<SEC-DOCUMENT>0000886346-21-000140.txt : 20211008
<SEC-HEADER>0000886346-21-000140.hdr.sgml : 20211008
<ACCEPTANCE-DATETIME>20211008170032
ACCESSION NUMBER:		0000886346-21-000140
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211006
FILED AS OF DATE:		20211008
DATE AS OF CHANGE:		20211008

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Powell Jeffrey L
		CENTRAL INDEX KEY:			0001406518

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11406
		FILM NUMBER:		211315917

	MAIL ADDRESS:	
		STREET 1:		1 WALNUT STREET
		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>
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<SEQUENCE>1
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                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F14"/>
            </exerciseDate>
            <expirationDate>
                <value>2023-03-06</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1200.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7894</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>25.98</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-10-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>128</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F14"/>
            </exerciseDate>
            <expirationDate>
                <value>2023-03-06</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>128.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7766</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The transaction reported on this Form 4 were executed pursuant to a  Rule 10b5-1 trading plan adopted September 1, 2021.</footnote>
        <footnote id="F2">Represents the weighted average sale price.  The actual sales prices range from $203.43 to $204.42 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F3">Represents the weighted average sale price.  The actual sales prices range from $204.66 to $205.58 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F4">Represents the weighted average sale price.  The actual sales prices range from $206.17 to $207.16 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F5">Represents the weighted average sale price.  The actual sales prices range from $207.18 to $207.90 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F6">Represents the weighted average sale price.  The actual sales prices range from $206.64 to $207.32 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F7">Represents the weighted average sale price.  The actual sales prices range from $205.04 to $205.91 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F8">Represents the weighted average sale price.  The actual sales prices range from $206.05 to $207.01 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F9">Represents the weighted average sale price.  The actual sales prices range from $207.10 to $208 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F10">Represents the weighted average sale price.  The actual sales prices range from $208.50 to $208.69 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F11">Represents the weighted average sale price.  The actual sales prices range from $202.71 to $203.50 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F12">Represents the weighted average sale price.  The actual sales prices range from $203.72 to $204.68 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F13">Represents the weighted average sale price.  The actual sales prices range from $204.80 to $205.39 per share.  The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.</footnote>
        <footnote id="F14">The stock option is fully vested.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Stacy D. Krause, by power of attorney</signatureName>
        <signatureDate>2021-10-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
