Yajing Chen sold $51k of ZLAB
Chief Financial Officer at Zai Lab Ltd. 1,438 shares at an average of $35.42, traded Aug 15, 2025, filed Aug 18, 2025.
Score components
- +22RoleCFO
- +7Trade size$51k at market
- 0Share of holdings soldSold 7.9% of holdings
- +15Cluster5 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -8.7%, 3m -41.4%, 6m -43.9%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0000905148-25-003036, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 14, 2025 | MOption exercise American Depositary Shares10b5-1 | +1,250 | - | - | 18,158 | Aug 18, 2025 |
| Aug 15, 2025 | SOpen-market sale American Depositary Shares10b5-1 | -610 | $35.27 | $22k | 17,548 | Aug 18, 2025 |
| Aug 15, 2025 | SOpen-market sale American Depositary Shares10b5-1 | -828 | $35.53 | $29k | 16,720 | Aug 18, 2025 |
| Aug 14, 2025 | MOption exercise Restricted Share Unitsderivative10b5-1 | -1,250 | $0.00 | $0 | 2,500 | Aug 18, 2025 |
Related signals
Other insiders at Zai Lab Ltd and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 10Weak | Zai Lab Ltd | Yajing Chen Chief Financial Officer | $7,020 260 shares | -1% | |
| 10Weak | Zai Lab Ltd | Yajing Chen Chief Financial Officer | $15k 619 shares | -2% | |
| 20Weak | Zai Lab Ltd | William Lis director | $213k 8,506 shares | -17% | |
| 14Weak | Zai Lab Ltd | Richard Gaynor director | $33k 1,736 shares | +2% | |
| 36Weak | Zai Lab Ltd | Ying Du Chairperson & CEO | $130k 7,026 shares | -1% | |
| 28Weak | Zai Lab Ltd | Yajing Chen Chief Financial Officer | $40k 2,264 shares | -6% | |
| 42Moderate | Zai Lab Ltd | Ying Du Chairperson & CEO | $429k 24,543 shares | -2% | |
| 28Weak | Zai Lab Ltd | Frazor Titus Edmondson III Chief Legal Officer | $72k 4,103 shares | -12% | |
| 26Weak | Zai Lab Ltd | William Lis director | $127k 7,040 shares | -12% | |
| 23Weak | Zai Lab Ltd | Ying Du Chairperson & CEO | $2.0M 100,000 shares | -9% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.