{"transactions":[{"id":1267825,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Fin. & Admin Officer"}}],"security":"Common Stock","published_at":"2025-02-14T21:37:57.000Z","date":"2025-02-12","kind":"tax_withholding","planned":false,"acquired":false,"shares":3326,"price":5.59,"value":18592.34,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the number of shares of common stock automatically forfeited by the reporting person pursuant to the terms of the awards to cover withholding taxes due as a result of the settlement of the PSU awards."}],"balance_after":95884,"source":{"system":"sec-edgar","filing":"0001062993-25-002553","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299325002553/form4.xml","form_type":"4"}},{"id":1267824,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Fin. & Admin Officer"}}],"security":"Common Stock","published_at":"2025-02-14T21:37:57.000Z","date":"2025-02-12","kind":"grant","planned":false,"acquired":true,"shares":7500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Enanta common stock issued under performance share units (\"PSUs\") that vested as a result of performance against two-year research and development milestones in the calendar 2023-2024 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2025."}],"balance_after":99210,"source":{"system":"sec-edgar","filing":"0001062993-25-002553","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299325002553/form4.xml","form_type":"4"}},{"id":1337524,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Fin. & Admin Officer"}}],"security":"Common Stock","published_at":"2024-12-10T21:58:02.000Z","date":"2024-12-06","kind":"sale","planned":true,"acquired":false,"shares":2591,"price":8.06,"value":20883.46,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 23, 2022, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $7.87 to $8.22, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth set forth in this footnote of this Form 4."}],"balance_after":91710,"source":{"system":"sec-edgar","filing":"0001062993-24-020378","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299324020378/form4.xml","form_type":"4"}},{"id":1345550,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Fin. & Admin Officer"}}],"security":"Common Stock","published_at":"2024-12-03T23:32:11.000Z","date":"2024-12-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1595,"price":8.6,"value":13717.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit awards granted on November 20, 2020 and November 19, 2021."}],"balance_after":94301,"source":{"system":"sec-edgar","filing":"0001062993-24-019980","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299324019980/form4.xml","form_type":"4"}},{"id":1349790,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Fin. & Admin Officer"}}],"security":"Stock Option (right to buy)","published_at":"2024-11-27T22:01:49.000Z","date":"2024-11-27","kind":"grant","planned":false,"acquired":true,"shares":81000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 27, 2024)."}],"balance_after":81000,"derivative":{"exercise_price":8.83,"expiration_date":"2034-11-27","underlying":"Common Stock","underlying_shares":81000},"source":{"system":"sec-edgar","filing":"0001062993-24-019766","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299324019766/form4.xml","form_type":"4"}},{"id":1643623,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Fin. & Admin Officer"}}],"security":"Common Stock","published_at":"2024-02-15T01:09:35.000Z","date":"2024-02-12","kind":"tax_withholding","planned":false,"acquired":false,"shares":973,"price":12.41,"value":12074.93,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU awards."}],"balance_after":95896,"source":{"system":"sec-edgar","filing":"0001062993-24-003226","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299324003226/form4.xml","form_type":"4"}},{"id":1643622,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Fin. & Admin Officer"}}],"security":"Common Stock","published_at":"2024-02-15T01:09:35.000Z","date":"2024-02-12","kind":"grant","planned":false,"acquired":true,"shares":3320,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Enanta common stock issued under performance share units (\"PSUs\") that vested as a result of performance against two-year research and development milestones in the calendar 2022-2023 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2024."}],"balance_after":96869,"source":{"system":"sec-edgar","filing":"0001062993-24-003226","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299324003226/form4.xml","form_type":"4"}},{"id":1720293,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP, Finance & Admin. & CFO"}}],"security":"Common Stock","published_at":"2023-12-07T01:19:37.000Z","date":"2023-12-05","kind":"sale","planned":false,"acquired":false,"shares":2412,"price":9.63,"value":23227.56,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 23, 2022, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $9.49 to $9.63, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth set forth in this footnote of this Form 4."}],"balance_after":93549,"source":{"system":"sec-edgar","filing":"0001062993-23-022047","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323022047/form4.xml","form_type":"4"}},{"id":1722247,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP, Finance & Admin. & CFO"}}],"security":"Common Stock","published_at":"2023-12-06T02:11:44.000Z","date":"2023-12-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1595,"price":9.49,"value":15136.55,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit awards granted on November 20, 2020 and November 19, 2021."}],"balance_after":95961,"source":{"system":"sec-edgar","filing":"0001062993-23-021983","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323021983/form4.xml","form_type":"4"}},{"id":1731557,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP, Finance & Admin. & CFO"}}],"security":"Stock Option (right to buy)","published_at":"2023-11-22T22:12:00.000Z","date":"2023-11-22","kind":"grant","planned":false,"acquired":true,"shares":83000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 22, 2023)."