Western Digital Corporation

WDC·NASDAQ·$524.65Share Price as of 11/2·$181BMarket Cap as of 11/2

Financials

10-QQ1 ended 10/02/2610/23/26 10-KFY 202608/14/26 10-QQ3 ended 04/03/2605/01/26 10-QQ2 ended 01/02/2601/30/26 10-QQ1 ended 10/03/2510/31/25

Disclosures

8-KCurrent report10/22/26 8-KCurrent report09/14/26 8-K/ACurrent report (amended)08/27/26 8-KCurrent report08/26/26 8-KCurrent report08/05/26

Prospectuses and Registrations

S-8Registration of securities for employees11/24/25 S-8Registration of securities for employees06/04/25 S-8 POSPost-effective amendment (S-8)06/04/25 S-8 POSPost-effective amendment (S-8)06/04/25 S-8 POSPost-effective amendment (S-8)06/04/25

Proxies

DEF 14ADefinitive proxy10/05/26 DEFA14AAdditional proxy materials10/05/26 DEF 14ADefinitive proxy10/06/25 DEFA14AAdditional proxy materials10/06/25 DEF 14ADefinitive proxy10/07/24

Ownership

Form 4Insider transaction10/30/26 144Proposed sale of securities10/29/26 Form 4Insider transaction10/22/26 144Proposed sale of securities10/21/26 Form 4Insider transaction09/21/26

Other

ARSAnnual report to shareholders10/05/26 SDConflict Minerals disclosure06/01/26 ARSAnnual report to shareholders10/06/25 SDConflict Minerals disclosure05/22/25 ARSAnnual report to shareholders10/07/24