Insiders who have reported open-market trades at the same companies as Joseph Timothy Grumski. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Kerry C. Duggan - $49K in PESI purchases and sales on record
Larry Shelton - $18K in PESI purchases and sales on record
Mark Duff - $7K in PESI purchases and sales on record
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Joseph Timothy Grumski is a corporate insider, tracked as Director of PERMA FIX ENVIRONMENTAL SERVICES INC (PESI). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Joseph Timothy Grumski submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Joseph Timothy Grumski is Director of PERMA FIX ENVIRONMENTAL SERVICES INC (PESI). 10 SEC Form 4 filings on record going back to 2024, most recently on 2 October 2026.
Recent transactions
8
The latest 8 SEC Form 4 transactions reported by Joseph Timothy Grumski.
InsiderAlpha's records for Joseph Timothy Grumski go back to 2024: 10 primary Form 4 filings, an average of 3.3 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