}],"balance_after":83000,"derivative":{"exercise_price":8.99,"expiration_date":"2033-11-22","underlying":"Common Stock","underlying_shares":83000},"source":{"system":"sec-edgar","filing":"0001062993-23-021383","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323021383/form4.xml","form_type":"4"}},{"id":1947711,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (Right to Buy)","published_at":"2023-03-17T22:41:12.000Z","date":"2023-03-15","kind":"exercise","acquired":false,"shares":10440,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 21, 2013, the reporting person was granted an option to purchase 41,763 shares of common stock, half of which became exercisable upon the achievement of several clinical milestones during the four-year performance period after the date of grant."}],"balance_after":0,"derivative":{"exercise_price":14,"expiration_date":"2023-03-21","underlying":"Common Stock","underlying_shares":10440},"source":{"system":"sec-edgar","filing":"0001062993-23-007223","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323007223/form4.xml","form_type":"4"}},{"id":1947710,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-03-17T22:41:12.000Z","date":"2023-03-15","kind":"sale","acquired":false,"shares":10340,"price":44.43,"value":459406.2,"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 in December 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $44.01 to $45.00, inclusive."}],"balance_after":97556,"source":{"system":"sec-edgar","filing":"0001062993-23-007223","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323007223/form4.xml","form_type":"4"}},{"id":1947709,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-03-17T22:41:12.000Z","date":"2023-03-15","kind":"sale","acquired":false,"shares":100,"price":43.96,"value":4396.0,"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 in December 2022."}],"balance_after":107896,"source":{"system":"sec-edgar","filing":"0001062993-23-007223","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323007223/form4.xml","form_type":"4"}},{"id":1947708,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-03-17T22:41:12.000Z","date":"2023-03-15","kind":"exercise","acquired":true,"shares":10440,"price":14,"value":146160.0,"ownership":{"direct":true},"balance_after":107996,"source":{"system":"sec-edgar","filing":"0001062993-23-007223","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323007223/form4.xml","form_type":"4"}},{"id":2013846,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-02-16T02:44:34.000Z","date":"2023-02-13","kind":"tax_withholding","acquired":false,"shares":6904,"price":52.77,"value":364324.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards."}],"balance_after":97556,"source":{"system":"sec-edgar","filing":"0001062993-23-003713","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323003713/form4.xml","form_type":"4"}},{"id":2013845,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-02-16T02:44:34.000Z","date":"2023-02-13","kind":"grant","acquired":true,"shares":11747,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of Enanta common stock issued under a relative total stockholder return unit (\"rTSRU\") award granted to the reporting person on December 18, 2020 that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over a two-year period. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 13, 2023."}],"balance_after":104460,"source":{"system":"sec-edgar","filing":"0001062993-23-003713","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323003713/form4.xml","form_type":"4"}},{"id":2013844,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-02-16T02:44:34.000Z","date":"2023-02-13","kind":"grant","acquired":true,"shares":9250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Enanta common stock issued under a performance share unit (\"PSU\") award granted on December 18, 2020 that vested as a result of the achievement of a research and development milestone in calendar 2022 as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 13, 2023."}],"balance_after":92713,"source":{"system":"sec-edgar","filing":"0001062993-23-003713","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323003713/form4.xml","form_type":"4"}},{"id":2020284,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-02-14T00:58:05.000Z","date":"2023-02-09","kind":"sale","acquired":false,"shares":800,"price":54.41,"value":43528.0,"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 in December 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $54.09 to $54.85, inclusive."}],"balance_after":83463,"source":{"system":"sec-edgar","filing":"0001062993-23-002936","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323002936/form4.xml","form_type":"4"}},{"id":2020283,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-02-14T00:58:05.000Z","date":"2023-02-09","kind":"sale","acquired":false,"shares":4200,"price":53.64,"value":225288.0,"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 in December 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $53.09 to $54.05, inclusive."}],"balance_after":84263,"source":{"system":"sec-edgar","filing":"0001062993-23-002936","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323002936/form4.xml","form_type":"4"}},{"id":2057856,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (Right to Buy)","published_at":"2023-01-11T00:11:57.000Z","date":"2023-01-09","kind":"exercise","acquired":false,"shares":2812,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":14.18,"expiration_date":"2023-01-17","underlying":"Common Stock","underlying_shares":2812},"source":{"system":"sec-edgar","filing":"0001062993-23-000800","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323000800/form4.xml","form_type":"4"}},{"id":2057855,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2023-01-11T00:11:57.000Z","date":"2023-01-09","kind":"exercise","acquired":true,"shares":2812,"price":14.18,"value":39874.16,"ownership":{"direct":true},"balance_after":88463,"source":{"system":"sec-edgar","filing":"0001062993-23-000800","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299323000800/form4.xml","form_type":"4"}},{"id":2082150,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-12-20T00:53:53.000Z","date":"2022-12-19","kind":"exercise","acquired":false,"shares":4148,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":14.18,"expiration_date":"2022-12-26","underlying":"Common Stock","underlying_shares":4148},"source":{"system":"sec-edgar","filing":"0001062993-22-024175","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322024175/form4.xml","form_type":"4"}},{"id":2082149,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2022-12-20T00:53:53.000Z","date":"2022-12-19","kind":"exercise","acquired":true,"shares":4148,"price":14.18,"value":58818.64,"ownership":{"direct":true},"balance_after":85651,"source":{"system":"sec-edgar","filing":"0001062993-22-024175","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322024175/form4.xml","form_type":"4"}},{"id":2096568,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2022-12-06T00:20:08.000Z","date":"2022-12-01","kind":"tax_withholding","acquired":false,"shares":1055,"price":44.33,"value":46768.15,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit awards granted on November 20, 2020 and November 19, 2021."