Joshua L Smiley bought $289k of ZLAB
See Remarks at Zai Lab Ltd. 10,000 shares at an average of $28.91, traded Sep 10, 2025, filed Sep 12, 2025.
Score components
- +15RoleOfficer
- +14Trade size$289k at market
- +3Relative to holdingsHoldings up 13%
- +8Price context34% below the 52-week high
- 0ClusterNo other insider buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
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.
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 0000905148-25-003326, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 10, 2025 | POpen-market purchase American Depositary Shares | +10,000 | $28.91 | $289k | 86,604 | Sep 12, 2025 |
Related signals
Other insiders at Zai Lab Ltd and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 14Weak | Zai Lab Ltd | Richard Gaynor director | $33k 1,731 shares | +3% | |
| 22Weak | Zai Lab Ltd | Rafael Amado See Remarks | $55k 2,957 shares | -6% | |
| 27Weak | Zai Lab Ltd | Yajing Chen Chief Financial Officer | $32k 1,703 shares | -8% | |
| 20Weak | Zai Lab Ltd | Frazor Titus Edmondson III Chief Legal Officer | $24k 1,281 shares | -16% | |
| 21Weak | Zai Lab Ltd | Joshua L Smiley See Remarks | $37k 1,966 shares | -2% | |
| 5Weak | Zai Lab Ltd | Ying Du Chairperson & CEO | $20k 1,067 shares | -0% | |
| 30Weak | Zai Lab Ltd | Ying Du Chairperson & CEO | $1.9M 100,000 shares | -10% | |
| 30Weak | Zai Lab Ltd | Ying Du Chairperson & CEO | $1.9M 100,000 shares | -10% | |
| 44Moderate | Zai Lab Ltd | Frazor Titus Edmondson III Chief Legal Officer | $297k 15,569 shares | -82% | |
| 26Weak | Zai Lab Ltd | Rafael Amado See Remarks | $174k 10,000 shares | -19% |
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.