TransDigm (TDG) director updates Form 4/A with trust-held shares unchanged

Rhea-AI Filing Summary

TransDigm Group director W. Nicholas Howley reported an amended insider filing reflecting an “other” type transaction with no change in share ownership. The filing shows 0 common shares were transacted and 21,547.513 shares are held indirectly through the W. Nicholas Howley Family Trust u/a/d 4/23/99.

Insider Trade Summary 10b5-1

1 transaction reported

Mixed 1 txn

Insider Howley W Nicholas

Role null

Type	Security	Shares	Price	Value
Other	Common Stock	0	$0.00	--

Holdings After Transaction: Common Stock — 21,547.513 shares (Indirect, W. Nicholas Howley Family Trust u/a/d 4/23/99)

Footnotes (1)

Key Figures

Shares transacted: 0.0000 shares Shares after transaction: 21,547.5130 shares Transaction code: J +2 more

5 metrics

Shares transacted 0.0000 shares Common Stock, code J “other acquisition or disposition” on 2026-06-18

Shares after transaction 21,547.5130 shares Total common shares following transaction, indirect ownership

Transaction code J Classified as other acquisition or disposition, restructuring-type event

Net buy/sell direction neutral transactionSummary netBuySellDirection based on zero shares traded

Restructuring transactions 1 transactionSummary restructuringCount for this filing

Key Terms

Form 4/A, Other acquisition or disposition, indirect ownership, transaction code J, +1 more

5 terms

Form 4/A regulatory

"INSIDER FILING DATA (Form 4/A)"

Form 4/A is an amended filing that corrects or updates an earlier Form 4, the mandatory report that insiders (like company executives, directors, or large shareholders) must file when their ownership stakes change. Think of it as an edited receipt showing who bought or sold stock and when; investors use it to track insider confidence, detect potential conflicts, and spot trading patterns that might signal future company prospects.

Other acquisition or disposition financial

"transaction_code_description": "Other acquisition or disposition""

indirect ownership financial

""ownership_type": "indirect""

transaction code J regulatory

""transaction_code": "J""

family trust financial

"W. Nicholas Howley Family Trust u/a/d 4/23/99"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/24/2026 - 04:58 PM Accepted by SEC EDGAR 06/24/2026 - 04:57 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).

X

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^*

Howley W Nicholas

(Last) (First) (Middle)

1350 EUCLID AVE

SUITE 1600

(Street)

CLEVELAND OHIO 44115

(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)
06/18/2026

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)
06/22/2026

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	06/18/2026		J		0.00	D	$0.00	21,547.513	I	W. Nicholas Howley Family Trust u/a/d 4/23/99

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:

Remarks:

This Form 4/A is being filed to correct an administrative error by the filing agent, Morgan Stanley. The transaction identified in Accession No. 0001352573-26-000008, filed on June 22, 2026, is the sole correct and complete report of the transaction. Accession Nos. 0001352573-26-000009 and 0001352573-26-000010, also filed on June 22, 2026, were duplicate filings made in error and are superseded by this amendment. No additional transactions occurred.

	/s/ Rachel L. Quinlan as attorney in fact for W. Nicholas Howley	06/24/2026
	** 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)

FAQ

What insider activity did TransDigm Group (TDG) report in this Form 4/A?

The amended Form 4 reports an “other” type transaction with no change in share ownership. It shows a restructuring-type entry coded J, with zero common shares transacted and only updated indirect holdings disclosed.

How many TransDigm Group (TDG) shares does W. Nicholas Howley hold after this filing?

After the reported transaction, W. Nicholas Howley is shown holding 21,547.513 common shares. These shares are reported as being held indirectly through the W. Nicholas Howley Family Trust u/a/d 4/23/99.

Did W. Nicholas Howley buy or sell TransDigm Group (TDG) shares in this Form 4/A?

No common shares were bought or sold in this filing. The transaction code J indicates an “other acquisition or disposition” with 0.0000 shares transacted and a neutral net buy/sell share count.

What does transaction code J mean in this TransDigm Group (TDG) insider filing?

Transaction code J is described as an “Other acquisition or disposition”. In this case, it is categorized as restructuring, with zero shares changing hands and the total reported holdings remaining unchanged.

Are the TransDigm Group (TDG) shares held directly by W. Nicholas Howley?

The filing shows the 21,547.513 shares as held indirectly. The nature of ownership field lists the W. Nicholas Howley Family Trust u/a/d 4/23/99 as the holding entity.