}],"balance_after":81503,"source":{"system":"sec-edgar","filing":"0001062993-22-023361","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322023361/form4.xml","form_type":"4"}},{"id":2103525,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2022-11-28T23:20:23.000Z","date":"2022-11-23","kind":"grant","acquired":true,"shares":45000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 23, 2022)."}],"balance_after":45000,"derivative":{"exercise_price":45,"expiration_date":"2032-11-23","underlying":"Common Stock","underlying_shares":45000},"source":{"system":"sec-edgar","filing":"0001062993-22-022841","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322022841/form4.xml","form_type":"4"}},{"id":2103524,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2022-11-28T23:20:23.000Z","date":"2022-11-23","kind":"grant","acquired":true,"shares":21000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a grant of restricted stock units (\"RSUs\") under the Enanta Pharmaceuticals, Inc. (\"Enanta\") 2019 Equity Incentive Plan. Each RSU represents the contingent right to receive, upon vesting of the unit, one share of Enanta common stock. The RSUs will vest and settle with respect to 25% of the award on December 4, 2023 and in substantially equal annual installments over the next three anniversaries thereafter."}],"balance_after":82558,"source":{"system":"sec-edgar","filing":"0001062993-22-022841","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322022841/form4.xml","form_type":"4"}},{"id":2225821,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2022-06-21T20:01:24.000Z","date":"2022-06-17","kind":"exercise","acquired":false,"shares":3480,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":11.77,"expiration_date":"2022-06-20","underlying":"Common Stock","underlying_shares":3480},"source":{"system":"sec-edgar","filing":"0001062993-22-015258","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322015258/form4.xml","form_type":"4"}},{"id":2225820,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2022-06-21T20:01:24.000Z","date":"2022-06-17","kind":"exercise","acquired":true,"shares":3480,"price":11.77,"value":40959.6,"ownership":{"direct":true},"balance_after":61558,"source":{"system":"sec-edgar","filing":"0001062993-22-015258","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322015258/form4.xml","form_type":"4"}},{"id":2394830,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2022-02-16T02:36:44.000Z","date":"2022-02-14","kind":"tax_withholding","acquired":false,"shares":958,"price":62.49,"value":59865.42,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards."}],"balance_after":58078,"source":{"system":"sec-edgar","filing":"0001062993-22-004512","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322004512/form4.xml","form_type":"4"}},{"id":2394829,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2022-02-16T02:36:44.000Z","date":"2022-02-14","kind":"grant","acquired":true,"shares":2419,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of Enanta common stock issued under a relative total stockholder return unit (\"rTSRU\") award granted to the reporting person on December 20, 2019 that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over a two-year period. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 14, 2022."}],"balance_after":59036,"source":{"system":"sec-edgar","filing":"0001062993-22-004512","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322004512/form4.xml","form_type":"4"}},{"id":2394828,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2022-02-16T02:36:44.000Z","date":"2022-02-14","kind":"grant","acquired":true,"shares":615,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Enanta common stock issued under a performance share unit (\"PSU\") award granted on December 20, 2019 that vested as a result of the achievement of a research and development milestone in calendar 2021 as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 14, 2022."}],"balance_after":56617,"source":{"system":"sec-edgar","filing":"0001062993-22-004512","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299322004512/form4.xml","form_type":"4"}},{"id":2486487,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2021-12-03T23:38:30.000Z","date":"2021-12-01","kind":"tax_withholding","acquired":false,"shares":557,"price":87.68,"value":48837.76,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 20, 2020."}],"balance_after":56002,"source":{"system":"sec-edgar","filing":"0001062993-21-012199","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299321012199/form4.xml","form_type":"4"}},{"id":2498907,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2021-11-24T00:31:30.000Z","date":"2021-11-19","kind":"grant","acquired":true,"shares":28400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 19, 2021)."}],"balance_after":28400,"derivative":{"exercise_price":75.33,"expiration_date":"2031-11-19","underlying":"Common Stock","underlying_shares":28400},"source":{"system":"sec-edgar","filing":"0001062993-21-011500","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299321011500/form4.xml","form_type":"4"}},{"id":2498906,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2021-11-24T00:31:30.000Z","date":"2021-11-19","kind":"grant","acquired":true,"shares":6800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a grant of restricted stock units (\"RSUs\") under the Enanta Pharmaceuticals, Inc. (\"Enanta\") 2019 Equity Incentive Plan. Each RSU represents the contingent right to receive, upon vesting of the unit, one share of Enanta common stock. The RSUs vest in equal annual installments over four years from the date of grant (November 19, 2021). The restricted stock unit shares that vest will be issued on the first December 1 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of securities beneficially owned by the reporting person was incorrectly stated on the Form 4 filed on January 8, 2021 as \"61,759\" instead of \"49,759.