Greedy Insider
PESI Insider Trades and Greediness Scores
PERMA FIX ENVIRONMENTAL SERVICES INC (PESI) insider trades: since Jan 2, 2026, Greedy Insider recorded 28 open-market buys and 2 sales on Form 4 from 8 insiders. The strongest recent filing scored 83 (Strong).
Who bought and who sold
Across the last 30 scoreable Form 4 transactions in PESI, 28 were open-market purchases and 2 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| Wamp Zach Paul | Director | Buy | 775.0 | 9096.5625 | 2026-10-01 | 78 | View |
| REEDER JOE | Director | Buy | 1289.0 | 15129.638 | 2026-10-01 | 78 | View |
| Shelton Larry | Director | Buy | 1246.0 | 14624.925 | 2026-10-01 | 78 | View |
| Grumski Joseph Timothy | Director | Buy | 1438.0 | 16878.525 | 2026-10-01 | 78 | View |
| Bostick Thomas | Director | Buy | 1108.0 | 13005.15 | 2026-10-01 | 79 | View |
| Duggan Kerry C | Director | Buy | 748.0 | 8779.65 | 2026-10-01 | 79 | View |
| ZWECKER MARK A | Director | Buy | 1038.0 | 12183.525 | 2026-10-01 | 78 | View |
| Grumski Joseph Timothy | Director | Buy | 1528.0 | 16376.34 | 2026-07-01 | 80 | View |
| ZWECKER MARK A | Director | Buy | 1167.0 | 12507.322 | 2026-07-01 | 81 | View |
| Bostick Thomas | Director | Buy | 1213.0 | 13000.327 | 2026-07-01 | 81 | View |
The strongest recent filing
ZWECKER MARK A (Director) bought 1,520 shares of PERMA FIX ENVIRONMENTAL SERVICES INC on Apr 1, 2026, a filing that scored 83 (Strong). It scored Strong because several insiders moved the same way within a week and it was direct personal ownership. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
A cluster buy is present: 7 insiders (ZWECKER MARK A, REEDER JOE, Duggan Kerry C, Grumski Joseph Timothy) traded PESI the same direction within a 7-day window. Shared conviction is a stronger structural signal than a lone trade.
How this compares with PERMA FIX ENVIRONMENTAL SERVICES INC's own history
Open-market buys make up 93% of the 30 scoreable PESI transactions on record between Jan 2, 2026 and Oct 1, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 30
- Open-market buys: 28
- Sales: 2
- Distinct insiders: 8
- Strongest recent Greediness Score: 83 (Strong)
Primary sources
Related
- Strongest filing
- PESI in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.