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[SCHEDULE 13G/A] Zai Lab Limited American SEC Filing

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13G/A
Rhea-AI Filing Summary

Wellington Management and affiliates reported beneficial ownership of 50,084,792 shares of Zai Lab Ltd. common stock, representing 4.51% of the class as of the report. The filing is a Schedule 13G (Amendment No. 5) disclosing that the reporting persons have 0 sole voting or dispositive power, 42,744,773 shares of shared voting power and 50,084,792 shares of shared dispositive power. The securities are owned of record by clients of the Wellington Investment Advisers and the filing states no client is known to own more than 5% of the class. The document lists the issuer's principal executive office in Shanghai and is certified and signed by a Wellington regulatory analyst on 08/12/2025.

Wellington Management e le sue affiliate hanno dichiarato la proprietà beneficiaria di 50,084,792 azioni ordinarie di Zai Lab Ltd., pari al 4.51% della categoria alla data del rapporto. La comunicazione è un Schedule 13G (Emendamento n. 5) che indica che i soggetti segnalanti non detengono alcun potere di voto o di disposizione esclusivo (0), possiedono 42,744,773 azioni con potere di voto condiviso e 50,084,792 azioni con potere di disposizione condiviso. I titoli risultano intestati a clienti dei Wellington Investment Advisers e il documento afferma che nessun cliente è noto per detenere oltre il 5% della categoria. L'ufficio esecutivo principale dell'emittente è indicato a Shanghai; il documento è certificato e firmato da un analista regolamentare di Wellington in data 08/12/2025.

Wellington Management y sus afiliadas informaron la propiedad beneficiaria de 50,084,792 acciones ordinarias de Zai Lab Ltd., lo que representa el 4.51% de la clase a la fecha del informe. La presentación es un Schedule 13G (Enmienda No. 5) que revela que las personas informantes no tienen poder exclusivo de voto o disposición (0), tienen 42,744,773 acciones con poder de voto compartido y 50,084,792 acciones con poder de disposición compartido. Los valores están inscritos a nombre de clientes de Wellington Investment Advisers y la presentación indica que no se conoce a ningún cliente que posea más del 5% de la clase. La oficina principal del emisor figura en Shanghai y el documento está certificado y firmado por un analista regulatorio de Wellington el 08/12/2025.

Wellington Management � 계열사는 Zai Lab Ltd. 보통� 50,084,792주에 대� 실소유권(beneficial ownership)� 보고했으�, 이는 보고� 기준 해당 주식군의 4.51%� 해당합니�. 해당 제출서는 Schedule 13G(수정� No. 5)�, 신고인들� 단독 의결� 또는 처분권을 0으로 보유하고 있고, 42,744,773주는 공동 의결권을, 50,084,792주는 공동 처분권을 보유하고 있음� 공개합니�. 증권은 Wellington Investment Advisers� 고객 명의� 소유되어 있으�, 제출서에� 어떤 고객� 해당 주식군의 5%� 초과 보유� 것으� 알려� 있지 않다� 명시되어 있습니다. 발행회사� 주요 영업소는 상하이로 기재되어 있으�, 문서� Wellington� 규제 분석가가 08/12/2025� 인증하고 서명했습니다.

Wellington Management et ses affiliés ont déclaré la propriété bénéficiaire de 50,084,792 actions ordinaires de Zai Lab Ltd., représentant 4.51% de la catégorie à la date du rapport. Le dépôt est un Schedule 13G (Amendement n°5) indiquant que les personnes déclarantes n'ont aucun pouvoir exclusif de vote ou de disposition (0), détiennent 42,744,773 actions avec pouvoir de vote partagé et 50,084,792 actions avec pouvoir de disposition partagé. Les titres sont inscrits au nom de clients de Wellington Investment Advisers et le dépôt précise qu'aucun client n'est connu pour détenir plus de 5% de la catégorie. Le siège social de l'émetteur est indiqué à Shanghai et le document est certifié et signé par un analyste réglementaire de Wellington le 08/12/2025.

Wellington Management und verbundene Unternehmen meldeten das wirtschaftliche Eigentum an 50,084,792 Aktien der Stammaktien von Zai Lab Ltd., was zum Zeitpunkt des Berichts 4.51% der Klasse entspricht. Die Einreichung ist ein Schedule 13G (Änderung Nr. 5) und gibt an, dass die meldenden Personen keine alleinige Stimm- oder Verfügungsgewalt haben (0), 42,744,773 Aktien mit geteilter Stimmgewalt und 50,084,792 Aktien mit geteilter Verfügungsgewalt besitzen. Die Wertpapiere sind auf Kunden der Wellington Investment Advisers eingetragen; die Einreichung besagt, dass kein Kunde dafür bekannt ist, mehr als 5% der Klasse zu halten. Der Hauptsitz des Emittenten wird in Shanghai angegeben. Das Dokument ist von einem regulatorischen Analysten von Wellington am 08/12/2025 zertifiziert und unterzeichnet.

Positive
  • None.
Negative
  • None.

Insights

TL;DR: A major asset manager discloses a 4.51% passive stake in Zai Lab held for clients; no single client exceeds 5%.

The Schedule 13G/A shows Wellington Management Group LLP and affiliated entities collectively beneficially own 50,084,792 shares of Zai Lab common stock with shared voting power of 42,744,773. The filing indicates these holdings are client-owned and held in the ordinary course of business, consistent with a passive investor disclosure rather than an activist intent. For investors, this clarifies large institutional exposure but does not signal a change in control or a proxy contest given the sub-5% client concentration and the use of a 13G filing.

TL;DR: Ownership disclosure improves transparency; classification as 13G implies passive intent and limited governance impact.

