LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM

Reporting ownerCIK 0001232826

Matthew E. Massengill

14 transactions in one company, from February 5, 2026 to September 17, 2026.

By company

Where this insider traded.

Company	Ticker	Trades	Bought	Sold
WESTERN DIGITAL CORP	WDC	14	—	$9.6M

14 in total, newest filings first.

Company	Ticker	Insider	Date	Code	Shares	Price	Value
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDirDERIV	Sep 17	A	10	$0.00	—?
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDirDERIV	Jun 17	A	6	$0.00	—?
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDirDERIV	Mar 18	A	12	$0.00	—?
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	400	$268.06	$107K
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	916	$265.92	$244K
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	2,200	$264.99	$583K
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	2,600	$264.01	$686K
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	2,300	$262.77	$604K
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	3,597	$261.71	$941K
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	5,987	$260.57	$1.6M
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	4,915	$259.59	$1.3M
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	7,000	$258.67	$1.8M
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	4,411	$257.69	$1.1M
WESTERN DIGITAL CORP	WDC	Matthew E. MassengillDir	Feb 5	SPLAN	2,600	$256.63	$667K