---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-385947"
form_type: "8-K"
ticker: "AA"
cik: "0001675149"
company_name: "Alcoa Corp"
filed_at: "2026-09-09T12:23:42+00:00"
generated_at: "2026-09-09T12:25:06.831916+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Alcoa announces $2.6B senior notes offering to fund South32 acquisition cash consideration

## Summary
- $2.6B aggregate principal: $1.3B notes due 2034 (assumed 7.00%) and $1.3B due 2036 (assumed 6.75%) from subsidiaries Alumina Pty Ltd and Alcoa Nederland Holding B.V.
- Proceeds plus cash on hand fund ~$3.1B cash portion of acquisition of South32's AliGroup (bauxite, alumina, aluminum assets); bridge loan commitments to be terminated.
- Acquisition consideration also includes 17,008,960 Alcoa shares and contingent value right up to $750M based on alumina/aluminum prices.
- Pro forma financials updated to reflect $2.6B notes and Sept 2, 2026 stock price; acquisition still subject to South32 shareholder and regulatory approvals.

## SEC filing metadata
- accession: 0001193125-26-385947
- form_type: 8-K
- ticker: AA
- cik: 0001675149
- company_name: Alcoa Corp
- filed_at: 2026-09-09T12:23:42+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1675149/000119312526385947/0001193125-26-385947-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1675149/000119312526385947/aa-20260909.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-385947
- JSON: https://secwatch.observer/filing/0001193125-26-385947.json
- Plain text: https://secwatch.observer/filing/0001193125-26-385947.txt

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