Chen Yajing Insider Trading Activity
Chen Yajing has been net-selling over the last 12 months with 0 purchases and 9 sales across 1 company.
ZLAB is the most-traded position with 9 trades. The largest single transaction was a sale of ZLAB for $139K on Aug 8, 2025.
Performance Scorecard
Forward stock performance after each transaction by Chen Yajing. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | +2.9% | 50% | 10 |
| 90 days | — | +28.0% | 86% | 7 |
| 120 days | — | +35.1% | 86% | 7 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersZLAB · Zai Lab Ltd
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| Apr 6, 2026 | ZLAB | Sell | 853 | $20.45 | $17K | CFO |
| Apr 2, 2026 | ZLAB | Sell | 5,199 | $20.39 | $106K | CFO |
| Mar 13, 2026 | ZLAB | Sell | 1,703 | $18.63 | $32K | CFO |
| Nov 3, 2025 | ZLAB | Sell | 240 | $26.83 | $6K | CFO |
| Oct 2, 2025 | ZLAB | Sell | 456 | $34.25 | $16K | CFO |
| Aug 15, 2025 | ZLAB | Sell | 610 | $35.27 | $22K | CFO |
| Aug 15, 2025 | ZLAB | Sell | 828 | $35.53 | $29K | CFO |
| Aug 8, 2025 | ZLAB | Sell | 4,096 | $34.01 | $139K | CFO |
| Jun 26, 2025 | ZLAB | Sell | 2,675 | $36.13 | $97K | CFO |
| Jun 2, 2025 | ZLAB | Sell | 9,618 | $30.00 | $289K | CFO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| ZLAB | Zai Lab Ltd | 10 | $753K |
Other insiders at Zai Lab Ltd
4 other tracked filers at ZLAB.