[Form 3] TransDigm Group INC Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

TransDigm Group (TDG) director filed an initial ownership report (Form 3) for an event on 10/23/2025.

The filing lists 4,000 shares of common stock (direct) and multiple stock options. Notable grants include 22,100 options at $559.78 (exercisable 09/30/2023, expiring 11/15/2029) and 17,160 options at $643 (exercisable 09/30/2025, expiring 11/12/2031). Additional options include 2,600 at $582.8 and 4,730 at $869.73.

Some options are held indirectly by a Family Trust (3,000 and 2,375 options at $476.81, expiring 04/25/2029). The report notes it was filed late by 2 days due to administrative delays.

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^*

Palmer Peter

(Last) (First) (Middle)

TRANSDIGM GROUP, INC.

1350 EUCLID AVE., SUITE 1600

(Street)

CLEVELAND OH 44115

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/23/2025

3. Issuer Name and Ticker or Trading Symbol
TransDigm Group INC [ TDG ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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	4,000	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	09/30/2025	11/12/2031	Common Stock	17,160	$643	D
Stock Option	09/30/2026	11/09/2032	Common Stock	2,600	$582.8	D
Stock Option	09/30/2027	11/02/2033	Common Stock	4,730	$869.73	D
Stock Option	09/30/2023	11/15/2029	Common Stock	22,100	$559.78	D
Stock Option	09/30/2020	04/25/2029	Common Stock	3,000	$476.81	I	By Family Trust
Stock Option	09/30/2020	04/25/2029	Common Stock	2,375	$476.81	I	By Family Trust

Explanation of Responses:

Remarks:

Filed late by 2 days due to administrative delays.

	/s/ Rachel L. Quinlan as attorney in fact for Peter Palmer	11/05/2025
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did TransDigm (TDG) disclose in this insider filing?

A director filed a Form 3 initial ownership report listing 4,000 common shares (direct) and several stock option awards.

How many TransDigm (TDG) shares does the director own directly?

The director reported 4,000 shares of common stock held directly.

What are key TransDigm (TDG) stock option holdings reported?

Notable positions include 22,100 options at $559.78 (exp. 11/15/2029) and 17,160 options at $643 (exp. 11/12/2031).

Are any TransDigm (TDG) securities held indirectly?

Yes. 3,000 and 2,375 options at $476.81 are held indirectly by a Family Trust (exp. 04/25/2029).

Was the TransDigm (TDG) filing timely?

The report states it was filed late by 2 days due to administrative delays.

What is the event date for this TransDigm (TDG) Form 3?

The event requiring the statement is dated 10/23/2025.