Welcome to our dedicated page for Zai Lab SEC filings (Ticker: ZLAB), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Zai Lab Limited filings document the SEC reporting record for its American depositary shares and the governance and financing disclosures of a Cayman Islands biopharmaceutical issuer. Form 8-K reports furnish quarterly and annual operating results, financial-condition updates and clinical or regulatory corporate updates tied to its oncology, immunology, neuroscience and infectious disease programs.
The filing record also includes proxy materials covering annual meeting matters, board governance, executive compensation and equity awards. Material-event reports describe capital-structure and liquidity matters, including working-capital credit arrangements, guarantees for Zai Lab Shanghai and related covenant disclosures, while ADR disclosures distinguish the SEC-registered depositary shares from ordinary shares listed in Hong Kong.
Zai Lab Ltd director Richard Gaynor executed an open-market purchase of 1,736 American Depositary Shares (ADS) on July 1, 2026 at $19.05 per ADS. Each ADS represents ten ordinary shares, and ADSs and ordinary shares are fully fungible.
Following this transaction, Gaynor directly holds 80,737 ADS. The trade was carried out under a Rule 10b5-1 trading plan that he adopted on December 16, 2025, meaning the purchase was pre-scheduled rather than timed discretionarily.
Zai Lab Ltd director and CEO Du Ying reported compensation-related equity activity involving American Depositary Shares (ADSs) and Restricted Share Units (RSUs). On July 1–2, 2026, Ying exercised RSUs to acquire a total of 29,048 ADSs, with no open-market purchases or sales.
To cover tax obligations upon RSU vesting, 11,431 ADSs were withheld, a non-market disposition method. Ying also received a new grant of 80,393 RSUs, each representing a contingent right to one ADS, vesting annually over four years subject to continuous service.
Following these transactions, Ying directly held 1,221,401 ADSs. RSUs continue to vest in equal annual installments, and vested shares will be delivered in ADS form to Ying after each vesting date.
Zai Lab Ltd Chairperson & CEO Du Ying reported routine equity compensation activity involving American Depositary Shares (ADSs). On June 29, 2026, Restricted Share Units (RSUs) representing 17,970 ADSs were exercised, with each RSU converting into one ADS and each ADS representing ten ordinary shares.
On June 30, 2026, 7,026 ADSs were sold in the open market at $18.534 per ADS. Footnotes state these ADSs were sold automatically to cover taxes upon RSU vesting. After these transactions, Du Ying directly held 1,203,784 ADSs.
ZLAB Form 144 filing reports proposed resale of American Depositary Shares and discloses multiple recent dispositions by Ying Du. The filing lists a planned sale tied to Restricted Stock Vesting on 06/29/2026 and several completed sales dated between 04/02/2026 and 06/26/2026.
The listed past transactions show individual dispositions such as 50,000 shares on 05/13/2026 (proceeds $998,470.00) and other ADS sales with specified proceeds. The filing names Fidelity Brokerage Services LLC as a broker and identifies the securities as American Depositary Shares traded on NASDAQ.
Zai Lab Ltd Chief Legal Officer Edmondson Frazor Titus III exercised equity awards and sold shares mainly to cover taxes. On June 25, 2026, he converted 14,600 Restricted Share Units into the same number of American Depositary Shares (ADSs), at a $0.00 exercise price, as part of his compensation vesting schedule.
On June 26, 2026, 4,103 ADSs were sold at an average price of $17.461 per ADS, with a footnote stating the ADSs were sold automatically to cover taxes upon vesting of RSUs. After these transactions, he directly owned 30,346 ADSs, and the RSU award referenced in the filing was fully settled.
Zai Lab Ltd Chairperson and CEO Ying Du reported compensation-related share activity involving American Depositary Shares (ADSs). On June 25, 2026, 58,800 ADSs were acquired upon vesting of Restricted Share Units (RSUs), with each RSU converting into one ADS and each ADS representing ten ordinary shares. On June 26, 2026, 24,543 ADSs were sold at $17.461 per ADS to cover taxes due on the RSU vesting, leaving a net of 34,257 ADSs from this award. Following these transactions, Ying Du directly owns 1,192,840 ADSs.
Zai Lab Ltd Chief Financial Officer Yajing Chen reported routine equity compensation activity involving American Depositary Shares (ADSs). On June 25, 6,250 Restricted Share Units (RSUs) vested, resulting in the acquisition of 6,250 ADSs, with each RSU converting into one ADS at no cash cost. Each ADS represents ten ordinary shares. On June 26, 2,264 of these ADSs were sold automatically to cover tax obligations associated with the vesting, rather than as a discretionary portfolio sale. Following these transactions, Chen directly holds 35,691 ADSs, reflecting a net increase in ownership and no remaining RSUs from this specific grant.
ZLAB filed a Form 144 reporting a proposed sale of 2,264 American Depositary Shares following restricted stock vesting on 06/25/2026. The notice lists the ADS class as Nasdaq-listed and shows prior dispositions by Yajing Chen of 5,199 ADS on 04/02/2026 and 853 ADS on 04/06/2026.
ZLAB filing a Form 144 notice for the proposed sale of 4,103 American Depositary Shares on 06/25/2026, described as Restricted Stock Vesting and attributed to the issuer as compensation. The excerpt also lists prior ADS dispositions by Frazor T. Edmondson on 04/02/2026, 04/06/2026, and 05/14/2026 with the reported share counts and gross amounts shown.
ZLAB reported insider dispositions via Form 144 listing sales of American Depositary Shares. The filing lists 24,543 ADS indicated under "Securities To Be Sold" with an associated dollar figure of $428,552.69 and multiple past sale transactions by Ying Du between 04/02/2026 and 05/18/2026.
The transactions shown are labeled as related to Compensation and a Restricted Stock Vesting event on 06/25/2026. The filing names Fidelity Brokerage Services LLC and lists NASDAQ as the market identifier.