0001104659-21-151321.txt : 20211217 0001104659-21-151321.hdr.sgml : 20211217 20211217195206 ACCESSION NUMBER: 0001104659-21-151321 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20211216 FILED AS OF DATE: 20211217 DATE AS OF CHANGE: 20211217 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: PETERS WILLIAM J CENTRAL INDEX KEY: 0001263136 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36509 FILM NUMBER: 211503318 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] 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 tm2135847-1_4seq1.xml OWNERSHIP DOCUMENT X0306 4 2021-12-16 0 0001297184 Amphastar Pharmaceuticals, Inc. AMPH 0001263136 PETERS WILLIAM J C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET RANCHO CUCAMONGA CA 91730 0 1 0 0 CFO, EVP & Treasurer Common Stock 2021-12-16 4 M 0 1744 14.40 A 107786 D Common Stock 2021-12-16 4 S 0 1744 22.40 D 106042 D Employee Stock Option (right to buy) 14.40 2021-12-16 4 M 0 1744 0 D 2024-04-21 Common Stock 1744 116809 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 7, 2021. Includes 353 shares acquired under the Issuer's 2014 Employee Stock Purchase Plan on November 30, 2021. Shares subject to the option are fully vested and immediately exercisable. /s/ William J. Peters 2021-12-17