Item 1A. RISK FACTORS

In addition to the other information set forth in this report, you should carefully consider the risk factors disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the fiscal year ended September 30, 2025, filed on November 12, 2025. There have been no material changes to the risk factors described in the Form 10-K.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS: PURCHASES OF EQUITY SECURITIES BY THE ISSUER

The following table presents information about repurchases of TransDigm Group Inc. common stock made by the Company during the first quarter of fiscal year 2026 (in millions, except shares and average price per share data):


				Total Number of Shares	Dollar Value of Shares
	Total Number	Average Price		Repurchased as Part	That May Yet Be
	of Shares	Paid		of Publicly Announced	Purchased Under the
Period	Repurchased	Per Share		Plans or Programs	Plans or Programs (1)
October 1, 2025 - October 25, 2025	79,959	$	1,249.90	79,959	$	5,688
October 26, 2025 - November 22, 2025	—	—		—	5,688
November 23, 2025 - December 27, 2025	5,253	1,247.05		5,253	5,681
Total	85,212	$	1,249.73	85,212



(1)						On January 27, 2022, our Board of Directors authorized a new stock repurchase program permitting repurchases of our outstanding shares not to exceed $2.2 billion in the aggregate, subject to any restrictions specified in the Credit Agreement and indentures governing the existing Subordinated and Secured Notes (referred to herein as the “existing stock repurchase program”), replacing the $650 million stock repurchase program. In November 2025, the Board of Directors authorized an additional $5.0 billion in share repurchases of common stock permissible under the Company’s existing stock repurchase program. There is no expiration date for the existing stock repurchase program.

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