Form 4 filings across 1 company. Net figures count open-market buys and sales only. EDGAR profile ↗
Lifetime net: -$10.9M
Reported holding is the most recent post-transaction share count on a Table I row.
How quickly this filer reports. Section 16 allows two business days from the transaction.
All 11 filings we hold were filed within the two-business-day deadline.
Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings
The 33 most recent Form 4 transactions.
| May 21 | AMPX | Amprius Technologies, Inc. | SSELL | 28,812 | $14.79 | $426.1K | -3.5% | Open the original filing on SEC.gov |
| Mar 4 | AMPX | Amprius Technologies, Inc. | AGRANT | 110,000 | — | — | +15.2% | Open the original filing on SEC.gov |
| Feb 23 | AMPX | Amprius Technologies, Inc. | SSELL | 25,366 | $10.16 | $257.6K | -3.4% | Open the original filing on SEC.gov |
| Jan 28 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 39,600 | — | — | — | Open the original filing on SEC.gov |
| Jan 28 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 90 | — | — | — | Open the original filing on SEC.gov |
| Jan 28 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 39,690 | $12.00 | $476.4K | -5.0% | Open the original filing on SEC.gov |
| Jan 28 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 39,600 | $0.05 | $2K | +5.3% | Open the original filing on SEC.gov |
| Jan 28 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 90 | $0.62 | $56 | +<0.1% | Open the original filing on SEC.gov |
| Jan 23 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 1,600 | — | — | — | Open the original filing on SEC.gov |
| Jan 23 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 1,600 | $12.00 | $19.2K | -0.2% | Open the original filing on SEC.gov |
| Jan 23 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 1,600 | $0.05 | $80 | +0.2% | Open the original filing on SEC.gov |
| Jan 22 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 166,104 | — | — | — | Open the original filing on SEC.gov |
| Jan 22 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 72,795 | — | — | — | Open the original filing on SEC.gov |
| Jan 22 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 253,928 | — | — | — | Open the original filing on SEC.gov |
| Jan 22 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 492,827 | $12.04 | $5.9M | -39.7% | Open the original filing on SEC.gov |
| Jan 22 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 166,104 | $0.05 | $8.3K | +15.4% | Open the original filing on SEC.gov |
| Jan 22 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 72,795 | $0.45 | $32.8K | +7.3% | Open the original filing on SEC.gov |
| Jan 22 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 253,928 | $0.05 | $12.7K | +33.9% | Open the original filing on SEC.gov |
| Jan 21 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 15,883 | — | — | — | Open the original filing on SEC.gov |
| Jan 21 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 15,834 | — | — | — | Open the original filing on SEC.gov |
| Jan 21 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 41,563 | — | — | — | Open the original filing on SEC.gov |
| Jan 21 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 73,280 | $12.00 | $879.4K | -8.9% | Open the original filing on SEC.gov |
| Jan 21 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 15,883 | $0.05 | $794 | +2.0% | Open the original filing on SEC.gov |
| Jan 21 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 15,834 | $0.05 | $792 | +2.0% | Open the original filing on SEC.gov |
| Jan 21 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 41,563 | $0.62 | $25.8K | +5.5% | Open the original filing on SEC.gov |
| Dec 11, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 125,000 | — | — | — | Open the original filing on SEC.gov |
| Dec 11, 2025 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 198,255 | $10.51 | $2.1M | -20.9% | Open the original filing on SEC.gov |
| Dec 11, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 125,000 | $0.05 | $6.3K | +15.2% | Open the original filing on SEC.gov |
| Nov 21, 2025 | AMPX | Amprius Technologies, Inc. | SSELL | 25,024 | $10.08 | $252.3K | -2.9% | Open the original filing on SEC.gov |
| Aug 21, 2025 | AMPX | Amprius Technologies, Inc. | SSELL | 19,159 | $6.82 | $130.6K | -2.2% | Open the original filing on SEC.gov |
| May 21, 2025 | AMPX | Amprius Technologies, Inc. | SSELL | 20,366 | $2.43 | $49.5K | -2.3% | Open the original filing on SEC.gov |