0001973141-23-000204.txt : 20230906 0001973141-23-000204.hdr.sgml : 20230906 20230906160232 ACCESSION NUMBER: 0001973141-23-000204 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230906 DATE AS OF CHANGE: 20230906 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Amphastar Pharmaceuticals, Inc. CENTRAL INDEX KEY: 0001297184 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 330702205 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-36509 FILM NUMBER: 231239105 BUSINESS ADDRESS: STREET 1: 11570 SIXTH STREET CITY: RANCHO CUCAMONGA STATE: CA ZIP: 91730 BUSINESS PHONE: 909-980-9484 MAIL ADDRESS: STREET 1: 11570 SIXTH STREET CITY: RANCHO CUCAMONGA STATE: CA ZIP: 91730 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: PETERS WILLIAM J CENTRAL INDEX KEY: 0001263136 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O AMPHASTAR PHARMACEUTICALS, INC. STREET 2: 11570 6TH STREET CITY: RANCHO CUCAMONGA STATE: CA ZIP: 91730 144 1 primary_doc.xml 144 0001263136 XXXXXXXX LIVE 0001297184 Amphastar Pharmaceuticals, Inc. 001-36509 11570 SIXTH STREET RANCHO CUCAMONGA CA 91730 909-980-9484 PETERS WILLIAM J Officer Common UBS Financial Services, Inc.

1000 Harbor Blvd 3rd Floor Weehawken NJ 07086

60743 3148917.00 48855602 09/06/2023 NASDAQ Common 03/15/2023 RSU Vesting Issuer N 4243 03/15/2023 N/A Common 09/06/2023 Exercise of stock options Issuer N 56500 09/06/2023 CASH N William Peters

11570 SIXTH STREET RANCHO CUCAMONGA CA 91730

Common 06/15/2023 36868 1874789.72 09/06/2023 06/05/2023 /s/ UBS Financial Services Inc, as attorney-in-fact for William J Peters