---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-003796"
form_type: "8-K"
ticker: "KALU"
cik: "0000811596"
company_name: "KAISER ALUMINUM CORP"
filed_at: "2023-02-22T23:59:59+00:00"
generated_at: "2026-06-19T05:59:00.162688+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Kaiser Aluminum reports Q4 net loss $26M, full-year net loss $30M; adjusted EBITDA down 23% YoY

## Summary
- Q4 net loss $26M ($1.66 loss per diluted share); adjusted net loss $7M ($0.45 loss per share).
- Full-year net loss $30M ($1.86 loss per diluted share); adjusted net loss $2M ($0.14 loss per share).
- Q4 adjusted EBITDA $30M (8.4% margin) vs $49M (15.5% margin) in prior year; full-year adjusted EBITDA $142M (10.3% margin) vs $185M (16.6% margin).
- Conversion revenue Q4 $356M (+13% YoY); full-year $1.4B (+24% YoY) but impacted by change in alloyed metal cost presentation.
- 2023 outlook: Q1 adjusted EBITDA margin expected to improve ~200 bps from Q4; capex $170-190M; no full-year EBITDA guidance.

## SEC filing metadata
- accession: 0000950170-23-003796
- form_type: 8-K
- ticker: KALU
- cik: 0000811596
- company_name: KAISER ALUMINUM CORP
- filed_at: 2023-02-22T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- 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/811596/000095017023003796/0000950170-23-003796-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/811596/000095017023003796/kalu-20230222.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-003796
- JSON: https://secwatch.observer/filing/0000950170-23-003796.json
- Plain text: https://secwatch.observer/filing/0000950170-23-003796.txt

## Key facts
- Earnings Releases
  KAISER ALUMINUM CORP reported the quarter ended December 31, 2022 results: revenue $776 Million, net income $26 Million, EPS $1.66.
  - Period: the quarter ended December 31, 2022
  - Revenue: $776 Million
  - Net income: $26 Million
  - EPS: $1.66
  - Result: preliminary results
  source text: Fourth Quarter 2022 Highlights: o Net Sales $776 Million; Conversion Revenue $356 Million o Net Loss $26 Million; Net Loss per Diluted Share $1.66 o Adjusted Net Loss $7 Million; Adjusted Loss per Diluted Share $0.45 o Adjusted EBITDA $30 Million; Adjusted EBITDA Margin 8.4%
  evidence_url: https://www.sec.gov/Archives/edgar/data/811596/000095017023003796/0000950170-23-003796-index.htm
- Earnings Releases
  KAISER ALUMINUM CORP reported the year ended December 31, 2022 results: revenue $3.4 Billion, net income $30 Million, EPS $1.86.
  - Period: the year ended December 31, 2022
  - Revenue: $3.4 Billion
  - Net income: $30 Million
  - EPS: $1.86
  - Result: preliminary results
  source text: Full Year 2022 Highlights: o Net Sales $3.4 Billion; Conversion Revenue $1.4 Billion o Net Loss $30 Million; Net Loss per Diluted Share $1.86 o Adjusted Net Loss $2 Million; Adjusted Loss per Diluted Share $0.14 o Adjusted EBITDA $142 Million; Adjusted EBITDA Margin 10.3%
  evidence_url: https://www.sec.gov/Archives/edgar/data/811596/000095017023003796/0000950170-23-003796-index.htm

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