CENX - CIK 0000949157
CENTURY ALUMINUM CO has filed 1,641 documents with the SEC between 1996 and 2026. The most frequent type is insider trade (656 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| S-8 POS | - | 2010-12-29 | - |
| S-8 POS | - | 2010-12-29 | - |
| Insider trade | 4 | 2010-12-22 | 2010-12-21 |
| Quarterly report | 10-Q | 2010-11-09 | 2010-09-30 |
| Insider trade | 4 | 2010-11-05 | 2010-11-04 |
| Major company event | 8-K | 2010-10-29 | 2010-10-29 |
| Major company event | 8-K | 2010-10-26 | 2010-10-26 |
| Insider trade | 4 | 2010-10-01 | 2010-09-30 |
| Activist ownership stake (update) | SC 13D/A | 2010-09-16 | - |
| Insider trade | 4 | 2010-09-16 | 2010-09-15 |
| Insider trade | 4 | 2010-09-16 | 2010-09-14 |
| Insider trade | 4 | 2010-09-13 | 2010-09-10 |
| Insider trade | 4 | 2010-09-13 | 2010-09-10 |
| Insider trade | 4 | 2010-09-07 | 2010-09-02 |
| Insider trade | 4 | 2010-09-07 | 2010-09-02 |
| Quarterly report | 10-Q | 2010-08-09 | 2010-06-30 |
| Insider trade | 4 | 2010-08-06 | 2010-08-05 |
| Major company event | 8-K | 2010-07-27 | 2010-07-27 |
| Insider trade | 4 | 2010-07-06 | 2010-06-30 |
| Activist ownership stake (update) | SC 13D/A | 2010-07-06 | - |
| Activist ownership stake (update) | SC 13D/A | 2010-07-02 | - |
| Major company event | 8-K | 2010-07-02 | 2010-07-01 |
| Employee plan annual report | 11-K | 2010-06-29 | 2009-12-31 |
| Employee plan annual report | 11-K | 2010-06-29 | 2009-12-31 |
| Major company event | 8-K | 2010-06-14 | 2010-06-08 |
| New insider ownership | 3 | 2010-06-11 | 2010-06-08 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| Insider trade | 4 | 2010-06-11 | 2010-06-09 |
| New insider ownership | 3 | 2010-06-11 | 2010-06-08 |
| Insider trade | 4 | 2010-06-02 | 2010-06-01 |
| Insider trade | 4 | 2010-05-14 | 2010-05-12 |
| Quarterly report | 10-Q | 2010-05-10 | 2010-03-31 |
| Major company event | 8-K | 2010-05-04 | 2010-05-03 |
| Annual report to shareholders | ARS | 2010-04-29 | 2009-12-31 |
| Major company event | 8-K | 2010-04-27 | 2010-04-27 |
| Proxy statement | DEF 14A | 2010-04-21 | 2010-04-21 |
| Major company event | 8-K | 2010-04-21 | 2010-04-15 |
| Major company event | 8-K | 2010-04-15 | 2010-04-14 |
| Passive ownership stake (update) | SC 13G/A | 2010-04-12 | - |
| Activist ownership stake (update) | SC 13D/A | 2010-04-07 | - |
| Insider trade | 4 | 2010-04-07 | 2010-03-31 |
| Major company event | 8-K | 2010-04-07 | 2010-04-06 |
| Major company event | 8-K | 2010-03-31 | 2010-03-31 |
| Insider trade | 4 | 2010-03-24 | 2010-03-22 |