Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Our common stock is traded on the New York Stock Exchange, or NYSE, under the ticker symbol “TDG.”

Holders

As of October 16, 2026, there were 27 holders of record of our common stock. We estimate that there were approximately 824,000 beneficial owners of our common stock as of that date, including stockholders whose shares are held in street name by banks and brokers.

Performance Graph

Set forth below is a line graph comparing the cumulative total return of a hypothetical investment in the shares of common stock of TD Group with the cumulative total return of a hypothetical investment in each of the S&P 500 Index and the S&P Aerospace & Defense Select Industry Index. An investment of $100 (with reinvestment of all dividends) is assumed to have been made in our common stock and in each of the indexes on September 30, 2021, and its relative performance is tracked through September 30, 2026.

The following performance graph and related information shall not be deemed “soliciting material” nor to be “filed” with the SEC, nor shall such information be incorporated by reference into any future filings under the Securities Act of 1933 or the Securities Exchange Act of 1934, each as amended, except to the extent we specifically incorporate it by reference into such filing.

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN*

Among TransDigm Group Inc., the S&P 500 Index and S&P Aerospace & Defense Select Industry Index

*$100 invested on 9/30/2021 in stock or index, including reinvestment of dividends.

Copyright 2026 Standard & Poor’s, a division of S&P Global. All rights reserved.

			9/30/2021						9/30/2022						9/30/2023						9/30/2024						9/30/2025						9/30/2026
TransDigm Group Inc.			100.00						86.40						138.80						243.53						253.73						208.41
S&P 500 Index			100.00						84.53						102.80						140.17						164.84						190.78
S&P Aerospace & Defense Select Industry Index			100.00						77.43						95.47						135.31						204.38						201.76

Purchases of Equity Securities by the Issuer or Affiliated Purchaser

The following table presents information about repurchases of TransDigm Group Inc. common stock made by the Company during the fourth 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)
June 28, 2026 - July 25, 2026						24,540						$	1,196.74					24,540						$	3,951
July 26, 2026 - August 22, 2026						132,660						1,242.31						132,660						3,787
August 23, 2026 - September 30, 2026						662,856						1,130.02						662,856						3,038
Total						820,056						$	1,150.18					820,056

(1)						On January 27, 2022, the Board authorized a stock repurchase program permitting repurchases of up to $2.2 billion of the Company’s outstanding shares (referred to herein as the “existing stock repurchase program”), replacing the $650 million stock repurchase program. In November 2025, the Board increased the authorization under the existing stock repurchase program by $5.0 billion. Repurchases are subject to any restrictions in the Credit Agreement and the indentures governing the Subordinated Notes and Secured Notes. There is no expiration date for the existing stock repurchase program.