Mark A. Zwecker

Sits on 1 board. Last updated September 28, 2026

Time on boards

Boards served
1
Current seats
1
Board service
4 years
Director since
2023

4 years of board service in total across 1 board, counting each seat separately. Longest: Perma-Fix Environmental Services Inc., 3 years.

3 years ยท Since 2023

Shareholder support

Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

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
Jul 1, 2026 Perma-Fix Environmental Services Inc. Grant or award +1,167 $10.72 $12,507
Apr 1, 2026 Perma-Fix Environmental Services Inc. Grant or award +1,520 $8.02 $12,190
Jan 2, 2026 Perma-Fix Environmental Services Inc. Grant or award +1,325 $9.44 $12,508
Oct 1, 2025 Perma-Fix Environmental Services Inc. Grant or award +1,609 $7.58 $12,196
Aug 28, 2025 Perma-Fix Environmental Services Inc. Option exercise +2,400 $4.19 $10,056
Jul 1, 2025 Perma-Fix Environmental Services Inc. Grant or award +1,586 $7.89 $12,514
Apr 1, 2025 Perma-Fix Environmental Services Inc. Grant or award +2,235 $5.45 $12,181
Jan 2, 2025 Perma-Fix Environmental Services Inc. Grant or award +1,468 $8.30 $12,184
Oct 1, 2024 Perma-Fix Environmental Services Inc. Grant or award +1,324 $9.20 $12,181
Sep 9, 2024 Perma-Fix Environmental Services Inc. Option exercise +2,400 $3.70 $8,880
Jul 1, 2024 Perma-Fix Environmental Services Inc. Grant or award +1,690 $7.60 $12,844
Apr 1, 2024 Perma-Fix Environmental Services Inc. Grant or award +1,367 $8.92 $12,194
Jan 2, 2024 Perma-Fix Environmental Services Inc. Grant or award +2,067 $5.90 $12,195
Oct 2, 2023 Perma-Fix Environmental Services Inc. Grant or award +1,596 $7.84 $12,513
Jul 3, 2023 Perma-Fix Environmental Services Inc. Grant or award +1,480 $8.24 $12,195

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