{"transactions":[{"id":715339,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-07-06T20:14:00.000Z","date":"2026-07-02","kind":"grant","planned":false,"acquired":true,"shares":80393,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RSUs vest in equal annual installments over four years beginning on 07/02/2027, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The RSUs vest in equal annual installments over four years beginning on 07/02/2027, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":80393,"derivative":{"underlying":"American Depositary Shares","underlying_shares":80393},"source":{"system":"sec-edgar","filing":"0000905148-26-003167","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003167/form4.xml","form_type":"4"}},{"id":715338,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-07-06T20:14:00.000Z","date":"2026-07-02","kind":"exercise","planned":false,"acquired":false,"shares":11048,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RSUs vest in equal annual installments over four years beginning on 07/02/2026, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The RSUs vest in equal annual installments over four years beginning on 07/02/2026, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":33146,"derivative":{"underlying":"American Depositary Shares","underlying_shares":11048},"source":{"system":"sec-edgar","filing":"0000905148-26-003167","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003167/form4.xml","form_type":"4"}},{"id":715337,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-07-06T20:14:00.000Z","date":"2026-07-01","kind":"exercise","planned":false,"acquired":false,"shares":18000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 07/01/2025, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 07/01/2025, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":36000,"derivative":{"underlying":"American Depositary Shares","underlying_shares":18000},"source":{"system":"sec-edgar","filing":"0000905148-26-003167","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003167/form4.xml","form_type":"4"}},{"id":715336,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-07-06T20:14:00.000Z","date":"2026-07-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":4348,"price":19.12,"value":83133.76,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were withheld to cover taxes upon vesting of RSUs."}],"balance_after":1221401,"source":{"system":"sec-edgar","filing":"0000905148-26-003167","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003167/form4.xml","form_type":"4"}},{"id":715335,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-07-06T20:14:00.000Z","date":"2026-07-02","kind":"exercise","planned":false,"acquired":true,"shares":11048,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1225749,"source":{"system":"sec-edgar","filing":"0000905148-26-003167","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003167/form4.xml","form_type":"4"}},{"id":715334,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-07-06T20:14:00.000Z","date":"2026-07-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":7083,"price":19.15,"value":135639.45,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were withheld to cover taxes upon vesting of RSUs."}],"balance_after":1214701,"source":{"system":"sec-edgar","filing":"0000905148-26-003167","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003167/form4.xml","form_type":"4"}},{"id":715333,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-07-06T20:14:00.000Z","date":"2026-07-01","kind":"exercise","planned":false,"acquired":true,"shares":18000,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1221784,"source":{"system":"sec-edgar","filing":"0000905148-26-003167","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003167/form4.xml","form_type":"4"}},{"id":721286,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-07-01T20:24:09.000Z","date":"2026-06-29","kind":"exercise","planned":false,"acquired":false,"shares":17970,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 06/29/2024, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 06/29/2024, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":17970,"derivative":{"underlying":"American Depositary Shares","underlying_shares":17970},"source":{"system":"sec-edgar","filing":"0000905148-26-003140","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003140/form4.xml","form_type":"4"}},{"id":721285,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-07-01T20:24:09.000Z","date":"2026-06-30","kind":"sale","planned":false,"acquired":false,"shares":7026,"price":18.534,"value":130219.884,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were sold automatically to cover taxes upon vesting of RSUs."}],"balance_after":1203784,"source":{"system":"sec-edgar","filing":"0000905148-26-003140","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003140/form4.xml","form_type":"4"}},{"id":721284,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-07-01T20:24:09.000Z","date":"2026-06-29","kind":"exercise","planned":false,"acquired":true,"shares":17970,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1210810,"source":{"system":"sec-edgar","filing":"0000905148-26-003140","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003140/form4.xml","form_type":"4"}},{"id":724059,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-06-29T20:17:59.000Z","date":"2026-06-25","kind":"exercise","planned":false,"acquired":false,"shares":58800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vested in equal annual installments over four years beginning on 06/25/2023, the first anniversary of the date of grant. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vested in equal annual installments over four years beginning on 06/25/2023, the first anniversary of the date of grant. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":0,"derivative":{"underlying":"American Depositary Shares","underlying_shares":58800},"source":{"system":"sec-edgar","filing":"0000905148-26-003122","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003122/form4.xml","form_type":"4"}},{"id":724058,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-06-29T20:17:59.000Z","date":"2026-06-26","kind":"sale","planned":false,"acquired":false,"shares":24543,"price":17.461,"value":428545.323,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were sold automatically to cover taxes upon vesting of RSUs."