\" The amount of securities beneficially owned, as reported in column 5 of this Form 4, corrects this error."}],"balance_after":56559,"source":{"system":"sec-edgar","filing":"0001062993-21-011500","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000106299321011500/form4.xml","form_type":"4"}},{"id":2912431,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2021-01-09T01:57:13.000Z","date":"2021-01-08","kind":"sale","acquired":false,"shares":6000,"price":45.5771,"value":273462.6,"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 in December 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.865, inclusive."}],"balance_after":61759,"source":{"system":"sec-edgar","filing":"0001177648-21-000002","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764821000002/edgar.xml","form_type":"4"}},{"id":2942912,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Restricted Stock Units","published_at":"2020-12-16T23:43:32.000Z","date":"2020-12-15","kind":"exercise","acquired":false,"shares":2625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into ENTA common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 of the restricted stock units were transferred to the reporting person's ex-wife pursuant to a domestic relations order and the reporting person no longer reports as beneficially owned any securities owned by his ex-wife. 2,625 restricted stock units have previously vested and the remainder vested on November 18, 2020."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 of the restricted stock units were transferred to the reporting person's ex-wife pursuant to a domestic relations order and the reporting person no longer reports as beneficially owned any securities owned by his ex-wife. 2,625 restricted stock units have previously vested and the remainder vested on November 18, 2020."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2625},"source":{"system":"sec-edgar","filing":"0001177648-20-000057","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000057/edgar.xml","form_type":"4"}},{"id":2942911,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-12-16T23:43:32.000Z","date":"2020-12-15","kind":"tax_withholding","acquired":false,"shares":770,"price":42.52,"value":32740.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of the restricted stock unit award."}],"balance_after":55759,"source":{"system":"sec-edgar","filing":"0001177648-20-000057","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000057/edgar.xml","form_type":"4"}},{"id":2942910,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-12-16T23:43:32.000Z","date":"2020-12-15","kind":"exercise","acquired":true,"shares":2625,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of ENTA common stock subject to a restricted stock unit award granted on November 18, 2016 that vested on November 18, 2020.  The settlement and issuance of the shares was subject to continued employment and occurred on December 15, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted stock units convert into ENTA common stock on a one-for-one basis."}],"balance_after":56529,"source":{"system":"sec-edgar","filing":"0001177648-20-000057","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000057/edgar.xml","form_type":"4"}},{"id":2971514,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2020-11-21T01:25:48.000Z","date":"2020-11-20","kind":"grant","acquired":true,"shares":30800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 20, 2020)."}],"balance_after":30800,"derivative":{"exercise_price":43.57,"expiration_date":"2030-11-20","underlying":"Common Stock","underlying_shares":30800},"source":{"system":"sec-edgar","filing":"0001177648-20-000037","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000037/edgar.xml","form_type":"4"}},{"id":2971513,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-11-21T01:25:48.000Z","date":"2020-11-20","kind":"grant","acquired":true,"shares":7600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a grant of restricted stock units (\"RSUs\") under the Enanta Pharmaceuticals, Inc. (\"Enanta\") 2019 Equity Incentive Plan. Each RSU represents the contingent right to receive, upon vesting of the unit, one share of Enanta common stock. The RSUs vest in equal annual installments over four years from the date of grant (November 20, 2020). The restricted stock unit shares that vest will be issued on the first December 1 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements."}],"balance_after":53904,"source":{"system":"sec-edgar","filing":"0001177648-20-000037","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000037/edgar.xml","form_type":"4"}},{"id":2984152,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2020-11-12T21:12:06.000Z","date":"2020-11-11","kind":"exercise","acquired":false,"shares":3480,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":2.5429,"expiration_date":"2021-04-15","underlying":"Common Stock","underlying_shares":3480},"source":{"system":"sec-edgar","filing":"0001177648-20-000033","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000033/edgar.xml","form_type":"4"}},{"id":2984151,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-11-12T21:12:06.000Z","date":"2020-11-11","kind":"exercise","acquired":true,"shares":3480,"price":2.5429,"value":8849.292,"ownership":{"direct":true},"balance_after":46304,"source":{"system":"sec-edgar","filing":"0001177648-20-000033","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000033/edgar.xml","form_type":"4"}},{"id":3158364,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2020-05-07T21:35:39.000Z","date":"2020-05-05","kind":"exercise","acquired":false,"shares":1740,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person transferred one half of all options held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse."}],"balance_after":0,"derivative":{"exercise_price":1.2068,"expiration_date":"2020-05-25","underlying":"Common Stock","underlying_shares":1740},"source":{"system":"sec-edgar","filing":"0001177648-20-000024","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000024/edgar.xml","form_type":"4"}},{"id":3158363,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-05-07T21:35:39.000Z","date":"2020-05-05","kind":"exercise","acquired":true,"shares":1740,"price":1.2068,"value":2099.832,"ownership":{"direct":true},"balance_after":42824,"source":{"system":"sec-edgar","filing":"0001177648-20-000024","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000024/edgar.xml","form_type":"4"}},{"id":3267210,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-02-18T11:04:35.000Z","date":"2020-02-12","kind":"tax_withholding","acquired":false,"shares":545,"price":52.76,"value":28754.