Skip to main content

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
Mar 19, 2025 (view filing)Mar 172 daysHowley W NicholasDirectorSSale−5.47K$1,354.60−$7.41M−20.3%21.5K after12 lots10b5-1
Mar 21, 2025 (view filing)Mar 201 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,360.04−$4.08M−45.5%3.60K after11 lots10b5-1
Apr 15, 2025 (view filing)Apr 15Same dayHowley W NicholasDirectorSSale−5.47K$1,346.30−$7.37M−20.3%21.5K after12 lots10b5-1
Apr 15, 2025 (view filing)Apr 141 dayStein Kevin MPresident & CEOSSale−20.0K$1,329.61−$26.6M−71.0%8.16K after18 lots10b5-1
Apr 21, 2025 (view filing)Apr 21Same dayReiss JoelCo-Chief Operating OfficerSSale−3.30K$1,321.80−$4.36M−47.8%3.60K after13 lots10b5-1
May 5, 2025 (view filing)May 5Same dayHowley W NicholasDirectorSSale−49.2K$1,475.84−$72.7M−69.6%21.5K after5 lots10b5-1
May 13, 2025 (view filing)May 13Same dayWarren Jessica LGC, CCO, SecretarySSale−490$1,425.00−$698.3K−46.0%575 after
May 14, 2025 (view filing)May 13-141 dayValladares JorgeDirectorSSale−10.0K$1,419.91−$14.2M−100.0%0 after15 lots
May 16, 2025 (view filing)May 151 dayHowley W NicholasDirectorSSale−2.74K$1,395.62−$3.82M−11.3%21.5K after7 lots10b5-1
May 20, 2025 (view filing)May 20Same dayHennessy Sean PDirectorSSale−4.70K$1,436.52−$6.75M−12.2%33.7K after5 lots
May 20, 2025 (view filing)May 20Same dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,434.35−$4.30M−45.5%3.60K after6 lots10b5-1
Jun 12, 2025 (view filing)Jun 102 daysSmall Robert JDirectorSSale−45.7K$1,425.01−$65.1M−9.3%444.1K after2 lots
Jun 12, 2025 (view filing)Jun 12Same dayWynne SarahChief Financial OfficerSSale−3.20K$1,452.14−$4.65M−48.5%3.40K after3 lots10b5-1
Jun 13, 2025 (view filing)Jun 13Same dayWynne SarahChief Financial OfficerSSale−1.80K$1,450.00−$2.61M−34.6%3.40K after10b5-1
Jun 18, 2025 (view filing)Jun 162 daysHowley W NicholasDirectorSSale−2.74K$1,444.08−$3.95M−11.3%21.5K after9 lots10b5-1
Jun 20, 2025 (view filing)Jun 20Same dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,424.27−$4.27M−45.5%3.60K after11 lots10b5-1
Jul 15, 2025 (view filing)Jul 15Same dayHowley W NicholasDirectorSSale−2.74K$1,569.86−$4.30M−11.3%21.5K after9 lots10b5-1
Jul 22, 2025 (view filing)Jul 211 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,597.86−$4.79M−45.5%3.60K after13 lots10b5-1
Aug 18, 2025 (view filing)Aug 153 daysHowley W NicholasDirectorSSale−2.74K$1,397.22−$3.82M−11.3%21.5K after12 lots10b5-1
Aug 20, 2025 (view filing)Aug 20Same dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,406.07−$4.22M−45.5%3.60K after11 lots10b5-1
Aug 27, 2025 (view filing)Aug 261 dayGraff MichaelDirectorSSale−1.76K$1,402.10−$2.47M−47.3%1.96K after5 lots
Sep 16, 2025 (view filing)Sep 124 daysSmall Robert JDirectorSSale−5.00K$1,276.98−$6.38M−5.7%83.4K after14 lots
Sep 16, 2025 (view filing)Sep 151 dayHowley W NicholasDirectorSSale−2.74K$1,282.47−$3.51M−11.3%21.5K after11 lots10b5-1
Sep 24, 2025 (view filing)Sep 222 daysReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,276.07−$3.83M−45.5%3.60K after8 lots10b5-1
