Irving Tan - 18 Sep 2025 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Role
Chief Executive Officer, Director
Signature
By: /s/ Sandra Garcia Attorney-in-Fact For: Irving Tan
Issuer symbol
WDC
Transactions as of
18 Sep 2025
Net transactions value
-$83,065
Form type
4
Filing time
22 Sep 2025, 18:26:07 UTC
Previous filing
28 Aug 2025
Next filing
05 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Tan Irving Chief Executive Officer, Director C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY, SAN JOSE By: /s/ Sandra Garcia Attorney-in-Fact For: Irving Tan 22 Sep 2025 0001729518

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WDC Common Stock Options Exercise $0 +34 +0.01% $0.000000 666,246 20 Sep 2025 Direct F1
transaction WDC Common Stock Tax liability $83,065 -779 -0.12% $106.63 665,467 20 Sep 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 Award $0 +369 +70% $0.000000 898 18 Sep 2025 Common Stock 369 Direct F3
transaction WDC Dividend Equivalent Rights Options Exercise $0 -35 -3.9% $0.000000 863 20 Sep 2025 Common Stock 35 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).
F3 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.