X0306 4 2021-12-17 0 0000891532 PERMA FIX ENVIRONMENTAL SERVICES INC pesi 0001678382 Duff Mark 8302 DUNWOODY PLACE SUITE 250 ATLANTA GA 30350 0 1 0 0 President and CEO Common Stock 2021-12-17 4 P 0 1000 6.57 A 19321 D Common Stock 2021-12-17 4 P 0 37 6.52 A 19358 D Common Stock 2021-12-20 4 P 0 600 6.5 A 19958 D Stock Option 3.97 2022-05-15 Common Stock 50000 50000 D Stock Option 3.65 2023-07-27 Common Stock 100000 100000 D Stock Option 3.15 2025-01-17 Common Stock 25000 25000 D Stock Option 7.005 2027-10-14 Common Stock 50000 50000 D Incentive Stock Option granted 05/15/2016 under the Company's 2010 Stock Option Plan. The Option is for a six year period and vests over a three year period, at 1/3 increment per year. Incentive Stock Option granted 07/27/2017 under the Company's 2017 Stock Option Plan. The Option is for a six year period and vests over a five year period, at 1/5 increment per year. Incentive Stock Option granted 01/17/2019 under the Company's 2017 Stock Option Plan. The Option is for a six year period and vests over a five year period, at 1/5 increment per year. Incentive Stock Option granted 10/14/2021 under the Company's 2017 Stock Option Plan. The Option is for a six year period and vests over a five year period, at 1/5 increment per year. /s/Mark Duff 2021-12-20