Century Aluminum Company CENX · SEC Filings

2.9K

Century Aluminum Company, along with its associated entities, manufactures both standard and special...

Price36.62

Market Cap3.63 B

Float58.93 M

CountryUS

SectorBasic Materials

ExchangeNASDAQ

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Financials

TYPE

HEADLINE

FILED AT

10-Q

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

Nov 5, 2026

10-Q

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

Aug 6, 2026

10-Q

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

May 7, 2026

10-K

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

Mar 3, 2026

NT 10-K

Form NT 10-K - Notification of inability to timely file Form 10-K 405, 10-K, 10-KSB 405, 10-KSB, 10-KT, or 10-KT405

Mar 3, 2026

10-Q

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

Nov 6, 2025

News

TYPE

HEADLINE

FILED AT

8-K

Century Aluminum Company Reports Third Quarter 2026 Results

Nov 5, 2026

8-K

Century Aluminum Reports Second Quarter 2026 Financial Results

Aug 6, 2026

8-K

Century Aluminum Company Announces Results of 2026 Annual Meeting of Stockholders

Jun 17, 2026

8-K

Century Aluminum Company Reports First Quarter 2026 Results

May 7, 2026

8-K

Century Aluminum to Restate Financials Due to Change in Accounting for Jamalco Joint Venture Assets

Mar 3, 2026

8-K

Century Aluminum Reports Q4 and Full Year 2025 Results, Highlights Smelter Joint Venture and Restart Plans

Feb 19, 2026

Prospectus

TYPE

HEADLINE

FILED AT

424B5

Form 424B5 - Prospectus [Rule 424(b)(5)]

Jan 29, 2009

424B5

Form 424B5 - Prospectus [Rule 424(b)(5)]

Jan 27, 2009

424B5

Form 424B5 - Prospectus [Rule 424(b)(5)]

Jul 11, 2008

424B5

Form 424B5 - Prospectus [Rule 424(b)(5)]

Jul 9, 2008

424B5

Form 424B5 - Prospectus [Rule 424(b)(5)]

Jun 8, 2007

424B5

Form 424B5 - Prospectus [Rule 424(b)(5)]

May 29, 2007

Registrations

TYPE

HEADLINE

FILED AT

S-3ASR

November 2026 SHELF

Nov 6, 2026

S-8

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

Jun 16, 2025

S-3/A

Form S-3/A - Registration statement under Securities Act of 1933: [Amend]

May 12, 2023

S-3

Form S-3 - Registration statement under Securities Act of 1933

Mar 17, 2023

POSASR

Form POSASR - Post-effective Amendment to an automatic shelf registration statement

Feb 14, 2023

S-3ASR

SHELF

May 20, 2022

Proxies

TYPE

HEADLINE

FILED AT

DEFA14A

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

Apr 24, 2026

DEF 14A

Form DEF 14A - Other definitive proxy statements

Apr 24, 2026

DEFA14A

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

Jun 9, 2025

DEFA14A

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

Apr 25, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

Apr 25, 2025

DEFA14A

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

May 28, 2024

Ownerships

TYPE

HEADLINE

FILED AT

SCHEDULE 13G/A

BlackRock, Inc. (Filed by)

Oct 5, 2026

SCHEDULE 13G

STATE STREET CORP (Filed by)

Aug 7, 2026

SCHEDULE 13G/A

BlackRock, Inc. (Filed by)

Jul 27, 2026

4

Berntzen Jarl (Reporting)

Jun 17, 2026

4

GLASSER ERROL (Reporting)

Jun 17, 2026

4

Michelmore Andrew G (Reporting)

Jun 17, 2026

Other

TYPE

HEADLINE

FILED AT

SD

Form SD - Specialized disclosure report

Sep 23, 2026

LETTER

Form UPLOAD - SEC-generated letter

Mar 12, 2026

CORRESP

Form CORRESP - Correspondence

Mar 2, 2026

LETTER

Form UPLOAD - SEC-generated letter

Mar 2, 2026

CORRESP

Form CORRESP - Correspondence

Feb 17, 2026

LETTER

Form UPLOAD - SEC-generated letter

Jan 14, 2026