---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-071912"
form_type: "8-K"
ticker: "KALU"
cik: "0000811596"
company_name: "KAISER ALUMINUM CORP"
filed_at: "2024-06-11T23:59:59+00:00"
generated_at: "2026-06-01T05:11:55.736772+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Kaiser Aluminum stockholder meeting approves amended equity plan; director Osborne retires

## Summary
- Alfred E. Osborne, Jr. retired as director effective June 11, 2024; board reduced from 11 to 10.
- Stockholders approved Amended 2021 Plan with 263,000 new shares (total 788,000 shares available).
- Vote results: plan approval 97.1% for; executive compensation advisory 98.5% for.
- Directors elected: Michael C. Arnold, David A. Foster, Richard P. Grimley (Class III, term to 2027).

## SEC filing metadata
- accession: 0000950170-24-071912
- form_type: 8-K
- ticker: KALU
- cik: 0000811596
- company_name: KAISER ALUMINUM CORP
- filed_at: 2024-06-11T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/811596/000095017024071912/0000950170-24-071912-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/811596/000095017024071912/kalu-20240611.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-071912
- JSON: https://secwatch.observer/filing/0000950170-24-071912.json
- Plain text: https://secwatch.observer/filing/0000950170-24-071912.txt

## Key facts
- Executive change
  Alfred E. Osborne, Jr. retired as Director at KAISER ALUMINUM CORP.
  - Action: retired
  - Role: Director
  source text: Alfred E. Osborne, Jr. retired as a director of the Company effective June 11, 2024
  evidence_url: https://www.sec.gov/Archives/edgar/data/811596/000095017024071912/0000950170-24-071912-index.htm

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