0001415889-24-029033.txt : 20241211 0001415889-24-029033.hdr.sgml : 20241211 20241211202814 ACCESSION NUMBER: 0001415889-24-029033 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20241209 FILED AS OF DATE: 20241211 DATE AS OF CHANGE: 20241211 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: 241542968 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 form4-12122024_011211.xml X0508 4 2024-12-09 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 2024-12-09 4 M 0 10000 19.52 A 40471 D Common Stock 2024-12-09 4 S 0 10000 43.7702 D 30471 D Common Stock 2024-12-09 4 G 0 410 0 D 30061 D Stock Option (right to buy) 19.52 2024-12-09 4 M 0 10000 0 D 2029-06-07 Common Stock 10000 0 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.75 to $43.98, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Shares subject to the option are fully vested and immediately exercisable. /s/ Eva Wen, by power of attorney 2024-12-11