Summary
Updated Aug 31, 2026
James Donald Hoffman files SEC Form 4 reports at KAISER ALUMINUM CORP (KALU). 2 SEC Form 4 filings on record going back to 2025, most recently on 5 June 2026.
Recent Transactions
4Every recent SEC Form 4 transaction James Donald Hoffman has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies James Donald Hoffman files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Keith Harvey - $8.75M of KALU open-market activity in the last 12 months
- John Malcolm Donnan - $2.80M of KALU open-market activity in the last 12 months
- Brett Wilcox - $2.62M of KALU open-market activity in the last 12 months
- Neal E. West - $1.48M of KALU open-market activity in the last 12 months
- Blain Tiffany - $813K of KALU open-market activity in the last 12 months
- Richard P. Grimley - $261K of KALU open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is James Donald Hoffman?
James Donald Hoffman is a corporate insider of KAISER ALUMINUM CORP (KALU). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has James Donald Hoffman submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of James Donald Hoffman's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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