Chen Yajing
SEC CIK 1985694 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| ZLAB | Zai Lab Ltd | CFO | 35.6K | — | $1.12M | 41 | 2023-09-29 | 2026-08-19 |
Most active insiders at ZLAB, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Du Ying | COB, CEO, Dir | — | $8.58M |
| 2 | Edmondson Frazor Titus III | CLO | — | $1.01M |
| 3 | Amado Rafael | See Remarks | — | $675.0K |
| 4 | Lis William | Dir | — | $340.0K |
| 5 | Smiley Joshua L | See Remarks | — | $294.3K |
| 6 | Chen Yajing | CFO | — | $239.3K |
| 7 | GAYNOR RICHARD | Dir | $65.8K | — |
| 8 | Leung Nisa | Dir | — | — |
| 9 | Vounatsos Michel | Dir | — | — |
| 10 | Morrison Scott W | Dir | — | — |
Transactions 41
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T | 2026-08-21 16:16 | 2026-08-19 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale | $27.00 | -260 | 35.6K | -0.7% | -$7,020 |
| D | 2026-08-18 16:16 | 2026-08-14 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +1,250 | 36.3K | +4% | — |
| D | 2026-08-18 16:16 | 2026-08-14 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | F - Tax | $25.90 | -427 | 35.9K | -1% | -$11.1K |
| T | 2026-08-13 16:15 | 2026-08-11 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale | $25.00 | -619 | 35.1K | -2% | -$15.5K |
| D | 2026-06-29 16:17 | 2026-06-25 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +6,250 | 38.0K | +20% | — |
| D | 2026-06-29 16:17 | 2026-06-26 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $17.46 | -2,264 | 35.7K | -6% | -$39.5K |
| 2026-04-08 19:33 | 2026-04-06 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale | $20.45 | -853 | 31.7K | -3% | -$17.4K | |
| DM | 2026-04-03 17:57 | 2026-04-01+ | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +17.8K | 37.8K | +89% | — |
| D | 2026-04-03 17:57 | 2026-04-02 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $20.39 | -5,199 | 32.6K | -14% | -$106.0K |
| D | 2026-03-16 | 2026-03-13 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $18.63 | -1,703 | 20.0K | -8% | -$31.7K |
| D | 2026-03-16 | 2026-03-12 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +4,258 | 21.7K | +24% | — |
| D | 2025-11-04 | 2025-11-03 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $26.83 | -240 | 17.4K | -1% | -$6,439 |
| D | 2025-11-04 | 2025-10-31 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +500 | 17.7K | +3% | — |
| D | 2025-10-03 | 2025-10-02 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $34.25 | -456 | 17.2K | -3% | -$15.6K |
| D | 2025-10-03 | 2025-10-01 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +920 | 17.6K | +6% | — |
| DT | 2025-08-18 | 2025-08-14 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +1,250 | 18.2K | +7% | — |
| DMT | 2025-08-18 | 2025-08-15 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $35.42 | -1,438 | 17.5K | -8% | -$50.9K |
| T | 2025-08-12 | 2025-08-08 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale | $34.01 | -4,096 | 16.9K | -20% | -$139.3K |
| D | 2025-06-27 | 2025-06-25 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +6,250 | 23.7K | +36% | — |
| D | 2025-06-27 | 2025-06-26 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $36.13 | -2,675 | 21.0K | -11% | -$96.6K |
| T | 2025-06-04 | 2025-06-02 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale | $30.00 | -9,618 | 17.4K | -36% | -$288.5K |
| D | 2025-04-07 | 2025-04-03 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +2,500 | 28.0K | +10% | — |
| D | 2025-04-07 | 2025-04-04 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $33.11 | -924 | 27.0K | -3% | -$30.6K |
| D | 2025-04-03 | 2025-04-02 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $35.89 | -5,280 | 25.5K | -17% | -$189.5K |
| DM | 2025-04-03 | 2025-04-01 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +15.3K | 30.8K | +98% | — |
| D | 2024-11-05 | 2024-11-01 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +500 | 15.7K | +3% | — |
| D | 2024-11-05 | 2024-11-04 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $30.66 | -167 | 15.5K | -1% | -$5,120 |
| D | 2024-10-03 | 2024-10-01 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +920 | 15.5K | +6% | — |
| D | 2024-10-03 | 2024-10-02 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $25.40 | -301 | 15.2K | -2% | -$7,645 |
| D | 2024-08-16 | 2024-08-14 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +1,250 | 15.0K | +9% | — |
| D | 2024-08-16 | 2024-08-15 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $16.06 | -422 | 14.5K | -3% | -$6,777 |
| D | 2024-06-27 | 2024-06-25 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +6,250 | 15.9K | +65% | — |
| D | 2024-06-27 | 2024-06-26 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $17.90 | -2,154 | 13.7K | -14% | -$38.6K |
| D | 2024-04-05 | 2024-04-04 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $15.67 | -845 | 9,618 | -8% | -$13.2K |
| D | 2024-04-05 | 2024-04-03 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | $15.90 | +2,500 | 10.5K | +31% | +$39.8K |
| D | 2024-04-03 | 2024-04-02 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $16.15 | -519 | 7,963 | -6% | -$8,382 |
| D | 2024-04-03 | 2024-04-01 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | $16.72 | +1,500 | 8,482 | +21% | +$25.1K |
| D | 2023-11-03 | 2023-11-01 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +500 | 7,147 | +8% | — |
| D | 2023-11-03 | 2023-11-02 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | S - Sale+OE | $25.23 | -165 | 6,982 | -2% | -$4,163 |
| D | 2023-10-03 | 2023-09-29 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | M - OptEx | — | +920 | 6,954 | +15% | — |
| D | 2023-10-03 | 2023-09-29 | ZLAB | Zai Lab Ltd | Chen Yajing | CFO | F - Tax | $24.31 | -307 | 6,647 | -4% | -$7,463 |
Purchase Sale Sale after option exercise All abbreviations