SEC Form 4 · accession 0001266824-26-000173

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 20, 2026

Accepted (ET)

Aug 24, 2026 · 6:59 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
Common Stock^F1	Aug 20, 2026	M	13	$0.00	A	575,979	D
Common Stock^F2	Aug 20, 2026	F	144	$469.05	D	575,835	D
Common Stock^F1	Aug 21, 2026	M	25	$0.00	A	575,860	D
Common Stock^F2	Aug 21, 2026	F	545	$459.44	D	575,315	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Dividend Equivalent Rights^F1	—	Aug 20, 2026	M	13	D	—	—	Common Stock	13	873	D
Dividend Equivalent Rights^F1	—	Aug 21, 2026	M	25	D	—	—	Common Stock	25	848	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.
F2Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).