Cynthia L. Tregillis - 18 Jun 2025 Form 4 Insider Report for WESTERN DIGITAL CORP (WDC)

Role
CLO and Corp. Sec.
Signature
By: /s/ Sandra Garcia Attorney-in-Fact For: Cynthia Tregillis
Issuer symbol
WDC
Transactions as of
18 Jun 2025
Net transactions value
-$12,095
Form type
4
Filing time
23 Jun 2025, 18:12:37 UTC
Previous filing
28 May 2025
Next filing
22 Jul 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Tregillis Cynthia L CLO and Corp. Sec. C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY, SAN JOSE By: /s/ Sandra Garcia Attorney-in-Fact For: Cynthia Tregillis 23 Jun 2025 0002057088

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WDC Common Stock Options Exercise $0 0 0% $0.000000 157,888 20 Jun 2025 Direct F1, F2
transaction WDC Common Stock Tax liability $12,095 -204 -0.13% $59.29 157,684 20 Jun 2025 Direct F3

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 +223 $0.000000 223 18 Jun 2025 Common Stock 223 Direct F4
transaction WDC Dividend Equivalent Rights Options Exercise $0 -1 -0.4% $0.000000 222 20 Jun 2025 Common Stock 1 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 Includes 227 shares acquired under the Issuer's Employee Stock Purchase Plan on May 31, 2025.
F3 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
F4 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.