---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-223652"
form_type: "8-K"
ticker: "AA"
cik: "0001675149"
company_name: "Alcoa Corp"
filed_at: "2025-09-30T23:59:59+00:00"
generated_at: "2026-05-17T05:16:13.741689+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Alcoa permanently closes Kwinana alumina refinery; records ~$890M charges

## Summary
- Total restructuring charges of ~$890M ($623M after-tax, $2.41/share) in Q3 2025.
- Charges include $425M for asset retirement/environmental remediation and $265M of asset impairments.
- Total cash outlays expected ~$600M over six years; ~$75M in Q4 2025 (restructuring $45M, retirement $30M).
- Refinery has 2.2M metric ton nameplate capacity; fully curtailed since June 2024; ~220 employees affected.
- Demolition and remediation to begin in 2026, continuing over next six years.

## SEC filing metadata
- accession: 0001193125-25-223652
- form_type: 8-K
- ticker: AA
- cik: 0001675149
- company_name: Alcoa Corp
- filed_at: 2025-09-30T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.05, 2.06
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1675149/000119312525223652/0001193125-25-223652-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1675149/000119312525223652/aa-20250929.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-223652
- JSON: https://secwatch.observer/filing/0001193125-25-223652.json
- Plain text: https://secwatch.observer/filing/0001193125-25-223652.txt

## Key facts
- Restructurings & Charges
  Alcoa Corp announced a restructuring with charges of approximately $890 million ($623 million (after-tax), or $2.41 per share) affecting Kwinana alumina refinery located in Western Australia (approximately 220 employees).
  - Type: restructuring
  - Charge: approximately $890 million ($623 million (after-tax), or $2.41 per share)
  - Affected area: Kwinana alumina refinery located in Western Australia
  - Headcount: approximately 220 employees
  source text: In the third quarter of 2025, the Company will record total restructuring and related charges of approximately $890 million ($623 million (after-tax), or $2.41 per share) related to the permanent closure of the Refinery, including approximately $375 million of non-cash impairment charges.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1675149/000119312525223652/0001193125-25-223652-index.htm

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