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sellWeak cluster of 210b5-1 plan

Ming Yan sold $189k of CTKB

Chief Technology Officer at Cytek Biosciences, Inc.. 20,000 shares at an average of $9.43, traded Dec 19, 2023, filed Dec 21, 2023.

Warning score
15
Value
$189k
20,000 shares
Holdings after
6,042,103
-0% from before
From 52-week low
+132%
low $4.10, close $9.50
From 52-week high
-29%
high $13.47, as of Dec 19, 2023

Score components

  • Role
    Officer
    +15
  • Trade size
    $189k at market
    +12
  • Share of holdings sold
    Sold 0.3% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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.

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 Dec 21, 2023: -42.4%SPY +70.0% · excess -112.4%

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 0001209191-23-059472, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 19, 2023SOpen-market sale
Common Stock10b5-1
-20,000$9.43$189k6,042,103Dec 21, 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%
5Weak
CTKBsell10b5-1
Cytek Biosciences, Inc.
Ming Yan
CHIEF TECHNOLOGY OFFICER
$117k
20,000 shares
-0%
0Weak
CTKBsell10b5-1
Cytek Biosciences, Inc.
Ming Yan
CHIEF TECHNOLOGY OFFICER
$13k
1,900 shares
-0%
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%
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%
29Weak
CTKBsell 310b5-1
Cytek Biosciences, Inc.
Wenbin Jiang
President and CEO
$87k
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%

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.

Ming Yan sold $189k of CTKB | InsiderTell