<SEC-DOCUMENT>0001209191-21-063582.txt : 20211109
<SEC-HEADER>0001209191-21-063582.hdr.sgml : 20211109
<ACCEPTANCE-DATETIME>20211109154712
ACCESSION NUMBER:		0001209191-21-063582
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211108
FILED AS OF DATE:		20211109
DATE AS OF CHANGE:		20211109

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BILODEAU STEVEN J
		CENTRAL INDEX KEY:			0001082964

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04298
		FILM NUMBER:		211391841

	MAIL ADDRESS:	
		STREET 1:		C/O COHU, INC.
		STREET 2:		12367 CROSTHWAITE CIRCLE
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064

	FORMER NAME:	
		FORMER CONFORMED NAME:	BILODEAU STEVEN J /NY
		DATE OF NAME CHANGE:	19990330

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COHU INC
		CENTRAL INDEX KEY:			0000021535
		STANDARD INDUSTRIAL CLASSIFICATION:	INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS [3825]
		IRS NUMBER:				951934119
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1225

	BUSINESS ADDRESS:	
		STREET 1:		12367 CROSTHWAITE CIRCLE
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064-6817
		BUSINESS PHONE:		858-848-8100

	MAIL ADDRESS:	
		STREET 1:		12367 CROSTHWAITE CIRCLE
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064-6817

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COHU ELECTRONICS INC
		DATE OF NAME CHANGE:	19720809
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-11-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000021535</issuerCik>
        <issuerName>COHU INC</issuerName>
        <issuerTradingSymbol>COHU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001082964</rptOwnerCik>
            <rptOwnerName>BILODEAU STEVEN J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12367 CROSTHWAITE CIRCLE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>POWAY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92064</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6944</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>36.65</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>82843</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This transaction was made pursuant to a Rule 10(b)5-1 trading plan adopted by Mr. Bilodeau on August 31, 2021 (&quot;The Plan&quot;).</footnote>
        <footnote id="F2">The shares with respect to this transaction were at an exact price of $36.65.</footnote>
        <footnote id="F3">Number of shares includes 4,001 Restricted Stock Units (RSUs) and 53,320 Deferred Stock Units (DSUs). Each RSU represents a contingent right to receive one share of Cohu, Inc. Common Stock upon vesting (assuming continued service to the Board). Each DSU is equal to one share of Cohu, Inc. Common Stock and will be settled through the issuance of common stock upon (i) the reporting person's termination of service as a director or (ii) at certain specified future dates.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jeffrey D. Jones, by Power of Attorney</signatureName>
        <signatureDate>2021-11-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
