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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
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 daysStein Kevin MPresident & CEOSSale−2.17K$755.65−$1.64M−100.0%0 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 1032 daysStaer JohnDirectorSSale−100$733.52−$73.4K−52.4%91 afterAmended
Mar 16, 2023 (view filing)Mar 142 daysWynne SarahChief Accounting OfficerSSale−180$720.41−$129.7K−20.5%700 after
Mar 17, 2023 (view filing)Mar 152 daysHowley W NicholasDirectorSSale−6.50K$701.38−$4.56M−23.2%21.5K after13 lots
Apr 19, 2023 (view filing)Apr 172 daysHowley W NicholasDirectorSSale−6.50K$753.17−$4.90M−23.2%21.5K after8 lots
May 10, 2023 (view filing)May 82 daysHowley W NicholasDirectorSSale−9.64K$775.26−$7.48M−30.9%21.5K after2 lots
May 16, 2023 (view filing)May 151 dayHowley W NicholasDirectorSSale−3.25K$800.76−$2.60M−13.1%21.5K after5 lots
Jun 12, 2023 (view filing)Jun 93 daysStein Kevin MPresident & CEOSSale−11.8K$798.14−$9.44M−100.0%0 after12 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 16, 2023 (view filing)Jun 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$812.69−$2.44M−45.5%3.60K after8 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
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 18, 2023 (view filing)Jul 171 dayHowley W NicholasDirectorSSale−3.25K$890.05−$2.89M−13.1%21.5K after5 lots
Jul 31, 2023 (view filing)Jul 283 daysHowley W NicholasDirectorSSale−5.56K$900.00−$5.00M−20.5%21.5K after
Aug 1, 2023 (view filing)Jul 311 dayHowley W NicholasDirectorSSale−3.04K$900.00−$2.74M−12.4%21.5K after
Aug 1, 2023 (view filing)Aug 1Same dayHowley W NicholasDirectorSSale−40.2K$900.00−$36.2M−65.1%21.5K after
Aug 10, 2023 (view filing)Aug 91 dayStein Kevin MPresident & CEOSSale−11.8K$878.41−$10.4M−100.0%0 after16 lots10b5-1
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
Sep 8, 2023 (view filing)Sep 6-82 daysSmall Robert JDirectorSSale−21.1K$883.65−$18.6M−2.1%983.4K after4 lots
Sep 8, 2023 (view filing)Sep 71 dayWynne SarahChief Financial OfficerSSale−5.42K$883.16−$4.79M−88.6%700 after8 lots10b5-1
Sep 14, 2023 (view filing)Sep 122 daysSmall Robert JDirectorSSale−2.97K$880.47−$2.61M−0.3%980.7K after2 lots
Sep 15, 2023 (view filing)Sep 15Same dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$872.68−$2.62M−45.5%3.60K after8 lots10b5-1
Oct 17, 2023 (view filing)Oct 161 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$862.38−$2.59M−45.5%3.60K after7 lots
Nov 16, 2023 (view filing)Nov 151 dayHowley W NicholasDirectorSSale−7.06K$995.01−$7.02M−24.7%21.5K after8 lots10b5-1
Nov 16, 2023 (view filing)Nov 151 dayReiss JoelCo-Chief Operating OfficerSSale−3.00K$994.84−$2.98M−45.5%3.60K after7 lots10b5-1
Nov 16, 2023 (view filing)Nov 14-152 daysValladares JorgeDirectorSSale−16.0K$996.32−$15.9M−59.3%11.0K after4 lots
Nov 20, 2023 (view filing)Nov 16-204 daysSmall Robert JDirectorSSale−106.3K$966.23−$102.7M−10.7%886.0K after22 lots
Nov 22, 2023 (view filing)Nov 211 daySmall Robert JDirectorSSale−23.2K$969.93−$22.5M−2.6%865.1K after10 lots
Nov 27, 2023 (view filing)Nov 225 daysHennessy Sean PDirectorSSale−3.65K$971.15−$3.54M−9.7%33.9K after6 lots
Dec 13, 2023 (view filing)Dec 121 daySmall Robert JDirectorSSale−18.5K$997.90−$18.5M−10.4%158.9K after4 lots
Dec 14, 2023 (view filing)Dec 122 daysLisman MichaelCo-Chief Operating OfficerSSale−12.0K$997.51−$12.0M−83.9%2.31K after9 lots
Dec 15, 2023 (view filing)Dec 132 daysHowley W NicholasDirectorSSale−1.82K$1,015.02−$1.85M−7.8%21.5K after10b5-1
Dec 18, 2023 (view filing)Dec 153 daysReiss JoelCo-Chief Operating OfficerSSale−3.00K$994.84−$2.98M−45.5%3.60K after7 lots10b5-1
Dec 18, 2023 (view filing)Dec 153 daysHowley W NicholasDirectorSSale−6.30K$987.07−$6.21M−22.6%21.5K after12 lots10b5-1
Jan 2, 2024 (view filing)Dec 29, 20234 daysHowley W NicholasDirectorSSale−23.7K$1,015.00−$24.0M−52.3%21.5K after10b5-1
Jan 12, 2024 (view filing)Jan 10-112 daysHowley W NicholasDirectorSSale−53.0K$1,015.04−$53.7M−71.1%21.5K after4 lots10b5-1
Jan 18, 2024 (view filing)Jan 162 daysHowley W NicholasDirectorSSale−3.53K$1,022.27−$3.61M−14.1%21.5K after12 lots10b5-1
Jan 18, 2024 (view filing)Jan 162 daysReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,022.29−$3.07M−45.5%3.60K after11 lots10b5-1
Feb 13, 2024 (view filing)Feb 13Same dayGraff MichaelDirectorSSale−3.46K$1,108.16−$3.83M−41.5%4.88K after3 lots
Feb 20, 2024 (view filing)Feb 155 daysSmall Robert JDirectorSSale−4.48K$1,155.98−$5.18M−17.6%20.9K after
Feb 20, 2024 (view filing)Feb 155 daysReiss JoelCo-Chief Operating OfficerSSale−3.00K$1,140.48−$3.42M−45.5%3.60K after11 lots10b5-1
Feb 20, 2024 (view filing)Feb 15-165 daysHowley W NicholasDirectorSSale−5.52K$1,149.81−$6.35M−20.4%21.5K after16 lots10b5-1
Feb 22, 2024 (view filing)Feb 211 dayHowley W NicholasDirectorSSale−9.38K$1,165.00−$10.9M−30.3%21.5K after10b5-1
Feb 23, 2024 (view filing)Feb 212 daysWynne SarahChief Financial OfficerSSale−5.85K$1,159.00−$6.78M−89.3%700 after5 lots
Feb 26, 2024 (view filing)Feb 224 daysHowley W NicholasDirectorSSale−59.2K$1,173.75−$69.5M−73.3%21.5K after6 lots10b5-1
Feb 27, 2024 (view filing)Feb 23-264 daysLisman MichaelCo-Chief Operating OfficerSSale−16.0K$1,196.76−$19.1M−100.0%0 after23 lots
Feb 28, 2024 (view filing)Feb 262 daysValladares JorgeDirectorSSale−9.48K$1,191.99−$11.3M−46.3%11.0K after7 lots
Feb 28, 2024 (view filing)Feb 262 daysValladares JorgeDirectorSSale−4.85K$1,191.99−$5.79M−100.0%0 after13 lots