Mark Duff
CIK 1678382 · President and CEO · last filed 2025-09-12
Mark Duff is a President and CEO who has filed 28 SEC Form 4 insider transactions across 1 company since 2017. The most recent filing shows the insider bought $7.2K of PESI on Sep 12, 2025. Across all open-market trades the lifetime net is +$176.9K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.5M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$1.48M
1
28
$176.9K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| PESI | President and CEO | 134,556 | $10.99 | $1.48M | $176.9K | 28 | 2025-09-12 |
Recent Filings
28 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-09-12 | PESI | Buy (P) | +897 | $7.2K | EDGAR |
| 2025-03-24 | PESI | Buy (P) | +2,050 | $14.4K | EDGAR |
| 2025-03-19 | PESI | Buy (P) | +1,000 | $7.2K | EDGAR |
| 2025-01-10 | PESI | Mixed | +17,557 | $3 | EDGAR |
| 2024-09-05 | PESI | Buy (P) | +2,100 | $21.2K | EDGAR |
| 2023-12-04 | PESI | Buy (P) | +3,000 | $21.5K | EDGAR |
| 2023-05-24 | PESI | Mixed | +66,968 | -$4 | EDGAR |
| 2023-01-23 | PESI | Grant (A) | — | $0 | EDGAR |
| 2022-11-23 | PESI | Buy (P) | +1,000 | $3.9K | EDGAR |
| 2022-09-07 | PESI | Buy (P) | +1,500 | $7.1K | EDGAR |