{"transactions":[{"id":934750,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Stock Option","published_at":"2026-01-21T09:26:00.000Z","date":"2026-01-20","kind":"exercise","planned":false,"acquired":false,"shares":6000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"January 20, 2026,, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on January 20, 2026, (as determined in accordance with the 2017 Plan) was $13.71 per share, the Company withheld 1,729 shares of Common Stock ($23,700 divided by $13.71) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Incentive stock option granted 01/19/2023 under the Company's 2017 Stock Option Plan for the purchase of up to 30,000 shares of the Company's Common Stock.The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":12000,"derivative":{"exercise_price":3.95,"expiration_date":"2029-01-19","underlying":"Common Stock","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0001493152-26-003012","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315226003012/ownership.xml","form_type":"4"}},{"id":934749,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Stock Option","published_at":"2026-01-21T09:26:00.000Z","date":"2026-01-20","kind":"exercise","planned":false,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 20, 2026, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on January 20, 2026, (as determined in accordance with the 2017 Plan) was $13.71 per share, the Company withheld 2,555 shares of Common Stock ($35,025 divided by $13.71) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan for the purchase of up to 25,000 shares of the Company's Common Stock. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":5000,"derivative":{"exercise_price":7.005,"expiration_date":"2027-10-14","underlying":"Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001493152-26-003012","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315226003012/ownership.xml","form_type":"4"}},{"id":934748,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2026-01-21T09:26:00.000Z","date":"2026-01-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":1729,"price":13.71,"value":23704.59,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"January 20, 2026,, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on January 20, 2026, (as determined in accordance with the 2017 Plan) was $13.71 per share, the Company withheld 1,729 shares of Common Stock ($23,700 divided by $13.71) to pay the aggregate exercise price of the option."}],"balance_after":41308,"source":{"system":"sec-edgar","filing":"0001493152-26-003012","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315226003012/ownership.xml","form_type":"4"}},{"id":934747,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2026-01-21T09:26:00.000Z","date":"2026-01-20","kind":"exercise","planned":false,"acquired":true,"shares":6000,"price":3.95,"value":23700.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"January 20, 2026,, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on January 20, 2026, (as determined in accordance with the 2017 Plan) was $13.71 per share, the Company withheld 1,729 shares of Common Stock ($23,700 divided by $13.71) to pay the aggregate exercise price of the option."}],"balance_after":43037,"source":{"system":"sec-edgar","filing":"0001493152-26-003012","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315226003012/ownership.xml","form_type":"4"}},{"id":934746,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2026-01-21T09:26:00.000Z","date":"2026-01-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":2555,"price":13.71,"value":35029.05,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 20, 2026, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on January 20, 2026, (as determined in accordance with the 2017 Plan) was $13.71 per share, the Company withheld 2,555 shares of Common Stock ($35,025 divided by $13.71) to pay the aggregate exercise price of the option."}],"balance_after":37037,"source":{"system":"sec-edgar","filing":"0001493152-26-003012","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315226003012/ownership.xml","form_type":"4"}},{"id":934745,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2026-01-21T09:26:00.000Z","date":"2026-01-20","kind":"exercise","planned":false,"acquired":true,"shares":5000,"price":7.005,"value":35025.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 20, 2026, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on January 20, 2026, (as determined in accordance with the 2017 Plan) was $13.71 per share, the Company withheld 2,555 shares of Common Stock ($35,025 divided by $13.71) to pay the aggregate exercise price of the option."}],"balance_after":39592,"source":{"system":"sec-edgar","filing":"0001493152-26-003012","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315226003012/ownership.xml","form_type":"4"}},{"id":1087731,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Stock Option","published_at":"2025-07-15T16:00:14.000Z","date":"2025-07-14","kind":"exercise","planned":false,"acquired":false,"shares":6000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On July 14, 2025, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on July 14, 2025 (as determined in accordance with the 2017 Plan) was $11.32 per share, the Company withheld 2,094 shares of Common Stock ($23,700 divided by $11.32) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Incentive stock option granted 01/19/2023 under the Company's 2017 Stock Option Plan for the purchase of up to 30,000 shares of the Company's Common Stock. