{"transactions":[{"id":813882,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-04-07T21:35:45.000Z","date":"2026-04-03","kind":"grant","planned":false,"acquired":true,"shares":3116,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This award of immediately vested shares of American Superconductor Corporation (the \"Company\") common stock was made in accordance with the Company's Amended and Restated 2007 Director Stock Plan, as Amended."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following all the transactions reported on this Form 4, the reporting person holds 51,779 shares directly."}],"balance_after":51779,"source":{"system":"sec-edgar","filing":"0001193125-26-145795","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000119312526145795/ownership.xml","form_type":"4"}},{"id":1071797,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Options (Right to Buy)","published_at":"2025-08-08T20:15:14.000Z","date":"2025-08-06","kind":"exercise","planned":false,"acquired":false,"shares":9703,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The stock option was automatically granted under the Amended and Restated 2007 Director Stock Plan on the third business day following the reporting person's election to the Board.  The stock option vested in two equal annual installments beginning September 20, 2017, and became fully vested and exerciseable on September 20, 2018."}],"balance_after":0,"derivative":{"exercise_price":6.8,"expiration_date":"2026-09-20","underlying":"Common Stock","underlying_shares":9703},"source":{"system":"sec-edgar","filing":"0000950170-25-105858","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/880807/000095017025105858/ownership.xml","form_type":"4"}},{"id":1071796,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-08-08T20:15:14.000Z","date":"2025-08-08","kind":"sale","planned":false,"acquired":false,"shares":9703,"price":50.9205,"value":494081.6115,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were made by the reporting person for tax and estate planning purposes."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following all the transactions reported on this Form 4, the reporting person holds 48,663 shares directly."}],"balance_after":48663,"source":{"system":"sec-edgar","filing":"0000950170-25-105858","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/880807/000095017025105858/ownership.xml","form_type":"4"}},{"id":1071795,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP 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directly."}],"balance_after":48663,"source":{"system":"sec-edgar","filing":"0000950170-25-051183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000095017025051183/ownership.xml","form_type":"4"}},{"id":1548160,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-04-04T21:24:27.000Z","date":"2024-04-03","kind":"grant","planned":false,"acquired":true,"shares":3840,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This award of immediately vested shares of American Superconductor Corporation (the \"Company\") common stock was made in accordance with the Company's Amended and Restated 2007 Director Stock Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following all the transactions reported on this Form 4, the reporting person holds 46,024 shares directly."}],"balance_after":46024,"source":{"system":"sec-edgar","filing":"0000950170-24-041905","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000095017024041905/ownership.xml","form_type":"4"}},{"id":1923275,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-07T20:17:53.000Z","date":"2023-04-05","kind":"grant","planned":false,"acquired":true,"shares":11627,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This award of immediately vested shares of American Superconductor Corporation (the \"Company\") common stock was made in accordance with the Company's Amended and Restated 2007 Director Stock Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following all the transactions reported on this Form 4, the reporting person holds 42,184 shares directly."}],"balance_after":42184,"source":{"system":"sec-edgar","filing":"0001209191-23-023781","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000120919123023781/doc4.xml","form_type":"4"}},{"id":2302983,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-04-06T21:36:51.000Z","date":"2022-04-05","kind":"grant","acquired":true,"shares":6067,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This award of immediately vested shares of American Superconductor Corporation (the \"Company\") 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directly."}],"balance_after":24490,"source":{"system":"sec-edgar","filing":"0001209191-21-025803","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000120919121025803/doc4.xml","form_type":"4"}},{"id":3181079,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-04-07T19:35:03.000Z","date":"2020-04-03","kind":"grant","acquired":true,"shares":7092,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This award of immediately vested shares of American Superconductor Corporation (the \"Company\") 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Stock","published_at":"2019-04-04T20:59:34.000Z","date":"2019-04-03","kind":"grant","acquired":true,"shares":3152,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This award of immediately vested shares of AMSC stock was made in accordance with the 2007 Director Stock Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following all the transactions reported on this Form 4, the reporting person holds 15,325 shares directly."}],"balance_after":15325,"source":{"system":"sec-edgar","filing":"0001209191-19-023672","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000120919119023672/doc4.xml","form_type":"4"}},{"id":3968002,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP 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directly."}],"balance_after":12173,"source":{"system":"sec-edgar","filing":"0001209191-18-024169","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000120919118024169/doc4.xml","form_type":"4"}},{"id":4356665,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-04-07T20:37:44.000Z","date":"2017-04-05","kind":"grant","acquired":true,"shares":3277,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This grant was made in accordance with the 2007 Director Stock Plan"},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following all the transactions reported on this Form 4, the reporting person holds 5,277 shares directly."}],"balance_after":5277,"source":{"system":"sec-edgar","filing":"0001209191-17-026272","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/880807/000120919117026272/doc4.xml","form_type":"4"}},{"id":4597520,"issuer":{"id":4752,"kind":"organization","name":"AMERICAN SUPERCONDUCTOR CORP /DE/","symbol":"AMSC"},"owners":[{"id":53507,"kind":"person","name":"House Arthur H","position":1,"cik":"0001685155","reported_name":"House Arthur H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Options (Right to 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