<SEC-DOCUMENT>0001628280-23-027381.txt : 20230803
<SEC-HEADER>0001628280-23-027381.hdr.sgml : 20230803
<ACCEPTANCE-DATETIME>20230803204332
ACCESSION NUMBER:		0001628280-23-027381
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230801
FILED AS OF DATE:		20230803
DATE AS OF CHANGE:		20230803

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SLESSOR MIKE
		CENTRAL INDEX KEY:			0001590177

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50307
		FILM NUMBER:		231141890

	MAIL ADDRESS:	
		STREET 1:		7005 SOUTHFRONT ROAD
		CITY:			LIVERMORE
		STATE:			CA
		ZIP:			94551

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FORMFACTOR INC
		CENTRAL INDEX KEY:			0001039399
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				133711155
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1230

	BUSINESS ADDRESS:	
		STREET 1:		7005 SOUTHFRONT ROAD
		CITY:			LIVERMORE
		STATE:			CA
		ZIP:			94551
		BUSINESS PHONE:		9252904000

	MAIL ADDRESS:	
		STREET 1:		7005 SOUTHFRONT ROAD
		CITY:			LIVERMORE
		STATE:			CA
		ZIP:			94551
</SEC-HEADER>
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<DESCRIPTION>FORM 4
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        <issuerName>FORMFACTOR INC</issuerName>
        <issuerTradingSymbol>FORM</issuerTradingSymbol>
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            <rptOwnerName>SLESSOR MIKE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7005 SOUTHFRONT ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LIVERMORE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94551</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO</officerTitle>
            <otherText></otherText>
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                <value>2023-08-01</value>
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                    <value>0</value>
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    <footnotes>
        <footnote id="F1">The Restricted Stock Units vest in three annual installments on each August 2 of 2023, 2024, and 2025 and will be settled into shares of common stocks on or following the vesting dates.</footnote>
        <footnote id="F2">Represents the number of shares withheld upon vesting of restricted stock units to cover tax withholding obligations.</footnote>
        <footnote id="F3">This represents a restricted stock unit award granted on 08/01/22 that vests annually over three years from grant date.</footnote>
        <footnote id="F4">If the reporting person's employment is terminated for any reason before an applicable vesting date, all options and/or restricted stock units that have not yet vested shall be forfeited without consideration, except as provided in the change of control severance agreement and any other agreements regarding award vesting and exercisability between the reporting person and Issuer, which agreements or form agreements are filed with the SEC.</footnote>
        <footnote id="F5">The Restricted Stock Units vest in three annual installments on each August 2 of 2022, 2023 and 2024 and will be settled into shares of common stocks on or following the vesting dates.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: /s/ Stan Finkelstein, Attorney-in-Fact for Mike Slessor</signatureName>
        <signatureDate>2023-08-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