The filing identifies multiple Wellington entities and investment adviser subsidiaries that collectively hold the position and confirms that no client is known to control more than 5% of the class. Shared voting and dispositive powers are disclosed, with no sole control reported. From a governance perspective, this is routine institutional reporting: it documents material institutional ownership but contains no indication of coordinated governance action or control-seeking behavior.

Wellington Management e le sue affiliate hanno dichiarato la proprietà beneficiaria di 50,084,792 azioni ordinarie di Zai Lab Ltd., pari al 4.51% della categoria alla data del rapporto. La comunicazione è un Schedule 13G (Emendamento n. 5) che indica che i soggetti segnalanti non detengono alcun potere di voto o di disposizione esclusivo (0), possiedono 42,744,773 azioni con potere di voto condiviso e 50,084,792 azioni con potere di disposizione condiviso. I titoli risultano intestati a clienti dei Wellington Investment Advisers e il documento afferma che nessun cliente è noto per detenere oltre il 5% della categoria. L'ufficio esecutivo principale dell'emittente è indicato a Shanghai; il documento è certificato e firmato da un analista regolamentare di Wellington in data 08/12/2025.

Wellington Management y sus afiliadas informaron la propiedad beneficiaria de 50,084,792 acciones ordinarias de Zai Lab Ltd., lo que representa el 4.51% de la clase a la fecha del informe. La presentación es un Schedule 13G (Enmienda No. 5) que revela que las personas informantes no tienen poder exclusivo de voto o disposición (0), tienen 42,744,773 acciones con poder de voto compartido y 50,084,792 acciones con poder de disposición compartido. Los valores están inscritos a nombre de clientes de Wellington Investment Advisers y la presentación indica que no se conoce a ningún cliente que posea más del 5% de la clase. La oficina principal del emisor figura en Shanghai y el documento está certificado y firmado por un analista regulatorio de Wellington el 08/12/2025.

Wellington Management � 계열사는 Zai Lab Ltd. 보통� 50,084,792주에 대� 실소유권(beneficial ownership)� 보고했으�, 이는 보고� 기준 해당 주식군의 4.51%� 해당합니�. 해당 제출서는 Schedule 13G(수정� No. 5)�, 신고인들� 단독 의결� 또는 처분권을 0으로 보유하고 있고, 42,744,773주는 공동 의결권을, 50,084,792주는 공동 처분권을 보유하고 있음� 공개합니�. 증권은 Wellington Investment Advisers� 고객 명의� 소유되어 있으�, 제출서에� 어떤 고객� 해당 주식군의 5%� 초과 보유� 것으� 알려� 있지 않다� 명시되어 있습니다. 발행회사� 주요 영업소는 상하이로 기재되어 있으�, 문서� Wellington� 규제 분석가가 08/12/2025� 인증하고 서명했습니다.

Wellington Management et ses affiliés ont déclaré la propriété bénéficiaire de 50,084,792 actions ordinaires de Zai Lab Ltd., représentant 4.51% de la catégorie à la date du rapport. Le dépôt est un Schedule 13G (Amendement n°5) indiquant que les personnes déclarantes n'ont aucun pouvoir exclusif de vote ou de disposition (0), détiennent 42,744,773 actions avec pouvoir de vote partagé et 50,084,792 actions avec pouvoir de disposition partagé. Les titres sont inscrits au nom de clients de Wellington Investment Advisers et le dépôt précise qu'aucun client n'est connu pour détenir plus de 5% de la catégorie. Le siège social de l'émetteur est indiqué à Shanghai et le document est certifié et signé par un analyste réglementaire de Wellington le 08/12/2025.

Wellington Management und verbundene Unternehmen meldeten das wirtschaftliche Eigentum an 50,084,792 Aktien der Stammaktien von Zai Lab Ltd., was zum Zeitpunkt des Berichts 4.51% der Klasse entspricht. Die Einreichung ist ein Schedule 13G (Änderung Nr. 5) und gibt an, dass die meldenden Personen keine alleinige Stimm- oder Verfügungsgewalt haben (0), 42,744,773 Aktien mit geteilter Stimmgewalt und 50,084,792 Aktien mit geteilter Verfügungsgewalt besitzen. Die Wertpapiere sind auf Kunden der Wellington Investment Advisers eingetragen; die Einreichung besagt, dass kein Kunde dafür bekannt ist, mehr als 5% der Klasse zu halten. Der Hauptsitz des Emittenten wird in Shanghai angegeben. Das Dokument ist von einem regulatorischen Analysten von Wellington am 08/12/2025 zertifiziert und unterzeichnet.






Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)






SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G



Wellington Management Group LLP
Signature:Taisia Lowe
Name/Title:Regulatory Analyst
Date:08/12/2025
Wellington Group Holdings LLP
Signature:Taisia Lowe
Name/Title:Regulatory Analyst
Date:08/12/2025
Wellington Investment Advisors Holdings LLP
Signature:Taisia Lowe
Name/Title:Regulatory Analyst
Date:08/12/2025

FAQ

What stake does Wellington report in Zai Lab (ZLAB)?

Wellington and affiliates report beneficial ownership of 50,084,792 shares, equal to 4.51% of Zai Lab common stock.

Does Wellington have sole voting or dispositive power over the ZLAB shares?

No. The filing reports 0 shares with sole voting power and 0 shares with sole dispositive power; voting and dispositive power are shared.

Are the ZLAB shares held for Wellington's clients or the firm?

The securities are owned of record by clients of the Wellington Investment Advisers and are held in the ordinary course of business.

Does any Wellington client hold more than 5% of Zai Lab according to the filing?

No. The filing states no client is known to have the right to receive dividends or proceeds with respect to more than 5% of the class.

When was the Schedule 13G/A signed and who signed it?

The filing is signed by Taisia Lowe, Regulatory Analyst, on 08/12/2025.
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