WESTERN DIGITAL CORP — Director's Dealing 2025

Jul 22, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTERN DIGITAL CORP (WDC)
CIK: 0000106040
Period of Report: 2025-07-20

Reporting Person: Tregillis Cynthia L (CLO and Corp. Sec.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-07-20	Common Stock	M	5	$0.0	Acquired	157689	Direct
2025-07-20	Common Stock	F	1306	$68.0	Disposed	156383	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-07-20	Dividend Equivalent Rights	$	M	5.6023	Disposed		Common Stock (5.6023)	Direct

Footnotes

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).