UTC
Previous filing
23 Jun 2025
Next filing
25 Aug 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Zamiska Gene M. SVP & Princ. Acctg Officer C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY, SAN JOSE By: /s/ Sandra Garcia Attorney-in-Fact For: Gene Zamiska 21 Aug 2025 0001456385

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WDC Common Stock Options Exercise $0 +9 +0.02% $0.000000 39,613 20 Aug 2025 Direct F1
transaction WDC Common Stock Tax liability $234,635 -3,102 -7.8% $75.64 36,511 20 Aug 2025 Direct F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction WDC Dividend Equivalent Rights Options Exercise $0 -11 -16% $0.000000 56 20 Aug 2025 Common Stock 11 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

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