}],"balance_after":1192840,"source":{"system":"sec-edgar","filing":"0000905148-26-003122","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003122/form4.xml","form_type":"4"}},{"id":724057,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-06-29T20:17:59.000Z","date":"2026-06-25","kind":"exercise","planned":false,"acquired":true,"shares":58800,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1217383,"source":{"system":"sec-edgar","filing":"0000905148-26-003122","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826003122/form4.xml","form_type":"4"}},{"id":760254,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-28T20:19:44.000Z","date":"2026-05-27","kind":"gift","planned":false,"acquired":false,"shares":53850,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F3","text":"This transaction represents the transfer of shares held by the reporting person to a trust established for the benefit of an adult son of the reporting person."}],"balance_after":1158583,"source":{"system":"sec-edgar","filing":"0000905148-26-002725","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002725/form4.xml","form_type":"4"}},{"id":760253,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-28T20:19:44.000Z","date":"2026-05-27","kind":"gift","planned":false,"acquired":false,"shares":33993,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"This transaction represents the transfer of shares held by the reporting person to a trust established for the benefit of an adult son of the reporting person."}],"balance_after":1212433,"source":{"system":"sec-edgar","filing":"0000905148-26-002725","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002725/form4.xml","form_type":"4"}},{"id":760252,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-28T20:19:44.000Z","date":"2026-05-26","kind":"gift","planned":false,"acquired":false,"shares":19857,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"This transaction represents the transfer of shares held by the reporting person to a trust established for the benefit of an adult son of the reporting person."}],"balance_after":1246426,"source":{"system":"sec-edgar","filing":"0000905148-26-002725","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002725/form4.xml","form_type":"4"}},{"id":768063,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-05-21T20:19:18.000Z","date":"2026-05-19","kind":"exercise","planned":true,"acquired":false,"shares":261092,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":0,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":261092},"source":{"system":"sec-edgar","filing":"0000905148-26-002610","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002610/form4.xml","form_type":"4"}},{"id":768062,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-21T20:19:18.000Z","date":"2026-05-19","kind":"tax_withholding","planned":true,"acquired":false,"shares":117435,"price":18.75,"value":2201906.25,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1266283,"source":{"system":"sec-edgar","filing":"0000905148-26-002610","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002610/form4.xml","form_type":"4"}},{"id":768061,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-21T20:19:18.000Z","date":"2026-05-19","kind":"exercise","planned":true,"acquired":true,"shares":261092,"price":1.74,"value":454300.08,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1383718,"source":{"system":"sec-edgar","filing":"0000905148-26-002610","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002610/form4.xml","form_type":"4"}},{"id":772149,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-05-19T20:18:33.000Z","date":"2026-05-18","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":261092,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-002524","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002524/form4.xml","form_type":"4"}},{"id":772148,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-05-19T20:18:33.000Z","date":"2026-05-15","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":311092,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-002524","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002524/form4.xml","form_type":"4"}},{"id":772147,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-19T20:18:33.000Z","date":"2026-05-18","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":18.9953,"value":949765.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects a weighted average sale price of $18.9953 per share, at prices ranging from $18.78 to $19.38 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":1122626,"source":{"system":"sec-edgar","filing":"0000905148-26-002524","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002524/form4.xml","form_type":"4"}},{"id":772146,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-19T20:18:33.000Z","date":"2026-05-18","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1172626,"source":{"system":"sec-edgar","filing":"0000905148-26-002524","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002524/form4.xml","form_type":"4"}},{"id":772145,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-19T20:18:33.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":20.7422,"value":1037110.