Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Dennis L. Zeitler 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.
- Vincent J. Arnone - $12K in FTEK purchases and sales in the last 12 months
- Ramesh Nuggihalli - $2K in FTEK purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Dennis L. Zeitler?
Dennis L. Zeitler is a corporate insider, tracked as Director of FUEL TECH, INC. (FTEK). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Dennis L. Zeitler last file a Form 4?
The most recent primary Form 4 on record is dated 5 June 2026, one of 2 filings going back to 2025.