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The reporting person transferred one half of all PSU awards and rTSRU awards held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse."}],"balance_after":41084,"source":{"system":"sec-edgar","filing":"0001177648-20-000007","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000007/edgar.xml","form_type":"4"}},{"id":3267209,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-02-18T11:04:35.000Z","date":"2020-02-12","kind":"grant","acquired":true,"shares":1350,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of Enanta common stock issued under a relative total stockholder return unit (\"rTSRU\") award granted to the reporting person on March 1, 2018 that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over a two-year period. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The reporting person transferred one half of all PSU awards and rTSRU awards held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse."}],"balance_after":41629,"source":{"system":"sec-edgar","filing":"0001177648-20-000007","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000007/edgar.xml","form_type":"4"}},{"id":3267208,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-02-18T11:04:35.000Z","date":"2020-02-12","kind":"grant","acquired":true,"shares":225,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Enanta common stock issued under a performance share unit (\"PSU\") award granted on March 1, 2018 that vested as a result of the achievement of a research and development milestone in calendar 2019 as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The reporting person transferred one half of all PSU awards and rTSRU awards held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse."}],"balance_after":40279,"source":{"system":"sec-edgar","filing":"0001177648-20-000007","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000007/edgar.xml","form_type":"4"}},{"id":3318765,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Restricted Stock Units","published_at":"2020-01-06T23:17:50.000Z","date":"2019-12-16","kind":"exercise","acquired":false,"shares":2625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into ENTA common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 restricted stock units vested on November 18, 2019 and the remainder will vest on November 18, 2020, subject to the reporting person's continued employment.  As noted in footnote 3 above, 5,250 of the restricted stock units were transferred to the reporting person's ex-wife pursuant to a domestic relations order and the reporting person no longer reports as beneficially owned any securities owned by his ex-wife."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F8","text":"On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 restricted stock units vested on November 18, 2019 and the remainder will vest on November 18, 2020, subject to the reporting person's continued employment.  As noted in footnote 3 above, 5,250 of the restricted stock units were transferred to the reporting person's ex-wife pursuant to a domestic relations order and the reporting person no longer reports as beneficially owned any securities owned by his ex-wife."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F8","text":"On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 restricted stock units vested on November 18, 2019 and the remainder will vest on November 18, 2020, subject to the reporting person's continued employment.  As noted in footnote 3 above, 5,250 of the restricted stock units were transferred to the reporting person's ex-wife pursuant to a domestic relations order and the reporting person no longer reports as beneficially owned any securities owned by his ex-wife."}],"balance_after":2625,"derivative":{"underlying":"Common Stock","underlying_shares":2625},"source":{"system":"sec-edgar","filing":"0001177648-20-000001","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000001/edgar.xml","form_type":"4"}},{"id":3318764,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-01-06T23:17:50.000Z","date":"2020-01-02","kind":"sale","acquired":false,"shares":721,"price":61.6619,"value":44458.2299,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in November 2019."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $60.40 to $62.09, inclusive."}],"balance_after":40054,"source":{"system":"sec-edgar","filing":"0001177648-20-000001","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000001/edgar.xml","form_type":"4"}},{"id":3318763,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-01-06T23:17:50.000Z","date":"2020-01-02","kind":"sale","acquired":false,"shares":9279,"price":60.8192,"value":564341.3568,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in November 2019."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $60.39 to $61.31, inclusive."}],"balance_after":40775,"source":{"system":"sec-edgar","filing":"0001177648-20-000001","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000001/edgar.xml","form_type":"4"}},{"id":3318762,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-01-06T23:17:50.000Z","date":"2019-12-16","kind":"tax_withholding","acquired":false,"shares":1165,"price":63.88,"value":74420.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of the restricted stock unit award."}],"balance_after":50054,"source":{"system":"sec-edgar","filing":"0001177648-20-000001","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000001/edgar.xml","form_type":"4"}},{"id":3318761,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2020-01-06T23:17:50.000Z","date":"2019-12-16","kind":"exercise","acquired":true,"shares":2625,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of ENTA common stock subject to a restricted stock unit award granted on November 18, 2016 that vested on November 18, 2019.  The settlement and issuance of the shares was subject to continued employment and occurred on December 16, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted stock units convert into ENTA common stock on a one-for-one basis."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Since the date of the reporting person's last ownership report, he transferred 48,594 shares of ENTA common stock and 5,250 restricted stock units (which convert into ENTA common stock on a one-for-one basis) to his ex-wife pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his ex-wife."