Transdigm Group Incorporated

Last updated September 27, 2026

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Organization details

Legal name: Transdigm Group Incorporated
Former names: TD Holding Corp
Ownership: Public
Status: Active
Sector (GICS): Industrials
SIC code: 3728 — Aircraft Parts & Auxiliary Equipment, NEC
Jurisdiction of incorporation: Delaware
Headquarters city: Cleveland
Headquarters state / province: Ohio
Headquarters country: United States
Fiscal year end: September
Ticker symbol: TDG
Primary stock exchange: NYSE

Identifiers

SEC CIK: 0001260221
EIN: 51-0484716
Wikidata ID: Q7833612

Board of directors

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David Barr · Director
Since 2023
Gary E. Mccullough · Director
Since 2023
Irina Igorevna Krasik · Director
Since 2026
Jane M. Cronin · Director
Since 2023
John Staer · Director
Since 2023
Jorge Valladares · Director
Since 2023
Kevin M. Stein · Director
Since 2025
Michael Graff · Director
Since 2023
Michael Lisman · Director · President & CEO
Since 2025
Michele Santana · Director
Since 2023
Peter Palmer · Director
Since 2025
Robert J. Small · Director
Since 2023
Sean P. Hennessy · Director
Since 2023
W. Nicholas Howley · Director
Since 2023

Chief executives

Michael Lisman · President & CEO

Dates unknown

Director election results

Annual meeting of March 5, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

6 of this board's directors also sit on 4 other boards.

Shared director Other board Same sector

Perimeter Solutions SA
via Jorge Valladares, Sean P. Hennessy and W. Nicholas Howley
Axalta Coating Systems Ltd.
via Kevin M. Stein
Cleveland-Cliffs Inc.
via Jane M. Cronin
Commercial Metals Company
via Gary E. Mccullough

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $3,838,005; 8 purchases by 2 insiders
Sold, last 12 months: $491,918,251; 545 sales by 5 insiders

Date	Insider	Transaction	Shares	Price	Value
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Option exercise	+4,100	$284.97	$1,168,377
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−20	$1,112.27	$22,245
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−100	$1,113.58	$111,358
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−100	$1,114.82	$111,482
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−50	$1,116.02	$55,801
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−60	$1,117.11	$67,027
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−100	$1,119.01	$111,901
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−30	$1,120.30	$33,609
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−60	$1,121.58	$67,295
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−131	$1,123.09	$147,124
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−306	$1,124.00	$343,944
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−600	$1,125.00	$675,001
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−278	$1,125.86	$312,989
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−305	$1,127.01	$343,739
Oct 15, 2026	Reiss Joel Officer (Co-Chief Operating Officer)	Open-market sale	−120	$1,127.90	$135,348

Peers

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Questions about Transdigm Group Incorporated

Who is the CEO of Transdigm Group Incorporated?

Michael Lisman is Transdigm Group Incorporated's President & CEO.

How many directors are on Transdigm Group Incorporated's board?

Transdigm Group Incorporated's board has 14 directors: David Barr, Gary E. Mccullough, Irina Igorevna Krasik, Jane M. Cronin, John Staer, Jorge Valladares, Kevin M. Stein, Michael Graff, Michael Lisman, Michele Santana and 4 others.

Are Transdigm Group Incorporated insiders buying or selling shares?

Over the last 12 months, Transdigm Group Incorporated insiders bought $3.8 million of shares in 8 purchases and sold $491.9 million of shares in 545 sales on the open market, as reported to the SEC on Forms 4 and 5.

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