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sellWeak cluster of 2

Cong Claire Xu sold $2,593 of NBP

EVP, Clinical Development at NovaBridge Biosciences. 3,282 shares at an average of $0.79, traded Aug 31, 2026, filed Sep 1, 2026.

Warning score
8
Value
$2,593
3,282 shares
Holdings after
304,201
-1% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Officer
    +15
  • Trade size
    $3k at market
    0
  • Share of holdings sold
    Sold 1.1% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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.

NBPOct 12, 2026 · close 1.32
Since filing Sep 1, 2026: -23.7%SPY +2.4% · excess -26.1%

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 0002114309-26-000007, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 30, 2026MOption exercise
Ordinary Shares
+9,382--307,48344 d ago
Aug 31, 2026SOpen-market sale
Ordinary Shares
-3,282$0.79$2,593304,20144 d ago
Aug 30, 2026MOption exercise
Restricted Share Unitsderivative
-4,079$0.00$028,55844 d ago

Related signals

Other insiders at NovaBridge Biosciences and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
8Weak
NBPsell 2
NovaBridge Biosciences
Phillip Andrew Dennis
Chief Medical Officer
$5,828
8,209 shares
-5%
49Moderate
NBPsell 3
NovaBridge Biosciences
Sean Wuxiong Cao
Chief Bus. Development Officer
$80k
107,978 shares
-29%
0Weak
NBPsell
NovaBridge Biosciences
Cong Claire Xu
SVP, Clinical Development
$3,992
4,485 shares
-1%
0Weak
NBPsell
NovaBridge Biosciences
Phillip Andrew Dennis
Chief Medical Officer
$5,606
8,494 shares
-5%
0Weak
NBPsell
NovaBridge Biosciences
Cong Claire Xu
SVP, Clinical Development
$14k
3,494 shares
-1%
31Weak
NBPsell
NovaBridge Biosciences
Sean Wuxiong Cao
See Remarks
$43k
21,399 shares
-38%
50Moderate
NBPbuy
NovaBridge Biosciences
Mark Arnold Hagler
See Remarks
$577k
230,000 shares
-

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.

Cong Claire Xu sold $2,593 of NBP | InsiderTell