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects a weighted average sale price of $20.7422 per share, at prices ranging from $20.417 to $21.28 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":1122626,"source":{"system":"sec-edgar","filing":"0000905148-26-002524","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002524/form4.xml","form_type":"4"}},{"id":772144,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-19T20:18:33.000Z","date":"2026-05-15","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1172626,"source":{"system":"sec-edgar","filing":"0000905148-26-002524","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002524/form4.xml","form_type":"4"}},{"id":777081,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-05-15T20:45:33.000Z","date":"2026-05-14","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":361092,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-002403","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002403/form4.xml","form_type":"4"}},{"id":777080,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-05-15T20:45:33.000Z","date":"2026-05-13","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":411092,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-002403","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002403/form4.xml","form_type":"4"}},{"id":777079,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-15T20:45:33.000Z","date":"2026-05-14","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":20.0915,"value":1004575.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Reflects a weighted average sale price of $20.0915 per share, at prices ranging from $19.56 to $20.46 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":1122626,"source":{"system":"sec-edgar","filing":"0000905148-26-002403","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002403/form4.xml","form_type":"4"}},{"id":777078,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-15T20:45:33.000Z","date":"2026-05-14","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1172626,"source":{"system":"sec-edgar","filing":"0000905148-26-002403","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002403/form4.xml","form_type":"4"}},{"id":777077,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-15T20:45:33.000Z","date":"2026-05-13","kind":"sale","planned":true,"acquired":false,"shares":33769,"price":20.2223,"value":682886.8487,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects a weighted average sale price of $20.2223 per share, at prices ranging from $19.89 to $20.52 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":1122626,"source":{"system":"sec-edgar","filing":"0000905148-26-002403","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002403/form4.xml","form_type":"4"}},{"id":777076,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-15T20:45:33.000Z","date":"2026-05-13","kind":"sale","planned":true,"acquired":false,"shares":16231,"price":19.4432,"value":315582.5792,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects a weighted average sale price of $19.4432 per share, at prices ranging from $18.89 to $19.87 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":1156395,"source":{"system":"sec-edgar","filing":"0000905148-26-002403","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002403/form4.xml","form_type":"4"}},{"id":777075,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-05-15T20:45:33.000Z","date":"2026-05-13","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1172626,"source":{"system":"sec-edgar","filing":"0000905148-26-002403","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826002403/form4.xml","form_type":"4"}},{"id":812579,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-04-08T23:34:27.000Z","date":"2026-04-06","kind":"sale","planned":false,"acquired":false,"shares":2653,"price":20.448,"value":54248.544,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"These ADSs were sold automatically to cover taxes upon vesting of Restricted Share Units."}],"balance_after":1122626,"source":{"system":"sec-edgar","filing":"0000905148-26-001605","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001605/form4.xml","form_type":"4"}},{"id":816546,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-04-03T21:58:28.000Z","date":"2026-04-02","kind":"exercise","planned":false,"acquired":false,"shares":6750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The RSUs vest in equal annual installments over four years beginning on 04/03/2025, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F9","text":"The RSUs vest in equal annual installments over four years beginning on 04/03/2025, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":13500,"derivative":{"underlying":"American Depositary Shares","underlying_shares":6750},"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":816545,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-04-03T21:58:28.000Z","date":"2026-04-01","kind":"exercise","planned":false,"acquired":false,"shares":3400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The RSUs vested in equal annual installments over five years beginning on 04/01/2022, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F8","text":"The RSUs vested in equal annual installments over five years beginning on 04/01/2022, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":0,"derivative":{"underlying":"American Depositary Shares","underlying_shares":3400},"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":816544,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-04-03T21:58:28.000Z","date":"2026-04-01","kind":"exercise","planned":false,"acquired":false,"shares":10800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RSUs vest in equal annual installments over five years beginning on 04/01/2023, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The RSUs vest in equal annual installments over five years beginning on 04/01/2023, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":10800,"derivative":{"underlying":"American Depositary Shares","underlying_shares":10800},"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":816543,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Performance-Based Share Units","published_at":"2026-04-03T21:58:28.000Z","date":"2026-03-04","kind":"grant","planned":false,"acquired":true,"shares":25579,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each performance-based share unit (\"PSU\") represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The reporting person was granted PSUs on July 2, 2025 based on the satisfaction of specified performance criteria between January 1, 2025 through December 31, 2025. On March 4, 2026, the performance-based vesting conditions were confirmed for PSUs representing 25,579 ADSs. The PSUs vest in full on July 2, 2028, the third anniversary of the date of grant, subject to continuous service."