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":18000,"derivative":{"exercise_price":3.95,"expiration_date":"2029-01-19","underlying":"Common Stock","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0001641172-25-019702","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000164117225019702/ownership.xml","form_type":"4"}},{"id":1087730,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Stock Option","published_at":"2025-07-15T16:00:14.000Z","date":"2025-07-14","kind":"exercise","planned":false,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On July 14, 2025, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on July 14, 2025 (as determined in accordance with the 2017 Plan) was $11.32 per share, the Company withheld 3,094 shares of Common Stock ($35,025 divided by $11.32) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan for the purchase of up to 25,000 shares of the Company's Common Stock. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":10000,"derivative":{"exercise_price":7.005,"expiration_date":"2027-10-14","underlying":"Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001641172-25-019702","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000164117225019702/ownership.xml","form_type":"4"}},{"id":1087729,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2025-07-15T16:00:14.000Z","date":"2025-07-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":2094,"price":11.32,"value":23704.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On July 14, 2025, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on July 14, 2025 (as determined in accordance with the 2017 Plan) was $11.32 per share, the Company withheld 2,094 shares of Common Stock ($23,700 divided by $11.32) to pay the aggregate exercise price of the option."}],"balance_after":34592,"source":{"system":"sec-edgar","filing":"0001641172-25-019702","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000164117225019702/ownership.xml","form_type":"4"}},{"id":1087728,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2025-07-15T16:00:14.000Z","date":"2025-07-14","kind":"exercise","planned":false,"acquired":true,"shares":6000,"price":3.95,"value":23700.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On July 14, 2025, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on July 14, 2025 (as determined in accordance with the 2017 Plan) was $11.32 per share, the Company withheld 2,094 shares of Common Stock ($23,700 divided by $11.32) to pay the aggregate exercise price of the option."}],"balance_after":36686,"source":{"system":"sec-edgar","filing":"0001641172-25-019702","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000164117225019702/ownership.xml","form_type":"4"}},{"id":1087727,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2025-07-15T16:00:14.000Z","date":"2025-07-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":3094,"price":11.32,"value":35024.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On July 14, 2025, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on July 14, 2025 (as determined in accordance with the 2017 Plan) was $11.32 per share, the Company withheld 3,094 shares of Common Stock ($35,025 divided by $11.32) to pay the aggregate exercise price of the option."}],"balance_after":30686,"source":{"system":"sec-edgar","filing":"0001641172-25-019702","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000164117225019702/ownership.xml","form_type":"4"}},{"id":1087726,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Hanford & Int. Waste Op"}}],"security":"Common Stock","published_at":"2025-07-15T16:00:14.000Z","date":"2025-07-14","kind":"exercise","planned":false,"acquired":true,"shares":5000,"price":7.005,"value":35025.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On July 14, 2025, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on July 14, 2025 (as determined in accordance with the 2017 Plan) was $11.32 per share, the Company withheld 3,094 shares of Common Stock ($35,025 divided by $11.32) to pay the aggregate exercise price of the option."}],"balance_after":33780,"source":{"system":"sec-edgar","filing":"0001641172-25-019702","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000164117225019702/ownership.xml","form_type":"4"}},{"id":1560002,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Stock Option","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"exercise","planned":false,"acquired":false,"shares":6000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 of the 30,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 2,048 shares of Common Stock ($23,700 divided by $11.57) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Incentive stock option granted 01/19/2023 under the Company's 2017 Stock Option Plan. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":24000,"derivative":{"exercise_price":3.95,"expiration_date":"2029-01-19","underlying":"Common Stock","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1560001,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Stock Option","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"exercise","planned":false,"acquired":false,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 10,000 of the 25,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $70,050. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 6,054 shares of Common Stock ($70,050 divided by $11.57) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":15000,"derivative":{"exercise_price":7.005,"expiration_date":"2027-10-14","underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1560000,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Stock Option","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"exercise","planned":false,"acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 1/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of the remaining 2,000 shares of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $6,300. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 545 shares of Common Stock ($6,300 divided by $11.57) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Incentive Stock Option granted 01/17/2019 under the Company's 2017 Stock Option Plan. The Option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 1/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of the remaining 2,000 shares of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $6,300. