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sellWeak cluster of 210b5-1 plan

Jonathan Bornstein sold $106k of AMPX

President of Amprius Lab at Amprius Technologies, Inc.. 27,631 shares at an average of $3.84, traded Nov 20, 2023, filed Nov 21, 2023.

Warning score
23
Value
$106k
27,631 shares
Holdings after
0
-100% from before
From 52-week low
+42%
low $2.67, close $3.80
From 52-week high
-65%
high $10.80, as of Nov 20, 2023

Score components

  • Role
    President
    +20
  • Trade size
    $106k at market
    +10
  • Share of holdings sold
    Sold 100% of holdings
    +20
  • Cluster
    2 insiders selling within 14 days
    +8
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -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 -4.1%, 3m +0.8%, 6m -65.9%.

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.

AMPXOct 9, 2026 · close 9.44
Since filing Nov 21, 2023: +142.1%SPY +78.0% · excess +64.1%

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 0001942459-23-000008, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 20, 2023MOption exercise
Common stock10b5-1
+27,631$0.05$1,38227,631Nov 21, 2023
Nov 20, 2023SOpen-market sale
Common stock10b5-1
-27,631$3.84$106k0Nov 21, 2023
Nov 20, 2023MOption exercise
Stock Option (right to buy)derivative10b5-1
-27,631$0.00$01,733,851Nov 21, 2023

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
50Moderate
AMPXsell 3
Amprius Technologies, Inc.
Kang Sun
See Remarks
$642k
62,101 shares
-5%
44Moderate
AMPXsell 3
Amprius Technologies, Inc.
Constantin Ionel Stefan
Chief Technology Officer
$307k
29,681 shares
-4%
54Moderate
AMPXsell 3
Amprius Technologies, Inc.
Thomas M Stepien
Chief Executive Officer
$324k
31,529 shares
-5%
53Moderate
AMPXsell 2
Amprius Technologies, Inc.
Donald R Dixon
director
$1.5M
85,000 shares
-19%
52Moderate
AMPXsell 4
Amprius Technologies, Inc.
Donald R Dixon
director
$765k
40,000 shares
-8%
46Moderate
AMPXsell 4
Amprius Technologies, Inc.
Thomas M Stepien
Chief Executive Officer
$42k
2,000 shares
-0%
44Moderate
AMPXsell 4
Amprius Technologies, Inc.
Donald R Dixon
director
$320k
17,895 shares
-4%
30Weak
AMPXsell 4
Amprius Technologies, Inc.
Kang Sun
See Remarks
$6,121
356 shares
-0%
37Weak
AMPXsell 4
Amprius Technologies, Inc.
Constantin Ionel Stefan
Chief Technology Officer
$55k
3,208 shares
-0%
48Moderate
AMPXsell 4
Amprius Technologies, Inc.
Thomas M Stepien
Chief Executive Officer
$75k
4,375 shares
-1%

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.

Jonathan Bornstein sold $106k of AMPX | InsiderTell