Amphastar Pharmaceuticals, Inc. — All Filings
924 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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144
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424B4
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CT ORDER
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UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 8-K | 8-K | 0001297184-25-000040 | Jul 21, 2025 | Jul 18, 2025 |
| 4 | — | 0001415889-25-019356 | Jul 3, 2025 | Jul 2, 2025 |
| 144 | — | 0001969223-25-000486 | Jul 2, 2025 | — |
| 4 | — | 0001415889-25-017423 | Jun 16, 2025 | Jun 13, 2025 |
| 4 | — | 0001415889-25-015676 | Jun 4, 2025 | Jun 2, 2025 |
| 8-K | 8-K | 0001297184-25-000036 | Jun 4, 2025 | Jun 2, 2025 |
| 4 | — | 0001415889-25-015686 | Jun 4, 2025 | Jun 2, 2025 |
| 4 | — | 0001415889-25-015658 | Jun 4, 2025 | Jun 2, 2025 |
| 4 | — | 0001415889-25-015660 | Jun 4, 2025 | Jun 2, 2025 |
| 4 | — | 0001415889-25-015664 | Jun 4, 2025 | Jun 2, 2025 |
| 4 | — | 0001415889-25-015656 | Jun 4, 2025 | Jun 2, 2025 |
| 144 | — | 0001969223-25-000376 | Jun 2, 2025 | — |
| 4 | — | 0001415889-25-013821 | May 20, 2025 | May 19, 2025 |
| 10-Q | 10-Q | 0001297184-25-000029 | May 8, 2025 | Mar 31, 2025 |
| 8-K | 8-K | 0001297184-25-000025 | May 7, 2025 | — |
| 4 | — | 0001415889-25-011878 | May 2, 2025 | May 1, 2025 |
| 144 | — | 0001969223-25-000250 | May 1, 2025 | — |
| ARS | ARS | 0001297184-25-000022 | Apr 14, 2025 | Dec 31, 2024 |
| DEF 14A | DEF 14A | 0001297184-25-000018 | Apr 14, 2025 | Jun 2, 2025 |
| DEFA14A | DEFA14A | 0001297184-25-000020 | Apr 14, 2025 | — |
| PRE 14A | PRE 14A | 0001297184-25-000012 | Apr 2, 2025 | Jun 2, 2025 |
| 4 | — | 0001415889-25-009776 | Apr 2, 2025 | Apr 1, 2025 |
| 144 | — | 0001973141-25-000171 | Apr 1, 2025 | — |
| 4 | — | 0001415889-25-008497 | Mar 18, 2025 | Mar 15, 2025 |
| 4 | — | 0001415889-25-008500 | Mar 18, 2025 | Mar 15, 2025 |
| 4 | — | 0001415889-25-008523 | Mar 18, 2025 | Mar 14, 2025 |
| 4 | — | 0001415889-25-008525 | Mar 18, 2025 | Mar 15, 2025 |
| 4 | — | 0001415889-25-007831 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | — | 0001415889-25-007783 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | — | 0001415889-25-007798 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | — | 0001415889-25-007791 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | — | 0001415889-25-007501 | Mar 10, 2025 | Mar 6, 2025 |
| 4 | — | 0001415889-25-007503 | Mar 10, 2025 | Mar 6, 2025 |
| 4 | — | 0001415889-25-007542 | Mar 10, 2025 | Mar 6, 2025 |
| 4 | — | 0001415889-25-007561 | Mar 10, 2025 | Mar 6, 2025 |
| 4 | — | 0001415889-25-007365 | Mar 7, 2025 | Mar 6, 2025 |
| 4 | — | 0001415889-25-007241 | Mar 6, 2025 | Mar 4, 2025 |
| 4 | — | 0001415889-25-007198 | Mar 6, 2025 | Mar 4, 2025 |
| 144 | — | 0001973141-25-000139 | Mar 6, 2025 | — |
| 4 | — | 0001415889-25-007188 | Mar 6, 2025 | Mar 4, 2025 |
| 4 | — | 0001415889-25-007204 | Mar 6, 2025 | Mar 4, 2025 |
| 144 | — | 0001973141-25-000127 | Mar 4, 2025 | — |
| 10-K | 10-K | 0001297184-25-000008 | Mar 3, 2025 | Dec 31, 2024 |
| 8-K | 8-K | 0001297184-25-000003 | Feb 27, 2025 | — |
| SCHEDULE 13G/A | — | 0001104659-25-010636 | Feb 7, 2025 | — |
| 4 | — | 0001415889-24-029491 | Dec 16, 2024 | Dec 12, 2024 |
| 4 | — | 0001415889-24-029033 | Dec 11, 2024 | Dec 9, 2024 |
| 144 | — | 0001969223-24-000892 | Dec 9, 2024 | — |
| 4 | — | 0001415889-24-026756 | Nov 13, 2024 | Nov 12, 2024 |
| 4 | — | 0001415889-24-026764 | Nov 13, 2024 | Nov 12, 2024 |