As of November 10, 2026, Zai Lab Ltd is a publicly traded company (Nasdaq: ZLAB); its largest reported holder is RTW Investments, with 6.3% on Schedule 13G of February 17, 2026, then Chen Yu (5.3%). The largest insider holding is Ying Du, the chairman and chief executive, with 1,221,401 shares (1.4% of shares outstanding), per Form 4 of July 6, 2026 (Schedule 13G, February 17, 2026).
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Is Zai Lab Ltd a real, registered company?
- Zai Lab Limited files with the SEC under CIK 1704292 (its SEC filings).
- Its shares are listed under the ticker ZLAB on Nasdaq (SEC company record).
- Incorporated in E9, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Zai Lab Ltd in our court records and SEC 8-K records (as of 2026-11-10).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Chen Yu (filed 2026-06-11).
Who are Zai Lab Ltd's owners and officers?
Zai Lab Ltd: industry Pharmaceutical Preparations (Form D, 2026-11-09).
Officers and directors, each with the role and the filing that names them:
- : Executive Officer, Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Director (Form D, 2026-11-09)
- : Executive Officer (Form D, 2026-11-09)
- : Executive Officer (Form D, 2026-11-09)
- : Executive Officer (Form D, 2026-11-09)
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-06-11 | Chen Yu | 5.3% |
| Schedule 13G, 2026-04-06 | Ra Capital Management, L.P. | 5.2% |
| Schedule 13G, 2026-02-17 | Rtw Investments, LP | 6.3% |
| Schedule 13G/A, 2026-02-13 | Capital World Investors | 0.2% |
| Schedule 13G/A, 2026-02-13 | Qiming Corporate Gp Iv, LTD. | 4.4% |
| Schedule 13G/A, 2026-02-10 | Wellington Management Group LLP | 4.3% |
| Schedule 13G/A, 2026-02-05 | Fmr LLC | 3.9% |
| Schedule 13G/A, 2025-11-14 | Rtw Investments, LP | 2.1% |
| Schedule 13G, 2025-11-12 | Wellington Management Group LLP | 6% |
| Schedule 13G/A, 2025-11-05 | Fmr LLC | 6.4% |
| Schedule 13G, 2025-08-14 | Rtw Investments, LP | 5.1% |
| Schedule 13G/A, 2025-08-12 | Wellington Management Group LLP | 4.5% |
Questions about who owns Zai Lab Ltd
Who owns Zai Lab Ltd?
On this page, 3 holders' latest ownership filings report 5% or more of Zai Lab Ltd: Rtw Investments, LP (6.3%, Schedule 13G, filed 2026-02-17), Chen Yu (5.3%, Schedule 13G, filed 2026-06-11) and Ra Capital Management, L.P. (5.2%, Schedule 13G, filed 2026-04-06).
Who are the largest shareholders of Zai Lab Ltd?
By the share each holder's latest filing reports, the largest holders of Zai Lab Ltd on this page are Rtw Investments, LP (6.3%), Chen Yu (5.3%) and Ra Capital Management, L.P. (5.2%).
When did Rtw Investments, LP buy into Zai Lab Ltd?
The filings give report dates, not purchase dates. The earliest filing from Rtw Investments, LP on this page is the Schedule 13G, filed 2025-08-14, reporting 5.1%; its latest, Schedule 13G filed 2026-02-17, reports 6.3%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on Zai Lab Ltd covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
19 cited sources found
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Which insiders own Zai Lab Ltd shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chairman and chief executive: 1,221,401 shares (1.4% of shares outstanding) (Form 4, 2026-07-06).
- , J.D., a director: 416,121 shares (0.47% of shares outstanding) (Form 4, 2026-06-22).
- , a director: 122,140 shares (0.14% of shares outstanding) (Form 4, 2026-06-22).
- Joshua L. Smiley: 117,602 shares (0.13% of shares outstanding) (Form 4, 2026-04-08).
- , a director: 96,297 shares (0.11% of shares outstanding) (Form 4, 2026-06-22).
Shares outstanding: 88,592,343 as of 2021-02-26, from the company's latest SEC cover page.
How much has Zai Lab Ltd raised?
| Filed | Sold | Offered |
|---|---|---|
| Form D, 2026-11-09 | $249.93M | $249.93M |
Keep reading
More on Zai Lab Ltd and the records around it.
Zai Lab Ltd elsewhere on the record
- 5%+ stake filings Jun 2026
Companies that share a holder
- TCG Crossover GP II, LLC also filed stake reports on 21 other companies: ALX Oncology Holdings Inc. (Aug 2026), First Tracks Biotherapeutics, Inc. (Aug 2026), Fulcrum Therapeutics, Inc. (Aug 2026)
- RTW Investments, LP also filed stake reports on 43 other companies: CG Oncology, Inc. (Aug 2026), iRhythm Holdings, Inc. (Aug 2026), Kailera Therapeutics, Inc. (Aug 2026)
- RA Capital Management, L.P. also filed stake reports on 100 other companies: Climb Bio, Inc. (Nov 2026), Bambusa Therapeutics, Inc. (Nov 2026), SOLID BIOSCIENCES INC. (Nov 2026)
Related pages
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