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Filing Details

Accession Number:: 0000904454-10-000525
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-12-08 14:49:39
Reporting Period:: 2010-12-06

Filing Date:: 2010-12-08
Accepted Time:: 2010-12-08 14:49:39
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1260221	Transdigm Group Inc	TDG	Aircraft Parts & Auxiliary Equipment, Nec (3728)	510484716

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1234544	J Robert Small	C/O Berkshire Partners Llc 200 Clarendon Street, 35Th Floor Boston MA 02116		Yes	No	No	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-12-06	91,200	$69.66	4,330,762	No	4	P	Indirect	By Berkshire Entities
Common Stock	Acquisiton	2010-12-06	25,800	$69.66	129,300	No	4	P	Indirect	By Stockbridge Partners LLC

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By Berkshire Entities
No	4	P	Indirect	By Stockbridge Partners LLC

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	5,000	Direct

Footnotes

Represents shares acquired by certain of the Berkshire Entities (as defined below), consistent with their investment objective of achieving capital appreciation by investing primarily in marketable securities. This Form 4 has been filed because the Reporting Person is a director of the Issuer and a managing member of, or managing member of the general partner of, each of the Berkshire Entities. As such, the Reporting Person may be deemed to have shared voting and/or dispositive power over the shares held by the Berkshire Entities. However, the Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.
Owned by Berkshire Fund VII, L.P., Berkshire Fund VII-A, L.P., Berkshire Investors LLC, Berkshire Investors III LLC, Stockbridge Fund, L.P., Stockbridge Fund M, L.P. and Stockbridge Absolute Return Fund, L.P. (collectively, the "Berkshire Entities"). Seventh Berkshire Associates LLC is the general partner of each of Berkshire Fund VII, L.P. and Berkshire Fund VII-A, L.P. Stockbridge Associates LLC is the general partner of Stockbridge Fund, L.P., Stockbridge Fund M, L.P. and Stockbridge Absolute Return Fund, L.P. The Reporting Person is a managing member of each of Seventh Berkshire Associates LLC, Stockbridge Associates LLC, Berkshire Investors LLC and Berkshire Investors III LLC. As such, the Reporting Person may be deemed to have shared voting and/or dispositive power over the shares held by such entities. However, the Reporting Person disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest therein.
Shares held by Stockbridge Partners LLC on behalf of a managed account over which it has shared voting and sole dispositive power. The Reporting Person is a managing member of Stockbridge Partners LLC. As such, the Reporting Person may be deemed to have shared voting and/or dispositive power over these shares. However, the Reporting Person disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest, if any, therein.