<SEC-DOCUMENT>0001104659-23-007522-index.html : 20230127
<SEC-HEADER>0001104659-23-007522.hdr.sgml : 20230127
<ACCEPTANCE-DATETIME>20230127160638
ACCESSION NUMBER:		0001104659-23-007522
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230127
DATE AS OF CHANGE:		20230127
GROUP MEMBERS:		APPLIED PHYSICS & CHEMISTRY LABORATORIES INC.
GROUP MEMBERS:		MARY ZIPING LUO

SUBJECT COMPANY:	

	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

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88204
		FILM NUMBER:		23562817

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Zhang Jack Y.
		CENTRAL INDEX KEY:			0001611157

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	MAIL ADDRESS:	
		STREET 1:		11570 6TH STREET
		CITY:			RANCHO CUCAMONGA
		STATE:			CA
		ZIP:			91730
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>tm234579d1_sc13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: tm234579d1_sc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>