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The reporting person was granted PSUs on July 2, 2025 based on the satisfaction of specified performance criteria between January 1, 2025 through December 31, 2025. On March 4, 2026, the performance-based vesting conditions were confirmed for PSUs representing 25,579 ADSs. The PSUs vest in full on July 2, 2028, the third anniversary of the date of grant, subject to continuous service."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":25579,"derivative":{"underlying":"American Depositary Shares","underlying_shares":25579},"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":816542,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-04-03T21:58:28.000Z","date":"2026-04-02","kind":"sale","planned":false,"acquired":false,"shares":5576,"price":20.39,"value":113694.64,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were sold automatically to cover taxes upon vesting of RSUs."}],"balance_after":1125279,"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":816541,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-04-03T21:58:28.000Z","date":"2026-04-02","kind":"exercise","planned":false,"acquired":true,"shares":6750,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1130855,"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":816540,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-04-03T21:58:28.000Z","date":"2026-04-01","kind":"exercise","planned":false,"acquired":true,"shares":3400,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1124105,"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":816539,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-04-03T21:58:28.000Z","date":"2026-04-01","kind":"exercise","planned":false,"acquired":true,"shares":10800,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1120705,"source":{"system":"sec-edgar","filing":"0000905148-26-001544","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001544/form4.xml","form_type":"4"}},{"id":841667,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-03-16T20:06:23.000Z","date":"2026-03-11","kind":"grant","planned":false,"acquired":true,"shares":32419,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each Restricted Share Unit (\"RSU\") represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs vest in equal annual installments over four years beginning on 03/11/2027, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs vest in equal annual installments over four years beginning on 03/11/2027, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":32419,"derivative":{"underlying":"American Depositary Shares","underlying_shares":32419},"source":{"system":"sec-edgar","filing":"0000905148-26-001282","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001282/form4.xml","form_type":"4"}},{"id":841666,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-16T20:06:23.000Z","date":"2026-03-11","kind":"grant","planned":false,"acquired":true,"shares":353430,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option vests in equal annual installments over four years beginning on 03/11/2027, the first anniversary of the date of grant, subject to continuous service."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":353430,"derivative":{"exercise_price":19.34,"expiration_date":"2036-03-11","underlying":"American Depositary Shares","underlying_shares":353430},"source":{"system":"sec-edgar","filing":"0000905148-26-001282","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001282/form4.xml","form_type":"4"}},{"id":846146,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2026-03-12T20:12:08.000Z","date":"2026-03-10","kind":"exercise","planned":true,"acquired":false,"shares":2655,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RSUs vest in equal annual installments over four years beginning on 03/10/2026, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The RSUs vest in equal annual installments over four years beginning on 03/10/2026, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":7965,"derivative":{"underlying":"American Depositary Shares","underlying_shares":2655},"source":{"system":"sec-edgar","filing":"0000905148-26-001233","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001233/form4.xml","form_type":"4"}},{"id":846145,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-12T20:12:08.000Z","date":"2026-03-10","kind":"exercise","planned":true,"acquired":false,"shares":261092,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":461092,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":261092},"source":{"system":"sec-edgar","filing":"0000905148-26-001233","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001233/form4.xml","form_type":"4"}},{"id":846144,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-12T20:12:08.000Z","date":"2026-03-11","kind":"sale","planned":true,"acquired":false,"shares":1067,"price":19.084,"value":20362.628,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F5","text":"These ADSs were sold automatically to cover taxes upon vesting of RSUs."}],"balance_after":1109905,"source":{"system":"sec-edgar","filing":"0000905148-26-001233","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001233/form4.xml","form_type":"4"}},{"id":846143,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-12T20:12:08.000Z","date":"2026-03-10","kind":"exercise","planned":true,"acquired":true,"shares":2655,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F3","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":1110972,"source":{"system":"sec-edgar","filing":"0000905148-26-001233","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001233/form4.xml","form_type":"4"}},{"id":846142,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-12T20:12:08.000Z","date":"2026-03-10","kind":"tax_withholding","planned":true,"acquired":false,"shares":116936,"price":19.41,"value":2269727.76,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1108317,"source":{"system":"sec-edgar","filing":"0000905148-26-001233","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001233/form4.xml","form_type":"4"}},{"id":846141,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-12T20:12:08.000Z","date":"2026-03-10","kind":"exercise","planned":true,"acquired":true,"shares":261092,"price":1.74,"value":454300.08,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."