The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Du Ying since 2021.
This trader's CIK number is 1731790.
At the time of last reporting, Du Ying was the Chairperson & CEO of Zai Lab Ltd. (stock ticker symbol ZLAB).
Also see all insider trading activities at Zai Lab Ltd.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | ZLAB | 0 | $0 | 635,577 | $20,891,690 | 1,309,261 | $1,078,749 |
| 2024 | ZLAB | 0 | $0 | 45,119 | $863,472 | 122,557 | $237,423 |
| 2023 | ZLAB | 0 | $0 | 0 | $0 | 373,000 | $1,959,932 |
| 2022 | ZLAB | 0 | $0 | 0 | $0 | 3,400 | $0 |
| 2021 | ZLAB | 0 | $0 | 666,667 | $103,872,902 | 444,444 | $266,664 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-29 | ZLAB | Option Ex | 604,376 | 1.20 | 725,251 |
| 2025-08-12 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-08-13 | ZLAB | Option Ex | 46,387 | .60 | 27,832 |
| 2025-08-12 | ZLAB | Sale | 50,000 | 34.25 | 1,712,549 |
| 2025-08-13 | ZLAB | Sale | 46,387 | 35.47 | 1,645,300 |
| 2025-08-11 | ZLAB | Sale | 50,000 | 34.64 | 1,731,800 |
| 2025-08-11 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-08-08 | ZLAB | Sale | 50,000 | 34.74 | 1,737,150 |
| 2025-08-08 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-07-01 | ZLAB | Option Ex | 18,000 | .00 | 0 |
| 2025-07-02 | ZLAB | Sale | 7,072 | 35.23 | 249,146 |
| 2025-06-30 | ZLAB | Sale | 6,918 | 35.52 | 245,727 |
| 2025-06-27 | ZLAB | Option Ex | 17,970 | .00 | 0 |
| 2025-06-26 | ZLAB | Sale | 23,669 | 36.13 | 855,208 |
| 2025-06-25 | ZLAB | Option Ex | 58,800 | .00 | 0 |
| 2025-05-14 | ZLAB | Sale | 46,389 | 28.45 | 1,319,952 |
| 2025-05-13 | ZLAB | Sale | 50,000 | 28.73 | 1,436,300 |
| 2025-05-14 | ZLAB | Option Ex | 46,389 | .60 | 27,833 |
| 2025-05-13 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-05-09 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-05-09 | ZLAB | Sale | 50,000 | 29.87 | 1,493,600 |
| 2025-05-12 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-05-12 | ZLAB | Sale | 50,000 | 29.68 | 1,483,950 |
| 2025-04-04 | ZLAB | Sale | 2,945 | 33.11 | 97,503 |
| 2025-04-03 | ZLAB | Option Ex | 6,750 | .00 | 0 |
| 2025-04-01 | ZLAB | Option Ex | 14,200 | .00 | 0 |
| 2025-04-02 | ZLAB | Sale | 5,808 | 35.89 | 208,472 |
| 2025-03-04 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-03-05 | ZLAB | Option Ex | 46,389 | .60 | 27,833 |
| 2025-03-04 | ZLAB | Sale | 50,000 | 33.41 | 1,670,450 |
| 2025-03-05 | ZLAB | Sale | 46,389 | 35.52 | 1,647,783 |
| 2025-02-28 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-02-28 | ZLAB | Sale | 50,000 | 34.39 | 1,719,500 |
| 2025-03-03 | ZLAB | Option Ex | 50,000 | .60 | 30,000 |
| 2025-03-03 | ZLAB | Sale | 50,000 | 32.75 | 1,637,300 |
| 2024-06-28 | ZLAB | Option Ex | 17,970 | .00 | 0 |
| 2024-07-01 | ZLAB | Sale | 7,013 | 17.48 | 122,573 |
| 2024-06-25 | ZLAB | Option Ex | 58,800 | .00 | 0 |
| 2024-06-26 | ZLAB | Sale | 23,939 | 17.90 | 428,532 |
| 2024-04-02 | ZLAB | Sale | 5,787 | 16.15 | 93,465 |
| 2024-04-01 | ZLAB | Option Ex | 14,200 | 16.72 | 237,423 |
| 2024-01-03 | ZLAB | Sale | 8,380 | 26.12 | 218,902 |
| 2024-01-01 | ZLAB | Option Ex | 31,587 | .00 | 0 |
| 2023-06-23 | ZLAB | Option Ex | 58,800 | 25.30 | 1,487,640 |
| 2023-03-31 | ZLAB | Option Ex | 14,200 | 33.26 | 472,292 |
| 2023-03-06 | ZLAB | Option Ex | 300,000 | .00 | 0 |
| 2022-04-01 | ZLAB | Option Ex | 3,400 | .00 | 0 |
| 2021-09-07 | ZLAB | Sale | 29,785 | 149.07 | 4,440,139 |
| 2021-09-03 | ZLAB | Sale | 24,145 | 145.26 | 3,507,254 |
| 2021-09-02 | ZLAB | Sale | 28,738 | 146.17 | 4,200,633 |
| 2021-09-01 | ZLAB | Sale | 28,443 | 146.76 | 4,174,209 |
| 2021-09-01 | ZLAB | Option Ex | 111,111 | .60 | 66,666 |
| 2021-08-02 | ZLAB | Option Ex | 111,111 | .60 | 66,666 |
| 2021-08-02 | ZLAB | Sale | 84,894 | 142.91 | 12,132,456 |
| 2021-08-03 | ZLAB | Sale | 26,217 | 145.46 | 3,813,419 |
| 2021-07-01 | ZLAB | Option Ex | 111,111 | .60 | 66,666 |
| 2021-07-01 | ZLAB | Sale | 83,858 | 176.57 | 14,807,058 |
| 2021-07-02 | ZLAB | Sale | 27,253 | 176.28 | 4,804,158 |
| 2021-06-01 | ZLAB | Sale | 101,648 | 176.30 | 17,920,542 |
| 2021-06-01 | ZLAB | Option Ex | 111,111 | .60 | 66,666 |
| 2021-06-02 | ZLAB | Sale | 9,463 | 177.80 | 1,682,549 |
| 2021-05-03 | ZLAB | Sale | 62,164 | 163.16 | 10,142,802 |
| 2021-05-04 | ZLAB | Sale | 48,947 | 162.49 | 7,953,593 |
| 2021-04-05 | ZLAB | Sale | 50,784 | 128.28 | 6,514,723 |
| 2021-04-06 | ZLAB | Sale | 38,392 | 126.37 | 4,851,635 |
| 2021-04-07 | ZLAB | Sale | 21,936 | 133.47 | 2,927,732 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Du Ying (Chairperson & CEO of Zai Lab Ltd at the time of this reporting) see the Securities and Exchange Commission (SEC) website.