<SEC-DOCUMENT>0001678021-21-000008.txt : 20211112
<SEC-HEADER>0001678021-21-000008.hdr.sgml : 20211112
<ACCEPTANCE-DATETIME>20211112160643
ACCESSION NUMBER:		0001678021-21-000008
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211109
FILED AS OF DATE:		20211112
DATE AS OF CHANGE:		20211112

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tison Stuart
		CENTRAL INDEX KEY:			0001678021

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32598
		FILM NUMBER:		211403428

	MAIL ADDRESS:	
		STREET 1:		C/O ENTEGRIS, INC.
		STREET 2:		129 CONCORD ROAD
		CITY:			BILLERICA
		STATE:			MA
		ZIP:			01821

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ENTEGRIS INC
		CENTRAL INDEX KEY:			0001101302
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS PRODUCTS, NEC [3089]
		IRS NUMBER:				411941551
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		129 CONCORD ROAD
		CITY:			BILLERICA
		STATE:			MA
		ZIP:			01821
		BUSINESS PHONE:		9784366500

	MAIL ADDRESS:	
		STREET 1:		129 CONCORD ROAD
		CITY:			BILLERICA
		STATE:			MA
		ZIP:			01821
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4
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            <rptOwnerName>Tison Stuart</rptOwnerName>
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            <rptOwnerCity>BILLERICA</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01821</rptOwnerZipCode>
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            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle>SVP &amp; GM, SCEM</officerTitle>
            <otherText></otherText>
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    <derivativeTable>
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            <securityTitle>
                <value>Employee Stock Option (Right to Buy)</value>
            </securityTitle>
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                <value>31.1</value>
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            <transactionDate>
                <value>2021-11-09</value>
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                <transactionFormType>4</transactionFormType>
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                    <value>3217</value>
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                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
                <footnoteId id="F1"/>
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            <expirationDate>
                <value>2025-02-19</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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            <exerciseDate>
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                <value>2027-02-19</value>
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                    <value>Common Stock</value>
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    <footnotes>
        <footnote id="F1">The option vests in four equal annual installments. The first three installments became exercisable on February 19, 2019, February 19, 2020 and February 19, 2021. The remaining installment will become exercisable on February 19, 2022.</footnote>
        <footnote id="F2">The option vests in four equal annual installments. The first installment became exercisable on February 19, 2021. The remaining three installments will become exercisable on February 19, 2022, February 19, 2023 and February 19, 2024.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joseph Colella, Attorney-In-Fact for Stuart Tison</signatureName>
        <signatureDate>2021-11-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