Oct 15, 2025 (view filing)Oct 15Same dayHowley W NicholasDirectorSSale−2.74K$1,298.87−$3.55M−11.3%21.5K after11 lots10b5-1
Oct 21, 2025 (view filing)Oct 201 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,279.59−$3.84M−45.5%3.60K after9 lots10b5-1
Oct 28, 2025 (view filing)Oct 271 dayMurphy Patrick JosephCo-Chief Operating OfficerSSale−580$1,354.76−$785.8K−35.5%1.05K after10b5-1
Oct 28, 2025 (view filing)Oct 271 dayStein Kevin MDirectorSSale−700$1,360.00−$952.0K−7.9%8.16K after10b5-1
Nov 4, 2025 (view filing)Nov 31 dayMurphy Patrick JosephCo-Chief Operating OfficerSSale−290$1,310.00−$379.9K−21.6%1.05K after10b5-1
Nov 17, 2025 (view filing)Nov 17Same dayHowley W NicholasDirectorSSale−2.74K$1,334.92−$3.65M−11.3%21.5K after14 lots10b5-1
Nov 17, 2025 (view filing)Nov 143 daysLisman MichaelPresident & CEOPPurchase+1.95K$1,339.14+$2.62MNew position1.95K after6 lots
Nov 18, 2025 (view filing)Nov 171 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,340.00−$5.23M−52.0%3.60K after25 lots10b5-1
Nov 19, 2025 (view filing)Nov 181 dayStein Kevin MDirectorSSale−7.19K$1,361.57−$9.79M−46.8%8.16K after5 lots10b5-1
Nov 21, 2025 (view filing)Nov 201 dayStein Kevin MDirectorSSale−1.10K$1,360.89−$1.50M−11.9%8.16K after3 lots10b5-1
Nov 24, 2025 (view filing)Nov 213 daysStein Kevin MDirectorSSale−230$1,360.31−$312.9K−2.7%8.16K after10b5-1
Nov 26, 2025 (view filing)Nov 25-261 dayStein Kevin MDirectorSSale−4.22K$1,360.57−$5.74M−34.1%8.16K after3 lots10b5-1
Dec 1, 2025 (view filing)Nov 283 daysStein Kevin MDirectorSSale−4.59K$1,360.73−$6.25M−36.0%8.16K after3 lots10b5-1
Dec 2, 2025 (view filing)Dec 11 dayMurphy Patrick JosephCo-Chief Operating OfficerSSale−290$1,351.06−$391.8K−21.6%1.05K after10b5-1
Dec 5, 2025 (view filing)Dec 41 dayStein Kevin MDirectorSSale−17.5K$1,362.29−$23.9M−68.2%8.16K after8 lots10b5-1
Dec 9, 2025 (view filing)Dec 9Same daySmall Robert JDirectorSSale−91.0K$1,335.72−$121.5M−57.2%68.1K after2 lots
Dec 11, 2025 (view filing)Dec 101 daySmall Robert JDirectorSSale−4.70K$1,290.19−$6.06M−45.5%5.63K after3 lots
Dec 16, 2025 (view filing)Dec 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,290.52−$5.03M−52.0%3.60K after26 lots10b5-1
Jan 5, 2026 (view filing)Jan 23 daysMurphy Patrick JosephCo-Chief Operating OfficerSSale−290$1,329.03−$385.4K−21.6%1.05K after10b5-1
Jan 6, 2026 (view filing)Jan 51 dayStein Kevin MDirectorSSale−25.0K$1,373.59−$34.3M−75.4%8.16K after21 lots10b5-1
Jan 9, 2026 (view filing)Jan 81 dayStein Kevin MDirectorSSale−17.4K$1,407.25−$24.4M−68.0%8.16K after7 lots10b5-1
Jan 16, 2026 (view filing)Jan 142 daysStein Kevin MDirectorSSale−7.63K$1,406.38−$10.7M−48.3%8.16K after3 lots10b5-1
Jan 16, 2026 (view filing)Jan 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.90K$1,429.92−$5.58M−52.0%3.60K after18 lots10b5-1
Feb 3, 2026 (view filing)Feb 21 dayMurphy Patrick JosephCo-Chief Operating OfficerSSale−290$1,430.10−$414.7K−21.6%1.05K after10b5-1
Feb 3, 2026 (view filing)Feb 21 dayStein Kevin MDirectorSSale−36.9K$1,425.78−$52.6M−65.8%19.2K after22 lots10b5-1
Feb 3, 2026 (view filing)Feb 21 dayStein Kevin MDirectorSSale−11.1K$1,434.49−$15.9M−57.6%8.16K after10 lots10b5-1