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sellModerate cluster of 6

Yun-Lung Chen sold $717k of AMBA

VP, Business Development at AMBARELLA INC. 8,492 shares at an average of $84.42, traded Sep 10, 2025, filed Sep 12, 2025.

Warning score
56
Value
$717k
8,492 shares
Holdings after
61,651
-12% from before
From 52-week low
+107%
low $40.30, close $83.47
From 52-week high
-1%
high $84.64, as of Sep 10, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $717k at market
    +21
  • Share of holdings sold
    Sold 12% of holdings
    +5
  • Cluster
    6 insiders selling within 14 days
    +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 Sep 12, 2025: -16.1%SPY +20.0% · excess -36.1%

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 0001280263-25-000049, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 10, 2025SOpen-market sale
Ordinary Shares
-8,492$84.42$717k61,651Sep 12, 2025

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%
39Weak
AMBAsell 4
AMBARELLA INC
Chan W Lee
Chief Operations Officer
$552k
10,370 shares
-6%
38Weak
AMBAsell 4
AMBARELLA INC
John Alexander Young
CFO
$406k
7,615 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.

Yun-Lung Chen sold $717k of AMBA | InsiderTell