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.
Trading Pattern
InsiderAlpha's records for Henry R. Keizer go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
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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