TransDigm director awarded 46 shares as fee

TransDigm director Sean P. Hennessy received common stock as a semi-annual fee under the Director Share Plan, increasing his direct holdings.

Rhea-AI Filing Summary

TransDigm Group INC (symbol: TDG) is the issuer of record for a Form 4 filing submitted to the SEC. HENNESSY SEAN P reported acquisition or exercise transactions in this Form 4 filing.

TransDigm Group INC (TDG) reported that director Sean P. Hennessy received an award of 46 shares of Common Stock on September 18, 2026. The shares were issued as stock in lieu of payment of a semi-annual director fee, based on fair market value under the company’s Director Share Plan.

Following this equity award, Hennessy directly holds 33,836.09 shares of TransDigm common stock. No transactions in this filing were reported as made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Grant/Award: 46 shares

Grant/Award 1 txn

Insider HENNESSY SEAN P

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	46	$1,085.00	$50K

Holdings After Transaction: Common Stock — 33,836.09 shares (Direct)

Footnotes (1)

1. F1. Receipt of stock in lieu of payment of semi-annual director fee, based on fair market value in accordance with the Director Share Plan.

Key Figures

Shares awarded: 46 shares Award price per share: $1,085.00 per share Shares owned after transaction: 33,836.09 shares

3 metrics

Shares awarded 46 shares Common Stock grant to director on September 18, 2026

Award price per share $1,085.00 per share Fair market value used for semi-annual director fee stock in lieu of cash

Shares owned after transaction 33,836.09 shares Director’s direct holdings of TransDigm common stock following the award

Key Terms

Director Share Plan, fair market value, semi-annual director fee

3 terms

Director Share Plan financial

"in accordance with the Director Share Plan"

fair market value financial

"based on fair market value in accordance with the Director Share Plan"

The price a willing buyer and a willing seller would agree on for an asset or security when neither is under pressure and both have access to the same information. Think of it as the market’s neutral estimate of what something is worth, like the price two neighbors would settle on for a car after comparing similar listings. Investors care because fair market value guides buying and selling decisions, tax reporting, portfolio valuation, and how accurately company assets are reflected in financial statements.

semi-annual director fee financial

"Receipt of stock in lieu of payment of semi-annual director fee"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did TDG director Sean P. Hennessy report?

He reported receiving 46 shares of TransDigm common stock on September 18, 2026 as a grant or award, classified as an acquisition of non-derivative securities.

Was the TDG insider transaction a market purchase or part of compensation?

It was part of compensation. The footnote states it was the receipt of stock in lieu of payment of a semi-annual director fee, based on fair market value under the Director Share Plan, not an open-market purchase.

What price per share was used for Sean P. Hennessy’s TDG stock award?

The award reflects a price of $1,085.00 per share for the 46 shares of TransDigm common stock, determined based on fair market value in accordance with the Director Share Plan.

How many TDG shares does Sean P. Hennessy own after this transaction?

After the September 18, 2026 award, Sean P. Hennessy directly owns 33,836.09 shares of TransDigm common stock, as reported in the filing.

Was the TDG insider transaction made under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan is affirmed for this transaction; it is reported as a compensation-related stock receipt instead.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 09/21/2026 - 04:12 PM Accepted by SEC EDGAR 09/21/2026 - 04:12 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

HENNESSY SEAN P

(Last) (First) (Middle)

1280 RUE SAINT GEORGE

(Street)

WESTLAKE OHIO 44145

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/18/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/18/2026		A		46(1)	A	$1,085	33,836.09	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.

Remarks:

	/s/ Rachel L. Quinlan as attorney in fact for Sean Hennessy	09/21/2026
	** 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.
* Form 4: SEC 1474 (03-26)