Summary
Updated Aug 31, 2026
Henry R. Keizer is Director of GRAFTECH INTERNATIONAL LTD (EAF). 3 SEC Form 4 filings on record going back to 2025, most recently on 11 May 2026.
Recent Transactions
2Every recent SEC Form 4 transaction Henry R. Keizer has reported, most recent first.
Other Insiders Active in the Same Sector
No other insider has filed at Henry R. Keizer's companies, so these are insiders reporting open-market trades at other companies in the same sector.
- Kenneth Duda - $79.39M of ANET open-market activity in the last 12 months
- Ken Xie - $78.15M of FTNT open-market activity in the last 12 months
- Deming Xiao - $76.43M of MPWR open-market activity in the last 12 months
- Maurice Sciammas - $76.13M of MPWR open-market activity in the last 12 months
- Daniel Dines - $76.08M of PATH open-market activity in the last 12 months
- Satya Nadella - $75.32M of MSFT 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 Henry R. Keizer?
Henry R. Keizer is a corporate insider, tracked as Director of GRAFTECH INTERNATIONAL LTD (EAF). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Henry R. Keizer last file a Form 4?
The most recent primary Form 4 on record is dated 11 May 2026, one of 3 filings going back to 2025.
Where can I see all of Henry R. Keizer'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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