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TransDigm Group INC

TDG
Exchange
NYSE
Industry
Aircraft Parts & Auxiliary Equipment, NEC
SEC CIK
0001260221

In the last 90 days, TransDigm Group INC insiders filed 0 open-market purchases and 6 sales; 1,146 institutions reported holding it in 13F filings for Q2 2026, worth $70.0B in total; superinvestors Third Point and Lone Pine Capital hold it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by TransDigm Group INC insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
6 filings
2 insiders, $38.7M in total
Insiders trading
2
Net value
−$38.7M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for TransDigm Group INC, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for TransDigm Group INC
NameTitleLast reported holdingLast filingFilings, past year
Small Robert JDirector5,677Sep 22, 20265
Palmer PeterDirector4,064Sep 21, 20263
Howley W NicholasDirector239Sep 21, 202615
Krasik Irina IgorevnaDirector13Sep 21, 20261
Santana MicheleDirector805Sep 21, 20263
McCullough Gary EDirector993Sep 21, 20263
Hennessy Sean PDirector33,836Sep 21, 20263
Graff MichaelDirector1,717Sep 21, 20264
Cronin Jane M.Director734Sep 21, 20263
Barr DavidDirector32,225Sep 21, 20263
Reiss JoelCo-Chief Operating Officer3,600Sep 16, 202615
Murphy Patrick JosephCo-Chief Operating Officer2,515Feb 25, 20267
Lisman MichaelPresident & CEO3,259Feb 9, 20263
Wynne SarahChief Financial Officer4,894Feb 6, 20262
Stein Kevin MDirector8,158IndirectFeb 3, 202613
Vadiee ArmaniGC, CCO, Secretary–Nov 6, 20251
Valladares JorgeDirector0IndirectMay 14, 20250
Warren Jessica LGC, CCO, Secretary575May 13, 20250
Staer JohnDirector91Mar 14, 20230
Dunn MervinDirector1,562Nov 18, 20220
Laubenthal Raymond FDirector156,595Mar 29, 20220
Henderson Robert SExec.V.P.0IndirectDec 9, 20210
Terrion Halle FineGC, CCO, Secretary–Nov 16, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Feb 9, 2026 (view filing)Feb 63 daysLisman MichaelPresident & CEOPPurchase+950$1,284.26+$1.22M+41.1%3.26K after
Feb 18, 2026 (view filing)Feb 171 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,293.88−$5.05M−52.0%3.60K after23 lots10b5-1
Feb 20, 2026 (view filing)Feb 182 daysHowley W NicholasDirectorSSale−10.2K$1,307.68−$13.3M−32.1%21.5K after13 lots10b5-1
Feb 27, 2026 (view filing)Feb 252 daysSmall Robert JDirectorPPurchase+1$1,285.00+$1.28K0.0%366.1K after
Mar 17, 2026 (view filing)Mar 161 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,243.70−$4.85M−52.0%3.60K after19 lots10b5-1
Mar 19, 2026 (view filing)Mar 181 dayHowley W NicholasDirectorSSale−10.1K$1,213.05−$12.3M−32.0%21.5K after23 lots10b5-1
Apr 16, 2026 (view filing)Apr 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,280.46−$4.99M−52.0%3.60K after17 lots10b5-1
Apr 21, 2026 (view filing)Apr 201 dayHowley W NicholasDirectorSSale−10.1K$1,265.06−$12.8M−32.0%21.5K after11 lots10b5-1
May 18, 2026 (view filing)May 153 daysReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,154.09−$4.50M−52.0%3.60K after27 lots10b5-1
May 19, 2026 (view filing)May 181 dayHowley W NicholasDirectorSSale−10.1K$1,180.82−$12.0M−32.0%21.5K after25 lots10b5-1
Jun 16, 2026 (view filing)Jun 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,276.78−$4.98M−52.0%3.60K after18 lots
Jun 22, 2026 (view filing)Jun 184 daysHowley W NicholasDirectorSSale−10.1K$1,319.55−$13.4M−32.0%21.5K after22 lots
Jun 22, 2026 (view filing)Jun 184 daysHowley W NicholasDirectorSSale−10.1K$1,319.55−$13.4M−32.0%21.5K after22 lotsDuplicate filing
Jun 22, 2026 (view filing)Jun 184 daysHowley W NicholasDirectorSSale−10.1K$1,319.55−$13.4M−32.0%21.5K after22 lotsDuplicate filing
Jul 17, 2026 (view filing)4:16 PM ETJul 152 daysReiss JoelCo-Chief Operating OfficerSSale−3.49K$1,216.21−$4.24M−46.5%4.01K after29 lots10b5-1
Jul 17, 2026 (view filing)4:17 PM ETJul 152 daysReiss JoelCo-Chief Operating OfficerSSale−414$1,231.11−$509.7K−10.3%3.60K after4 lots10b5-1
Jul 21, 2026 (view filing)4:47 PM ETJul 201 dayHowley W NicholasDirectorSSale−10.1K$1,216.08−$12.3M−32.0%21.5K after12 lots10b5-1
Aug 18, 2026 (view filing)4:26 PM ETAug 171 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,238.76−$4.83M−52.0%3.60K after19 lots10b5-1
Aug 19, 2026 (view filing)4:21 PM ETAug 181 dayHowley W NicholasDirectorSSale−10.1K$1,236.28−$12.5M−32.0%21.5K after14 lots10b5-1
Sep 16, 2026 (view filing)5:09 PM ETSep 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,094.58−$4.27M−52.0%3.60K after27 lots10b5-1