Zai Lab Limited
Zai Lab Limited (ZLAB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ZLAB · as of Sep 30, 2025
Ownership Breakdown
145
Institutional Holders
▼ 18 vs Q2
$1.19B
Total Inst. Value
▼ $298.39M vs Q2
112.28M
Shares Outstanding
freeFloat 98.56%
35.16M
13F Shares Held
▼ 7.45M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ZLAB largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
CAPITAL WORLD INVESTORS pharmaceutical preparations | 6.08M | 5.57% | 5.57% | $205.97B | Nov 13, 2025 | ▲ 41.5K |
FMR LLC pharmaceutical preparations | 4.70M | 4.31% | 4.31% | $159.34B | Nov 13, 2025 | ▼ 1.50M |
CLEARBRIDGE INVESTMENTS, LLC pharmaceutical preparations | 3.52M | 3.22% | 3.22% | $119.27B | Nov 13, 2025 | ▼ 492.6K |
RTW INVESTMENTS, LP pharmaceutical preparations | 2.29M | 2.10% | 2.10% | $77.65B | Nov 14, 2025 | ▼ 3.25M |
JANUS HENDERSON GROUP PLC pharmaceutical preparations | 2.05M | 1.88% | 1.88% | $69.49B | Nov 14, 2025 | ▼ 148.3K |
WELLINGTON MANAGEMENT GROUP LLP pharmaceutical preparations | 1.72M | 1.57% | 1.57% | $58.24B | Nov 14, 2025 | ▲ 341.5K |
FRAZIER LIFE SCIENCES MANAGEMENT, L.P. pharmaceutical preparations | 1.63M | 1.49% | 1.49% | $55.15B | Nov 14, 2025 | ▲ 319.2K |
BAMCO INC /NY/ pharmaceutical preparations | 1.37M | 1.26% | 1.26% | $46.47B | Nov 14, 2025 | ▼ 216.6K |
CITADEL ADVISORS LLC pharmaceutical preparations | 987.0K | 90.39% | 90.39% | $33.45B | Nov 14, 2025 | ▲ 620.8K |
PRICE T ROWE ASSOCIATES INC /MD/ pharmaceutical preparations | 948.7K | 86.88% | 86.88% | $32.15B | Nov 14, 2025 | ▲ 795.6K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
24
Increased
+3.19M shares3
New Positions
first time holders18
Decreased
−7.06M shares0
Sold Out
fully exitedNet shares change (top 50)
3.88M
+3.19M / −7.06M
Net new holders
+9
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ZLAB insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
17
Buy transactions
39
Sell transactions
0.44
Buy/Sell ratio
$1M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Wang Yizhe Operating Partner | May 11, 2026 | Award | 136,819 | $20.32 | $2.78M | 136.8K | Form 4 ↗ |
Wang Yizhe Operating Partner | May 11, 2026 | Award | 59,288 | — | — | 59.3K | Form 4 ↗ |
Du Ying Chairperson & CEO | May 26, 2026 | Gift | 19,857 | — | — | 1.25M | Form 4 ↗ |
Du Ying Chairperson & CEO | May 27, 2026 | Gift | 33,993 | — | — | 1.21M | Form 4 ↗ |
Du Ying Chairperson & CEO | May 27, 2026 | Gift | 53,850 | — | — | 1.16M | Form 4 ↗ |
Du Ying Chairperson & CEO | May 19, 2026 | Tax Withhold | 117,435 | $18.75 | $2.20M | 1.27M | Form 4 ↗ |
Du Ying Chairperson & CEO | May 15, 2026 | Sale | 50,000 | $20.74 | $1.04M | 1.12M | Form 4 ↗ |
Du Ying Chairperson & CEO | May 18, 2026 | Sale | 50,000 | $19.00 | $949.8K | 1.12M | Form 4 ↗ |
Edmondson Frazor Titus III Chief Legal Officer | May 14, 2026 | Sale | 3,517 | $20.19 | $71.0K | 19.8K | Form 4 ↗ |
Du Ying Chairperson & CEO | May 13, 2026 | Sale | 16,231 | $19.44 | $315.6K | 1.16M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Zai Lab Limited (ZLAB) is primarily owned by institutional investors, who hold approximately 31.3% of total shares outstanding. Company insiders own approximately 1.44%, while retail and public investors account for the remaining 67.24%.
The largest institutional shareholder of Zai Lab Limited is CAPITAL WORLD INVESTORS, holding approximately 6.08 million shares — equal to 5.57% of outstanding shares — as of September 30, 2025.
A total of 145 institutional investors currently hold ZLAB stock, with a combined institutional value of approximately $1.19 billion as of the most recent 13F filing period.
Frequently asked questions
ZLAB ownershipZai Lab Limited (ZLAB) is primarily owned by institutional investors, who hold approximately 31.3% of shares. The largest shareholder is CAPITAL WORLD INVESTORS with a 5.57% stake. Company insiders hold 1.44%. Data sourced from SEC Form 13F as of September 30, 2025.