<SEC-DOCUMENT>0001972481-23-000130.txt : 20231115
<SEC-HEADER>0001972481-23-000130.hdr.sgml : 20231115
<ACCEPTANCE-DATETIME>20231115162744
ACCESSION NUMBER:		0001972481-23-000130
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231115
DATE AS OF CHANGE:		20231115

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TransDigm Group INC
		CENTRAL INDEX KEY:			0001260221
		STANDARD INDUSTRIAL CLASSIFICATION:	AIRCRAFT PART & AUXILIARY EQUIPMENT, NEC [3728]
		IRS NUMBER:				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:		231410945

	BUSINESS ADDRESS:	
		STREET 1:		1301 EAST 9TH STREET
		STREET 2:		SUITE 3000
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44114
		BUSINESS PHONE:		216 706 2960

	MAIL ADDRESS:	
		STREET 1:		1301 EAST 9TH STREET
		STREET 2:		SUITE 3000
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44114

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

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Howley W Nicholas
		CENTRAL INDEX KEY:			0001352573

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O TRANSDIGM INC.
		STREET 2:		1301 EAST NINTH STREET, SUITE 3710
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44114
</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:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001352573</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001260221</issuerCik>
      <issuerName>TransDigm Group INC</issuerName>
      <secFileNumber>001-32833</secFileNumber>
      <issuerAddress>
        <com:street1>1301 EAST 9TH STREET</com:street1>
        <com:street2>SUITE 3000</com:street2>
        <com:city>CLEVELAND</com:city>
        <com:stateOrCountry>OH</com:stateOrCountry>
        <com:zipCode>44114</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>216 706 2960</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Howley W Nicholas</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Stifel Investment</name>
        <address>
          <com:street1>One Financial Plaza 501 North Broadway</com:street1>
          <com:city>Saint Louis</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63102</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>21180</noOfUnitsSold>
      <aggregateMarketValue>21110953.00</aggregateMarketValue>
      <noOfUnitsOutstanding>55314104</noOfUnitsOutstanding>
      <approxSaleDate>11/15/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Stock Option</securitiesClassTitle>
      <acquiredDate>11/06/2015</acquiredDate>
      <natureOfAcquisitionTransaction>option exercise</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>123517</amountOfSecuritiesAcquired>
      <paymentDate>11/15/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>11/15/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>08/11/2022</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ Dominick Iadicicco, as a duly authorized representative of STIFEL, as attorney-in-fact for Nicholas W Howley</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
