ZLAB
Zai Lab Ltd
Customer concentration
— top customer 25% of receivables
One customer — 25% of receivables (As of March 31, 2026)
“As of March 31, 2026, our largest customer accounted for approximately 25% of our total accounts receivable collectively.”
Company with tickers: ZLAB
CIK
1704292
CUSIP
98887Q104
Shares Outstanding
112,354,858
Website
https://www.zailaboratory.com
13F Activity (30d)
11 filings
7 filers
Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.
| Filed | Seller | Relationship | Shares | Approx. Sale | Broker |
|---|---|---|---|---|---|
| 2026-05-18 | Du Ying | Officer, Director | 50,000 | 2026-05-18 | Fidelity Brokerage Services LLC |
| 2026-05-15 | Du Ying | Officer, Director | 50,000 | 2026-05-15 | Fidelity Brokerage Services LLC |
| 2026-05-14 | Edmondson Frazor Titus III | Officer | 3,517 | 2026-05-14 | Fidelity Brokerage Services LLC |
| 2026-05-14 | Du Ying | Officer, Director | 50,000 | 2026-05-14 | Fidelity Brokerage Services LLC |
| 2026-05-13 | Du Ying | Officer, Director | 50,000 | 2026-05-13 | Fidelity Brokerage Services LLC |
| 2026-04-06 | Du Ying | Officer, Director | 2,653 | 2026-04-06 | Fidelity Brokerage Services LLC |
| 2026-04-06 | Smiley Joshua L | Officer | 3,017 | 2026-04-06 | Fidelity Brokerage Services LLC |
| 2026-04-06 | Chen Yajing | Officer | 853 | 2026-04-06 | Fidelity Brokerage Services LLC |
| 2026-04-06 | Amado Rafael | Officer | 2,739 | 2026-04-06 | Fidelity Brokerage Services LLC |
| 2026-04-06 | Edmondson Frazor Titus III | Officer | 1,224 | 2026-04-06 | Fidelity Brokerage Services LLC |
| 2026-04-02 | Edmondson Frazor Titus III | Officer | 4,194 | 2026-04-02 | Fidelity Brokerage Services LLC |
| 2026-04-02 | Smiley Joshua L | Officer | 9,614 | 2026-04-02 | Fidelity Brokerage Services LLC |
| 2026-04-02 | Chen Yajing | Officer | 5,199 | 2026-04-02 | Fidelity Brokerage Services LLC |
| 2026-04-02 | Du Ying | Officer, Director | 5,576 | 2026-04-02 | Fidelity Brokerage Services LLC |
| 2026-04-02 | Amado Rafael | Officer | 9,910 | 2026-04-02 | Fidelity Brokerage Services LLC |
| 2026-03-13 | Amado Rafael | Officer | 2,957 | 2026-03-13 | Fidelity Brokerage Services LLC |
| 2026-03-13 | Edmondson Frazor Titus III | Officer | 1,281 | 2026-03-13 | Fidelity Brokerage Services LLC |
| 2026-03-13 | Chen Yajing | Officer | 1,703 | 2026-03-13 | Fidelity Brokerage Services LLC |
| 2026-03-13 | Smiley Joshua L | Officer | 1,966 | 2026-03-13 | Fidelity Brokerage Services LLC |
| 2026-03-11 | Du Ying | Officer, Director | 1,067 | 2026-03-11 | Fidelity Brokerage Services LLC |
| 2026-03-09 | Du Ying | Officer, Director | 50,000 | 2026-03-09 | Fidelity Brokerage Services LLC |
| 2026-03-06 | Du Ying | Officer, Director | 50,000 | 2026-03-06 | Fidelity Brokerage Services LLC |
| 2026-03-05 | Edmondson Frazor Titus III | Officer | 15,569 | 2026-03-05 | Fidelity Brokerage Services LLC |
| 2026-03-05 | Du Ying | Officer, Director | 50,000 | 2026-03-05 | Fidelity Brokerage Services LLC |
| 2026-03-04 | Du Ying | Officer, Director | 50,000 | 2026-03-04 | Fidelity Brokerage Services LLC |
| 2026-03-03 | Amado Rafael | Officer | 10,000 | 2026-03-03 | Fidelity Brokerage Services LLC |
| 2025-12-31 | Amado Rafael | Officer | 10,787 | 2025-12-31 | Fidelity Brokerage Services LLC |
| 2025-12-16 | Edmondson Frazor Titus III | Officer | 8,651 | 2025-12-16 | Fidelity Brokerage Services LLC |
| 2025-11-21 | Edmondson Frazor Titus III | Officer | 14,328 | 2025-11-21 | Fidelity Brokerage Services LLC |
| 2025-11-03 | Chen Yajing | Officer | 240 | 2025-11-03 | Fidelity Brokerage Services LLC |
| 2025-10-02 | Chen Yajing | Officer | 456 | 2025-10-02 | Fidelity Brokerage Services LLC |
| 2025-08-18 | Edmondson Frazor Titus III | Officer | 1,883 | 2025-08-18 | Fidelity Brokerage Services LLC |
| 2025-08-18 | Smiley Joshua L | Officer | 6,641 | 2025-08-18 | Fidelity Brokerage Services LLC |
| 2025-08-15 | Chen Yajing | Officer | 828 | 2025-08-15 | Fidelity Brokerage Services LLC |
| 2025-08-15 | Chen Yajing | Officer | 610 | 2025-08-15 | Fidelity Brokerage Services LLC |
| 2025-08-13 | Du Ying | Officer, Director | 46,387 | 2025-08-13 | Fidelity Brokerage Services LLC |
| 2025-08-12 | Du Ying | Officer, Director | 50,000 | 2025-08-12 | Fidelity Brokerage Services LLC |
| 2025-08-11 | Du Ying | Officer, Director | 50,000 | 2025-08-11 | Fidelity Brokerage Services LLC |
| 2025-08-08 | Du Ying | Officer, Director | 50,000 | 2025-08-08 | Fidelity Brokerage Services LLC |
| 2025-08-08 | Chen Yajing | Officer | 4,096 | 2025-08-08 | Fidelity Brokerage Services LLC |
| 2025-08-08 | Amado Rafael | Officer | 3,000 | 2025-08-08 | Fidelity Brokerage Services LLC |
| 2025-07-02 | Du Ying | Officer, Director | 7,072 | 2025-07-02 | Fidelity Brokerage Services LLC |
| 2025-06-30 | Du Ying | Officer, Director | 6,918 | 2025-06-30 | Fidelity Brokerage Services LLC |
| 2025-06-26 | Du Ying | Officer, Director | 23,669 | 2025-06-26 | Fidelity Brokerage Services LLC |
| 2025-06-26 | Chen Yajing | Officer | 2,675 | 2025-06-26 | Fidelity Brokerage Services LLC |
| 2025-06-26 | Edmondson Frazor Titus III | Officer | 5,877 | 2025-06-26 | Fidelity Brokerage Services LLC |
| 2025-06-20 | Lis William | Director | 13,814 | 2025-06-20 | Fidelity Brokerage Services LLC |
| 2025-06-02 | Chen Yajing | Officer | 9,618 | 2025-06-02 | Fidelity Brokerage Services LLC |
| 2025-05-14 | Du Ying | Officer, Director | 46,389 | 2025-05-14 | Fidelity Brokerage Services LLC |
| 2025-05-13 | Du Ying | Officer, Director | 50,000 | 2025-05-13 | Fidelity Brokerage Services LLC |
Showing 1–50 of 107 filings