<SEC-DOCUMENT>0001969223-23-000098.txt : 20230515
<SEC-HEADER>0001969223-23-000098.hdr.sgml : 20230515
<ACCEPTANCE-DATETIME>20230515133905
ACCESSION NUMBER:		0001969223-23-000098
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230515
DATE AS OF CHANGE:		20230515

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:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-36509
		FILM NUMBER:		23920635

	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

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ZASLOFF MICHAEL A
		CENTRAL INDEX KEY:			0001033511
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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      <filer>
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          <cik>0001033511</cik>
          <ccc>XXXXXXXX</ccc>
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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0001297184</issuerCik>
      <issuerName>Amphastar Pharmaceuticals, Inc</issuerName>
      <secFileNumber>001-36509</secFileNumber>
      <issuerAddress>
        <com:street1>11570 SIXTH STREET</com:street1>
        <com:city>RANCHO CUCAMONGA</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>91730</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>909-980-9484</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Michael Zasloff</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>UBS Financial Services Inc</name>
        <address>
          <com:street1>1000 Harbor Blvd</com:street1>
          <com:street2>3rd Floor</com:street2>
          <com:city>Weehawken</com:city>
          <com:stateOrCountry>NJ</com:stateOrCountry>
          <com:zipCode>07086</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>7500</noOfUnitsSold>
      <aggregateMarketValue>312150</aggregateMarketValue>
      <noOfUnitsOutstanding>48190000</noOfUnitsOutstanding>
      <approxSaleDate>05/15/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common stock</securitiesClassTitle>
      <acquiredDate>06/07/2022</acquiredDate>
      <natureOfAcquisitionTransaction>RSU Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>6019</amountOfSecuritiesAcquired>
      <paymentDate>06/07/2022</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common stock</securitiesClassTitle>
      <acquiredDate>06/07/2019</acquiredDate>
      <natureOfAcquisitionTransaction>RSU Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1481</amountOfSecuritiesAcquired>
      <paymentDate>06/07/2019</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>05/15/2023</noticeDate>
      <signature>/s/ UBS Financial Services Inc, as attorney-in-fact for Michael Zasloff</signature>
    </noticeSignature>
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