Perma-Fix Environmental Services Inc.
Last updated September 27, 2026
Organization details
- Legal name
- Perma-Fix Environmental Services Inc.
- Ownership
- Public
- Status
- Active
- Headquarters country
- United States
- Ticker symbol
- PESI
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0000891532
Board of directors
-
Joe Reeder · DirectorSince 2023
-
Joseph Timothy Grumski · DirectorSince 2023
-
Kerry C. Duggan · DirectorSince 2023
-
Larry Shelton · DirectorSince 2023
-
Louis F. Centofanti · Director · EVP of Strategic InitiativesSince 2023
-
Mark A. Zwecker · DirectorSince 2023
-
Mark Duff · Director · President and CEOSince 2023
-
Thomas Bostick · DirectorSince 2023
-
Zach Paul Wamp · DirectorSince 2023
Chief executives
Mark Duff
· President and CEO
Dates unknown
Director election results
Annual meeting of July 22, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
96.7%
Board connections
1 of this board's directors also sit on 1 other board.
- via Thomas Bostick
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jul 13, 2026 | Larry Shelton Director | Option exercise | +2,400 | $4.60 | $11,040 |
| Jul 1, 2026 | Thomas Bostick Director | Grant or award | +1,213 | $10.72 | $13,000 |
| Jul 1, 2026 | Kerry C. Duggan Director | Grant or award | +819 | $10.72 | $8,778 |
| Jul 1, 2026 | Joseph Timothy Grumski Director | Grant or award | +1,528 | $10.72 | $16,376 |
| Jul 1, 2026 | Larry Shelton Director | Grant or award | +1,365 | $10.72 | $14,629 |
| Jul 1, 2026 | Zach Paul Wamp Director | Grant or award | +849 | $10.72 | $9,099 |
| Jul 1, 2026 | Joe Reeder Director | Grant or award | +1,458 | $10.72 | $15,626 |
| Jul 1, 2026 | Mark A. Zwecker Director | Grant or award | +1,167 | $10.72 | $12,507 |
| Apr 1, 2026 | Mark A. Zwecker Director | Grant or award | +1,520 | $8.02 | $12,190 |
| Apr 1, 2026 | Joe Reeder Director | Grant or award | +1,886 | $8.02 | $15,126 |
| Apr 1, 2026 | Kerry C. Duggan Director | Grant or award | +1,054 | $8.02 | $8,453 |
| Apr 1, 2026 | Joseph Timothy Grumski Director | Grant or award | +2,105 | $8.02 | $16,882 |
| Apr 1, 2026 | Thomas Bostick Director | Grant or award | +1,559 | $8.02 | $12,503 |
| Apr 1, 2026 | Zach Paul Wamp Director | Grant or award | +1,094 | $8.02 | $8,774 |
| Apr 1, 2026 | Larry Shelton Director | Grant or award | +1,824 | $8.02 | $14,628 |
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