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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
Aug 17, 2023 (view filing)Aug 152 daysReiss JoelCo-Chief Operating OfficerSSale−3.00K$853.76−$2.56M−45.5%3.60K after12 lots10b5-1
Aug 10, 2023 (view filing)Aug 91 dayStein Kevin MPresident & CEOSSale−11.8K$878.41−$10.4M−100.0%0 after16 lots10b5-1
Aug 1, 2023 (view filing)Aug 1Same dayHowley W NicholasDirectorSSale−40.2K$900.00−$36.2M−65.1%21.5K after
Aug 1, 2023 (view filing)Jul 311 dayHowley W NicholasDirectorSSale−3.04K$900.00−$2.74M−12.4%21.5K after
Jul 31, 2023 (view filing)Jul 283 daysHowley W NicholasDirectorSSale−5.56K$900.00−$5.00M−20.5%21.5K after
Jul 18, 2023 (view filing)Jul 171 dayHowley W NicholasDirectorSSale−3.25K$890.05−$2.89M−13.1%21.5K after5 lots
Jul 18, 2023 (view filing)Jul 171 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$889.75−$2.67M−45.5%3.60K after5 lots10b5-1
Jul 12, 2023 (view filing)Jul 102 daysStein Kevin MPresident & CEOSSale−11.8K$884.27−$10.5M−100.0%0 after10 lots10b5-1
Jun 16, 2023 (view filing)Jun 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$812.69−$2.44M−45.5%3.60K after8 lots10b5-1
Jun 16, 2023 (view filing)Jun 151 dayHowley W NicholasDirectorSSale−3.25K$812.77−$2.64M−13.1%21.5K after7 lots
Jun 12, 2023 (view filing)Jun 93 daysStein Kevin MPresident & CEOSSale−11.8K$798.14−$9.44M−100.0%0 after12 lots10b5-1
May 16, 2023 (view filing)May 151 dayHowley W NicholasDirectorSSale−3.25K$800.76−$2.60M−13.1%21.5K after5 lots
May 10, 2023 (view filing)May 82 daysHowley W NicholasDirectorSSale−9.64K$775.26−$7.48M−30.9%21.5K after2 lots
Apr 19, 2023 (view filing)Apr 172 daysHowley W NicholasDirectorSSale−6.50K$753.17−$4.90M−23.2%21.5K after8 lots
Mar 17, 2023 (view filing)Mar 152 daysHowley W NicholasDirectorSSale−6.50K$701.38−$4.56M−23.2%21.5K after13 lots
Mar 16, 2023 (view filing)Mar 142 daysWynne SarahChief Accounting OfficerSSale−180$720.41−$129.7K−20.5%700 after
Mar 14, 2023 (view filing)Feb 1032 daysStaer JohnDirectorSSale−100$733.52−$73.4K−52.4%91 afterAmended
Mar 14, 2023 (view filing)Feb 933 daysValladares JorgeCOOSSale−821$761.15−$624.9K−6.9%11.0K afterAmended
Mar 14, 2023 (view filing)Feb 933 daysStein Kevin MPresident & CEOSSale−2.17K$755.65−$1.64M−100.0%0 afterAmended
Mar 14, 2023 (view filing)Feb 1626 daysLisman MichaelChief Financial OfficerSSale−1.47K$752.99−$1.11M−38.9%2.31K afterAmended
Mar 14, 2023 (view filing)Feb 933 daysHowley W NicholasDirectorSSale−300$760.70−$228.2K−1.4%21.5K afterAmended
Feb 28, 2023 (view filing)Feb 244 daysSmall Robert JDirectorSSale−4.44K$739.22−$3.28M−7.2%57.6K after6 lots
Feb 21, 2023 (view filing)Feb 165 daysLisman MichaelChief Financial OfficerSSale−10.9K$749.39−$8.19M−74.3%3.78K afterFrom original4 lots
Feb 17, 2023 (view filing)Feb 152 daysHowley W NicholasDirectorSSale−6.50K$754.78−$4.91M−23.2%21.5K after8 lots
Feb 14, 2023 (view filing)Feb 104 daysStaer JohnDirectorSSale−4.60K$731.30−$3.36M−96.0%191 afterFrom original3 lots
