Mark Duff
President and CEO at Perma-Fix Environmental Services Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 3 years
- Director since
- 2023
3 years of board service in total across 1 board, counting each seat separately. Longest: Perma-Fix Environmental Services Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Perma-Fix Environmental Services Inc. July 24, 202597.3%
-
Perma-Fix Environmental Services Inc. July 18, 202495.9%
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.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 11, 2025 | Perma-Fix Environmental Services Inc. | Open-market purchase | +897 | $8.05 | $7,221 |
| Mar 21, 2025 | Perma-Fix Environmental Services Inc. | Open-market purchase | +750 | $7.02 | $5,265 |
| Mar 21, 2025 | Perma-Fix Environmental Services Inc. | Open-market purchase | +650 | $7.03 | $4,570 |
| Mar 21, 2025 | Perma-Fix Environmental Services Inc. | Open-market purchase | +650 | $7.05 | $4,583 |
| Mar 18, 2025 | Perma-Fix Environmental Services Inc. | Open-market purchase | +500 | $7.10 | $3,550 |
| Mar 18, 2025 | Perma-Fix Environmental Services Inc. | Open-market purchase | +500 | $7.20 | $3,600 |
| Jan 8, 2025 | Perma-Fix Environmental Services Inc. | Option exercise | +25,000 | $3.15 | $78,750 |
| Jan 8, 2025 | Perma-Fix Environmental Services Inc. | Shares withheld for tax | −7,443 | $10.58 | $78,747 |
| Sep 4, 2024 | Perma-Fix Environmental Services Inc. | Open-market purchase | +500 | $9.91 | $4,955 |
| Sep 4, 2024 | Perma-Fix Environmental Services Inc. | Open-market purchase | +350 | $9.95 | $3,483 |
| Sep 3, 2024 | Perma-Fix Environmental Services Inc. | Open-market purchase | +500 | $10.48 | $5,240 |
| Sep 3, 2024 | Perma-Fix Environmental Services Inc. | Open-market purchase | +750 | $10.07 | $7,553 |
| Dec 1, 2023 | Perma-Fix Environmental Services Inc. | Open-market purchase | +750 | $7.07 | $5,303 |
| Dec 1, 2023 | Perma-Fix Environmental Services Inc. | Open-market purchase | +750 | $7.27 | $5,453 |
| Dec 1, 2023 | Perma-Fix Environmental Services Inc. | Open-market purchase | +750 | $7.28 | $5,460 |
Reviews (0)
Sign in to write a review.
No reviews yet. Be the first to write one.