<SEC-DOCUMENT>0001593968-20-002436.txt : 20201231
<SEC-HEADER>0001593968-20-002436.hdr.sgml : 20201231
<ACCEPTANCE-DATETIME>20201231122924
ACCESSION NUMBER:		0001593968-20-002436
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200814
FILED AS OF DATE:		20201231
DATE AS OF CHANGE:		20201231

REPORTING-OWNER:	

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

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12505
		FILM NUMBER:		201428189

	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
<SEQUENCE>1
<FILENAME>primary_01.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-08-14</periodOfReport>

    <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>2020-08-14</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2453</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.11</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2453</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Holding via Husband</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This form 4 is late reporting from August 14, 2020 of a purchase by the spouse of an executive. Reporting Person inadvertently did not report the purchase of shares at that time.</footnote>
        <footnote id="F2">The price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from 6.09 to 6.12, inclusive. The reporting person undertakes to provide to Core Molding Technologies, Inc. or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote to this Form 4.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John Zimmer, as attorney-in-fact</signatureName>
        <signatureDate>2020-12-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
