SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Reiss Joel (Last) (First) (Middle) TRANSDIGM GROUP INCORPORATED 1301 E. 9TH ST., SUITE 3000 (Street) CLEVELAND OH 44114 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/26/2023	3. Issuer Name and Ticker or Trading Symbol TransDigm Group INC [ TDG ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Co-Chief Operating Officer	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	3,600	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option	09/30/2016	11/06/2025	Common Stock	69,300	226.34	D
Stock Option	09/30/2021	11/08/2027	Common Stock	65,000	284.97	D
Stock Option	09/30/2019	04/25/2029	Common Stock	43,000	476.81	D
Stock Option	09/30/2020	11/15/2029	Common Stock	32,100	559.78	D
Stock Option	09/30/2022	11/12/2031	Common Stock	28,600	643	D
Stock Option	09/30/2023	11/09/2032	Common Stock	6,500	582.8	D

Explanation of Responses:

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Gabrielle Feuer as attorney-in-fact	06/01/2023
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and
appoints each of Jessica L. Warren, Gabrielle Feuer, Rachel L. Quinlan and
Adrienne McFaye
signing singly, the undersigned's true and lawful attorney-in-fact to:

     1. execute for and on behalf of the undersigned, in the undersigned's
     capacity as an officer and/or director of TransDigm Group Incorporated,
     a Delaware corporation (the "Company"), Form ID and Forms 3, 4 and 5 in
     accordance with Section 16(a) of the Securities Exchange Act of 1934 and
     the rules thereunder; and

     2. do and perform any and all acts for and on behalf of the undersigned
     which may be necessary or desirable to complete and execute any such Form
     ID and Form 3, 4 or 5, complete and execute any amendment or amendments
     thereto, and timely file such form with the United States Securities and
     Exchange Commission and any stock exchange or similar authority.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might
or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confining all that such attorney-in-fact, or
such attorney-in-fact's substitute or substitutes, shall lawfully do or cause
to be done by virtue of this power of attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of the date set forth below.

/s/ Joel Reiss
Print name: Joel Reiss
Date: May 26, 2023