Machine signal
Active cluster sell — 4 distinct insiders, $3.7M, window ends Aug 24, 2026.
Figures computed from official regulatory filings — .
Analysttarget 22.1 USD (+192%) · consensus 4.91/5 · 11 buy · 0 hold · 0 sell
Ownershipinsiders 1.18% · institutions 69.46% · short 15.9% of float
In USD · as of Oct 19, 2026
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Data for Amprius Technologies, Inc. only. No web search. Global per-insider statistics are excluded.
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Amprius Technologies, Inc. develops, manufactures, and markets lithium-ion batteries for mobility applications. The company provides silicon anode lithium-ion batteries under the SiCore and SiMaxx product platforms. Its batteries are primarily used for existing and emerging aviation applications, including unmanned aerial systems, such as drones and high-altitude pseudo satellites. The company was founded in 2008 and is headquartered in Fremont, California.
Market information source · Oct 19, 2026
Periods recorded in the consulted sources. These do not certify the legal dates of name changes.
SEC company identity · Oct 19, 2026
Open-market timeline · full history
122 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details | |
|---|---|---|---|---|---|
| Stepien Thomas M | Sell | $243.3K | SEC |
| Stepien Thomas M | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Stepien Thomas M | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Stepien Thomas M | Sell | $80.2K | SEC |
| Stepien Thomas M | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Stepien Thomas M | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Stepien Thomas M | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Stefan Constantin Ionel | Sell | $306.9K | SEC |
| Sun Kang | Sell | $642.2K | SEC |
| DIXON DONALD R | Sell | $1.5M | SEC |
| BAYLESS KATHLEEN A | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| DIXON DONALD R | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| SATTERTHWAITE LIVINGSTON | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Chu Steven | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| DIXON DONALD R | Sell | $765.2K | SEC |
| Stepien Thomas M | Sell | $41.9K | SEC |
| Stepien Thomas M | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Stepien Thomas M | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Stepien Thomas M | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Sun Kang | Sell | $6.1K | SEC |
| DIXON DONALD R | Sell | $320.3K | SEC |
| Stepien Thomas M | Sell | $75.2K | SEC |
| Stefan Constantin Ionel | Sell | $55.2K | SEC |
| Stepien Thomas M | Sell | $897.7K | SEC |
| Stefan Constantin Ionel | Sell | $426.1K | SEC |