---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-284711"
form_type: "8-K"
ticker: "KALU"
cik: "0000811596"
company_name: "KAISER ALUMINUM CORP"
filed_at: "2025-11-17T23:59:59+00:00"
generated_at: "2026-05-16T19:32:37.192839+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Kaiser Aluminum EVP Manufacturing takes health leave; Thomas Robb appointed SVP

## Summary
- Jason D. Walsh, EVP – Manufacturing, takes leave for health reasons effective November 17, 2025.
- Thomas H. Robb appointed SVP – Manufacturing, assuming Walsh's responsibilities immediately.
- Robb joined Kaiser in August 2024 as VP – Finance, later VP – Finance and Packaging overseeing Warrick mill coating line startup.
- Robb has over 20 years of international aluminum and metals experience and an MBA from Vanderbilt University.

## SEC filing metadata
- accession: 0001193125-25-284711
- form_type: 8-K
- ticker: KALU
- cik: 0000811596
- company_name: KAISER ALUMINUM CORP
- filed_at: 2025-11-17T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/811596/000119312525284711/0001193125-25-284711-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/811596/000119312525284711/kalu-20251114.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-284711
- JSON: https://secwatch.observer/filing/0001193125-25-284711.json
- Plain text: https://secwatch.observer/filing/0001193125-25-284711.txt

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