Amprius Technologies, Inc. - AMPX
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 53
Latest filed: Aug 13, 2026
| Form | Count |
|---|---|
| 4 | 23 |
| 144 | 16 |
| 8-K | 7 |
| SCHEDULE 13G/A | 3 |
| 4/A | 2 |
| 8-K/A | 1 |
| SCHEDULE 13G | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Aug 13, 2026 | 8-K | Aug 07, 2026 | 0001899287-26-000062 | View |
| Aug 10, 2026 | SCHEDULE 13G/A | — | 0001595888-26-000085 | View |
| Aug 04, 2026 | 8-K | Aug 04, 2026 | 0001899287-26-000056 | View |
| Jul 27, 2026 | SCHEDULE 13G/A | — | 0002012383-26-002178 | View |
| Jun 17, 2026 | 8-K | Jun 11, 2026 | 0001899287-26-000053 | View |
| Jun 16, 2026 | 4 | Jun 12, 2026 | 0001296381-26-000005 | View |
| Jun 16, 2026 | 4 | Jun 12, 2026 | 0001045434-26-000009 | View |
| Jun 16, 2026 | 4 | Jun 12, 2026 | 0001230569-26-000005 | View |
| Jun 16, 2026 | 4 | Jun 12, 2026 | 0001517394-26-000003 | View |
| Jun 11, 2026 | 4 | Jun 09, 2026 | 0001045434-26-000007 | View |
| Jun 08, 2026 | 144 | — | 0001949846-26-000360 | View |
| Jun 05, 2026 | 4 | Jun 04, 2026 | 0002067233-26-000015 | View |
| Jun 04, 2026 | 144 | — | 0001950047-26-005630 | View |
| May 28, 2026 | 4 | May 26, 2026 | 0001045434-26-000005 | View |
| May 28, 2026 | 144 | — | 0001940928-26-000018 | View |
| May 28, 2026 | 4 | May 27, 2026 | 0001940928-26-000020 | View |
| May 28, 2026 | 144 | — | 0002067233-26-000010 | View |
| May 28, 2026 | 4 | May 27, 2026 | 0002067233-26-000012 | View |
| May 28, 2026 | 144 | — | 0001476220-26-000028 | View |
| May 28, 2026 | 4 | May 27, 2026 | 0001476220-26-000029 | View |
| May 26, 2026 | 144 | — | 0001476220-26-000022 | View |
| May 26, 2026 | 4 | May 21, 2026 | 0001476220-26-000025 | View |
| May 26, 2026 | 144 | — | 0002067233-26-000006 | View |
| May 26, 2026 | 4 | May 21, 2026 | 0002067233-26-000008 | View |
| May 26, 2026 | 144 | — | 0001940928-26-000014 | View |
| May 26, 2026 | 4 | May 21, 2026 | 0001940928-26-000016 | View |
| May 26, 2026 | 144 | — | 0001949846-26-000318 | View |
| May 19, 2026 | 8-K/A | May 06, 2026 | 0001899287-26-000051 | View |
| May 08, 2026 | 8-K | May 06, 2026 | 0001899287-26-000047 | View |
| May 07, 2026 | 4 | May 05, 2026 | 0001476220-26-000017 | View |
| May 07, 2026 | 4/A | Dec 19, 2025 | 0002067233-26-000004 | View |
| May 06, 2026 | 8-K | May 06, 2026 | 0001899287-26-000037 | View |
| Apr 28, 2026 | SCHEDULE 13G | — | 0001595888-26-000030 | View |
| Apr 21, 2026 | 8-K | Apr 17, 2026 | 0001899287-26-000022 | View |
| Apr 02, 2026 | 4 | Apr 01, 2026 | 0001476220-26-000015 | View |
| Apr 01, 2026 | 144 | — | 0001950047-26-003170 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000623 | View |
| Mar 24, 2026 | 4 | Mar 23, 2026 | 0001476220-26-000013 | View |
| Mar 23, 2026 | 144 | — | 0001950047-26-002926 | View |
| Mar 13, 2026 | 4 | Mar 12, 2026 | 0001835160-26-000007 | View |
| Mar 13, 2026 | 4/A | Mar 04, 2026 | 0001920996-26-000004 | View |
| Mar 12, 2026 | 144 | — | 0001950047-26-002557 | View |
| Mar 12, 2026 | 144 | — | 0001950047-26-002559 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001296381-26-000003 | View |
| Mar 10, 2026 | 144 | — | 0001950047-26-002423 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001920996-26-000002 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001940928-26-000012 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0002067233-26-000002 | View |
| Mar 04, 2026 | 8-K | Mar 04, 2026 | 0001899287-26-000009 | View |
| Feb 24, 2026 | 144 | — | 0001940928-26-000007 | View |
| Feb 24, 2026 | 144 | — | 0001476220-26-000009 | View |
| Feb 24, 2026 | 4 | Feb 23, 2026 | 0001476220-26-000011 | View |
| Feb 24, 2026 | 4 | Feb 23, 2026 | 0001940928-26-000009 | View |