}],"balance_after":51219,"source":{"system":"sec-edgar","filing":"0001177648-20-000001","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764820000001/edgar.xml","form_type":"4"}},{"id":3368624,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2019-11-18T23:47:24.000Z","date":"2019-11-18","kind":"grant","acquired":true,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 18, 2019)."}],"balance_after":30000,"derivative":{"exercise_price":63.35,"expiration_date":"2029-11-18","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001177648-19-000039","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764819000039/edgar.xml","form_type":"4"}},{"id":3636171,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2019-02-25T21:18:26.000Z","date":"2019-02-13","kind":"exercise","acquired":false,"shares":6960,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":1.5085,"expiration_date":"2019-03-05","underlying":"Common Stock","underlying_shares":6960},"source":{"system":"sec-edgar","filing":"0001177648-19-000018","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764819000018/edgar.xml","form_type":"4"}},{"id":3636170,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2019-02-25T21:18:26.000Z","date":"2019-02-13","kind":"exercise","acquired":true,"shares":6960,"price":1.5085,"value":10499.16,"ownership":{"direct":true},"balance_after":97188,"source":{"system":"sec-edgar","filing":"0001177648-19-000018","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764819000018/edgar.xml","form_type":"4"}},{"id":3660702,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2019-02-14T02:21:11.000Z","date":"2019-02-12","kind":"tax_withholding","acquired":false,"shares":4890,"price":88.88,"value":434623.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards."}],"balance_after":90228,"source":{"system":"sec-edgar","filing":"0001177648-19-000011","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764819000011/edgar.xml","form_type":"4"}},{"id":3660701,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2019-02-14T02:21:11.000Z","date":"2019-02-12","kind":"grant","acquired":true,"shares":10500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of Enanta common stock issued under a relative total stockholder return unit (\"rTSRU\") award granted to the reporting person on January 4, 2017 that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over a two-year period. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2019."}],"balance_after":95118,"source":{"system":"sec-edgar","filing":"0001177648-19-000011","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764819000011/edgar.xml","form_type":"4"}},{"id":3660700,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2019-02-14T02:21:11.000Z","date":"2019-02-12","kind":"grant","acquired":true,"shares":4200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Enanta common stock issued under a performance share unit (\"PSU\") award granted on January 4, 2017 that vested as a result of the achievement of a clinical development milestone in calendar 2018 as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2019."}],"balance_after":84618,"source":{"system":"sec-edgar","filing":"0001177648-19-000011","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764819000011/edgar.xml","form_type":"4"}},{"id":3756824,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2018-11-21T01:13:21.000Z","date":"2018-11-16","kind":"grant","acquired":true,"shares":19000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 16, 2018)."}],"balance_after":19000,"derivative":{"exercise_price":81.2,"expiration_date":"2028-11-16","underlying":"Common Stock","underlying_shares":19000},"source":{"system":"sec-edgar","filing":"0001177648-18-000046","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000046/edgar.xml","form_type":"4"}},{"id":3887258,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2018-06-20T20:22:20.000Z","date":"2018-06-18","kind":"exercise","acquired":false,"shares":6960,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":1.9826,"expiration_date":"2018-07-11","underlying":"Common Stock","underlying_shares":6960},"source":{"system":"sec-edgar","filing":"0001177648-18-000029","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000029/edgar.xml","form_type":"4"}},{"id":3887257,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-06-20T20:22:20.000Z","date":"2018-06-18","kind":"exercise","acquired":true,"shares":6960,"price":1.9826,"value":13798.896,"ownership":{"direct":true},"balance_after":80418,"source":{"system":"sec-edgar","filing":"0001177648-18-000029","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000029/edgar.xml","form_type":"4"}},{"id":3897054,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-06-12T21:32:02.000Z","date":"2018-06-11","kind":"sale","acquired":false,"shares":611,"price":122.1733,"value":74647.8863,"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 in May 2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $121.995 to $122.39, inclusive."}],"balance_after":73458,"source":{"system":"sec-edgar","filing":"0001177648-18-000027","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000027/edgar.xml","form_type":"4"}},{"id":3897053,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-06-12T21:32:02.000Z","date":"2018-06-11","kind":"sale","acquired":false,"shares":5153,"price":121.4163,"value":625658.1939,"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 in May 2018."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $120.95 to $121.90, inclusive."}],"balance_after":74069,"source":{"system":"sec-edgar","filing":"0001177648-18-000027","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000027/edgar.xml","form_type":"4"}},{"id":3897052,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-06-12T21:32:02.000Z","date":"2018-06-11","kind":"sale","acquired":false,"shares":6336,"price":120.3686,"value":762655.4496,"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 in May 2018."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $119.925 to $120.83, inclusive."}],"balance_after":79222,"source":{"system":"sec-edgar","filing":"0001177648-18-000027","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000027/edgar.xml","form_type":"4"}},{"id":3897051,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-06-12T21:32:02.000Z","date":"2018-06-11","kind":"sale","acquired":false,"shares":2600,"price":119.3479,"value":310304.54,"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 in May 2018."