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Thomas M Stepien Insider Profile

18 Followers
Thomas M Stepien, CEO, Director at Amprius Technologies Inc, holds 662.54K shares in Amprius Technologies Inc (Ticker: AMPX).
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Thomas M Stepien

Thomas M Stepien
Amprius Technologies Inc (AMPX)
CEO, Director

Ranked #32,736 out of 107,911 Corporate Insiders

Profitable Transactions

100%
3 out of 3 Profitable Transactions

Average Return

+15.70%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$11M
100.00%
A breakdown of Thomas M Stepien's holdings
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Insider Roles

Amprius Technologies Inc
(AMPX)
CEO, Director
Roles that Thomas M Stepien holds in companies
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Most Profitable Insider Trade

Stock:
Amprius Technologies Inc
(AMPX)
Rating:Informative Sell
Date:May 28, 2026 - Today
Return:+21.70%
The most profitable trade made by Thomas M Stepien
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Thomas M Stepien's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
AMPX
Amprius Technologies Inc
Jun 05, 2026
CEO, Director
Uninformative Buy
―
$10.71M
Success Rate for
AMPX
3 out of 3 profitable transactions on
AMPX
100%
Average Return for
AMPX
Average return per transaction on
AMPX
+15.77%
Date
Transaction
Amount
No. of Shares
Price per Share
Profit
Link to Report
May 06, 2025
Uninformative Buy
$0.00
400,000
$0.00
―
Dec 22, 2025
Uninformative Buy
$0.00
200,000
$0.00
―
Mar 06, 2026
Uninformative Buy
$0.00
150,000
$0.00
―
Jun 05, 2026
Uninformative Buy
$0.00
36,914
$0.00
―
May 26, 2026
Informative Sell
$897.18K
60,702
$14.78
+8.50%
List of latest transactions for each holding click on a transaction to see Thomas M Stepien's performance on stock
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Thomas M Stepien insider profile FAQ

What is the percentage of profitable transactions made by Thomas M Stepien?
The percentage of profitable transactions made by Thomas M Stepien is 100%.
    What is the average return per transaction made by Thomas M Stepien?
    The average return per transaction made by Thomas M Stepien is 15.70%.
      What stocks does Thomas M Stepien hold?
      Thomas M Stepien holds: AMPX stocks.
        What was Thomas M Stepien’s latest transaction?
        Thomas M Stepien latest transaction was an Uninformative Buy of ―.
          What was Thomas M Stepien's most profitable transaction?
          Thomas M Stepien’s most profitable transaction was an Informative Sell of AMPX stock on May 28, 2026. The return on the trade was 21.70%.
            What is Thomas M Stepien's role in Amprius Technologies Inc?
            Thomas M Stepien's role in Amprius Technologies Inc is CEO, Director.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.