<SEC-DOCUMENT>0001193125-25-299036.txt : 20251126
<SEC-HEADER>0001193125-25-299036.hdr.sgml : 20251126
<ACCEPTANCE-DATETIME>20251126105510
ACCESSION NUMBER:		0001193125-25-299036
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251117
FILED AS OF DATE:		20251126
DATE AS OF CHANGE:		20251126

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Louis Berkman Investment CO
		CENTRAL INDEX KEY:			0001351834
		ORGANIZATION NAME:           	
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-00898
		FILM NUMBER:		251525872

	BUSINESS ADDRESS:	
		STREET 1:		330 N. SEVENTH STREET
		CITY:			STEUBENVILLE
		STATE:			OH
		ZIP:			43952
		BUSINESS PHONE:		740.283.3722

	MAIL ADDRESS:	
		STREET 1:		330 N. SEVENTH STREET
		CITY:			STEUBENVILLE
		STATE:			OH
		ZIP:			43952

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMPCO PITTSBURGH CORP
		CENTRAL INDEX KEY:			0000006176
		STANDARD INDUSTRIAL CLASSIFICATION:	PUMPS & PUMPING EQUIPMENT [3561]
		ORGANIZATION NAME:           	06 Technology
		EIN:				251117717
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		726 BELL AVENUE
		STREET 2:		SUITE 301
		CITY:			CARNEGIE
		STATE:			PA
		ZIP:			15106
		BUSINESS PHONE:		412-456-4400

	MAIL ADDRESS:	
		STREET 1:		726 BELL AVENUE
		STREET 2:		SUITE 301
		CITY:			CARNEGIE
		STATE:			PA
		ZIP:			15106

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SCREW & BOLT CORP OF AMERICA
		DATE OF NAME CHANGE:	19710518
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-11-17</periodOfReport>

    <issuer>
        <issuerCik>0000006176</issuerCik>
        <issuerName>AMPCO PITTSBURGH CORP</issuerName>
        <issuerTradingSymbol>AP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001351834</rptOwnerCik>
            <rptOwnerName>Louis Berkman Investment CO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>600 GRANT STREET, SUITE 3230</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15219-2704</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>true</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2025-11-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>93000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.67</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3127792</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.70 to $2.57, inclusive. The reporting person undertakes to provide to any security holder of Ampco-Pittsburgh Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jennifer L. Gloff, Treasurer and Chief Financial Officer</signatureName>
        <signatureDate>2025-11-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
