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sellWeak cluster of 5

Joshua L Smiley sold $37k of ZLAB

See Remarks at Zai Lab Ltd. 1,966 shares at an average of $18.63, traded Mar 13, 2026, filed Mar 16, 2026.

Warning score
21
Value
$37k
1,966 shares
Holdings after
91,026
-2% from before
From 52-week low
+13%
low $16.30, close $18.37
From 52-week high
-57%
high $43.03, as of Mar 13, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $37k at market
    +6
  • Share of holdings sold
    Sold 2.1% of holdings
    0
  • Cluster
    5 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15

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.

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.

ZLABOct 9, 2026 · close 24.99
Since filing Mar 16, 2026: +31.1%SPY +17.3% · excess +13.8%

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 0000905148-26-001286, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 12, 2026MOption exercise
American Depositary Shares
+6,388--92,992Mar 16, 2026
Mar 13, 2026SOpen-market sale
American Depositary Shares
-1,966$18.63$37k91,026Mar 16, 2026
Mar 4, 2026AGrant or award
Stock Options (Right to Buy)derivative
+103,950$0.00$0103,950Mar 16, 2026
Mar 4, 2026AGrant or award
Restricted Share Unitsderivative
+33,783$0.00$033,783Mar 16, 2026
Mar 12, 2026MOption exercise
Restricted Share Unitsderivative
-6,388$0.00$019,165Mar 16, 2026

Related signals

Other insiders at Zai Lab Ltd and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
13Weak
ZLABsell
Zai Lab Ltd
Yajing Chen
Chief Financial Officer
$40k
2,264 shares
-6%
30Weak
ZLABsell 2
Zai Lab Ltd
Rafael Amado
See Remarks
$56k
2,739 shares
-5%
30Weak
ZLABsell 2
Zai Lab Ltd
Yajing Chen
Chief Financial Officer
$17k
853 shares
-3%
25Weak
ZLABsell 2
Zai Lab Ltd
Rafael Amado
See Remarks
$202k
9,910 shares
-14%
30Weak
ZLABsell 2
Zai Lab Ltd
Yajing Chen
Chief Financial Officer
$106k
5,199 shares
-14%
14Weak
ZLABbuy10b5-1
Zai Lab Ltd
Richard Gaynor
director
$33k
1,731 shares
+3%
22Weak
ZLABsell 5
Zai Lab Ltd
Rafael Amado
See Remarks
$55k
2,957 shares
-6%
27Weak
ZLABsell 5
Zai Lab Ltd
Yajing Chen
Chief Financial Officer
$32k
1,703 shares
-8%
20Weak
ZLABsell 5
Zai Lab Ltd
Frazor Titus Edmondson III
Chief Legal Officer
$24k
1,281 shares
-16%
5Weak
ZLABsell 510b5-1
Zai Lab Ltd
Ying Du
Chairperson & CEO
$20k
1,067 shares
-0%

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.

Joshua L Smiley sold $37k of ZLAB | InsiderTell