Amprius Technologies, Inc. (AMPX) Insider Trading Activity — Form 4 Filings
Recent AMPX insider trading activity from SEC Form 4 filings, including executive and director buys, sells, awards, filing dates, and data limitations.
Direct answer: Amprius Technologies, Inc. (AMPX) has more selling than buying in the recent Form 4 activity available here. The data includes 180 parsed transactions from SEC filings.
SEC data retrieved .
Amprius Technologies, Inc. insider activity summary
Recent activity includes 0 open-market buys, 110 sells, and other Form 4 transactions. Buy and sell counts summarize the available recent filings; they are not a complete measure of insider conviction.
Recent Form 4 transactions
| Date | Insider | Type | Reported value |
|---|
| Aug 25, 2026 |
Stepien Thomas M |
AWARD |
Not disclosed |
| Aug 24, 2026 |
Stepien Thomas M |
SELL |
$80,240 |
| Aug 21, 2026 |
Sun Kang |
SELL |
$642,186 |
| Aug 21, 2026 |
Stefan Constantin Ionel |
SELL |
$306,931 |
| Aug 21, 2026 |
Stepien Thomas M |
SELL |
$243,313 |
| Jun 15, 2026 |
DIXON DONALD R |
SELL |
$1,459,212 |
| Jun 12, 2026 |
BAYLESS KATHLEEN A |
AWARD |
Not disclosed |
| Jun 12, 2026 |
SATTERTHWAITE LIVINGSTON |
AWARD |
Not disclosed |
| Jun 12, 2026 |
DIXON DONALD R |
AWARD |
Not disclosed |
| Jun 12, 2026 |
Chu Steven |
AWARD |
Not disclosed |
| Jun 9, 2026 |
DIXON DONALD R |
SELL |
$765,200 |
| Jun 4, 2026 |
Stepien Thomas M |
SELL |
$41,940 |
Sources and limitations
Source: SEC EDGAR Form 4 filings. Filing data can be delayed, amended, incomplete, or affected by SEC rate limits. Scheduled sales, awards, exercises, and open-market trades have different meanings. This page is informational and is not financial advice.
Frequently asked questions
When was AMPX insider data retrieved?
Sep 22, 2026, 7:09 PM UTC.
Does insider buying guarantee a higher stock price?
No. Insider transactions are one data point and do not predict future returns.
View the full AMPX stock analysis · Search another ticker's Form 4 filings
The information on this page is for educational and informational purposes only and does not constitute professional financial advice.