---
schema_version: "secwatch.filing_event.v1"
accession: "0000949157-23-000032"
form_type: "8-K"
ticker: "CENX"
cik: "0000949157"
company_name: "CENTURY ALUMINUM CO"
filed_at: "2023-05-08T23:59:59+00:00"
generated_at: "2026-06-15T15:31:38.062734+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Century Aluminum narrows Q1 net loss to $38.6M; EBITDA turns positive at $24.1M

## Summary
- Q1 net loss of $38.6M, improved from Q4 loss of $113.5M; diluted loss per share $0.42 vs $1.24.
- Adjusted EBITDA of $24.1M versus -$12.4M in Q4; adjusted loss per share $0.11 (improved from $0.31).
- Shipments 181,165 tonnes (+7% QoQ); net sales $552.4M, up 4% from Q4.
- Realized LME aluminum price $2,350/T (+$42/T); Kentucky energy costs fell 47% to $30/MWh.
- Acquired 55% interest in Jamalco bauxite/alumina operation; total liquidity $241.0M as of March 31.

## SEC filing metadata
- accession: 0000949157-23-000032
- form_type: 8-K
- ticker: CENX
- cik: 0000949157
- company_name: CENTURY ALUMINUM CO
- filed_at: 2023-05-08T23:59:59+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/949157/000094915723000032/0000949157-23-000032-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/949157/000094915723000032/cenx-20230508.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000949157-23-000032
- JSON: https://secwatch.observer/filing/0000949157-23-000032.json
- Plain text: https://secwatch.observer/filing/0000949157-23-000032.txt

## Key facts
- Earnings Releases
  CENTURY ALUMINUM CO reported financial results for quarter ended March 31, 2023.
  - Period: quarter ended March 31, 2023
  - Result: reported results
  source text: On May 8, 2023 , Century Aluminum Company (the "Company") issued a press release announcing its results of operations for quarter ended March 31, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/949157/000094915723000032/0000949157-23-000032-index.htm

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