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TransDigm Group Inc. planned insider sales

In the last twelve months insiders at TransDigm Group Inc. filed 24 Form 144 notices of planned sales, 397,686 shares worth $530.7 million at the time of filing, from 6 sellers. The latest, filed 15 September 2026: Joel Reiss (officer), 8,000 shares worth $8.9 million, planned for around 15 September 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
15 September 2026Joel ReissOfficer8,000$8.9 million15 September 20268,000 shares from 15 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
7 August 2026The Fortuna Trust U/T/A DTD 06/01/2018Director37,690$47.6 million7 August 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
18 June 2026Howley W NicholasOfficer30,396$40.1 million18 June 202650,660 shares from 18 June 2026Stifel Nicolaus & Company IncStock Option ExerciseForm 144
15 June 2026Joel ReissOfficer11,700$14.7 million15 June 202611,700 shares from 15 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
18 February 2026Howley W NicholasOfficer40,564$53.0 million18 February 202640,564 shares from 18 February 2026Stifel Nicolaus & Company IncStock Option ExerciseForm 144
17 February 2026Joel ReissOfficer15,600$20.1 million17 February 202615,600 shares from 17 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
2 February 2026Patrick J. MurphyOfficer1,160$1.7 million2 February 2026290 shares from 2 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
2 February 2026The Fortuna Trust U/T/A DTD 06/01/2018Director48,000$68.5 million2 February 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
14 January 2026The Fortuna Trust U/T/A DTD 06/01/2018Director7,627$10.5 million14 January 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
8 January 2026The Fortuna Trust U/T/A DTD 06/01/2018Director17,373$24.1 million8 January 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
5 January 2026The Fortuna Trust U/T/A DTD 06/01/2018Director25,000$34.0 million5 January 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
2 January 2026Patrick J. MurphyOfficer290$385,6562 January 2026290 shares from 2 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
10 December 2025Robert SmallDirector4,700$6.1 million10 December 202595,653 shares from 9 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of options under a registered planForm 144
9 December 2025Stockbridge Partners LLCMay be deemed affiliate100,000$134.7 million9 December 2025No matching Form 4 saleGoldman, Sachs & Co.Open market purchasesForm 144
4 December 2025The Fortuna Trust U/T/A DTD 06/01/2018Director17,526$23.4 million4 December 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
1 December 2025Patrick J. MurphyOfficer290$394,4491 December 2025290 shares from 1 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
28 November 2025The Fortuna Trust U/T/A DTD 06/01/2018Director4,592$6.2 million28 November 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
26 November 2025The Fortuna Trust U/T/A DTD 06/01/2018Director30$40,57626 November 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
25 November 2025The Fortuna Trust U/T/A DTD 06/01/2018Director4,187$5.6 million25 November 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
21 November 2025The Fortuna Trust U/T/A DTD 06/01/2018Officer230$305,41021 November 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
20 November 2025The Fortuna Trust U/T/A DTD 06/01/2018Officer1,104$1.5 million20 November 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
18 November 2025The Fortuna Trust U/T/A DTD 06/01/2018Officer7,191$9.6 million18 November 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
17 November 2025Howley W NicholasOfficer2,736$3.7 million17 November 20252,736 shares from 17 November 2025Stifel Nicolaus & Company IncStock Option ExerciseForm 144
17 November 2025Joel ReissOfficer11,700$15.7 million17 November 202511,700 shares from 17 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?