WDC SEC Filings: 8-K, 10-Q, S-3 & 424B – Western Digital

Financials

TYPE

HEADLINE

FILED AT

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Oct 22, 2026

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

Aug 14, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Apr 30, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Jan 29, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Oct 30, 2025

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

Aug 13, 2025

News

TYPE

HEADLINE

FILED AT

8-K

Western Digital Reports Fiscal First Quarter 2027 Financial Results and Raises Dividend

Oct 22, 2026

8-K

Western Digital Announces Redemption of 3.00% Convertible Senior Notes Due 2028

Sep 14, 2026

8-K/A

Exchange Agreements Result in Issuance of 4,653,572 Shares for Convertible Senior Notes Due 2028

Aug 27, 2026

8-K

Western Digital Corporation Announces Privately Negotiated Exchange of Convertible Senior Notes

Aug 26, 2026

8-K

Western Digital Reports Fiscal Fourth Quarter and Fiscal Year 2026 Financial Results

Aug 5, 2026

8-K

Western Digital Corporation Announces Privately Negotiated Exchange Agreements for Sandisk Stock

Jun 11, 2026

Prospectus

TYPE

HEADLINE

FILED AT

424B7

Form 424B7 - Prospectus [Rule 424(b)(7)]

Aug 26, 2024

424B7

900,000 Shares of Series A Convertible Perpetual Preferred Stock

Dec 22, 2023

424B2

Common Stock

Dec 9, 2021

424B2

Common Stock

Dec 7, 2021

424B2

$2,300,000,000 4.750% Senior Notes due 2026

Feb 1, 2018

424B3

June 29,2012

Jan 6, 2017

Registrations

TYPE

HEADLINE

FILED AT

S-8

Form S-8 - Securities to be offered to employees in employee benefit plans

Nov 24, 2025

S-8 POS

Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments

Jun 4, 2025

S-8 POS

Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments

Jun 4, 2025

S-8 POS

Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments

Jun 4, 2025

S-8 POS

Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments

Jun 4, 2025

S-8

Form S-8 - Securities to be offered to employees in employee benefit plans

Jun 4, 2025

Proxies

TYPE

HEADLINE

FILED AT

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Oct 5, 2026

DEF 14A

Form DEF 14A - Other definitive proxy statements

Oct 5, 2026

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Oct 6, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

Oct 6, 2025

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Oct 7, 2024

DEF 14A

Form DEF 14A - Other definitive proxy statements

Oct 7, 2024

Ownerships

TYPE

HEADLINE

FILED AT

SCHEDULE 13G/A

FMR LLC (Filed by)

Nov 5, 2026

Cole Martin I (Reporting)

Oct 30, 2026

144

Form 144 - Report of proposed sale of securities

Oct 29, 2026

Tregillis Cynthia L (Reporting)

Oct 22, 2026

144

Form 144 - Report of proposed sale of securities

Oct 21, 2026

Tregillis Cynthia L (Reporting)

Sep 21, 2026

Other

TYPE

HEADLINE

FILED AT

Form SD - Specialized disclosure report

Jun 1, 2026

Form SD - Specialized disclosure report

May 22, 2025

Form SD - Specialized disclosure report

May 23, 2024

LETTER

Form UPLOAD - SEC-generated letter

Jan 3, 2024

CORRESP

Form CORRESP - Correspondence

Dec 20, 2023

LETTER

Form UPLOAD - SEC-generated letter

Dec 7, 2023

Western Digital Corporation WDC · SEC Filings