0001104659-23-068617.txt : 20230606 0001104659-23-068617.hdr.sgml : 20230606 20230606184904 ACCESSION NUMBER: 0001104659-23-068617 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230604 FILED AS OF DATE: 20230606 DATE AS OF CHANGE: 20230606 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Liawatidewi Yakob CENTRAL INDEX KEY: 0001743927 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36509 FILM NUMBER: 23997318 MAIL ADDRESS: STREET 1: C/O AMPHASTAR PHARMACEUTICALS INC STREET 2: 11570 SIXTH 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 tm2317726-3_4seq1.xml OWNERSHIP DOCUMENT X0407 4 2023-06-04 0 0001297184 Amphastar Pharmaceuticals, Inc. AMPH 0001743927 Liawatidewi Yakob C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET RANCHO CUCAMONGA CA 91730 1 1 0 0 EVP Corp Admin Center 0 Common Stock 2023-06-04 4 F 0 378 46.70 D 69669 D Common Stock 2459 I See footnote The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs. Includes 832 shares acquired under the Issuer's 2014 Employee Stock Purchase Plan on May 31, 2023. The reported shares are held of record by the Yakob and Sunmoon Trust dated July 25, 2013 for which the reporting person serves as a trustee. /s/ Eva Wen, by power of attorney 2023-06-06