{"transactions":[{"id":857033,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-03-06T21:22:21.000Z","date":"2026-03-06","kind":"purchase","planned":false,"acquired":true,"shares":5533,"price":9.04,"value":50018.32,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes an aggregate of 10,433 shares acquired under the Issuer's 2021 Employee Stock Purchase Plan."}],"balance_after":77018,"source":{"system":"sec-edgar","filing":"0001824817-26-000006","document":"form4-03062026_090318.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/872912/000182481726000006/form4-03062026_090318.xml","form_type":"4"}},{"id":898768,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-02-19T02:30:11.000Z","date":"2026-02-17","kind":"grant","planned":false,"acquired":true,"shares":28250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents an RSU award, one-third of which shall vest on February 17, 2027 with the remaining 2/3  two-thirds of the RSUs vesting in equal annual installments over the following two years. The vesting of the RSUs is subject to the Reporting Person's continuous service through each such vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents an RSU award, one-third of which shall vest on February 17, 2027 with the remaining 2/3  two-thirds of the RSUs vesting in equal annual installments over the following two years. The vesting of the RSUs is subject to the Reporting Person's continuous service through each such vesting date."}],"balance_after":28250,"derivative":{"underlying":"Common Stock","underlying_shares":28250},"source":{"system":"sec-edgar","filing":"0001824817-26-000003","document":"form4-02182026_090207.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/872912/000182481726000003/form4-02182026_090207.xml","form_type":"4"}},{"id":898767,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-02-19T02:30:11.000Z","date":"2026-02-17","kind":"grant","planned":false,"acquired":true,"shares":56500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable at the rate of one-thirty-sixth (1/36th) per month with the first such vesting to occur on February 17, 2026 and monthly thereafter for so long as the reporting person remains an employee of Delcath Systems, Inc. (and subject to the terms and conditions of the Delcath Systems, Inc. 2020 Omnibus Equity Incentive Plan, as amended)."}],"balance_after":56500,"derivative":{"exercise_price":9.4,"expiration_date":"2036-02-17","underlying":"Common Stock","underlying_shares":56500},"source":{"system":"sec-edgar","filing":"0001824817-26-000003","document":"form4-02182026_090207.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/872912/000182481726000003/form4-02182026_090207.xml","form_type":"4"}},{"id":1279405,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2025-02-08T00:18:49.000Z","date":"2025-02-07","kind":"grant","planned":false,"acquired":true,"shares":113000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable at the rate of one-thirty-sixth (1/36th) per month with the first such vesting to occur on February 7, 2025 and monthly thereafter for so long as the reporting person remains an employee of Delcath Systems, Inc. (and subject to the terms and conditions of the Delcath Systems, Inc. 2020 Omnibus Equity Incentive Plan, as amended)."}],"balance_after":113000,"derivative":{"exercise_price":16.25,"expiration_date":"2035-02-07","underlying":"Common Stock","underlying_shares":113000},"source":{"system":"sec-edgar","filing":"0001415889-25-003408","document":"form4-02082025_120244.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/872912/000141588925003408/form4-02082025_120244.xml","form_type":"4"}},{"id":1570870,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP OF FINANCE, PFO AND PAO"}}],"security":"Common Stock","published_at":"2024-03-19T20:59:55.000Z","date":"2024-03-19","kind":"grant","planned":false,"acquired":true,"shares":26881,"price":3.72,"value":99997.32,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 4,171 shares acquired under the Issuer's 2021 Employee Stock Purchase Plan."}],"balance_after":61052,"source":{"system":"sec-edgar","filing":"0001415889-24-008582","document":"form4-03192024_080349.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/872912/000141588924008582/form4-03192024_080349.xml","form_type":"4"}},{"id":1644308,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP OF FINANCE, PFO AND PAO"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-02-14T21:44:05.000Z","date":"2024-02-12","kind":"grant","planned":false,"acquired":true,"shares":100500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable at the rate of one-thirty-sixth (1/36th) per month with the first such vesting to occur on February 12, 2024 and monthly thereafter for so long as the reporting person remains an employee of Delcath Systems, Inc. (and subject to the terms and conditions of the Delcath Systems, Inc. 2020 Omnibus Equity Incentive Plan, as amended)."}],"balance_after":100500,"derivative":{"exercise_price":4.78,"expiration_date":"2034-02-12","underlying":"Common Stock","underlying_shares":100500},"source":{"system":"sec-edgar","filing":"0001415889-24-003760","document":"form4-02142024_090251.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/872912/000141588924003760/form4-02142024_090251.xml","form_type":"4"}},{"id":1733513,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP of Finance, PFO and PAO"}}],"security":"Common Stock","published_at":"2023-11-21T12:42:49.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":30000,"price":2.43,"value":72900.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.05 to $2.45 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote."}],"balance_after":30000,"source":{"system":"sec-edgar","filing":"0001209191-23-056187","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/872912/000120919123056187/doc4.xml","form_type":"4"}},{"id":1848307,"issuer":{"id":5387,"kind":"organization","name":"DELCATH SYSTEMS, INC.","symbol":"DCTH"},"owners":[{"id":62402,"kind":"person","name":"Pennell Sandra","position":1,"cik":"0001824817","reported_name":"Pennell Sandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (Right to Buy)","published_at":"2023-06-22T01:22:19.000Z","date":"2023-06-12","kind":"grant","planned":false,"acquired":true,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"One-third (1/3rd) of the shares subject to the option shall vest on June 1, 2024, with the remaining shares vesting in equal monthly installments over the following two years thereafter, for so long as the reporting person remains an employee of Delcath Systems, Inc. The option is also subject to acceleration under certain circumstances."}],"balance_after":100000,"derivative":{"exercise_price":7.25,"expiration_date":"2033-06-12","underlying":"Common Stock","underlying_shares":100000},"source":{"system":"sec-edgar","filing":"0000899243-23-016202","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/872912/000089924323016202/doc4.xml","form_type":"4"}}]}