Feb 13, 2023 (view filing)Feb 94 daysValladares JorgeCOOSSale−31.2K$755.64−$23.6M−72.5%11.8K afterFrom original11 lots
Feb 13, 2023 (view filing)Feb 94 daysStein Kevin MPresident & CEOSSale−36.6K$749.14−$27.4M−94.4%2.17K afterFrom original8 lots
Feb 13, 2023 (view filing)Feb 94 daysHowley W NicholasDirectorSSale−9.70K$753.70−$7.31M−30.7%21.8K afterFrom original11 lots
Feb 13, 2023 (view filing)Feb 10-133 daysSmall Robert JDirectorSSale−151.6K$736.32−$111.6M−9.7%1.41M after22 lots
Feb 13, 2023 (view filing)Feb 9-104 daysSmall Robert JDirectorSSale−254.8K$739.04−$188.3M−14.1%1.56M after28 lots
Jan 18, 2023 (view filing)Jan 171 dayHowley W NicholasDirectorSSale−6.50K$685.24−$4.45M−23.2%21.5K after7 lots
Jan 13, 2023 (view filing)Jan 112 daysValladares JorgeCOOSSale−20.0K$667.41−$13.3M−64.5%11.0K after10 lots
Dec 19, 2022 (view filing)Dec 154 daysHowley W NicholasDirectorSSale−6.51K$614.49−$4.00M−23.2%21.5K afterFrom original10 lots
Nov 18, 2022 (view filing)Nov 162 daysDunn MervinDirectorSSale−4.48K$612.74−$2.74M−74.1%1.56K after3 lots
Nov 17, 2022 (view filing)Nov 152 daysHowley W NicholasDirectorSSale−6.50K$620.35−$4.03M−23.2%21.5K after10 lots
Oct 19, 2022 (view filing)Oct 172 daysHowley W NicholasDirectorSSale−11.5K$528.07−$6.07M−34.8%21.5K after9 lots
Sep 19, 2022 (view filing)Sep 154 daysHowley W NicholasDirectorSSale−11.5K$592.97−$6.82M−34.8%21.5K after14 lots
Sep 8, 2022 (view filing)Sep 71 dayStaer JohnDirectorSSale−3.65K$604.27−$2.21M−97.6%91 after3 lots
Aug 30, 2022 (view filing)Aug 264 daysCronin Jane M.DirectorPPurchase+8.62$643.87+$5.55K+2.2%396.62 after
Aug 17, 2022 (view filing)Aug 17Same dayWynne SarahChief Accounting OfficerSSale−2.25K$670.65−$1.51M−78.9%600 after
Aug 16, 2022 (view filing)Aug 151 dayHennessy Sean PDirectorSSale−4.48K$678.14−$3.04M−11.7%33.9K after2 lots
Aug 16, 2022 (view filing)Aug 151 dayHowley W NicholasDirectorSSale−11.5K$675.31−$7.77M−34.8%21.5K after7 lots
Aug 15, 2022 (view filing)Aug 114 daysStein Kevin MPresident & CEOSSale−35.5K$661.68−$23.5M−100.0%0 after11 lots
Jul 18, 2022 (view filing)Jul 153 daysHowley W NicholasDirectorSSale−11.5K$540.70−$6.22M−34.8%21.5K after6 lots
Jun 16, 2022 (view filing)Jun 151 dayHowley W NicholasDirectorSSale−11.5K$539.63−$6.21M−34.8%21.5K after11 lots
Jun 3, 2022 (view filing)May 2311 daysSmall Robert JDirectorPPurchase+28.5K$565.00+$16.1M+1.2%2.42M afterAmended16 lotsDuplicate filing
Jun 3, 2022 (view filing)May 1915 daysSmall Robert JDirectorPPurchase+19.4K$544.09+$10.6M+11.7%185.1K afterAmended12 lotsDuplicate filing
May 23, 2022 (view filing)May 23Same daySmall Robert JDirectorPPurchase+28.5K$565.00+$16.1M+1.2%2.42M after16 lots
May 23, 2022 (view filing)May 194 daysSmall Robert JDirectorPPurchase+19.4K$544.09+$10.6M+11.7%185.1K after12 lots
May 17, 2022 (view filing)May 161 dayHowley W NicholasDirectorSSale−11.5K$556.61−$6.40M−34.8%21.5K after15 lots