<SEC-DOCUMENT>0001897612-25-000096.txt : 20250214
<SEC-HEADER>0001897612-25-000096.hdr.sgml : 20250214
<ACCEPTANCE-DATETIME>20250214094521
ACCESSION NUMBER:		0001897612-25-000096
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250214
DATE AS OF CHANGE:		20250214

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Avantor, Inc.
		CENTRAL INDEX KEY:			0001722482
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				822758923
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-91022
		FILM NUMBER:		25624144

	BUSINESS ADDRESS:	
		STREET 1:		RADNOR CORPORATE CENTER, BUILDING ONE
		STREET 2:		SUITE 200, 100 MATSONFORD ROAD
		CITY:			RADNOR
		STATE:			PA
		ZIP:			19087
		BUSINESS PHONE:		(610) 386-1700

	MAIL ADDRESS:	
		STREET 1:		RADNOR CORPORATE CENTER, BUILDING ONE
		STREET 2:		SUITE 200, 100 MATSONFORD ROAD
		CITY:			RADNOR
		STATE:			PA
		ZIP:			19087

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Avantor, Inc
		DATE OF NAME CHANGE:	20190206

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Vail Holdco Corp
		DATE OF NAME CHANGE:	20171113

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			T. Rowe Price Investment Management, Inc.
		CENTRAL INDEX KEY:			0001897612
		ORGANIZATION NAME:           	
		IRS NUMBER:				854328500
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		100 EAST PRATT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
		BUSINESS PHONE:		000-000-0000

	MAIL ADDRESS:	
		STREET 1:		100 EAST PRATT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>SCHEDULE 13G/A</submissionType>
        <previousAccessionNumber>0001897612-22-000310</previousAccessionNumber>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001897612</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>


        </filerInfo>
    </headerData>
    <formData>
        <coverPageHeader>
            <amendmentNo>5</amendmentNo>
            <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
            <eventDateRequiresFilingThisStatement>12/31/2024</eventDateRequiresFilingThisStatement>
            <issuerInfo>
                <issuerCik>0001722482</issuerCik>
                <issuerName>AVANTOR INC</issuerName>
                <issuerCusip>05352A100</issuerCusip>
                <issuerPrincipalExecutiveOfficeAddress>
                    <ns2:street1>RADNOR CORP CTR, BUILDING ONE, STE 200</ns2:street1>
                    <ns2:street2>100 MATSONFORD ROAD</ns2:street2>
                    <ns2:city>RADNOR</ns2:city>
                    <ns2:stateOrCountry>PA</ns2:stateOrCountry>
                    <ns2:zipCode>19087</ns2:zipCode>
                </issuerPrincipalExecutiveOfficeAddress>
            </issuerInfo>
            <designateRulesPursuantThisScheduleFiled>
                <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
            </designateRulesPursuantThisScheduleFiled>
        </coverPageHeader>
        <coverPageHeaderReportingPersonDetails>

            <reportingPersonName>T. Rowe Price Investment Management, Inc.</reportingPersonName>
            <citizenshipOrOrganization>MD</citizenshipOrOrganization>
            <reportingPersonBeneficiallyOwnedNumberOfShares>
                <soleVotingPower>41262714</soleVotingPower>
                <sharedVotingPower>0</sharedVotingPower>
                <soleDispositivePower>41360393</soleDispositivePower>
                <sharedDispositivePower>0</sharedDispositivePower>
            </reportingPersonBeneficiallyOwnedNumberOfShares>
            <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>41360393</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
            <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
            <classPercent>6.1</classPercent>
            <typeOfReportingPerson>IA</typeOfReportingPerson>
        </coverPageHeaderReportingPersonDetails>
        <items>
            <item1>
                <issuerName>AVANTOR INC</issuerName>
                <issuerPrincipalExecutiveOfficeAddress>RADNOR CORP CTR, BUILDING ONE, STE 200, 100 MATSONFORD ROAD, RADNOR, PA, 19087</issuerPrincipalExecutiveOfficeAddress>
            </item1>
            <item2>
                <filingPersonName>T. Rowe Price Investment Management, Inc.</filingPersonName>
                <principalBusinessOfficeOrResidenceAddress>101 E. Pratt Street, Baltimore, MD 21201</principalBusinessOfficeOrResidenceAddress>
                <citizenship>Maryland</citizenship>
            </item2>
            <item3>
                <notApplicableFlag>N</notApplicableFlag>
                <typeOfPersonFiling>IA</typeOfPersonFiling>
            </item3>
            <item4>
                <amountBeneficiallyOwned>41360393</amountBeneficiallyOwned>
                <classPercent>6.1</classPercent>
                <numberOfSharesPersonHas>
                    <solePowerOrDirectToVote>41262714</solePowerOrDirectToVote>
                    <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
                    <solePowerOrDirectToDispose>41360393</solePowerOrDirectToDispose>
                    <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
                </numberOfSharesPersonHas>
            </item4>
            <item5>
                <notApplicableFlag>Y</notApplicableFlag>
            </item5>
            <item6>
                <notApplicableFlag>Y</notApplicableFlag>
            </item6>
            <item7>
                <notApplicableFlag>Y</notApplicableFlag>
            </item7>
            <item8>
                <notApplicableFlag>Y</notApplicableFlag>
            </item8>
            <item9>
                <notApplicableFlag>Y</notApplicableFlag>
            </item9>
            <item10>
                <notApplicableFlag>N</notApplicableFlag>
                <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. T. Rowe Price Investment Management, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Investment Management is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.</certifications>
            </item10>
        </items>
        <signatureInformation>
            <reportingPersonName>T. Rowe Price Investment Management, Inc.</reportingPersonName>
            <signatureDetails>
                <signature>Ellen York</signature>
                <title>Vice President</title>
                <date>02/14/2025</date>
            </signatureDetails>
        </signatureInformation>
    </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
