# Century Aluminum Co (CENX) SEC filings and CIK

Canonical: https://sec-api.dev/companies/cenx

> CENX’s SEC CIK is 0000949157 (949157).

| Filed | Form | Filing |
| --- | --- | --- |
| 2026-11-06 | S-3ASR | https://www.sec.gov/Archives/edgar/data/949157/000110465926123901/0001104659-26-123901-index.htm |

API: GET https://sec-api.dev/api/v1/filings?cik=949157

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