---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-013295"
form_type: "8-K"
ticker: "KALU"
cik: "0000811596"
company_name: "KAISER ALUMINUM CORP"
filed_at: "2023-04-18T23:59:59+00:00"
generated_at: "2026-06-17T01:02:17.048302+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Kaiser Aluminum appoints Richard P. Grimley to board of directors

## Summary
- Richard P. Grimley, 64, appointed on April 17, 2023, to fill a board vacancy.
- Grimley brings experience from Ball Corp (SVP Global Ops 2016-2021) and Rexam.
- He will serve as Class III director until 2024 annual meeting; on compensation and ESG committees.
- USW agreed to treat Grimley as a Union Director under the director designation agreement.

## SEC filing metadata
- accession: 0000950170-23-013295
- form_type: 8-K
- ticker: KALU
- cik: 0000811596
- company_name: KAISER ALUMINUM CORP
- filed_at: 2023-04-18T23:59:59+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/811596/000095017023013295/0000950170-23-013295-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/811596/000095017023013295/kalu-20230417.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-013295
- JSON: https://secwatch.observer/filing/0000950170-23-013295.json
- Plain text: https://secwatch.observer/filing/0000950170-23-013295.txt

## Key facts
- Executive change
  Richard P. Grimley was appointed as director at KAISER ALUMINUM CORP.
  - Action: appointed
  - Role: director
  source text: On April 17, 2023, the board of directors (the “Board”) of Kaiser Aluminum Corporation (the “Company”) appointed Richard P. Grimley as a director to fill the vacancy on the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/811596/000095017023013295/0000950170-23-013295-index.htm

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