}],"balance_after":1225253,"source":{"system":"sec-edgar","filing":"0000905148-26-001233","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001233/form4.xml","form_type":"4"}},{"id":851055,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-10T20:08:19.000Z","date":"2026-03-09","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":722184,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-001219","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001219/form4.xml","form_type":"4"}},{"id":851054,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-10T20:08:19.000Z","date":"2026-03-06","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":772184,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-001219","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001219/form4.xml","form_type":"4"}},{"id":851053,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-10T20:08:19.000Z","date":"2026-03-09","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":19.0293,"value":951465.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects a weighted average sale price of $19.0293 per share, at prices ranging from $18.78 to $19.25 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":964161,"source":{"system":"sec-edgar","filing":"0000905148-26-001219","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001219/form4.xml","form_type":"4"}},{"id":851052,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-10T20:08:19.000Z","date":"2026-03-09","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":1014161,"source":{"system":"sec-edgar","filing":"0000905148-26-001219","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001219/form4.xml","form_type":"4"}},{"id":851051,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-10T20:08:19.000Z","date":"2026-03-06","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":19.4187,"value":970935.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects a weighted average sale price of $19.4187 per share, at prices ranging from $19.04 to $19.68 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":964161,"source":{"system":"sec-edgar","filing":"0000905148-26-001219","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001219/form4.xml","form_type":"4"}},{"id":851050,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-10T20:08:19.000Z","date":"2026-03-06","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":1014161,"source":{"system":"sec-edgar","filing":"0000905148-26-001219","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001219/form4.xml","form_type":"4"}},{"id":855963,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-06T21:25:46.000Z","date":"2026-03-05","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":822184,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-001193","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001193/form4.xml","form_type":"4"}},{"id":855962,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-06T21:25:46.000Z","date":"2026-03-04","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":872184,"derivative":{"exercise_price":1.74,"expiration_date":"2026-08-25","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-26-001193","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001193/form4.xml","form_type":"4"}},{"id":855961,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-06T21:25:46.000Z","date":"2026-03-05","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":19.2211,"value":961055.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Reflects a weighted average sale price of $19.2211 per share, at prices ranging from $18.89 to $19.395 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":964161,"source":{"system":"sec-edgar","filing":"0000905148-26-001193","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001193/form4.xml","form_type":"4"}},{"id":855960,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-06T21:25:46.000Z","date":"2026-03-05","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":1014161,"source":{"system":"sec-edgar","filing":"0000905148-26-001193","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001193/form4.xml","form_type":"4"}},{"id":855959,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-06T21:25:46.000Z","date":"2026-03-04","kind":"sale","planned":true,"acquired":false,"shares":35710,"price":19.3176,"value":689831.496,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects a weighted average sale price of $19.3176 per share, at prices ranging from $19.09 to $19.50 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":964161,"source":{"system":"sec-edgar","filing":"0000905148-26-001193","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001193/form4.xml","form_type":"4"}},{"id":855958,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-06T21:25:46.000Z","date":"2026-03-04","kind":"sale","planned":true,"acquired":false,"shares":14290,"price":18.7769,"value":268321.901,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 11, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects a weighted average sale price of $18.7769 per share, at prices ranging from $18.09 to $19.085 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":999871,"source":{"system":"sec-edgar","filing":"0000905148-26-001193","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001193/form4.xml","form_type":"4"}},{"id":855957,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2026-03-06T21:25:46.000Z","date":"2026-03-04","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1.74,"value":87000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":1014161,"source":{"system":"sec-edgar","filing":"0000905148-26-001193","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514826001193/form4.xml","form_type":"4"}},{"id":971262,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-12-12T21:42:08.000Z","date":"2025-12-11","kind":"gift","planned":false,"acquired":true,"shares":377520,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F3","text":"This transaction represents an annuity payment automatically made, for no consideration, from a grantor retained annuity trust for which there is an independent trustee."