Amphastar Pharmaceuticals, Inc. (AMPH) Corporate Subsidiaries
Amphastar Pharmaceuticals, Inc. (AMPH) is a publicly traded company on the Nasdaq, categorized under SIC 2834 (Pharmaceutical Preparations). Access real-time SEC filings, 10-K annual reports, 10-Q quarterlies, 8-K current reports, PCAOB auditor history, and executive compensation disclosures.
Ticker: AMPH
CIK: 1297184
Exchange: Nasdaq
SIC 2834: Pharmaceutical Preparations
Fiscal Year End: 12/31
Independent PCAOB Auditor
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Audit Firm
Ernst & Young LLP
Auditor SinceSince 12/31/2016 12:00:00 AM
Lead Engagement PartnerCheryl Moreno
Audit LocationIrvine, California, United States
Latest SEC EDGAR Filings
Showing 10-K, 10-Q, 8-K, Form 4, and other SEC submissions| Form | Filing Date | Reporting Period | Description | Accession Number | Actions |
|---|---|---|---|---|---|
| 4 | 2026-09-23 | 2026-09-21 | 4 Filing | 0001263136-26-000014 | View SEC Doc Filr Page |
| 144 | 2026-09-21 | — | 144 Filing | 0001969223-26-001034 | View SEC Doc Filr Page |
| 4 | 2026-09-17 | 2026-09-16 | 4 Filing | 0001645326-26-000014 | View SEC Doc Filr Page |
| 4 | 2026-09-03 | 2026-09-02 | 4 Filing | 0001645326-26-000012 | View SEC Doc Filr Page |
| 144 | 2026-09-01 | — | 144 Filing | 0001969223-26-000982 | View SEC Doc Filr Page |
| 144 | 2026-08-18 | — | 144 Filing | 0001969223-26-000926 | View SEC Doc Filr Page |
| 4 | 2026-08-12 | 2026-08-11 | 4 Filing | 0001047579-26-000005 | View SEC Doc Filr Page |
| 4 | 2026-08-11 | 2026-08-07 | 4 Filing | 0001263136-26-000012 | View SEC Doc Filr Page |
| 144 | 2026-08-11 | — | 144 Filing | 0001969223-26-000880 | View SEC Doc Filr Page |
| 144 | 2026-08-07 | — | 144 Filing | 0001969223-26-000860 | View SEC Doc Filr Page |
| 10-Q | 2026-08-06 | 2026-06-30 | 10-Q | 0001297184-26-000047 | View SEC Doc Filr Page |
| 8-K | 2026-08-06 | 2026-08-06 | 8-K | 0001297184-26-000045 | View SEC Doc Filr Page |
| SCHEDULE 13G | 2026-07-14 | — | SCHEDULE 13G Filing | 0000354204-26-000782 | View SEC Doc Filr Page |
| 4 | 2026-07-13 | 2026-07-09 | 4 Filing | 0002141303-26-000005 | View SEC Doc Filr Page |
| 3 | 2026-07-13 | 2026-07-09 | 3 Filing | 0002141303-26-000003 | View SEC Doc Filr Page |
| 8-K | 2026-07-13 | 2026-07-09 | 8-K | 0001104659-26-082772 | View SEC Doc Filr Page |
| 8-K | 2026-07-08 | 2026-07-02 | 8-K | 0001297184-26-000041 | View SEC Doc Filr Page |
| 4 | 2026-06-03 | 2024-08-19 | 4 Filing | 0001047579-26-000003 | View SEC Doc Filr Page |
| 4 | 2026-06-03 | 2026-06-01 | 4 Filing | 0001379941-26-000003 | View SEC Doc Filr Page |
| 4 | 2026-06-03 | 2026-06-01 | 4 Filing | 0001033511-26-000003 | View SEC Doc Filr Page |
| 4 | 2026-06-03 | 2026-06-01 | 4 Filing | 0001611283-26-000003 | View SEC Doc Filr Page |
| 4 | 2026-06-03 | 2026-06-01 | 4 Filing | 0002075974-26-000003 | View SEC Doc Filr Page |
| 4 | 2026-06-03 | 2026-06-01 | 4 Filing | 0001866024-26-000003 | View SEC Doc Filr Page |
| 8-K | 2026-06-03 | 2026-06-01 | 8-K | 0001297184-26-000038 | View SEC Doc Filr Page |
| 10-Q | 2026-05-07 | 2026-03-31 | 10-Q | 0001297184-26-000033 | View SEC Doc Filr Page |