{"transactions":[{"id":4638052,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2026-10-08T21:06:13.000Z","date":"2026-10-06","kind":"sale","planned":true,"acquired":false,"shares":2500,"price":18.5,"value":46250.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 5, 2026."}],"balance_after":118,"source":{"system":"sec-edgar","filing":"0000897069-26-001824","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2051411/000089706926001824/form4.xml","form_type":"4"}},{"id":713139,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2026-07-08T21:52:12.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":2500,"price":28.71,"value":71775.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 5, 2026."}],"balance_after":2618,"source":{"system":"sec-edgar","filing":"0000897069-26-001496","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926001496/form4.xml","form_type":"4"}},{"id":783340,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Employee Restricted Stock Units","published_at":"2026-05-13T00:29:52.000Z","date":"2026-05-08","kind":"exercise","planned":false,"acquired":false,"shares":2020,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On May 8, 2024, the reporting person was granted restricted stock units, which vest 1/3 on each of the first three anniversaries of the date of grant, subject to continued employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On May 8, 2024, the reporting person was granted restricted stock units, which vest 1/3 on each of the first three anniversaries of the date of grant, subject to continued employment."}],"balance_after":2020,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":2020},"source":{"system":"sec-edgar","filing":"0000897069-26-001110","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926001110/form4.xml","form_type":"4"}},{"id":783339,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2026-05-13T00:29:52.000Z","date":"2026-05-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":492,"price":13.7,"value":6740.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents shares withheld to satisfy tax obligations upon the vesting of restricted stock units."}],"balance_after":5118,"source":{"system":"sec-edgar","filing":"0000897069-26-001110","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926001110/form4.xml","form_type":"4"}},{"id":783338,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2026-05-13T00:29:52.000Z","date":"2026-05-08","kind":"exercise","planned":false,"acquired":true,"shares":2020,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":5610,"source":{"system":"sec-edgar","filing":"0000897069-26-001110","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926001110/form4.xml","form_type":"4"}},{"id":803962,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2026-04-21T21:29:01.000Z","date":"2026-04-20","kind":"sale","planned":true,"acquired":false,"shares":2500,"price":8,"value":20000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 5, 2026."}],"balance_after":3590,"source":{"system":"sec-edgar","filing":"0000897069-26-000922","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926000922/form4.xml","form_type":"4"}},{"id":955815,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Employee Restricted Stock Unit","published_at":"2026-01-02T22:10:33.000Z","date":"2025-12-30","kind":"exercise","planned":false,"acquired":false,"shares":6250,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units were converted into common stock on a one-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units were converted into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On December 30, 2024, the reporting person was granted restricted stock units, which vest 1/2 on each of the first two anniversaries of the date of grant, subject to continued employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On December 30, 2024, the reporting person was granted restricted stock units, which vest 1/2 on each of the first two anniversaries of the date of grant, subject to continued employment."}],"balance_after":6250,"derivative":{"underlying":"Common Stock","underlying_shares":6250},"source":{"system":"sec-edgar","filing":"0000897069-26-000005","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926000005/form4.xml","form_type":"4"}},{"id":955814,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2026-01-02T22:10:33.000Z","date":"2025-12-30","kind":"tax_withholding","planned":false,"acquired":false,"shares":1688,"price":7.94,"value":13402.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents shares withheld to satisfy tax obligations upon the vesting of restricted stock units."}],"balance_after":6090,"source":{"system":"sec-edgar","filing":"0000897069-26-000005","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926000005/form4.xml","form_type":"4"}},{"id":955813,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2026-01-02T22:10:33.000Z","date":"2025-12-30","kind":"exercise","planned":false,"acquired":true,"shares":6250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units were converted into common stock on a one-for-one basis."}],"balance_after":7778,"source":{"system":"sec-edgar","filing":"0000897069-26-000005","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706926000005/form4.xml","form_type":"4"}},{"id":985687,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"officer":true,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Employee Performance Share Unit","published_at":"2025-12-01T22:15:26.000Z","date":"2025-11-28","kind":"grant","planned":false,"acquired":true,"shares":36137,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each performance share unit represents a contingent right to receive one share of common stock or the equivalent cash value upon vesting of the performance share unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On November 28, 2025, the reporting person was granted performance share units that will be earned based on the Company's total shareholder return (\"TSR\") performance during the fiscal year 2026, fiscal years 2026-2027 and fiscal years 2026-2028 performance periods, subject to continued employment until the third anniversary of the grant date. The number of performance share units reported is the target number; up to 235% of the target number may be earned based on TSR performance."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On November 28, 2025, the reporting person was granted performance share units that will be earned based on the Company's total shareholder return (\"TSR\") performance during the fiscal year 2026, fiscal years 2026-2027 and fiscal years 2026-2028 performance periods, subject to continued employment until the third anniversary of the grant date. The number of performance share units reported is the target number; up to 235% of the target number may be earned based on TSR performance."}],"balance_after":36137,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":36137},"source":{"system":"sec-edgar","filing":"0000897069-25-001749","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706925001749/form4.xml","form_type":"4"}},{"id":985686,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"officer":true,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Employee Restricted Stock Unit","published_at":"2025-12-01T22:15:26.000Z","date":"2025-11-28","kind":"grant","planned":false,"acquired":true,"shares":36136,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock or the equivalent cash value upon vesting of the restricted stock unit."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On November 28, 2025, the reporting person was granted restricted stock units, which vest 1/3 on each of the first, second and third anniversaries of the date of grant, subject to continued employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On November 28, 2025, the reporting person was granted restricted stock units, which vest 1/3 on each of the first, second and third anniversaries of the date of grant, subject to continued employment."}],"balance_after":36136,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":36136},"source":{"system":"sec-edgar","filing":"0000897069-25-001749","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706925001749/form4.xml","form_type":"4"}},{"id":1152896,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"officer":true,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Employee Restricted Stock Units","published_at":"2025-05-12T21:46:03.000Z","date":"2025-05-08","kind":"exercise","planned":false,"acquired":false,"shares":2020,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On May 8, 2024, the reporting person was granted restricted stock units, which vest 1/3 on each of the first three anniversaries of the date of grant, subject to continued employment."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On May 8, 2024, the reporting person was granted restricted stock units, which vest 1/3 on each of the first three anniversaries of the date of grant, subject to continued employment."}],"balance_after":4040,"derivative":{"underlying":"Common Stock","underlying_shares":2020},"source":{"system":"sec-edgar","filing":"0000897069-25-000967","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706925000967/form4.xml","form_type":"4"}},{"id":1152895,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"officer":true,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2025-05-12T21:46:03.000Z","date":"2025-05-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":492,"price":4.19,"value":2061.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents shares withheld to satisfy tax obligations upon the vesting of restricted stock units."}],"balance_after":1528,"source":{"system":"sec-edgar","filing":"0000897069-25-000967","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706925000967/form4.xml","form_type":"4"}},{"id":1152894,"issuer":{"id":4760,"kind":"organization","name":"FUELCELL ENERGY INC","symbol":"FCEL"},"owners":[{"id":31531,"kind":"person","name":"Achanta Shankar","position":1,"cik":"0002051411","reported_name":"Achanta Shankar","relationship":{"officer":true,"officer_title":"EVP, Chf. Product &Tech Ofc."}}],"security":"Common Stock","published_at":"2025-05-12T21:46:03.000Z","date":"2025-05-08","kind":"exercise","planned":false,"acquired":true,"shares":2020,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."}],"balance_after":2020,"source":{"system":"sec-edgar","filing":"0000897069-25-000967","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/886128/000089706925000967/form4.xml","form_type":"4"}}]}