0001415889-24-020626.txt : 20240802 0001415889-24-020626.hdr.sgml : 20240802 20240802163254 ACCESSION NUMBER: 0001415889-24-020626 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240731 FILED AS OF DATE: 20240802 DATE AS OF CHANGE: 20240802 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: PETERS WILLIAM J CENTRAL INDEX KEY: 0001263136 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36509 FILM NUMBER: 241171551 MAIL ADDRESS: STREET 1: C/O AMPHASTAR PHARMACEUTICALS, INC. STREET 2: 11570 6TH STREET CITY: RANCHO CUCAMONGA STATE: CA ZIP: 91730 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Amphastar Pharmaceuticals, Inc. CENTRAL INDEX KEY: 0001297184 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 330702205 FISCAL YEAR END: 1231 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 4 1 form4-08022024_080849.xml X0508 4 2024-07-31 0001297184 Amphastar Pharmaceuticals, Inc. AMPH 0001263136 PETERS WILLIAM J C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET RANCHO CUCAMONGA CA 91730 true true false false CFO, EVP & TREASURER 1 Common Stock 2024-07-31 4 M 0 10282 20.23 A 104385 D Common Stock 2024-07-31 4 S 0 10282 44.23 D 94103 D Employee Stock Option (right to buy) 20.23 2024-07-31 4 M 0 10282 0 D 2029-03-15 Common Stock 10282 4943 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 14, 2024. Shares subject to the option are fully vested and immediately exercisable. /s/ William J. Peters 2024-08-02