<SEC-DOCUMENT>0000886346-22-000077.txt : 20220401
<SEC-HEADER>0000886346-22-000077.hdr.sgml : 20220401
<ACCEPTANCE-DATETIME>20220401082224
ACCESSION NUMBER:		0000886346-22-000077
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220331
FILED AS OF DATE:		20220401
DATE AS OF CHANGE:		20220401

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Langevin Eric T
		CENTRAL INDEX KEY:			0001354978

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11406
		FILM NUMBER:		22795906

	MAIL ADDRESS:	
		STREET 1:		KADANT INC.
		STREET 2:		ONE ACTON PLACE, SUITE 202
		CITY:			ACTON
		STATE:			MA
		ZIP:			01720

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KADANT INC
		CENTRAL INDEX KEY:			0000886346
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY (NO METALWORKING MACHINERY) [3550]
		IRS NUMBER:				521762325
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0101

	BUSINESS ADDRESS:	
		STREET 1:		ONE TECHNOLOGY PARK DRIVE
		CITY:			WESTFORD
		STATE:			MA
		ZIP:			01886
		BUSINESS PHONE:		(978) 776-2000

	MAIL ADDRESS:	
		STREET 1:		ONE TECHNOLOGY PARK DRIVE
		CITY:			WESTFORD
		STATE:			MA
		ZIP:			01886

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	THERMO FIBERTEK INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_164881572523761.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2022-03-31</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000886346</issuerCik>
        <issuerName>KADANT INC</issuerName>
        <issuerTradingSymbol>KAI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001354978</rptOwnerCik>
            <rptOwnerName>Langevin Eric T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>KADANT INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE TECHNOLOGY PARK DRIVE</rptOwnerStreet2>
            <rptOwnerCity>WESTFORD</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01886</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Vice President &amp; COO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <transactionCode>M</transactionCode>
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                <transactionPricePerShare>
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        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Unit</value>
            </securityTitle>
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                <transactionPricePerShare>
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                </underlyingSecurityTitle>
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            </transactionDate>
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                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionPricePerShare>
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                    <value>Common Stock</value>
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                <transactionCode>D</transactionCode>
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                <transactionShares>
                    <value>496</value>
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    <footnotes>
        <footnote id="F1">The shares represent the settlement under a performance-based Restricted Stock Unit (&quot;RSU&quot;) award granted March 2, 2020.  Pursuant to the terms of an executive transition agreement between the reporting person and the Issuer dated October 27, 2021 (&quot;Transition Agreement&quot;), the vesting of the reporting person's outstanding RSUs was accelerated, such that the RSUs vested and became distributable in full on March 31, 2022, the termination date of the reporting person. The shares of common stock underlying such RSUs were converted to common stock on a one-for-one basis on the vesting date.</footnote>
        <footnote id="F2">The shares represent the settlement under a time-based RSU award granted March 2, 2020.  Pursuant to the terms of the Transition Agreement, the vesting of the reporting person's outstanding RSUs was accelerated, such that the RSUs vested and became distributable in full on March 31, 2022, the termination date of the reporting person. The shares of common stock underlying such RSUs were converted to common stock on a one-for-one basis on the vesting date.</footnote>
        <footnote id="F3">The shares represent the forfeiture under a performance-based RSU award granted March 9, 2021.</footnote>
        <footnote id="F4">The shares represent the forfeiture under a time-based RSU award granted March 9, 2021.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Stacy D. Krause, by power of attorney</signatureName>
        <signatureDate>2022-04-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
