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SEC Form 4 research

TransDigm Group INC insider transactions

Inspect TransDigm Group INC's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001260221
Reporting owners
52
Officers and directors
20
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-212026-09-18Palmer PeterA34$1,085Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-18 and its public availability date is 2026-09-21. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent insider disclosures

Inspect all 50 displayed rows: Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

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2026-09-212026-09-18Palmer PeterA34$1,085Not reported
2026-09-212026-09-18Howley W NicholasA126$1,085Not reported
2026-09-212026-09-18Krasik Irina IgorevnaA13$1,085Not reported
2026-09-212026-09-18SMALL ROBERT JA52$1,085Not reported
2026-09-212026-09-18Santana MicheleA34$1,085Not reported
2026-09-212026-09-18MCCULLOUGH GARY EA41$1,085Not reported
2026-09-212026-09-18HENNESSY SEAN PA46$1,085Not reported
2026-09-212026-09-18Graff MichaelA34$1,085Not reported
2026-09-212026-09-18CRONIN JANE M.A34$1,085Not reported
2026-09-212026-09-18BARR DAVIDA46$1,085Not reported
2026-09-162026-09-15Reiss JoelS100$1,091Not reported
2026-09-162026-09-15Reiss JoelS70$1,090.06Not reported
2026-09-162026-09-15Reiss JoelS10$1,088.06Not reported
2026-09-162026-09-15Reiss JoelS120$1,087.49Not reported
2026-09-162026-09-15Reiss JoelS110$1,086.27Not reported
2026-09-162026-09-15Reiss JoelS240$1,084.87Not reported
2026-09-162026-09-15Reiss JoelS170$1,083.67Not reported
2026-09-162026-09-15Reiss JoelS20$1,119Not reported
2026-09-162026-09-15Reiss JoelS20$1,113.37Not reported
2026-09-162026-09-15Reiss JoelS30$1,112.38Not reported
2026-09-162026-09-15Reiss JoelS30$1,108.34Not reported
2026-09-162026-09-15Reiss JoelS40$1,106.69Not reported
2026-09-162026-09-15Reiss JoelS5$1,105.28Not reported
2026-09-162026-09-15Reiss JoelS125$1,104.58Not reported
2026-09-162026-09-15Reiss JoelS210$1,103.44Not reported
2026-09-162026-09-15Reiss JoelS274$1,102.49Not reported
2026-09-162026-09-15Reiss JoelS310$1,082.96Not reported
2026-09-162026-09-15Reiss JoelS166$1,101.52Not reported
2026-09-162026-09-15Reiss JoelS60$1,100.41Not reported
2026-09-162026-09-15Reiss JoelS90$1,099.14Not reported
2026-09-162026-09-15Reiss JoelS150$1,098.41Not reported
2026-09-162026-09-15Reiss JoelS294$1,097.26Not reported
2026-09-162026-09-15Reiss JoelS196$1,096.17Not reported
2026-09-162026-09-15Reiss JoelS225$1,095.11Not reported
2026-09-162026-09-15Reiss JoelS383$1,094.06Not reported
2026-09-162026-09-15Reiss JoelS282$1,093.1Not reported
2026-09-162026-09-15Reiss JoelS170$1,092.13Not reported
2026-08-202026-08-18Howley W NicholasS190$1,241.14Not reported
2026-08-202026-08-18Howley W NicholasS1,313$1,240.42Not reported
2026-08-202026-08-18Howley W NicholasS3,980$1,239.17Not reported
2026-08-202026-08-18Howley W NicholasS520$1,238.08Not reported
2026-08-202026-08-18Howley W NicholasS250$1,236.89Not reported
2026-08-202026-08-18Howley W NicholasS140$1,236.12Not reported
2026-08-202026-08-18Howley W NicholasS270$1,234.69Not reported
2026-08-202026-08-18Howley W NicholasS450$1,233.3Not reported
2026-08-202026-08-18Howley W NicholasS1,055$1,232.01Not reported
2026-08-202026-08-18Howley W NicholasS830$1,231.12Not reported
2026-08-202026-08-18Howley W NicholasS570$1,230.02Not reported
2026-08-202026-08-18Howley W NicholasS290$1,229.09Not reported
2026-08-202026-08-18Howley W NicholasS70$1,227.62Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 40 displayed rows: Officers and directors in the directory

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CRONIN JANE M.000168822213
LEE KEWSONG0001220640150
Stein Kevin M0001431675420
BARR DAVID0001239309241
Borowski Michael D00015471023
Ciolli Vince00015930581
DRIES WILLIAM00011764126
Dunn Mervin000129880334
Feil Alex00017281648
Graff Michael0001299926344
Henderson Robert S0001352561376
HENNESSY SEAN P000120350763
Howley W Nicholas00013525733,127
Iversen Bernt G II0001366888409
Jones Roger000147576224
Kruse Kevin0001300010203
Laubenthal Raymond F0001356052222
Leary John F0001352592381
Lisman Michael000174827542
Littleton W Todd00013525931
Maroney Sean P00013607177
McClelland Ralph0001366870132
Murphy Patrick Joseph00020798045
Palmer Peter00015427659
Paradie Terrance M00014141296
Peacock Douglas W000135256245
Reiss Joel0001656109568
Riley James M0001352590193
Rodriguez Albert J0001352560637
Rufus Gregory0001352589267
Santana Michele000161538222
Skulina James000153714548
Skurka Howard000135251015
SMALL ROBERT J0001234544653
Staer John00015436307
Tenerowicz John00016394511
Terrion Halle Fine000175298435
Valladares III Jorge L.000143289297
Warren Jessica L00019636488
Wynne Sarah000175825225

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.