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: 35
Latest filed: Mar 26, 2026
| Form | Count |
|---|---|
| 4 | 21 |
| 8-K | 7 |
| 144 | 6 |
| SCHEDULE 13G/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Mar 26, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000687 | View |
| Mar 17, 2026 | 4 | Mar 15, 2026 | 0000889740-26-000007 | View |
| Mar 17, 2026 | 4 | Mar 15, 2026 | 0001263136-26-000010 | View |
| Mar 17, 2026 | 4 | Mar 15, 2026 | 0001645326-26-000010 | View |
| Mar 17, 2026 | 4 | Mar 15, 2026 | 0001743927-26-000010 | View |
| Mar 16, 2026 | 8-K | Mar 12, 2026 | 0001104659-26-027814 | View |
| Mar 11, 2026 | 4 | Mar 09, 2026 | 0001263136-26-000008 | View |
| Mar 11, 2026 | 4 | Mar 09, 2026 | 0001743927-26-000008 | View |
| Mar 11, 2026 | 4 | Mar 09, 2026 | 0001645326-26-000008 | View |
| Mar 11, 2026 | 4 | Mar 09, 2026 | 0000889740-26-000005 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0001263136-26-000006 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000889740-26-000003 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0001645326-26-000006 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0001743927-26-000006 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001104659-26-024842 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001263136-26-000003 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001743927-26-000003 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001645326-26-000003 | View |
| Mar 06, 2026 | 8-K | Mar 03, 2026 | 0001297184-26-000013 | View |
| Mar 06, 2026 | 8-K | Mar 03, 2026 | 0001297184-26-000015 | View |
| Feb 26, 2026 | 8-K | Feb 26, 2026 | 0001297184-26-000007 | View |
| Jan 12, 2026 | 8-K | Jan 06, 2026 | 0001297184-26-000002 | View |
| Dec 18, 2025 | 4 | Dec 17, 2025 | 0001645326-25-000004 | View |
| Dec 15, 2025 | 4 | Dec 11, 2025 | 0001611286-25-000011 | View |
| Dec 11, 2025 | 144 | — | 0001969223-25-001078 | View |
| Dec 10, 2025 | 144 | — | 0001969223-25-001063 | View |
| Nov 28, 2025 | 144 | — | 0001969223-25-001002 | View |
| Nov 25, 2025 | 144 | — | 0001969223-25-000996 | View |
| Nov 25, 2025 | 4 | Nov 25, 2025 | 0001047579-25-000006 | View |
| Nov 17, 2025 | 4 | Nov 13, 2025 | 0001611286-25-000009 | View |
| Nov 13, 2025 | 144 | — | 0001969223-25-000949 | View |
| Nov 06, 2025 | 8-K | Nov 06, 2025 | 0001297184-25-000062 | View |
| Nov 05, 2025 | 4 | Nov 03, 2025 | 0001611286-25-000007 | View |
| Nov 03, 2025 | 144 | — | 0001969223-25-000906 | View |
| Oct 24, 2025 | 8-K | Oct 21, 2025 | 0001297184-25-000058 | View |