Henry R. Keizer
Director · GRAFTECH INTERNATIONAL LTD
Individual
- 2025
- May 11, 2026
- 3
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.
- Frederic Simon - $90.42M in FROG purchases and sales in the last 12 months
- Craig A. Lampo - $90.02M in APH purchases and sales in the last 12 months
- Lee Klarich - $88.84M in PANW purchases and sales in the last 12 months
- SUMMIT PARTNERS L P - $88.55M in KVYO purchases and sales in the last 12 months
- Ronald Clarke - $88.51M in CPAY purchases and sales in the last 12 months
- Yat Tung Lam - $88.45M in CRDO purchases and sales in the last 12 months
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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.
