0001415889-24-015633.txt : 20240605 0001415889-24-015633.hdr.sgml : 20240605 20240605175849 ACCESSION NUMBER: 0001415889-24-015633 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240603 FILED AS OF DATE: 20240605 DATE AS OF CHANGE: 20240605 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: PRINS RICHARD K CENTRAL INDEX KEY: 0001047579 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36509 FILM NUMBER: 241023241 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 form4-06052024_090644.xml X0508 4 2024-06-03 0001297184 Amphastar Pharmaceuticals, Inc. AMPH 0001047579 PRINS RICHARD K C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET RANCHO CUCAMONGA CA 91730 true false false false 0 Common Stock 2024-06-03 4 A 0 3076 0 A 33971 D Stock Option (right to buy) 42.25 2024-06-03 4 A 0 6864 0 A 2034-06-03 Common Stock 6864 6864 D The reported shares are represented by restricted stock units, or RSUs, all of which vest on June 3, 2025. All of the shares subject to the option vest on June 3, 2025. /s/ Eva Wen, by power of attorney 2024-06-05