WESTERN DIGITAL CORP — Director's Dealing 2025

Sep 23, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTERN DIGITAL CORP (WDC)
CIK: 0000106040
Period of Report: 2025-09-18

Reporting Person: Tan Irving (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-20	Common Stock	M	34	$0.0	Acquired	666246	Direct
2025-09-20	Common Stock	F	779	$106.63	Disposed	665467	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-09-18	Dividend Equivalent Rights	$	A	368.7967	Acquired		Common Stock (368.7967)	Direct
2025-09-20	Dividend Equivalent Rights	$	M	34.5851	Disposed		Common Stock (34.5851)	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).

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.