TransDigm Group INC SEC Filing

A shareholder of TDG has given notice of intent to sell 100,000 shares of common stock through Goldman, Sachs & Co., with an aggregate market value of $134,717,000.

Rhea-AI Filing Summary

A shareholder of TDG has given notice of intent to sell 100,000 shares of common stock through Goldman, Sachs & Co., with an aggregate market value of $134,717,000. The notice states that there are 56,318,584 shares of this common stock outstanding and that the proposed sale is to be made on the NYSE on or about 12/09/2025.

In addition, the disclosure shows that Stockbridge Partners LLC sold 5,000 shares of the same common stock in the past three months, on 09/12/2025, for gross proceeds of $6,384,923.50. The seller represents that they are not aware of any undisclosed material adverse information about the issuer’s current or prospective operations.

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Accepted by SEC EDGAR 12/09/2025 - 09:35 AM EST Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001505183
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	TransDigm Group INC
SEC File Number	001-32833
Address of Issuer	1350 Euclid Avenue, Suite 1600 Cleveland OHIO 44115
Phone	216-706-2960
Name of Person for Whose Account the Securities are To Be Sold	Stockbridge Partners LLC
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	May be deemed affiliate

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Goldman, Sachs & Co. 200 West Street New York NY 10282-2198	100000	134717000.00	56318584	12/09/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	12/06/2010	Open market purchases	Open market purchases			100000	12/06/2010	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Stockbridge Partners LLC 200 Clarendon Street 35th Floor Boston MA 02116	Common Stock	09/12/2025	5000	6384923.50

144: Remarks and Signature

Remarks	Stockbridge Partners LLC is deemed to be the beneficial owner of the Common Stock held through a separate managed account and through Stockbridge Fund, L.P. Regarding the "Securities To Be Sold" Table, the dates of acquisition and payment of the Common Stock varied, commencing on the date reported in the Table. Stockbridge Partners LLC is signing this form on behalf of the separate managed account and Stockbridge Fund, L.P.
Date of Notice	12/09/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	STOCKBRIDGE PARTNERS LLC, By: BPSP, L.P., its Managing Member, By: Berkshire Partners Holdings LLC, its General Partner, Kenneth S. Bring, its M.D.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)