Du Ying Insider Trading Activity
Du Ying has been net-selling over the last 12 months with 0 purchases and 17 sales across 1 company.
ZLAB is the most-traded position with 17 trades. The largest single transaction was a sale of ZLAB for $1.7M on Aug 8, 2025.
Performance Scorecard
Forward stock performance after each transaction by Du Ying. 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 | — | +1.3% | 45% | 20 |
| 90 days | — | +16.4% | 100% | 15 |
| 120 days | — | +20.5% | 77% | 13 |
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 | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
May 18, 2026 | ZLAB | Sell | 50,000 | $19.00 | $950K | −4.3% | CEO | |
May 15, 2026 | ZLAB | Sell | 50,000 | $20.74 | $1.0M | −4.3% | CEO | |
May 14, 2026 | ZLAB | Sell | 50,000 | $20.09 | $1.0M | −4.3% | CEO | |
May 13, 2026 | ZLAB | Sell | 16,231 | $19.44 | $316K | −1.4% | CEO | |
May 13, 2026 | ZLAB | Sell | 33,769 | $20.22 | $683K | −2.9% | CEO | |
Apr 6, 2026 | ZLAB | Sell | 2,653 | $20.45 | $54K | −0.2% | CEO | |
Apr 2, 2026 | ZLAB | Sell | 5,576 | $20.39 | $114K | −0.5% | CEO | |
Mar 11, 2026 | ZLAB | Sell | 1,067 | $19.08 | $20K | −0.1% | CEO | |
Mar 9, 2026 | ZLAB | Sell | 50,000 | $19.03 | $951K | −4.9% | CEO | |
Mar 6, 2026 | ZLAB | Sell | 50,000 | $19.42 | $971K | −4.9% | CEO | |
Mar 5, 2026 | ZLAB | Sell | 50,000 | $19.22 | $961K | −4.9% | CEO | |
Mar 4, 2026 | ZLAB | Sell | 14,290 | $18.78 | $268K | −1.4% | CEO | |
Mar 4, 2026 | ZLAB | Sell | 35,710 | $19.32 | $690K | −3.6% | CEO | |
Aug 13, 2025 | ZLAB | Sell | 46,387 | $35.47 | $1.6M | −8.0% | CEO | |
Aug 12, 2025 | ZLAB | Sell | 50,000 | $34.25 | $1.7M | −8.5% | CEO | |
Aug 11, 2025 | ZLAB | Sell | 50,000 | $34.64 | $1.7M | −8.5% | CEO | |
Aug 8, 2025 | ZLAB | Sell | 50,000 | $34.74 | $1.7M | −8.5% | CEO | |
Jul 2, 2025 | ZLAB | Sell | 7,072 | $35.23 | $249K | −1.3% | CEO | |
Jun 30, 2025 | ZLAB | Sell | 6,918 | $35.52 | $246K | −1.3% | CEO | |
Jun 26, 2025 | ZLAB | Sell | 23,669 | $36.13 | $855K | −4.4% | CEO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| ZLAB | Zai Lab Ltd | 20 | $16.2M |
Other insiders at Zai Lab Ltd
4 other tracked filers at ZLAB.