Skip to content
sellWeak cluster of 310b5-1 plan

Wenbin Jiang sold $87k of CTKB

President and CEO at Cytek Biosciences, Inc.. 20,000 shares at an average of $4.34, traded Nov 7, 2023, filed Nov 8, 2023.

Warning score
29
Value
$87k
20,000 shares
Holdings after
5,275,796
-0% from before
From 52-week low
+9%
low $4.10, close $4.45
From 52-week high
-70%
high $14.76, as of Nov 7, 2023

Score components

  • Role
    CEO
    +25
  • Trade size
    $87k at market
    +9
  • Share of holdings sold
    Sold 0.4% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +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 +53.2%, 3m +57.2%, 6m +25.4%.

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.

CTKBOct 12, 2026 · close 5.31
Since filing Nov 8, 2023: +6.2%SPY +84.5% · excess -78.3%

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 0001209191-23-054731, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 7, 2023SOpen-market sale
Common Stock10b5-1
-20,000$4.34$87k5,275,796Nov 8, 2023

Related signals

Other insiders at Cytek Biosciences, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
42Moderate
CTKBbuy
Cytek Biosciences, Inc.
William D. McCombe
Chief Financial Officer
$97k
35,000 shares
+169%
8Weak
CTKBsell10b5-1
Cytek Biosciences, Inc.
Ming Yan
CHIEF TECHNOLOGY OFFICER
$270k
40,000 shares
-1%
15Weak
CTKBsell 210b5-1
Cytek Biosciences, Inc.
Patrik Jeanmonod
Chief Financial Officer
$29k
3,000 shares
-3%
15Weak
CTKBsell 210b5-1
Cytek Biosciences, Inc.
Ming Yan
Chief Technology Officer
$189k
20,000 shares
-0%
10Weak
CTKBsell 210b5-1
Cytek Biosciences, Inc.
Patrik Jeanmonod
Chief Financial Officer
$21k
3,000 shares
-3%
5Weak
CTKBsell 310b5-1
Cytek Biosciences, Inc.
Ming Yan
Chief Technology Officer
$121k
20,000 shares
-0%
17Weak
CTKBsell 310b5-1
Cytek Biosciences, Inc.
Patrik Jeanmonod
Chief Financial Officer
$14k
3,000 shares
-3%
20Weak
CTKBsell 310b5-1
Cytek Biosciences, Inc.
Ming Yan
Chief Technology Officer
$96k
20,000 shares
-0%
23Weak
CTKBsell 210b5-1
Cytek Biosciences, Inc.
Wenbin Jiang
President and CEO
$107k
20,000 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.

Wenbin Jiang sold $87k of CTKB | InsiderTell