4 | SEC Filings Hub

Filing metadata

Accession number: 0001645326-25-000004
Form type: Form 4
Filer: Amphastar Pharmaceuticals, Inc.
CIK: CIK 1297184
Filed: Dec 18, 2025
Reporting period: Dec 17, 2025
Description: Insider transaction

Documents

0001645326-25-000004-index.htm

Complete submission

0001645326-25-000004.txt

directory listing

Filed by

Amphastar Pharmaceuticals, Inc.