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sellWeak cluster of 410b5-1 plan

Ying Du sold $3.3M of ZLAB

Chairperson & CEO at Zai Lab Ltd. 96,389 shares at an average of $34.48, traded Mar 4, 2025, filed Mar 6, 2025.

Warning score
35
Value
$3.3M
96,389 shares
Holdings after
494,117
-18% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    CEO
    +25
  • Trade size
    $3.3M at market
    +25
  • Share of holdings sold
    Sold 18% of holdings
    +5
  • Cluster
    4 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

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 -10.2%, 3m +3.3%, 6m -15.2%.

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 6, 2025: -29.4%SPY +38.6% · excess -68.0%

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 0000905148-25-000872, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 4, 2025MOption exercise
American Depositary Shares10b5-1
+50,000$0.60$30k544,117Mar 6, 2025
Mar 4, 2025SOpen-market sale
American Depositary Shares10b5-1
-6,665$32.69$218k537,452Mar 6, 2025
Mar 4, 2025SOpen-market sale
American Depositary Shares10b5-1
-37,752$33.55$1.3M499,700Mar 6, 2025
Mar 4, 2025SOpen-market sale
American Depositary Shares10b5-1
-5,583$33.99$190k494,117Mar 6, 2025
Mar 5, 2025MOption exercise
American Depositary Shares10b5-1
+46,389$0.60$28k540,506Mar 6, 2025
Mar 5, 2025SOpen-market sale
American Depositary Shares10b5-1
-21,093$35.20$742k519,413Mar 6, 2025
Mar 5, 2025SOpen-market sale
American Depositary Shares10b5-1
-25,296$35.84$907k494,117Mar 6, 2025
Mar 4, 2025MOption exercise
Stock Options (Right to Buy)derivative10b5-1
-50,000$0.00$0439,165Mar 6, 2025
Mar 5, 2025MOption exercise
Stock Options (Right to Buy)derivative10b5-1
-46,389$0.00$0392,776Mar 6, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
28Weak
ZLABsell 3
Zai Lab Ltd
Yajing Chen
Chief Financial Officer
$40k
2,264 shares
-6%
42Moderate
ZLABsell 3
Zai Lab Ltd
Ying Du
Chairperson & CEO
$429k
24,543 shares
-2%
28Weak
ZLABsell 3
Zai Lab Ltd
Frazor Titus Edmondson III
Chief Legal Officer
$72k
4,103 shares
-12%
23Weak
ZLABsell 210b5-1
Zai Lab Ltd
Ying Du
Chairperson & CEO
$2.0M
100,000 shares
-9%
23Weak
ZLABsell 210b5-1
Zai Lab Ltd
Ying Du
Chairperson & CEO
$2.0M
100,000 shares
-9%
16Weak
ZLABsell 210b5-1
Zai Lab Ltd
Frazor Titus Edmondson III
Chief Legal Officer
$71k
3,517 shares
-15%
37Weak
ZLABsell 4
Zai Lab Ltd
Rafael Amado
See Remarks
$56k
2,739 shares
-5%
37Weak
ZLABsell 4
Zai Lab Ltd
Yajing Chen
Chief Financial Officer
$17k
853 shares
-3%
47Moderate
ZLABsell 4
Zai Lab Ltd
Ying Du
Chairperson & CEO
$54k
2,653 shares
-0%
35Weak
ZLABsell 4
Zai Lab Ltd
Frazor Titus Edmondson III
Chief Legal Officer
$25k
1,224 shares
-5%

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 $3.3M of ZLAB | InsiderTell