---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-032082"
form_type: "8-K"
ticker: "CENX"
cik: "0000949157"
company_name: "CENTURY ALUMINUM CO"
filed_at: "2026-05-07T23:59:59+00:00"
generated_at: "2026-05-14T22:25:48.699908+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Century Aluminum Q1 2026 net income $337.5M, adjusted EBITDA rises 36% QoQ

## Summary
- Net income $337.5M ($3.23 diluted EPS) vs $1.8M ($0.02) in Q4 2025.
- Adjusted net income $170.7M ($1.63 adj. EPS); adjusted EBITDA $231.4M vs $170.6M.
- Net sales $649.2M (up 2% QoQ); aluminum shipments 122,865 tonnes (down 12% QoQ).
- GAAP results include large non-recurring gains; adjusted metrics show improved operations.

## SEC filing metadata
- accession: 0001628280-26-032082
- form_type: 8-K
- ticker: CENX
- cik: 0000949157
- company_name: CENTURY ALUMINUM CO
- filed_at: 2026-05-07T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/949157/000162828026032082/0001628280-26-032082-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/949157/000162828026032082/cenx-20260507.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-032082
- JSON: https://secwatch.observer/filing/0001628280-26-032082.json
- Plain text: https://secwatch.observer/filing/0001628280-26-032082.txt

## Source-grounded claims
- claim_id: 7b3eec7c91274535abe966076fa8786d07e75c07
  claim: CENTURY ALUMINUM CO reported first quarter 2026 results: revenue $649.2, net income $337.5, EPS $3.23.
  evidence_excerpt: first quarter 2026 results. First Quarter 2026 Financial Results $MM (except shipments and per share data) Q1 2026 Q4 2025 Aluminum shipments (tonnes) 122,865 140,257 Net sales $ 649.2 $ 633.7 Net income attributable to Century $ 337.5 $ 1.8 Diluted earnings per share attributable to Century $ 3.23 $ 0.02 Adjusted net income attributable to Century (1) $ 170.7 $
  evidence_url: https://www.sec.gov/Archives/edgar/data/949157/000162828026032082/0001628280-26-032082-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.