SEC Form 4 · accession 0001266824-26-000188

WESTERN DIGITAL CORP · WDC

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

Reporting owner

Officer — Chief Legal Officer & Corp Sec

Period of report

Aug 25, 2026

Accepted (ET)

Aug 27, 2026 · 8:05 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0000106040

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock^F1	Aug 25, 2026	M	7	$0.00	A	112,153	D
Common Stock^F2	Aug 25, 2026	F	771	$450.75	D	111,382	D
Common Stock^F3	Aug 25, 2026	A	3,878	$0.00	A	115,260	D
Common Stock	Aug 26, 2026	S	476	$450.78	D	114,784	D
Common Stock^F1	Aug 26, 2026	M	9	$0.00	A	114,793	D
Common Stock^F2	Aug 26, 2026	F	1,631	$468.88	D	113,162	D
Common Stock	Aug 27, 2026	S	1,007	$478.36	D	112,155	D

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	8	D	—	—	Common Stock	8	287	D
Dividend Equivalent Rights^F1	—	Aug 26, 2026	M	9	D	—	—	Common Stock	9	278	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).
F3Represents 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.
F4The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 6, 2026.