SEC Form 4 · accession 0001266824-26-000187

WESTERN DIGITAL CORP · WDC

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chief Executive Officer · Director

Period of report

Aug 25, 2026

Accepted (ET)

Aug 27, 2026 · 8:05 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0000106040

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Aug 25, 2026	M	32	$0.00	A	366,347	D
Common Stock^F3	Aug 25, 2026	F	476	$450.75	D	365,871	D
Common Stock^F4	Aug 25, 2026	A	16,548	$0.00	A	382,419	D
Common Stock^F1	Aug 26, 2026	M	42	$0.00	A	382,461	D
Common Stock^F3	Aug 26, 2026	F	3,314	$468.88	D	379,147	D
Common Stock	holding	—	—		—	209,000	I	by Personal Inv. Co.

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Dividend Equivalent Rights^F1	—	Aug 25, 2026	M	32	D	—	—	Common Stock	32	816	D
Dividend Equivalent Rights^F1	—	Aug 26, 2026	M	42	D	—	—	Common Stock	42	774	D

F1The 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.
F2Since the date of the Reporting Person's last Form 4, the Reporting Person transferred 209,000 shares of the Issuer's common stock to the Reporting Person's personal investment company, organized under the laws of the Bahamas, of which the Reporting Person is the sole shareholder. The transfer constituted a change in form of beneficial ownership exempt from Section 16 pursuant to Rule 16a-13 under the Securities Exchange Act of 1934, as amended.
F3Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
F4Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.