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sellWeak cluster of 5

Ying Du sold $98k of ZLAB

Chairperson & CEO at Zai Lab Ltd. 2,945 shares at an average of $33.11, traded Apr 4, 2025, filed Apr 7, 2025.

Warning score
35
Value
$98k
2,945 shares
Holdings after
479,851
-1% from before
From 52-week low
+56%
low $20.34, close $31.77
From 52-week high
-17%
high $38.35, as of Apr 4, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $98k at market
    +10
  • Share of holdings sold
    Sold 0.6% 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 Apr 7, 2025: -13.2%SPY +56.9% · excess -70.2%

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 0000905148-25-001115, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Apr 3, 2025MOption exercise
American Depositary Shares
+6,750--482,796Apr 7, 2025
Apr 4, 2025SOpen-market sale
American Depositary Shares
-2,945$33.11$98k479,851Apr 7, 2025
Apr 3, 2025MOption exercise
Restricted Share Unitsderivative
-6,750$0.00$020,250Apr 7, 2025

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%
21Weak
ZLABsell 5
Zai Lab Ltd
Joshua L Smiley
See Remarks
$37k
1,966 shares
-2%

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.

Ying Du sold $98k of ZLAB | InsiderTell