}],"balance_after":964161,"source":{"system":"sec-edgar","filing":"0000905148-25-004326","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825004326/form4.xml","form_type":"4"}},{"id":971261,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-12-12T21:42:08.000Z","date":"2025-12-10","kind":"gift","planned":false,"acquired":false,"shares":303378,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"This transaction represents a bona fide gift to a grantor retained annuity trust for which there is an independent trustee."}],"balance_after":586641,"source":{"system":"sec-edgar","filing":"0000905148-25-004326","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825004326/form4.xml","form_type":"4"}},{"id":1049793,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-09-03T20:42:23.000Z","date":"2025-08-29","kind":"exercise","planned":false,"acquired":false,"shares":604376,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Stock Options fully vested as of March 9, 2021."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":0,"derivative":{"exercise_price":1.2,"expiration_date":"2026-03-09","underlying":"American Depositary Shares","underlying_shares":604376},"source":{"system":"sec-edgar","filing":"0000905148-25-003280","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825003280/form4.xml","form_type":"4"}},{"id":1049792,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-09-03T20:42:23.000Z","date":"2025-08-29","kind":"tax_withholding","planned":false,"acquired":false,"shares":251319,"price":32.59,"value":8190486.21,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":890019,"source":{"system":"sec-edgar","filing":"0000905148-25-003280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825003280/form4.xml","form_type":"4"}},{"id":1049791,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-09-03T20:42:23.000Z","date":"2025-08-29","kind":"exercise","planned":false,"acquired":true,"shares":604376,"price":1.2,"value":725251.2,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":1141338,"source":{"system":"sec-edgar","filing":"0000905148-25-003280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825003280/form4.xml","form_type":"4"}},{"id":1066507,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-08-14T21:22:43.000Z","date":"2025-08-13","kind":"exercise","planned":true,"acquired":false,"shares":46387,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":0,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":46387},"source":{"system":"sec-edgar","filing":"0000905148-25-002978","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002978/form4.xml","form_type":"4"}},{"id":1066506,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-08-14T21:22:43.000Z","date":"2025-08-12","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":46387,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-25-002978","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002978/form4.xml","form_type":"4"}},{"id":1066505,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-14T21:22:43.000Z","date":"2025-08-13","kind":"sale","planned":true,"acquired":false,"shares":46387,"price":35.4687,"value":1645286.5869,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects a weighted average sale price of $35.4687 per share, at prices ranging from $34.845 to $35.80 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":536962,"source":{"system":"sec-edgar","filing":"0000905148-25-002978","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002978/form4.xml","form_type":"4"}},{"id":1066504,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-14T21:22:43.000Z","date":"2025-08-13","kind":"exercise","planned":true,"acquired":true,"shares":46387,"price":0.6,"value":27832.2,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":583349,"source":{"system":"sec-edgar","filing":"0000905148-25-002978","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002978/form4.xml","form_type":"4"}},{"id":1066503,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-14T21:22:43.000Z","date":"2025-08-12","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":34.2511,"value":1712555.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects a weighted average sale price of $34.2511 per share, at prices ranging from $33.70 to $34.60 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":536962,"source":{"system":"sec-edgar","filing":"0000905148-25-002978","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002978/form4.xml","form_type":"4"}},{"id":1066502,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-14T21:22:43.000Z","date":"2025-08-12","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":0.6,"value":30000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":586962,"source":{"system":"sec-edgar","filing":"0000905148-25-002978","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002978/form4.xml","form_type":"4"}},{"id":1068958,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-08-12T20:45:19.000Z","date":"2025-08-11","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":96387,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-25-002834","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002834/form4.xml","form_type":"4"}},{"id":1068957,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-08-12T20:45:19.000Z","date":"2025-08-08","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":146387,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-25-002834","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002834/form4.xml","form_type":"4"}},{"id":1068956,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-12T20:45:19.000Z","date":"2025-08-11","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":34.6363,"value":1731815.