<SEC-DOCUMENT>0001950047-23-000494.txt : 20230509
<SEC-HEADER>0001950047-23-000494.hdr.sgml : 20230509
<ACCEPTANCE-DATETIME>20230509170703
ACCESSION NUMBER:		0001950047-23-000494
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230509
DATE AS OF CHANGE:		20230509

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WEST PHARMACEUTICAL SERVICES INC
		CENTRAL INDEX KEY:			0000105770
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				231210010
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-08036
		FILM NUMBER:		23903243

	BUSINESS ADDRESS:	
		STREET 1:		530 HERMAN O. WEST DRIVE
		CITY:			EXTON
		STATE:			PA
		ZIP:			19341
		BUSINESS PHONE:		6105942900

	MAIL ADDRESS:	
		STREET 1:		530 HERMAN O. WEST DRIVE
		CITY:			EXTON
		STATE:			PA
		ZIP:			19341

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WEST CO INC
		DATE OF NAME CHANGE:	19990405

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Green Eric Mark
		CENTRAL INDEX KEY:			0001336007

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		530 HERMAN O. WEST DRIVE
		CITY:			EXTON
		STATE:			PA
		ZIP:			19341
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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        <submissionType>144</submissionType>
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            <filer>
                <filerCredentials>
                    <cik>0001336007</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
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            <liveTestFlag>LIVE</liveTestFlag>



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    <formData>
        <issuerInfo>
            <issuerCik>0000105770</issuerCik>
            <issuerName>WEST PHARMACEUTICAL SERVICES INC.</issuerName>
            <secFileNumber>001-08036</secFileNumber>
            <issuerAddress>
                <ns2:street1>530 Herman O. West Drive</ns2:street1>
                <ns2:city>Exton</ns2:city>
                <ns2:stateOrCountry>PA</ns2:stateOrCountry>
                <ns2:zipCode>19341-0645</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>610-594-2900</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ERIC GREEN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>44000</noOfUnitsSold>
            <aggregateMarketValue>15976518.80</aggregateMarketValue>
            <noOfUnitsOutstanding>74242584</noOfUnitsOutstanding>
            <approxSaleDate>05/09/2023</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/09/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Stock Option Exercise</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>44000</amountOfSecuritiesAcquired>
            <paymentDate>05/09/2023</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>Eric Green</name>
                <address>
                    <ns2:street1>530 Herman O. West Drive</ns2:street1>
                    <ns2:city>Exton</ns2:city>
                    <ns2:stateOrCountry>PA</ns2:stateOrCountry>
                    <ns2:zipCode>19341-0645</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/07/2023</saleDate>
            <amountOfSecuritiesSold>44000</amountOfSecuritiesSold>
            <grossProceeds>14183532.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>05/09/2023</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>09/14/2022</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Eric Mark Green</signature>
        </noticeSignature>
    </formData>
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