Stepien Thomas Minsider trades
In SEC Form 4 filings, Stepien Thomas M is listed as Chief Executive Officer of Amprius Technologies, Inc. (AMPX). In the last 90 days, Stepien Thomas M sold $323.6K of Amprius Technologies, Inc. (AMPX) on the open market and bought none.
Companies and roles
| Company | Role | Transactions | Last filed |
|---|---|---|---|
| AMPXAmprius Technologies, Inc. | Chief Executive Officer | 7 | Aug 25 |
Cluster buys
No cluster buy in the last 90 days included a purchase by this insider (two or more insiders buying within 14 days).
Form 4 historysince 2026-08-25
| Company | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| AMPXAmprius Technologies, Inc. | Aug 25 | Aug 25 | G | 5,000 | $0.00 | $0 | 589,096 | No | Form 4 |
| AMPXAmprius Technologies, Inc. | Aug 25 | Aug 25 | G | 5,000 | $0.00 | $0 | 584,096 | No | Form 4 |
| AMPXAmprius Technologies, Inc. | Aug 25 | Aug 25 | G | 5,000 | $0.00 | $0 | 579,096 | No | Form 4 |
| AMPXAmprius Technologies, Inc. | Aug 25 | Aug 25 | G | 346 | $0.00 | $0 | 578,750 | No | Form 4 |
| AMPXAmprius Technologies, Inc. | Aug 25 | Aug 25 | A | 346 | $0.00 | $0 | 37,260 | No | Form 4 |
| AMPXAmprius Technologies, Inc. | Aug 24 | Aug 25 | S | 8,000 | $10.03 | Sale −$80,240 | 594,096 | No | Form 4 |
| AMPXAmprius Technologies, Inc. | Aug 21 | Aug 25 | S | 23,529 | $10.34 | Sale −$243,313 | 602,096 | No | Form 4 |
Published from this insider's public Form 4 filings on SEC EDGAR; the name is shown as filed. Named in a filing and want this page removed? See the privacy policy.