Form 4 filings across 1 company. Net figures count open-market buys and sales only. EDGAR profile ↗
Lifetime net: -$58.2M
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 13 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 40 most recent Form 4 transactions.
| May 21 | AMPX | Amprius Technologies, Inc. | SSELL | 67,796 | $14.79 | $1M | -5.0% | Open the original filing on SEC.gov |
| May 5 | AMPX | Amprius Technologies, Inc. | AGRANT | 6,250 | — | — | +0.5% | Open the original filing on SEC.gov |
| Apr 1 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 187,495 | $3.68 | $690K | — | Open the original filing on SEC.gov |
| Apr 1 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 1.3M | $1.78 | $2.3M | — | Open the original filing on SEC.gov |
| Apr 1 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 249,037 | $16.78 | $4.2M | -15.7% | Open the original filing on SEC.gov |
| Apr 1 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 1.3M | $15.73 | $19.7M | -44.0% | Open the original filing on SEC.gov |
| Apr 1 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 187,495 | $3.68 | $690K | +7.1% | Open the original filing on SEC.gov |
| Apr 1 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 1.3M | $1.78 | $2.3M | +97.8% | Open the original filing on SEC.gov |
| Mar 23 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 65,046 | $19.06 | $1.2M | -53.6% | Open the original filing on SEC.gov |
| Mar 23 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 152,823 | $18.69 | $2.9M | -55.7% | Open the original filing on SEC.gov |
| Feb 23 | AMPX | Amprius Technologies, Inc. | SSELL | 61,251 | $10.16 | $622K | -4.4% | Open the original filing on SEC.gov |
| Jan 20 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 43,185 | — | — | — | Open the original filing on SEC.gov |
| Jan 20 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 43,185 | $11.03 | $476.3K | -3.0% | Open the original filing on SEC.gov |
| Jan 20 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 43,185 | $1.78 | $76.9K | +3.1% | Open the original filing on SEC.gov |
| Jan 16 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 100,210 | — | — | — | Open the original filing on SEC.gov |
| Jan 16 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 850,338 | — | — | — | Open the original filing on SEC.gov |
| Jan 16 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 950,548 | $11.07 | $10.5M | -40.4% | Open the original filing on SEC.gov |
| Jan 16 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 100,210 | $1.78 | $178.4K | +4.5% | Open the original filing on SEC.gov |
| Jan 16 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 850,338 | $2.50 | $2.1M | +60.6% | Open the original filing on SEC.gov |
| Jan 12 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 117,201 | — | — | — | Open the original filing on SEC.gov |
| Jan 12 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 208,264 | — | — | — | Open the original filing on SEC.gov |
| Jan 12 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 180,802 | — | — | — | Open the original filing on SEC.gov |
| Jan 12 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 506,267 | $10.10 | $5.1M | -26.5% | Open the original filing on SEC.gov |
| Jan 12 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 117,201 | $2.50 | $293K | +6.5% | Open the original filing on SEC.gov |
| Jan 12 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 208,264 | $2.44 | $508.2K | +13.1% | Open the original filing on SEC.gov |
| Jan 12 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 180,802 | $0.62 | $112.1K | +12.9% | Open the original filing on SEC.gov |
| Nov 21, 2025 | AMPX | Amprius Technologies, Inc. | SSELL | 68,655 | $10.08 | $692.1K | -4.7% | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 41,653 | — | — | — | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 27,463 | — | — | — | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 727,950 | — | — | — | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷?◆ | 202,934 | — | — | — | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | SSELL◷? | 1M | $10.60 | $10.6M | -40.5% | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 41,653 | $0.62 | $25.8K | +1.7% | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 27,463 | $0.62 | $17K | +1.1% | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 727,950 | $0.05 | $36.4K | +43.5% | Open the original filing on SEC.gov |
| Nov 17, 2025 | AMPX | Amprius Technologies, Inc. | MEXER◷? | 202,934 | $0.98 | $198.9K | +13.8% | Open the original filing on SEC.gov |
| Aug 21, 2025 | AMPX | Amprius Technologies, Inc. | SSELL | 65,654 | $6.82 | $447.5K | -4.3% | Open the original filing on SEC.gov |
| May 21, 2025 | AMPX | Amprius Technologies, Inc. | SSELL | 69,786 | $2.43 | $169.7K | -3.7% | Open the original filing on SEC.gov |