<SEC-DOCUMENT>0001793229-21-000078.txt : 20210823
<SEC-HEADER>0001793229-21-000078.hdr.sgml : 20210823
<ACCEPTANCE-DATETIME>20210823163417
ACCESSION NUMBER:		0001793229-21-000078
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210820
FILED AS OF DATE:		20210823
DATE AS OF CHANGE:		20210823

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Klapstein Julie D
		CENTRAL INDEX KEY:			0001518668

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39228
		FILM NUMBER:		211197397

	MAIL ADDRESS:	
		STREET 1:		1239 FRUIT COVE ROAD NORTH
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32259

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MultiPlan Corp
		CENTRAL INDEX KEY:			0001793229
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				843536151
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		115 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003
		BUSINESS PHONE:		(212) 780-2000

	MAIL ADDRESS:	
		STREET 1:		115 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Churchill Capital Corp III
		DATE OF NAME CHANGE:	20200127

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Butler Acquisition Corp
		DATE OF NAME CHANGE:	20191105
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_162975084371607.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-08-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001793229</issuerCik>
        <issuerName>MultiPlan Corp</issuerName>
        <issuerTradingSymbol>MPLN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001518668</rptOwnerCik>
            <rptOwnerName>Klapstein Julie D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MULTIPLAN CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>115 FIFTH AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10003</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-08-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.9964</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30105</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.98 to $6.00, inclusive. The reporting person undertakes to provide to MultiPlan Corporation, any security holder of MultiPlan Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/  Jeffrey Doctoroff, attorney-in-fact</signatureName>
        <signatureDate>2021-08-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
