[Form 4] TransDigm Group INC Insider Trading Activity

Rhea-AI Filing Summary

David Barr, a director of TransDigm Group Inc. (TDG), reported a Form 4 disclosing a non‑derivative acquisition of company common stock on 09/19/2025. The filing shows an acquisition coded A for "36(1)" shares with a listed price of $1,288.13 and reports 32,138 shares beneficially owned following the transaction. The explanation states the shares were received in lieu of a semi‑annual director fee under the companys Director Share Plan. The form is signed by an attorney‑in‑fact on 09/22/2025.

Positive

• Director compensation delivered as equity under the Director Share Plan aligns the reporting person's interests with shareholders
• Transaction is routine and transparent, with an explicit explanation and a signed filing by attorney‑in‑fact

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Director received equity in lieu of cash fees, aligning pay with shareholder interests without indicating material change in holdings.

The filing documents a routine director compensation payment made under an established Director Share Plan rather than an open‑market purchase. The reported increment—shown as "36(1)" shares—appears small relative to the total beneficial ownership reported (32,138 shares), suggesting no material shift in control or stake. This treatment supports alignment of interests between management and shareholders while conserving company cash.

Securities Analyst

TL;DR: A routine in‑kind director fee resulted in a modest increase in direct holdings; no material dilution or trading signal is present.

The transaction code is A and the explanation explicitly states the shares were issued instead of a cash fee per the Director Share Plan. The filing lists a price of $1,288.13 and reports 32,138 shares after the grant. This is a standard Section 16 filing reflecting compensation mechanics, not a market purchase or sale that would imply a change in insider sentiment.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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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OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

BARR DAVID

(Last) (First) (Middle)

8 GOVERNORS RD

(Street)

BRONXVILLE NY 10708

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
09/19/2025

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/19/2025		A		36(1)	A	$1,288.13	32,138	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Receipt of stock in lieu of payment of semi-annual director fee, based on fair market value in accordance with the Director Share Plan.

	/s/ Gabrielle Feuer as attorney-in-fact	09/22/2025
	** 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 4 (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 transaction did David Barr report on Form 4 for TDG?

The Form 4 reports a non‑derivative acquisition (coded A) of "36(1)" common stock shares on 09/19/2025 received in lieu of a semi‑annual director fee.

How many TDG shares does David Barr beneficially own after the reported transaction?

The filing shows 32,138 shares beneficially owned following the reported transaction.

Why were the shares issued to David Barr?

The explanation states the shares were issued as payment in lieu of a semi‑annual director fee under the company's Director Share Plan.

When was the Form 4 signed and filed?

The form includes a signature by an attorney‑in‑fact, dated 09/22/2025, with the transaction dated 09/19/2025.

Does the Form 4 indicate a market purchase or sale by the director?

No; the filing explicitly states the shares were received in lieu of a fee under the Director Share Plan, not purchased or sold on the open market.