<SEC-DOCUMENT>0001593968-20-002327.txt : 20201204
<SEC-HEADER>0001593968-20-002327.hdr.sgml : 20201204
<ACCEPTANCE-DATETIME>20201204171138
ACCESSION NUMBER:		0001593968-20-002327
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201130
FILED AS OF DATE:		20201204
DATE AS OF CHANGE:		20201204

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ANDERSON RENEE R
		CENTRAL INDEX KEY:			0001764040

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12505
		FILM NUMBER:		201370623

	MAIL ADDRESS:	
		STREET 1:		800 MANOR PARK DR
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43228

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CORE MOLDING TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0001026655
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS PRODUCTS, NEC [3089]
		IRS NUMBER:				311481870
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		800 MANOR PARK DRIVE
		STREET 2:		P O BOX 28183
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43228
		BUSINESS PHONE:		8006666960

	MAIL ADDRESS:	
		STREET 1:		800 MANOR PARK DR
		STREET 2:		P O BOX 28183
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43228

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CORE MATERIALS CORP
		DATE OF NAME CHANGE:	19961107
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_01.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2020-11-30</periodOfReport>

    <dateOfOriginalSubmission>2020-12-02</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001026655</issuerCik>
        <issuerName>CORE MOLDING TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>CMT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001764040</rptOwnerCik>
            <rptOwnerName>ANDERSON RENEE R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>800 MANOR PARK DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COLUMBUS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43228-9762</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>EVP, Human Resources</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-11-30</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>400</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>70542</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The date in Column 2 is the earliest transaction date. These shares were purchased over multiple days, 11/30/2020 and 12/1/2020, inclusive. The reporting person undertakes to provide to Core Molding Technologies, Inc. or the staff of the Securities Exchange Commission, upon request.</footnote>
        <footnote id="F2">This amendment is to correct the price for the reported transaction, which was incorrectly stated in the initial Form 4 filed December 2, 2020.The price is $11.00 instead of $4,400.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John Zimmer, as attorney-in-fact</signatureName>
        <signatureDate>2020-12-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
