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sellWeak cluster of 4

Ying Du sold $246k of ZLAB

Chairperson & CEO at Zai Lab Ltd. 6,918 shares at an average of $35.52, traded Jun 30, 2025, filed Jul 1, 2025.

Warning score
38
Value
$246k
6,918 shares
Holdings after
526,034
-1% from before
From 52-week low
+72%
low $20.34, close $34.97
From 52-week high
-19%
high $43.03, as of Jun 30, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $246k at market
    +13
  • Share of holdings sold
    Sold 1.3% of holdings
    0
  • Cluster
    4 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 Jul 1, 2025: -28.9%SPY +27.8% · excess -56.7%

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 0000905148-25-002291, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jun 27, 2025MOption exercise
American Depositary Shares
+17,970--532,952Jul 1, 2025
Jun 30, 2025SOpen-market sale
American Depositary Shares
-6,918$35.52$246k526,034Jul 1, 2025
Jun 27, 2025MOption exercise
Restricted Share Unitsderivative
-17,970$0.00$035,940Jul 1, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
22Weak
ZLABsell
Zai Lab Ltd
Rafael Amado
See Remarks
$56k
2,739 shares
-5%
17Weak
ZLABsell
Zai Lab Ltd
Rafael Amado
See Remarks
$202k
9,910 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%
5Weak
ZLABsell 510b5-1
Zai Lab Ltd
Ying Du
Chairperson & CEO
$20k
1,067 shares
-0%
30Weak
ZLABsell 510b5-1
Zai Lab Ltd
Ying Du
Chairperson & CEO
$1.9M
100,000 shares
-10%
30Weak
ZLABsell 510b5-1
Zai Lab Ltd
Ying Du
Chairperson & CEO
$1.9M
100,000 shares
-10%

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 $246k of ZLAB | InsiderTell