Form 4 Filing: Stepien Thomas M Sells $42K of $AMPX

INSIDER SALE

⚡ MATERIALITY: 6/10

corporate issuer

Amprius Technologies, Inc.

Ticker: $AMPX

Transaction Value

$42K

Price/Share: $0.39

transaction date

2026-06-04

Shares: 106,212

Market Price Activity

HillSignal AI Analytical Report

SEC Form 4 documents direct changes in beneficial ownership of securities for public corporations. The reporting insider, Stepien Thomas M, holds the title of Chief Executive Officer at Amprius Technologies, Inc..

On 2026-06-04, the insider transacted 106,212 shares.The shares were transacted at a weighted average price of $0.39 per share, resulting in a total market-relevant value of $42K.

Executive Summary Summary

Stepien Thomas M (Chief Executive Officer) sold $42K of $AMPX

Post-Transaction Position: 625,625 shares

SEC Accession No: 0002067233-26-000015 (CIK: 2067233)

Verified Multi-Source Index

Verify the accuracy of this insider transaction and corporate entity independently. HillSignal pulls data directly from official SEC databases; use the sources below to corroborate.

SEC EDGAR FilingView Source Form 4

Yahoo Finance$AMPX Quote & Profile

OpenCorporates RegistryVerify Corporate Identity

Google News$AMPX News Coverage