<SEC-DOCUMENT>0001950047-25-008963.txt : 20251117
<SEC-HEADER>0001950047-25-008963.hdr.sgml : 20251117
<ACCEPTANCE-DATETIME>20251117163306
ACCESSION NUMBER:		0001950047-25-008963
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251117
DATE AS OF CHANGE:		20251117

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TransDigm Group INC
		CENTRAL INDEX KEY:			0001260221
		STANDARD INDUSTRIAL CLASSIFICATION:	AIRCRAFT PART & AUXILIARY EQUIPMENT, NEC [3728]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				510484716
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-32833
		FILM NUMBER:		251491466

	BUSINESS ADDRESS:	
		STREET 1:		1350 EUCLID AVENUE
		STREET 2:		SUITE 1600
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44115
		BUSINESS PHONE:		216 706 2960

	MAIL ADDRESS:	
		STREET 1:		1350 EUCLID AVENUE
		STREET 2:		SUITE 1600
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44115

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TD HOLDING CORP
		DATE OF NAME CHANGE:	20030818

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Reiss Joel
		CENTRAL INDEX KEY:			0001656109
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		1350 EUCLID AVE
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44115
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001656109</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001260221</issuerCik>
            <issuerName>TRANSDIGM GROUP INCORPORATED</issuerName>
            <secFileNumber>001-32833</secFileNumber>
            <issuerAddress>
                <ns2:street1>1350 Euclid Avenue, Suite 1600</ns2:street1>
                <ns2:city>Cleveland</ns2:city>
                <ns2:stateOrCountry>OH</ns2:stateOrCountry>
                <ns2:zipCode>44115</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>2167062960</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>JOEL REISS</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>11700</noOfUnitsSold>
            <aggregateMarketValue>15685020.00</aggregateMarketValue>
            <noOfUnitsOutstanding>56318584</noOfUnitsOutstanding>
            <approxSaleDate>11/17/2025</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/17/2025</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>11700</amountOfSecuritiesAcquired>
            <paymentDate>11/17/2025</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>JOEL B REISS</name>
                <address>
                    <ns2:street1>1350 Euclid Avenue, Suite 1600</ns2:street1>
                    <ns2:city>Cleveland</ns2:city>
                    <ns2:stateOrCountry>OH</ns2:stateOrCountry>
                    <ns2:zipCode>44115</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/20/2025</saleDate>
            <amountOfSecuritiesSold>3000</amountOfSecuritiesSold>
            <grossProceeds>3838757.38</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>JOEL B REISS</name>
                <address>
                    <ns2:street1>1350 Euclid Avenue, Suite 1600</ns2:street1>
                    <ns2:city>Cleveland</ns2:city>
                    <ns2:stateOrCountry>OH</ns2:stateOrCountry>
                    <ns2:zipCode>44115</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>09/22/2025</saleDate>
            <amountOfSecuritiesSold>3000</amountOfSecuritiesSold>
            <grossProceeds>3828204.43</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>JOEL B REISS</name>
                <address>
                    <ns2:street1>1350 Euclid Avenue, Suite 1600</ns2:street1>
                    <ns2:city>Cleveland</ns2:city>
                    <ns2:stateOrCountry>OH</ns2:stateOrCountry>
                    <ns2:zipCode>44115</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>08/20/2025</saleDate>
            <amountOfSecuritiesSold>3000</amountOfSecuritiesSold>
            <grossProceeds>4218208.06</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale.&#13;
</remarks>
        <noticeSignature>
            <noticeDate>11/17/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>08/12/2025</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Joel Reiss</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
