<SEC-DOCUMENT>0001950047-25-010635.txt : 20251222
<SEC-HEADER>0001950047-25-010635.hdr.sgml : 20251222
<ACCEPTANCE-DATETIME>20251222182238
ACCESSION NUMBER:		0001950047-25-010635
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251222
DATE AS OF CHANGE:		20251222

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Emergent BioSolutions Inc.
		CENTRAL INDEX KEY:			0001367644
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				141902018
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-33137
		FILM NUMBER:		251593744

	BUSINESS ADDRESS:	
		STREET 1:		300 PROFESSIONAL DR
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20879
		BUSINESS PHONE:		240-631-3200

	MAIL ADDRESS:	
		STREET 1:		300 PROFESSIONAL DR
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20879

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SULLIVAN LOUIS W
		CENTRAL INDEX KEY:			0001193522
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SULLIVAN LOUIS
		DATE OF NAME CHANGE:	20020927
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
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    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001193522</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001367644</issuerCik>
            <issuerName>EMERGENT BIOSOLUTIONS INC</issuerName>
            <secFileNumber>001-33137</secFileNumber>
            <issuerAddress>
                <ns2:street1>300 Professional Drive</ns2:street1>
                <ns2:city>Gaithersburg,</ns2:city>
                <ns2:stateOrCountry>MD</ns2:stateOrCountry>
                <ns2:zipCode>20879</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(240) 631-3200</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>LOUIS W SULLIVAN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>104695</noOfUnitsSold>
            <aggregateMarketValue>1336462.98</aggregateMarketValue>
            <noOfUnitsOutstanding>52519964</noOfUnitsOutstanding>
            <approxSaleDate>12/22/2025</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/18/2016</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>94390</amountOfSecuritiesAcquired>
            <paymentDate>05/18/2016</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/10/2021</acquiredDate>
            <natureOfAcquisitionTransaction>Exercised Shares</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>10305</amountOfSecuritiesAcquired>
            <paymentDate>05/10/2021</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <remarks>The securities to be sold were acquired upon the vesting of restricted stock during the period of 5/18/2016 through 5/25/2025</remarks>
        <noticeSignature>
            <noticeDate>12/22/2025</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Louis W. Sullivan</signature>
        </noticeSignature>
    </formData>
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</SEC-DOCUMENT>