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 545 shares of Common Stock ($6,300 divided by $11.57) to pay the aggregate exercise price of the option."}],"balance_after":0,"derivative":{"exercise_price":3.15,"expiration_date":"2025-01-17","underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1559999,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"tax_withholding","planned":false,"acquired":false,"shares":2048,"price":11.57,"value":23695.36,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 of the 30,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 2,048 shares of Common Stock ($23,700 divided by $11.57) to pay the aggregate exercise price of the option."}],"balance_after":28780,"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1559998,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"exercise","planned":false,"acquired":true,"shares":6000,"price":3.95,"value":23700.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 1/19/2023 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 6,000 of the 30,000 shares of the Company's Common Stock at an exercise price of $3.95 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 2,048 shares of Common Stock ($23,700 divided by $11.57) to pay the aggregate exercise price of the option."}],"balance_after":30828,"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1559997,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"tax_withholding","planned":false,"acquired":false,"shares":6054,"price":11.57,"value":70044.78,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 10,000 of the 25,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $70,050. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 6,054 shares of Common Stock ($70,050 divided by $11.57) to pay the aggregate exercise price of the option."}],"balance_after":24828,"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1559996,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"exercise","planned":false,"acquired":true,"shares":10000,"price":7.005,"value":70050.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 10,000 of the 25,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $70,050. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 6,054 shares of Common Stock ($70,050 divided by $11.57) to pay the aggregate exercise price of the option."}],"balance_after":30882,"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1559995,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"tax_withholding","planned":false,"acquired":false,"shares":545,"price":11.57,"value":6305.65,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 1/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of the remaining 2,000 shares of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $6,300. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 545 shares of Common Stock ($6,300 divided by $11.57) to pay the aggregate exercise price of the option."}],"balance_after":20882,"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1559994,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2024-03-27T16:30:21.000Z","date":"2024-03-26","kind":"exercise","planned":false,"acquired":true,"shares":2000,"price":3.15,"value":6300.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 26, 2024, the Reporting Person exercised the incentive stock option granted 1/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of the remaining 2,000 shares of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $6,300. Since the fair market value of the Company's Common Stock on March 26, 2024 (as determined in accordance with the 2017 Plan) was $11.57 per share, the Company withheld 545 shares of Common Stock ($6,300 divided by $11.57) to pay the aggregate exercise price of the option."}],"balance_after":21427,"source":{"system":"sec-edgar","filing":"0001493152-24-011518","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315224011518/ownership.xml","form_type":"4"}},{"id":1766063,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Stock Option","published_at":"2023-10-04T12:16:00.000Z","date":"2023-10-02","kind":"exercise","planned":false,"acquired":false,"shares":8000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 01/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 8,000 of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $25,200. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 2,491 shares of Common Stock ($25,200,000 divided by $10.115) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Incentive Stock Option granted 01/17/2019 under the Company's 2017 Stock Option Plan. The Option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 01/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 8,000 of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $25,200. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 2,491 shares of Common Stock ($25,200,000 divided by $10.115) to pay the aggregate exercise price of the option."}],"balance_after":2000,"derivative":{"exercise_price":3.15,"expiration_date":"2025-01-17","underlying":"Common Stock","underlying_shares":8000},"source":{"system":"sec-edgar","filing":"0001493152-23-035606","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315223035606/ownership.xml","form_type":"4"}},{"id":1766062,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Stock Option","published_at":"2023-10-04T12:16:00.000Z","date":"2023-10-02","kind":"exercise","planned":false,"acquired":false,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 10/19/2017 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 20,000 shares of the Company's Common Stock at an exercise price of $3.60 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $72,000. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 7,118 shares of Common Stock ($72,000 divided by $10.115) to pay the aggregate exercise price of the option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Incentive stock option granted 10/19/2017 under the Company's 2017 Stock Option Plan. