Amprius Technologies, Inc. insider trading
AMPX$9.67+0.06 (+0.62% today)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-22.6%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
- AIAmprius, Inc.Not reported
- KSKang SunNot reported
- SWSandra WallachNot reported
- DRDonald R. DixonNot reported
- CIConstantin Ionel StefanNot reported
- TMThomas M. StepienNot reported
- JBJonathan BornsteinNot reported
- RCRicardo C. RodriguezNot reported
- LSLivingston SatterthwaiteNot reported
- KAKathleen A. BaylessNot reported
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| AMPX | Thomas M. Stepien | Open market sell$80.2K | -1.3% | $10.03 | $80.2K | Aug 24, 2026 | Aug 25, 2026 |
| AMPX | Thomas M. Stepien | Open market sell$243K | -3.6% | $10.34 | $243K | Aug 21, 2026 | Aug 25, 2026 |
| AMPX | Constantin Ionel Stefan | Open market sell$307K | -3.7% | $10.34 | $307K | Aug 21, 2026 | Aug 25, 2026 |
| AMPX | Kang Sun | Open market sell$642K | -4.7% | $10.34 | $642K | Aug 21, 2026 | Aug 25, 2026 |
| AMPX | Donald R. Dixon | Open market sell$1.46M | -9.6% | $17.17 | $1.46M | Jun 15, 2026 | Jun 16, 2026 |
| AMPX | Donald R. Dixon | Open market sell$765K | -5.3% | $19.13 | $765K | Jun 9, 2026 | Jun 11, 2026 |
| AMPX | Thomas M. Stepien | Open market sell$41.9K | -0.2% | $20.97 | $41.9K | Jun 4, 2026 | Jun 5, 2026 |
| AMPX | Thomas M. Stepien | Open market sell$75.2K | -0.6% | $17.19 | $75.2K | May 27, 2026 | May 28, 2026 |
| AMPX | Constantin Ionel Stefan | Open market sell$55.1K | -0.4% | $17.19 | $55.1K | May 27, 2026 | May 28, 2026 |
| AMPX | Kang Sun | Open market sell$6.12K | 0.0% | $17.19 | $6.12K | May 27, 2026 | May 28, 2026 |
| AMPX | Donald R. Dixon | Open market sell$320K | -2.3% | $17.90 | $320K | May 26, 2026 | May 28, 2026 |
| AMPX | Thomas M. Stepien | Open market sell$898K | -8.0% | $14.79 | $898K | May 21, 2026 | May 26, 2026 |
| AMPX | Constantin Ionel Stefan | Open market sell$426K | -3.5% | $14.79 | $426K | May 21, 2026 | May 26, 2026 |
| AMPX | Kang Sun | Open market sell$1M | -4.8% | $14.79 | $1M | May 21, 2026 | May 26, 2026 |
| AMPX | Kang Sun | Open market sell$1.24M | -4.4% | $19.06 | $1.24M | Mar 23, 2026 | Mar 24, 2026 |
| AMPX | Kang Sun | Open market sell$2.86M | -9.5% | $18.69 | $2.86M | Mar 23, 2026 | Mar 24, 2026 |
| AMPX | Constantin Ionel Stefan | Open market sell$258K | -3.4% | $10.16 | $258K | Feb 23, 2026 | Feb 24, 2026 |
| AMPX | Kang Sun | Open market sell$622K | -3.7% | $10.16 | $622K | Feb 23, 2026 | Feb 24, 2026 |
| AMPX | Constantin Ionel Stefan | Open market sell$252K | -3.0% | $10.08 | $252K | Nov 21, 2025 | Nov 25, 2025 |
| AMPX | Kang Sun | Open market sell$692K | -3.9% | $10.08 | $692K | Nov 21, 2025 | Nov 25, 2025 |