Amphastar Pharmaceuticals, Inc. - AMPH
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: 22
Latest filed: Sep 17, 2026
| Form | Count |
|---|---|
| 4 | 11 |
| 8-K | 5 |
| 144 | 4 |
| SCHEDULE 13G | 1 |
| SCHEDULE 13G/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Sep 17, 2026 | 4 | Sep 16, 2026 | 0001645326-26-000014 | View |
| Sep 03, 2026 | 4 | Sep 02, 2026 | 0001645326-26-000012 | View |
| Sep 01, 2026 | 144 | — | 0001969223-26-000982 | View |
| Aug 18, 2026 | 144 | — | 0001969223-26-000926 | View |
| Aug 12, 2026 | 4 | Aug 11, 2026 | 0001047579-26-000005 | View |
| Aug 11, 2026 | 4 | Aug 07, 2026 | 0001263136-26-000012 | View |
| Aug 11, 2026 | 144 | — | 0001969223-26-000880 | View |
| Aug 07, 2026 | 144 | — | 0001969223-26-000860 | View |
| Aug 06, 2026 | 8-K | Aug 06, 2026 | 0001297184-26-000045 | View |
| Jul 14, 2026 | SCHEDULE 13G | — | 0000354204-26-000782 | View |
| Jul 13, 2026 | 4 | Jul 09, 2026 | 0002141303-26-000005 | View |
| Jul 13, 2026 | 8-K | Jul 09, 2026 | 0001104659-26-082772 | View |
| Jul 08, 2026 | 8-K | Jul 02, 2026 | 0001297184-26-000041 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0001379941-26-000003 | View |
| Jun 03, 2026 | 4 | Aug 19, 2024 | 0001047579-26-000003 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0001033511-26-000003 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0001866024-26-000003 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0002075974-26-000003 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0001611283-26-000003 | View |
| Jun 03, 2026 | 8-K | Jun 01, 2026 | 0001297184-26-000038 | View |
| May 07, 2026 | 8-K | May 07, 2026 | 0001297184-26-000031 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000687 | View |