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 10/19/2017 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 20,000 shares of the Company's Common Stock at an exercise price of $3.60 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $72,000. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 7,118 shares of Common Stock ($72,000 divided by $10.115) to pay the aggregate exercise price of the option."}],"balance_after":0,"derivative":{"exercise_price":3.6,"expiration_date":"2023-10-19","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001493152-23-035606","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315223035606/ownership.xml","form_type":"4"}},{"id":1766061,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2023-10-04T12:16:00.000Z","date":"2023-10-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":2491,"price":10.115,"value":25196.465,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 01/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 8,000 of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $25,200. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 2,491 shares of Common Stock ($25,200,000 divided by $10.115) to pay the aggregate exercise price of the option."}],"balance_after":19427,"source":{"system":"sec-edgar","filing":"0001493152-23-035606","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315223035606/ownership.xml","form_type":"4"}},{"id":1766060,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2023-10-04T12:16:00.000Z","date":"2023-10-02","kind":"exercise","planned":false,"acquired":true,"shares":8000,"price":3.15,"value":25200.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 01/17/2019 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 8,000 of the 10,000 shares of the Company's Common Stock at an exercise price of $3.15 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $25,200. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 2,491 shares of Common Stock ($25,200,000 divided by $10.115) to pay the aggregate exercise price of the option."}],"balance_after":21918,"source":{"system":"sec-edgar","filing":"0001493152-23-035606","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315223035606/ownership.xml","form_type":"4"}},{"id":1766059,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2023-10-04T12:16:00.000Z","date":"2023-10-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":7118,"price":10.115,"value":71998.57,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 10/19/2017 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 20,000 shares of the Company's Common Stock at an exercise price of $3.60 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $72,000. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 7,118 shares of Common Stock ($72,000 divided by $10.115) to pay the aggregate exercise price of the option."}],"balance_after":13918,"source":{"system":"sec-edgar","filing":"0001493152-23-035606","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315223035606/ownership.xml","form_type":"4"}},{"id":1766058,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2023-10-04T12:16:00.000Z","date":"2023-10-02","kind":"exercise","planned":false,"acquired":true,"shares":20000,"price":3.6,"value":72000.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On October 2, 2023, the Reporting Person exercised the incentive stock option granted 10/19/2017 under the Company's 2017 Stock Option Plan (the \"2017 Plan\") for the purchase of 20,000 shares of the Company's Common Stock at an exercise price of $3.60 per share (the \"Option shares\"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $72,000. Since the fair market value of the Company's Common Stock on October 2, 2023 (as determined in accordance with the 2017 Plan) was $10.115 per share, the Company withheld 7,118 shares of Common Stock ($72,000 divided by $10.115) to pay the aggregate exercise price of the option."}],"balance_after":21036,"source":{"system":"sec-edgar","filing":"0001493152-23-035606","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315223035606/ownership.xml","form_type":"4"}},{"id":2049087,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Stock Option","published_at":"2023-01-23T13:30:18.000Z","date":"2023-01-19","kind":"grant","acquired":true,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Incentive stock option granted 01/19/2023 under the Company's 2017 Stock Option Plan. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":30000,"derivative":{"exercise_price":3.95,"expiration_date":"2029-01-19","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001493152-23-002161","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315223002161/ownership.xml","form_type":"4"}},{"id":2162714,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Common Stock","published_at":"2022-09-09T09:00:11.000Z","date":"2022-09-08","kind":"purchase","acquired":true,"shares":1000,"price":4.87,"value":4870.0,"ownership":{"direct":true},"balance_after":1036,"source":{"system":"sec-edgar","filing":"0001493152-22-025451","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315222025451/ownership.xml","form_type":"4"}},{"id":2541035,"issuer":{"id":5704,"kind":"organization","name":"PERMA FIX ENVIRONMENTAL SERVICES INC"},"owners":[{"id":69105,"kind":"person","name":"Grondin Richard","position":1,"cik":"0001819004","reported_name":"Grondin Richard","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP of Waste Treatment Ops"}}],"security":"Stock Option","published_at":"2021-10-18T11:21:45.000Z","date":"2021-10-14","kind":"grant","acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan. The option is for a 6 year period and vests over a 5 year period, at 1/5 increment per year."}],"balance_after":25000,"derivative":{"exercise_price":7.005,"expiration_date":"2027-10-14","underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001493152-21-025655","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1819004/000149315221025655/ownership.xml","form_type":"4"}}]}