WESTERN DIGITAL CORP — DEFA14A Filings
33 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by WESTERN DIGITAL CORP (WDC), sorted by most recent first. Each row links to the full filing on EdgarLookup. WESTERN DIGITAL CORP has filed 33 DEFA14A documents with the SEC since 2018. To view all SEC filings by WESTERN DIGITAL CORP, see the full filings list.
All
10-K
10-K405
10-Q
10-Q/A
11-K
11-KT
144
15-12B
25
25-NSE
3
4
4/A
424B1
424B2
424B3
424B7
425
5
8-A12B
8-A12B/A
8-K
8-K/A
ARS
CERTNAS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DEFR14A
DFAN14A
EFFECT
FWP
IRANNOTICE
NT 10-K
NT 10-Q
NT 11-K
POS AM
POSASR
PRE 14A
PRES14A
S-3
S-3/A
S-3ASR
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-C
SC TO-I
SC TO-I/A
SC TO-T
SC TO-T/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
SEC STAFF LETTER
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001628280-25-044300 | Oct 6, 2025 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001308179-24-000756 | Oct 7, 2024 | — |
| DEFA14A | DEFA14A | 0001193125-24-082067 | Mar 29, 2024 | — |
| DEFA14A | DEFA14A | 0001193125-23-267647 | Nov 1, 2023 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001308179-23-001018 | Oct 5, 2023 | — |
| DEFA14A | DEFA14A | 0001193125-22-272607 | Oct 28, 2022 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-22-002480 | Oct 3, 2022 | — |
| DEFA14A | DEFA14A | 0001193125-21-315455 | Nov 1, 2021 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-21-002553 | Oct 4, 2021 | — |
| DEFA14A | DEFA14A | 0001193125-20-285555 | Nov 4, 2020 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-20-002835 | Oct 5, 2020 | — |
| DEFA14A | DEFA14A | 0001193125-19-280774 | Nov 1, 2019 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-19-003337 | Oct 1, 2019 | — |
| DEFA14A | DEFA14A | 0001193125-18-295970 | Oct 9, 2018 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-18-002862 | Sep 28, 2018 | — |
| DEFA14A | DEFA14A | 0001193125-17-319287 | Oct 25, 2017 | — |
| DEFA14A | FORM DEFA 14A | 0001626129-17-000568 | Oct 18, 2017 | — |
| DEFA14A | DEFA14A | 0001193125-17-306440 | Oct 10, 2017 | — |
| DEFA14A | DEFA14A | 0001193125-17-287344 | Sep 18, 2017 | — |
| DEFA14A | DEFA14A | 0001193125-17-287337 | Sep 18, 2017 | — |
| DEFA14A | ADDITIONAL DEFINIFIVE PROXY | 0001626129-16-000847 | Sep 22, 2016 | — |
| DEFA14A | ADDITIONAL MATERIAL | 0001626129-16-000845 | Sep 22, 2016 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-15-326404 | Sep 23, 2015 | — |
| DEFA14A | DEFA14A | 0001193125-14-350264 | Sep 23, 2014 | — |
| DEFA14A | DEFA14A | 0001193125-13-398822 | Oct 15, 2013 | — |
| DEFA14A | DEFA14A | 0001193125-13-382456 | Sep 27, 2013 | — |
| DEFA14A | NOTICE OF ACCESS | 0001193125-12-406712 | Sep 27, 2012 | — |
| DEFA14A | DEFA14A | 0000950123-11-087047 | Sep 27, 2011 | — |
| DEFA14A | DEFA14A | 0000950123-10-089579 | Sep 28, 2010 | — |
| DEFA14A | DEFA14A | 0000950123-09-046528 | Sep 28, 2009 | — |
| DEFA14A | NOTICE OF AVAILABILITY | 0000892569-08-001346 | Sep 23, 2008 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIAL | 0000898430-94-000783 | Oct 28, 1994 | — |
| DEFA14A | DEFINITIVE ADD'L MATERIALS | 0000898430-94-000730 | Oct 11, 1994 | — |