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sellWeak cluster of 4

Chan W Lee sold $552k of AMBA

Chief Operations Officer at AMBARELLA INC. 10,370 shares at an average of $53.25, traded Mar 17, 2026, filed Mar 19, 2026.

Warning score
39
Value
$552k
10,370 shares
Holdings after
160,049
-6% from before
From 52-week low
+31%
low $40.30, close $52.69
From 52-week high
-45%
high $95.51, as of Mar 17, 2026

Score components

  • Role
    COO
    +20
  • Trade size
    $552k at market
    +19
  • Share of holdings sold
    Sold 6.4% 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.

AMBAOct 9, 2026 · close 67.43
Since filing Mar 19, 2026: +20.7%SPY +18.9% · excess +1.8%

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 0001280263-26-000029, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 17, 2026MOption exercise
Ordinary Shares
+13,678--163,099Mar 19, 2026
Mar 17, 2026SOpen-market sale
Ordinary Shares
-6,729$52.77$355k156,370Mar 19, 2026
Mar 18, 2026AGrant or award
Ordinary Shares
+7,320$0.00$0163,690Mar 19, 2026
Mar 19, 2026SOpen-market sale
Ordinary Shares
-3,641$54.14$197k160,049Mar 19, 2026
Mar 17, 2026MOption exercise
Performance Stock Unitsderivative
-13,678$0.00$00Mar 19, 2026

Related signals

Other insiders at AMBARELLA INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
10Weak
AMBAsell 510b5-1
AMBARELLA INC
Christopher B Paisley
director
$18k
250 shares
-1%
28Weak
AMBAsell 510b5-1
AMBARELLA INC
John Alexander Young
CFO
$128k
1,896 shares
-2%
49Moderate
AMBAsell 5
AMBARELLA INC
John Alexander Young
CFO
$203k
3,126 shares
-3%
47Moderate
AMBAsell 5
AMBARELLA INC
Chan W Lee
Chief Operations Officer
$188k
2,893 shares
-2%
41Moderate
AMBAsell 5
AMBARELLA INC
Chi-Hong Ju
Senior VP, Systems & GM
$130k
2,009 shares
-1%
56Moderate
AMBAsell 5
AMBARELLA INC
Feng-Ming Wang
CEO
$395k
6,086 shares
-1%
50Moderate
AMBAsell 4
AMBARELLA INC
Feng-Ming Wang
CEO
$1.4M
27,059 shares
-3%
30Weak
AMBAsell 4
AMBARELLA INC
Chi-Hong Ju
Senior VP, Systems & GM, Asia
$366k
6,884 shares
-4%
38Weak
AMBAsell 4
AMBARELLA INC
John Alexander Young
CFO
$406k
7,615 shares
-6%
15Weak
AMBAsell10b5-1
AMBARELLA INC
Feng-Ming Wang
CEO
$3.0M
50,000 shares
-6%

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.

Chan W Lee sold $552k of AMBA | InsiderTell