<SEC-DOCUMENT>0000056978-22-000161.txt : 20221213
<SEC-HEADER>0000056978-22-000161.hdr.sgml : 20221213
<ACCEPTANCE-DATETIME>20221213193537
ACCESSION NUMBER:		0000056978-22-000161
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20221211
FILED AS OF DATE:		20221213
DATE AS OF CHANGE:		20221213

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Chylak Robert Nestor
		CENTRAL INDEX KEY:			0001887782

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-00121
		FILM NUMBER:		221460919

	MAIL ADDRESS:	
		STREET 1:		1005 VIRGINIA DRIVE
		CITY:			FORT WASHINGTON
		STATE:			PA
		ZIP:			19034

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KULICKE & SOFFA INDUSTRIES INC
		CENTRAL INDEX KEY:			0000056978
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				231498399
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1001

	BUSINESS ADDRESS:	
		STREET 1:		23A SERANGOON NORTH AVENUE 5, #01-01
		CITY:			SINGAPORE
		STATE:			U0
		ZIP:			554369
		BUSINESS PHONE:		2157846000

	MAIL ADDRESS:	
		STREET 1:		23A SERANGOON NORTH AVENUE 5, #01-01
		CITY:			SINGAPORE
		STATE:			U0
		ZIP:			554369
</SEC-HEADER>
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            <rptOwnerStreet2></rptOwnerStreet2>
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            <rptOwnerZipCode>19034</rptOwnerZipCode>
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            <officerTitle>Senior Vice President</officerTitle>
            <otherText></otherText>
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    <footnotes>
        <footnote id="F1">Performance Share Units (PSUs) awarded December 11, 2019, achieved a 138% pay-out based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with relative TSR measured over a three-year period. The pay-out was certified, and shares issued on December 11, 2022. Each PSU is convertible to one share of common stock.</footnote>
        <footnote id="F2">Performance Share Units (PSUs) awarded December 11, 2019 achieved a 200% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified and the shares issued on December 11, 2022. Each PSU is convertible into one share of common stock.</footnote>
        <footnote id="F3">Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with issuance of 3,606 shares of common stock arising from payout under the Performance Share Units (PSUs) awarded on December 11, 2019. The payment was certified and the shares were issued on December 11, 2022, each PSU convertible into one share of common stock. These shares were not issued to or sold by the Reporting Person.</footnote>
        <footnote id="F4">Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of a restricted stock unit award (RSU) originally granted on December 11, 2019. On December 11, 2022, 784 shares of common stock had vested under the RSU.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Zi Yao Lim, Attorney-in-Fact for Robert Nestor Chylak</signatureName>
        <signatureDate>2022-12-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