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects a weighted average sale price of $34.6363 per share, at prices ranging from $34.22 to $35.19 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":536962,"source":{"system":"sec-edgar","filing":"0000905148-25-002834","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002834/form4.xml","form_type":"4"}},{"id":1068955,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-12T20:45:19.000Z","date":"2025-08-11","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":0.6,"value":30000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":586962,"source":{"system":"sec-edgar","filing":"0000905148-25-002834","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002834/form4.xml","form_type":"4"}},{"id":1068954,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-12T20:45:19.000Z","date":"2025-08-08","kind":"sale","planned":true,"acquired":false,"shares":50000,"price":34.7431,"value":1737155.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects a weighted average sale price of $34.7431 per share, at prices ranging from $34.095 to $35.00 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":536962,"source":{"system":"sec-edgar","filing":"0000905148-25-002834","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002834/form4.xml","form_type":"4"}},{"id":1068953,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-08-12T20:45:19.000Z","date":"2025-08-08","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":0.6,"value":30000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":586962,"source":{"system":"sec-edgar","filing":"0000905148-25-002834","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002834/form4.xml","form_type":"4"}},{"id":1091279,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2025-07-07T20:13:07.000Z","date":"2025-07-02","kind":"grant","planned":false,"acquired":true,"shares":44194,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Share Unit (\"RSU\") represents a contingent right to receive one American Depositary Share (\"ADS\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs vest in equal annual installments over four years beginning on 07/02/2026, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs vest in equal annual installments over four years beginning on 07/02/2026, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F3","text":"Each ADS represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":44194,"derivative":{"underlying":"American Depositary Shares","underlying_shares":44194},"source":{"system":"sec-edgar","filing":"0000905148-25-002344","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002344/form4.xml","form_type":"4"}},{"id":1092522,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2025-07-03T20:07:32.000Z","date":"2025-07-01","kind":"exercise","planned":false,"acquired":false,"shares":18000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 07/01/2025, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 07/01/2025, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":54000,"derivative":{"underlying":"American Depositary Shares","underlying_shares":18000},"source":{"system":"sec-edgar","filing":"0000905148-25-002336","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002336/form4.xml","form_type":"4"}},{"id":1092521,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-07-03T20:07:32.000Z","date":"2025-07-02","kind":"sale","planned":false,"acquired":false,"shares":7072,"price":35.23,"value":249146.56,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were sold automatically to cover taxes upon vesting of RSUs."}],"balance_after":536962,"source":{"system":"sec-edgar","filing":"0000905148-25-002336","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002336/form4.xml","form_type":"4"}},{"id":1092520,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-07-03T20:07:32.000Z","date":"2025-07-01","kind":"exercise","planned":false,"acquired":true,"shares":18000,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":544034,"source":{"system":"sec-edgar","filing":"0000905148-25-002336","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002336/form4.xml","form_type":"4"}},{"id":1097941,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2025-07-01T20:30:46.000Z","date":"2025-06-27","kind":"exercise","planned":false,"acquired":false,"shares":17970,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 06/29/2024, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 06/29/2024, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":35940,"derivative":{"underlying":"American Depositary Shares","underlying_shares":17970},"source":{"system":"sec-edgar","filing":"0000905148-25-002291","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002291/form4.xml","form_type":"4"}},{"id":1097940,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-07-01T20:30:46.000Z","date":"2025-06-30","kind":"sale","planned":false,"acquired":false,"shares":6918,"price":35.52,"value":245727.36,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were sold automatically to cover taxes upon vesting of RSUs."}],"balance_after":526034,"source":{"system":"sec-edgar","filing":"0000905148-25-002291","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002291/form4.xml","form_type":"4"}},{"id":1097939,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-07-01T20:30:46.000Z","date":"2025-06-27","kind":"exercise","planned":false,"acquired":true,"shares":17970,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":532952,"source":{"system":"sec-edgar","filing":"0000905148-25-002291","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002291/form4.xml","form_type":"4"}},{"id":1100289,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Restricted Share Units","published_at":"2025-06-27T20:15:20.000Z","date":"2025-06-25","kind":"exercise","planned":false,"acquired":false,"shares":58800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 06/25/2023, the first anniversary of the date of grant. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vest in equal annual installments over four years beginning on 06/25/2023, the first anniversary of the date of grant. Vested shares will be delivered in the form of ADSs to the reporting person following vesting."