<SEC-DOCUMENT>0001929185-25-000008.txt : 20251017
<SEC-HEADER>0001929185-25-000008.hdr.sgml : 20251017
<ACCEPTANCE-DATETIME>20251017111430
ACCESSION NUMBER:		0001929185-25-000008
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251016
FILED AS OF DATE:		20251017
DATE AS OF CHANGE:		20251017

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hess Janice L.
		CENTRAL INDEX KEY:			0001929185
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10596
		FILM NUMBER:		251399303

	MAIL ADDRESS:	
		STREET 1:		ESCO TECHNOLOGIES INC
		STREET 2:		645 MARYVILLE CENTRE DR., SUITE 300
		CITY:			SAINT LOUIS
		STATE:			MO
		ZIP:			63141

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ESCO TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000866706
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATIONS EQUIPMENT, NEC [3669]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				431554045
		STATE OF INCORPORATION:			MO
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		645 MARYVILLE CENTRE DR., SUITE 300
		CITY:			ST. LOUIS
		STATE:			MO
		ZIP:			63141
		BUSINESS PHONE:		3142137200

	MAIL ADDRESS:	
		STREET 1:		645 MARYVILLE CENTRE DR., SUITE 300
		CITY:			ST. LOUIS
		STATE:			MO
		ZIP:			63141

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ESCO ELECTRONICS CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4-10172025_031026.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-10-16</periodOfReport>

    <issuer>
        <issuerCik>0000866706</issuerCik>
        <issuerName>ESCO TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>ESE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001929185</rptOwnerCik>
            <rptOwnerName>Hess Janice L.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ESCO TECHNOLOGIES INC.</rptOwnerStreet1>
            <rptOwnerStreet2>645 MARYVILLE CENTRE DR., SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>ST LOUIS</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63141</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Share Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-10-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3.3114</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>215.17</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3.3114</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8909.7105</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Restricted Share Units (RSUs) issued in lieu of cash dividends on the RSUs held by the reporting person on the payment date. Each RSU is the economic equivalent of one share of Common Stock. A portion of the RSU representing dividends on unvested shares becomes payable in Common Stock and/or cash when the underlying shares vest, or concurrently with the distribution of the underlying shares if the reporting person has so designated. Any remaining RSUs become payable in common stock upon, or at the election of the reporting person in installments beginning upon, the termination of the reporting person's service as a director or such earlier time as the reporting person may have designated.</footnote>
    </footnotes>

    <remarks>Power of Attorney on file</remarks>

    <ownerSignature>
        <signatureName>/s/ Jeffrey D. Fisher, Attorney-in-Fact</signatureName>
        <signatureDate>2025-10-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
