Amprius Technologies, Inc.
AMPX- Exchange
- NYSE
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies
- SEC CIK
- 0001899287
Other share classesAMPX.WT
Insider trades, last 90 days
0 buys · 3 sells
- Sold $1.27M
- Open-market purchases (P) and sales (S), counted by Form 4 filing.
13F holders, Q2 2026
261
- +16 vs. Q1 2026
- Total value $1.36B
Superinvestors holding AMPX
0
- None of the superinvestors held AMPX at the end of Q2 2026.
Price chart
Latest insider trades
View all: Latest insider tradesOpen-market purchases and sales by AMPX insiders, newest first.
| Filed (ET) | Trade date | Insider | Transaction | Shares | Avg price | Value | Shares after | Holding change | Filing |
|---|---|---|---|---|---|---|---|---|---|
| Aug 25, 20265:22 PM ET | Aug 21, 2026 | Sun KangDirector | SSaleCommon stock | −62.1K | $10.341 | −$642.19K | 1.22M | −4.8% | SEC |
| Aug 25, 20265:22 PM ET | Aug 21, 2026 | Stefan Constantin IonelChief Technology Officer | SSaleCommon stock | −29.68K | $10.341 | −$306.93K | 771.63K | −3.7% | SEC |
| Aug 25, 20265:21 PM ET | Aug 21 – Aug 24, 2026 | Stepien Thomas MChief Executive Officer | SSaleCommon stock | −31.53K | $10.2621 | −$323.55K | 594.1K | −5.0% | SEC |
| Jun 16, 2026 | Jun 15, 2026 | DIXON DONALD RDirector | SSaleCommon stock | −85K | $17.17 | −$1.46M | 359.38K | −19.1% | SEC |
| Jun 11, 2026 | Jun 9, 2026 | DIXON DONALD RDirector | SSaleCommon stock | −40K | $19.13 | −$765.2K | 444.38K | −8.3% | SEC |
Top 5 13F holders, Q2 2026
View all: Top 5 13F holders, Q2 2026The largest institutional positions in AMPX at the end of Q2 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 11,335,092 | $157.1M | 0.00% | +2,109,481+22.9% | Added |
| VANGUARD CAPITAL MANAGEMENT LLC | 5,562,985 | $77.1M | 0.00% | +654,110+13.3% | Added |
| MORGAN STANLEY | 5,105,505 | $70.76M | 0.00% | +1,943,338+61.5% | Added |
| TWO SIGMA INVESTMENTS, LP | 4,318,630 | $59.86M | 0.05% | +812,555+23.2% | Added |
| UBS Group AG | 4,072,269 | $56.44M | 0.01% | +1,760,715+76.2% | Added |