Form 4 for WDC Western Digital

Accepted 2026-02-27 00:00:00 ET · period of report 2026-02-25 · accession 0001266824-26-000028 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-02-27	2026-02-25	WDC	Tan Irving	CEO, Dir	F - Tax	$290.95	-425	622.6K	-0.1%	-$123.7K
D	2026-02-27	2026-02-25	WDC	Tan Irving	CEO, Dir	M - OptEx	$0.00	+27	623.0K	+0.0%	$0
D	2026-02-27	2026-02-25	WDC	Tan Irving	CEO, Dir	M - OptEx	$0.00	-27.02	968.48	-3%	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-02-25	F	D	425	$290.95	622,563	D	—	—	(F2) Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
2	Common	Common Stock	2026-02-25	M	A	27	$0.00	622,988	D	—	—	(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.
3	Derivative	Dividend Equivalent Rights	2026-02-25	M	D	27.02	$0.00	968.48	D	— · — to —	27.02 Common Stock	(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.