0001297184
2021-11-08
2021-11-08
0001297184
false
DE
8-K
2021-11-08
Amphastar Pharmaceuticals, Inc.
001-36509
33-0702205
11570 6th Street
Rancho Cucamonga
CA
91730
909
980-9484
false
false
false
false
Common Stock, par value $0.0001 per share
AMPH
NASDAQ
false