---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-016425"
form_type: "8-K"
ticker: "KALU"
cik: "0000811596"
company_name: "KAISER ALUMINUM CORP"
filed_at: "2024-02-16T23:59:59+00:00"
generated_at: "2026-06-06T00:32:13.227700+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Kaiser Aluminum director Alfred Osborne to retire June 11, 2024

## Summary
- Director Alfred E. Osborne, Jr. notified board of retirement effective June 11, 2024.
- Retirement not due to any disagreement with the company on operations, policies, or practices.
- Board expects to reduce size from 11 to 10 directors upon effective date.

## SEC filing metadata
- accession: 0000950170-24-016425
- form_type: 8-K
- ticker: KALU
- cik: 0000811596
- company_name: KAISER ALUMINUM CORP
- filed_at: 2024-02-16T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/811596/000095017024016425/0000950170-24-016425-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/811596/000095017024016425/kalu-20240212.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-016425
- JSON: https://secwatch.observer/filing/0000950170-24-016425.json
- Plain text: https://secwatch.observer/filing/0000950170-24-016425.txt

## Key facts
- Executive change
  Alfred E. Osborne, Jr. retired as Director at KAISER ALUMINUM CORP.
  - Action: retired
  - Role: Director
  source text: On February 12, 2024, Alfred E. Osborne, Jr. notified the board of directors (the “Board”) of Kaiser Aluminum Corporation (the “Company”) of his decision to retire as a director of the Company effective June 11, 2024 (the “Effective Date”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/811596/000095017024016425/0000950170-24-016425-index.htm

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