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $118.92 to $119.89, inclusive."}],"balance_after":85558,"source":{"system":"sec-edgar","filing":"0001177648-18-000027","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000027/edgar.xml","form_type":"4"}},{"id":3897050,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-06-12T21:32:02.000Z","date":"2018-06-11","kind":"sale","acquired":false,"shares":300,"price":117.5233,"value":35256.99,"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 in May 2018."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $117.51 to $117.55, inclusive."}],"balance_after":88158,"source":{"system":"sec-edgar","filing":"0001177648-18-000027","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000027/edgar.xml","form_type":"4"}},{"id":3987793,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-03-20T22:39:17.000Z","date":"2018-03-19","kind":"sale","acquired":false,"shares":200,"price":87.935,"value":17587.0,"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 in February 2018."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $87.87 to $88.00, inclusive."}],"balance_after":88458,"source":{"system":"sec-edgar","filing":"0001177648-18-000020","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000020/edgar.xml","form_type":"4"}},{"id":3987792,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-03-20T22:39:17.000Z","date":"2018-03-19","kind":"sale","acquired":false,"shares":3900,"price":87.2528,"value":340285.92,"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 in February 2018."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $86.80 to $87.78, inclusive."}],"balance_after":88658,"source":{"system":"sec-edgar","filing":"0001177648-18-000020","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000020/edgar.xml","form_type":"4"}},{"id":3987791,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-03-20T22:39:17.000Z","date":"2018-03-19","kind":"sale","acquired":false,"shares":3900,"price":86.0031,"value":335412.09,"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 in February 2018."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $85.65 to $86.57, inclusive."}],"balance_after":92558,"source":{"system":"sec-edgar","filing":"0001177648-18-000020","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000020/edgar.xml","form_type":"4"}},{"id":3987790,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-03-20T22:39:17.000Z","date":"2018-03-19","kind":"sale","acquired":false,"shares":1000,"price":85.0455,"value":85045.5,"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 in February 2018."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $84.53 to $85.43, inclusive."}],"balance_after":96458,"source":{"system":"sec-edgar","filing":"0001177648-18-000020","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000020/edgar.xml","form_type":"4"}},{"id":4063083,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-02-13T23:27:12.000Z","date":"2018-02-12","kind":"tax_withholding","acquired":false,"shares":2367,"price":76.845,"value":181892.115,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards."}],"balance_after":97458,"source":{"system":"sec-edgar","filing":"0001177648-18-000004","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000004/edgar.xml","form_type":"4"}},{"id":4063082,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-02-13T23:27:12.000Z","date":"2018-02-12","kind":"grant","acquired":true,"shares":5546,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of Enanta common stock issued under a relative total stockholder return unit (\"rTSRU\") award granted to the reporting person on December 21, 2015 that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over a two-year period. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2018."}],"balance_after":99825,"source":{"system":"sec-edgar","filing":"0001177648-18-000004","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000004/edgar.xml","form_type":"4"}},{"id":4063081,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2018-02-13T23:27:12.000Z","date":"2018-02-12","kind":"grant","acquired":true,"shares":2300,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Enanta common stock issued under a performance share unit (\"PSU\") award granted on December 21, 2015 that vested as a result of the achievement of a clinical development milestone in calendar 2018 as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2018."}],"balance_after":94279,"source":{"system":"sec-edgar","filing":"0001177648-18-000004","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764818000004/edgar.xml","form_type":"4"}},{"id":4154521,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2017-11-22T00:58:13.000Z","date":"2017-11-17","kind":"grant","acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 17, 2017)."}],"balance_after":22500,"derivative":{"exercise_price":48.52,"expiration_date":"2027-11-17","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0001177648-17-000040","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764817000040/edgar.xml","form_type":"4"}},{"id":4352053,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2017-04-14T20:13:54.000Z","date":"2017-04-12","kind":"grant","acquired":true,"shares":6963,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On March 20, 2013, the reporting person was granted an option to purchase 41,763 shares of common stock, which becomes reportable on Form 4 only if and to the extent that the option becomes exercisable.  The option becomes exercisable in up to nine installments, based on Enanta's achievement of certain clinical milestones with respect to three or more programs that progress in clinical development. This report reflects the additional shares that became exercisable upon achievement of two of the milestones.  As of the date of this filing, a total of 50% of the shares subject to the option have become exercisable."