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: 33
Latest filed: Jul 14, 2026
| Form | Count |
|---|---|
| 4 | 23 |
| 8-K | 8 |
| SCHEDULE 13G | 1 |
| SCHEDULE 13G/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| 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 |
| 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 |