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":58800,"derivative":{"underlying":"American Depositary Shares","underlying_shares":58800},"source":{"system":"sec-edgar","filing":"0000905148-25-002263","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002263/form4.xml","form_type":"4"}},{"id":1100288,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-06-27T20:15:20.000Z","date":"2025-06-26","kind":"sale","planned":false,"acquired":false,"shares":23669,"price":36.132,"value":855208.308,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F4","text":"These ADSs were sold automatically to cover taxes upon vesting of RSUs."}],"balance_after":514982,"source":{"system":"sec-edgar","filing":"0000905148-25-002263","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002263/form4.xml","form_type":"4"}},{"id":1100287,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-06-27T20:15:20.000Z","date":"2025-06-25","kind":"exercise","planned":false,"acquired":true,"shares":58800,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"shares","element":"transactionShares","label":"F2","text":"ADSs acquired upon vesting of Restricted Share Units (\"RSUs\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each RSU represents a contingent right to receive one ADS."}],"balance_after":538651,"source":{"system":"sec-edgar","filing":"0000905148-25-002263","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825002263/form4.xml","form_type":"4"}},{"id":1147407,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-14","kind":"exercise","planned":true,"acquired":false,"shares":46389,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":196387,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":46389},"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1147406,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-13","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":242776,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1147405,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-14","kind":"sale","planned":true,"acquired":false,"shares":383,"price":28.828,"value":11041.124,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."}],"balance_after":479851,"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1147404,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-14","kind":"sale","planned":true,"acquired":false,"shares":46006,"price":28.0793,"value":1291816.2758,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Reflects a weighted average sale price of $28.0793 per share, at prices ranging from $27.81 to $28.76 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":480234,"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1147403,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-14","kind":"exercise","planned":true,"acquired":true,"shares":46389,"price":0.6,"value":27833.4,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":526240,"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1147402,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-13","kind":"sale","planned":true,"acquired":false,"shares":2220,"price":28.8935,"value":64143.57,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects a weighted average sale price of $28.8935 per share, at prices ranging from $28.88 to $28.92 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":479851,"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1147401,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-13","kind":"sale","planned":true,"acquired":false,"shares":47780,"price":28.5581,"value":1364506.018,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects a weighted average sale price of $28.5581 per share, at prices ranging from $27.88 to $28.878 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":482071,"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1147400,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-05-15T20:27:50.000Z","date":"2025-05-13","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":0.6,"value":30000.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":529851,"source":{"system":"sec-edgar","filing":"0000905148-25-001753","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001753/form4.xml","form_type":"4"}},{"id":1150906,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-05-13T20:48:13.000Z","date":"2025-05-12","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":292776,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-25-001597","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001597/form4.xml","form_type":"4"}},{"id":1150905,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-05-13T20:48:13.000Z","date":"2025-05-09","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The Stock Options fully vested as of October 22, 2020."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."}],"balance_after":342776,"derivative":{"exercise_price":0.6,"expiration_date":"2025-10-22","underlying":"American Depositary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000905148-25-001597","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001597/form4.xml","form_type":"4"}},{"id":1150904,"issuer":{"id":4271,"kind":"organization","name":"Zai Lab Ltd","symbol":"ZLAB"},"owners":[{"id":32142,"kind":"person","name":"Du Ying","position":1,"cik":"0001731790","reported_name":"Du Ying","relationship":{"director":true,"officer":true,"officer_title":"Chairperson & CEO"}}],"security":"American Depositary Shares","published_at":"2025-05-13T20:48:13.000Z","date":"2025-05-12","kind":"sale","planned":true,"acquired":false,"shares":616,"price":29.9201,"value":18430.7816,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each American Depositary Share (\"ADS\") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Reflects a weighted average sale price of $29.9201 per share, at prices ranging from $29.91 to $30.00 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":479851,"source":{"system":"sec-edgar","filing":"0000905148-25-001597","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1731790/000090514825001597/form4.xml","form_type":"4"}}],"next_cursor":"2025-05-13T20:48:13.000000Z,1150904"}