}],"balance_after":6963,"derivative":{"exercise_price":14,"exercise_date":"2017-04-12","expiration_date":"2023-03-20","underlying":"Common Stock","underlying_shares":6963},"source":{"system":"sec-edgar","filing":"0001177648-17-000025","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764817000025/edgar.xml","form_type":"4"}},{"id":4353612,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2017-04-12T20:13:30.000Z","date":"2017-04-11","kind":"exercise","acquired":false,"shares":29274,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":2.9739,"expiration_date":"2017-07-12","underlying":"Common Stock","underlying_shares":29274},"source":{"system":"sec-edgar","filing":"0001177648-17-000022","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764817000022/edgar.xml","form_type":"4"}},{"id":4353611,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2017-04-12T20:13:30.000Z","date":"2017-04-11","kind":"exercise","acquired":true,"shares":29274,"price":2.9739,"value":87057.9486,"ownership":{"direct":true},"balance_after":91979,"source":{"system":"sec-edgar","filing":"0001177648-17-000022","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764817000022/edgar.xml","form_type":"4"}},{"id":4445932,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2017-02-15T22:44:27.000Z","date":"2017-02-13","kind":"tax_withholding","acquired":false,"shares":981,"price":29.815,"value":29248.515,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the number of shares of common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU award."}],"balance_after":62705,"source":{"system":"sec-edgar","filing":"0001177648-17-000007","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764817000007/edgar.xml","form_type":"4"}},{"id":4445931,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2017-02-15T22:44:27.000Z","date":"2017-02-13","kind":"grant","acquired":true,"shares":2600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock issued upon vesting of a performance share unit (\"PSU\") award granted on February 20, 2015 as a result of the achievement of a clinical development milestone in 2016 and the settlement and issuance of those shares of common stock on Febuary 13, 2017."}],"balance_after":63686,"source":{"system":"sec-edgar","filing":"0001177648-17-000007","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764817000007/edgar.xml","form_type":"4"}},{"id":4545355,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2016-11-22T23:38:49.000Z","date":"2016-02-26","kind":"exercise","acquired":false,"shares":6689,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares subject to the option are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":1.293,"expiration_date":"2016-06-23","underlying":"Common Stock","underlying_shares":6689},"source":{"system":"sec-edgar","filing":"0001177648-16-000018","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764816000018/edgar.xml","form_type":"4/A","original_submission_date":"2016-02-29"}},{"id":4545354,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Common Stock","published_at":"2016-11-22T23:38:49.000Z","date":"2016-02-26","kind":"exercise","acquired":true,"shares":6689,"price":1.293,"value":8648.877,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amendment is being filed to correct the original Form 4 filing by amending the number of securities beneficially owned following the reported transaction from \"67,086\" to \"61,086\". This amendment corrects an administrative error."}],"balance_after":61086,"source":{"system":"sec-edgar","filing":"0001177648-16-000018","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764816000018/edgar.xml","form_type":"4/A","original_submission_date":"2016-02-29"}},{"id":4545269,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Restricted Stock Units","published_at":"2016-11-22T23:10:23.000Z","date":"2016-11-18","kind":"grant","acquired":true,"shares":10500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units convert into shares of common stock on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Such restricted stock units will vest as to one half the shares on the third anniversary of the date of award (November 18, 2019) and the remainder on the fourth anniversary of the date of award (November 18, 2020). The restricted stock unit shares that vest will be issued on the first December 15 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Such restricted stock units will vest as to one half the shares on the third anniversary of the date of award (November 18, 2019) and the remainder on the fourth anniversary of the date of award (November 18, 2020). The restricted stock unit shares that vest will be issued on the first December 15 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements."}],"balance_after":10500,"derivative":{"underlying":"Common Stock","underlying_shares":10500},"source":{"system":"sec-edgar","filing":"0001177648-16-000014","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764816000014/edgar.xml","form_type":"4"}},{"id":4545268,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2016-11-22T23:10:23.000Z","date":"2016-11-18","kind":"grant","acquired":true,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 18, 2016)."}],"balance_after":30000,"derivative":{"exercise_price":30,"expiration_date":"2026-11-18","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001177648-16-000014","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000117764816000014/edgar.xml","form_type":"4"}},{"id":4592643,"issuer":{"id":5673,"kind":"organization","name":"ENANTA PHARMACEUTICALS INC"},"owners":[{"id":83218,"kind":"person","name":"MELLETT PAUL J","position":1,"cik":"0001185034","reported_name":"MELLETT PAUL J","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Treasurer and CFO"}}],"security":"Stock Option (right to buy)","published_at":"2016-09-29T21:25:51.000Z","date":"2016-09-28","kind":"grant","acquired":true,"shares":3478,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On March 20, 2013, the reporting person was granted an option to purchase 41,763 shares of common stock, which becomes reportable on Form 4 only if and to the extent that the option becomes exercisable.  The option becomes exercisable in up to nine installments, based on Enanta's achievement of certain clinical milestones with respect to three or more programs that progress in clinical development. This report reflects the additional shares that became exercisable upon achievement of one of the milestones.  As of the date of this filing, a total of 33.33% of the shares subject to the option have become exercisable."}],"balance_after":3478,"derivative":{"exercise_price":14,"exercise_date":"2016-09-28","expiration_date":"2023-03-20","underlying":"Common Stock","underlying_shares":3478},"source":{"system":"sec-edgar","filing":"0001185034-16-000002","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1177648/000118503416000002/edgar.xml","form_type":"4"}}]}