Amphastar Pharmaceuticals, Inc.
SEC Filing List

AMPH CIK: 0001297184

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Form	Description	Owner/Filer	Filing Agent	Date	Actions
SCHEDULE 13G				07/14/2026	View ... Create Alert Filing info Download PDF Copy Link
4	Statement of changes in beneficial owner...	Pierce Anthony T	Amphastar Pharmaceuticals, Inc.	07/13/2026	View ... Create Alert Filing info Download PDF Copy Link
3	Initial statement of beneficial ownershi...	Pierce Anthony T	Amphastar Pharmaceuticals, Inc.	07/13/2026	View ... Create Alert Filing info Download PDF Copy Link
8-K	Current report filing	Amphastar Pharmaceuticals, Inc.	Toppan Merrill/FA	07/13/2026	View ... Create Alert Filing info Download PDF Copy Link View XBRL Download CSV
3	Initial statement of beneficial ownershi...	Pierce Anthony T	Amphastar Pharmaceuticals, Inc.	07/13/2026	View ... Create Alert Filing info Download PDF Copy Link
4	Statement of changes in beneficial owner...	Pierce Anthony T	Amphastar Pharmaceuticals, Inc.	07/13/2026	View ... Create Alert Filing info Download PDF Copy Link
8-K	Current report filing	Amphastar Pharmaceuticals, Inc.		07/08/2026	View ... Create Alert Filing info Download PDF Copy Link View XBRL Download CSV
4	Statement of changes in beneficial owner...	Lee Howard	Amphastar Pharmaceuticals, Inc.	06/03/2026	View ... Create Alert Filing info Download PDF Copy Link
4	Statement of changes in beneficial owner...	Gerst Diane G.	Amphastar Pharmaceuticals, Inc.	06/03/2026	View ... Create Alert Filing info Download PDF Copy Link
4	Statement of changes in beneficial owner...	Prins Richard K	Amphastar Pharmaceuticals, Inc.	06/03/2026	View ... Create Alert Filing info Download PDF Copy Link
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