Mark A. Zwecker serves as Executive at PERMA FIX ENVIRONMENTAL SERVICES INC, where they oversee executive responsibilities. Since joining the company, Mark A. Zwecker has executed 82 insider transactions totaling $0, demonstrating a balanced approach to their equity position. Their most recent transaction on Jan 2, 2026 involved receiving (via award) 1,325 shares valued at $12.5K.
Mark A. Zwecker currently holds 242,519 shares of PERMA FIX ENVIRONMENTAL SERVICES INC (PESI), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark A. Zwecker has been a net neutral trader of PESI stock. They have purchased $0 and sold $0 worth of shares.
Mark A. Zwecker's most recent insider trade was on Jan 2, 2026, when they sold 1,325 shares at $9.44 per share.
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| $7.58 |
| Discretionary |
| Aug 28, 2025 | PESI | $10.1K | Option Exercise | 2,400 | $4.19 | Discretionary |
| Jul 1, 2025 | PESI | $12.5K | Award | 1,586 | $7.89 | Discretionary |
| Sep 9, 2024 | PESI | $8.9K | Option Exercise | 2,400 | $3.70 | Discretionary |
| Apr 1, 2024 | PESI | $12.2K | Award | 1,367 | $8.92 | Discretionary |
| Jan 2, 2024 | PESI | $12.2K | Award | 2,067 | $5.90 | Discretionary |
| Oct 2, 2023 | PESI | $12.5K | Award | 1,596 | $7.84 | Discretionary |
| Jul 3, 2023 | PESI | $12.2K | Award | 1,480 | $8.24 | Discretionary |
| Apr 25, 2023 | PESI | $6.7K | Option Exercise | 2,400 | $2.79 | Discretionary |
| Apr 3, 2023 | PESI | $12.2K | Award | 1,379 | $8.84 | Discretionary |
| Jan 3, 2023 | PESI | $12.2K | Award | 4,603 | $2.65 | Discretionary |
| Oct 3, 2022 | PESI | $12.2K | Award | 3,627 | $3.36 | Discretionary |
| Jul 1, 2022 | PESI | $12.2K | Award | 3,131 | $3.89 | Discretionary |
| Apr 1, 2022 | PESI | $12.2K | Award | 2,939 | $4.15 | Discretionary |
| Jan 3, 2022 | PESI | $12.5K | Award | 2,636 | $4.75 | Discretionary |
| Oct 1, 2021 | PESI | $12.5K | Award | 2,509 | $4.99 | Discretionary |
| Jul 1, 2021 | PESI | $12.2K | Award | 2,273 | $5.36 | Discretionary |
| Apr 1, 2021 | PESI | $12.2K | Award | 2,217 | $5.50 | Discretionary |
| Jan 4, 2021 | PESI | $9.4K | Award | 2,105 | $4.48 | Discretionary |
| Oct 1, 2020 | PESI | $9.4K | Award | 1,783 | $5.29 | Discretionary |
| Jul 1, 2020 | PESI | $9.7K | Award | 2,034 | $4.79 | Discretionary |
| Apr 1, 2020 | PESI | $9.4K | Award | 2,412 | $3.91 | Discretionary |
| Jan 2, 2020 | PESI | $9.4K | Award | 1,381 | $6.83 | Discretionary |
| Oct 1, 2019 | PESI | $9.4K | Award | 2,768 | $3.41 | Discretionary |
| Jul 1, 2019 | PESI | $9.7K | Award | 3,325 | $2.93 | Discretionary |
| Apr 1, 2019 | PESI | $10.1K | Award | 3,827 | $2.63 | Discretionary |
| Jan 2, 2019 | PESI | $9.4K | Award | 5,348 | $1.76 | Discretionary |
| Oct 1, 2018 | PESI | $9.4K | Award | 2,992 | $3.15 | Discretionary |
| Jul 2, 2018 | PESI | $9.4K | Award | 2,793 | $3.38 | Discretionary |