Who Owns TransDigm?

TransDigm was formed in 1993 as TD Holding Corporation, funded with $10 million of initial equity from Howley, Peacock, and Kelso & Company. The founding deal was a leveraged buyout of four industrial aerospace businesses from IMO Industries: Adel Fasteners, Aero Products Component Services, Controlex Corporation, and Wiggins Connectors. The renamed TransDigm set up in Richmond Heights, Ohio.

The playbook established at founding never really changed. TransDigm buys businesses that make proprietary, engineered aircraft components where a single supplier holds most or all of a niche. Because its parts are designed into airframes and engines, they enjoy decades of aftermarket sales for spares and replacements at high margins. Acquisition after acquisition followed that template, more than 100 businesses since 1993, each integrated through the same three value drivers: profitable new business, cost structure improvement, and value-based pricing.

The company went public on the NYSE in 2006 under ticker TDG. Growth through the 2010s was relentless: annual special dividends funded by new debt, a stock that compounded at private-equity-like rates, and a portfolio that swelled past four dozen operating units. The 2019 acquisition of Esterline for roughly $4 billion was its largest deal, adding sensors, connectors, and avionics businesses.

The pandemic delivered the model's only serious test. Air travel collapsed in 2020 and aftermarket revenue fell sharply, but the company came through without restructuring, and aftermarket sales recovered with traffic through 2021 and 2022.

Under CEO Kevin Stein, who ran the company from 2017 to 2025, TransDigm paid out a series of special dividends including $75 per share in October 2024 and $90 per share in September 2025, roughly $9.6 billion returned in twelve months. In 2025 it acquired Servotronics, the Elma, New York maker of servo valves, through a tender offer completed July 1, and, closing just after fiscal year-end on October 6, Simmonds Precision Products, the fuel measurement and sensing business.

Fiscal 2025, ended September 30, 2025, produced net sales of $8,831 million, up 11 percent, net income of $2,074 million, and EBITDA As Defined of $4,760 million at a 53.9 percent margin. Mike Lisman, previously Co-Chief Operating Officer, became President and CEO on October 1, 2025. Under his first year at the helm, the company has kept the same operating cadence: steady aftermarket growth, continued bolt-on acquisitions, and aggressive return of capital.