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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

AMPX

Amprius Technologies, Inc.

Superinvestors

Institutional investors holding AMPX

Consensus →
InvestorFundWeightSharesValueQuarter
Polen Capital ManagementPolen Capital Management0.05%422,145$7.1M2026Q1

Congressional Activity

Congressional data coming soon

Insider Activity

13

Total trades

$29.7M

Volume

1

Buys

10

Sells

Last trade: Jun 4, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
Jun 4, 2026Thomas M StepienSell$42K
May 27, 2026Thomas M StepienSell$6K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

May 27, 2026
Thomas M Stepien
Sell
$55K
May 27, 2026Thomas M StepienSell$75K
May 26, 2026Thomas M StepienSell$320K
May 21, 2026Thomas M StepienSell$1.0M
May 21, 2026Thomas M StepienSell$426K
May 21, 2026Thomas M StepienSell$898K
May 5, 2026Thomas M StepienBuy–