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sellModerate10b5-1 plan

Spenser Skates sold $1.0M of AMPL

CEO and President at Amplitude, Inc.. 70,087 shares at an average of $14.52, traded Oct 2, 2026, filed Oct 6, 2026.

Warning score
50
Value
$1.0M
70,087 shares
Holdings after
0
-100% from before
From 52-week low
+159%
low $5.61, close $14.52
From 52-week high
0%
high $14.52, as of Oct 2, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $1.0M at market
    +25
  • Share of holdings sold
    Sold 100% of holdings
    +20
  • Cluster
    No other insider selling within 14 days
    0
  • 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.

AMPLOct 9, 2026 · close 15.67
Since filing Oct 6, 2026: +5.9%SPY -0.1% · excess +6.1%

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 0001610717-26-000427, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Oct 2, 2026CConversion
Class A Common Stockindirect: By Spouse10b5-1
+70,087$0.00$070,0878 d ago
Oct 2, 2026SOpen-market sale
Class A Common Stockindirect: By Spouse10b5-1
-70,087$14.52$1.0M08 d ago
Oct 2, 2026CConversion
Class B Common Stockderivativeindirect: By Spouse10b5-1
-70,087$0.00$0307,1578 d ago

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
33Weak
AMPLsell10b5-1
Amplitude, Inc.
Spenser Skates
CEO and President
$71k
4,913 shares
-358%
58Moderate
AMPLsell 210b5-1
Amplitude, Inc.
Spenser Skates
CEO and President
$2.3M
185,000 shares
-100%
33Weak
AMPLsell 210b5-1
Amplitude, Inc.
Nathaniel Glenn Crook
Chief Commercial Officer
$3.9M
300,000 shares
-16%
15Weak
AMPLsell 210b5-1
Amplitude, Inc.
Curtis Liu
Chief Technology Officer
$183k
22,786 shares
-2%
10Weak
AMPLsell 210b5-1
Amplitude, Inc.
Catherine Wong
director
$51k
7,453 shares
-6%
15Weak
AMPLsell 210b5-1
Amplitude, Inc.
Curtis Liu
Chief Technology Officer
$178k
22,201 shares
-2%
6Weak
AMPLsell10b5-1
Amplitude, Inc.
Curtis Liu
Chief Technology Officer
$143k
17,586 shares
-2%
8Weak
AMPLsell10b5-1
Amplitude, Inc.
Curtis Liu
Chief Technology Officer
$266k
33,201 shares
-5%
8Weak
AMPLsell10b5-1
Amplitude, Inc.
Curtis Liu
Chief Technology Officer
$241k
30,061 shares
-5%
33Weak
AMPLsell 210b5-1
Amplitude, Inc.
Spenser Skates
Chief Executive Officer
$1,200
100 shares
-100%

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.

Spenser Skates sold $1.0M of AMPL | InsiderTell