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TransDigm Group Incorporated

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TransDigm Group Incorporated insider trading

TransDigm Group Incorporated files with the SEC as a Aircraft Parts & Auxiliary Equipment, NEC company headquartered in Cleveland, OH. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent TDG insider transactions

One insider traded TDG on the open market on Sep 15, 2026 — 24 sales worth $4.2M, of which every one was pre-scheduled under a 10b5-1 plan.

Bought
—
Sold
$4.2M

24 of 24 on a 10b5-1 plan

Net
−$4.2M
Insiders
1

Open-market purchases (code P) and sales (code S) from TransDigm Group Incorporated's own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 22, 2026. The live dashboard shows new filings the moment they clear.

Every TDG Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

TDG insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 11 insiders traded TDG on the open market: 8 purchases worth $3.8M and 967 sales worth $1.1B, 808 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 8 purchases ($3.8M) and 481 sales ($464.7M), by 7 insiders.

QuarterBoughtSold
Q2 2026—−$52.6M120 sales · 80 on a plan
Q1 2026+$1.2M2 buys−$179.9M161 sales · all on a plan
Q4 2025+$2.6M6 buys−$198.8M117 sales · 112 on a plan
Q3 2025—−$33.3M83 sales · 64 on a plan
Q2 2025—−$221.4M108 sales · 85 on a plan
Q1 2025—−$238.6M190 sales · 130 on a plan
Q4 2024—−$105.8M87 sales · 75 on a plan
Q3 2024—−$57.2M101 sales · all on a plan
Largest purchase
+$1.2M of TDG by Lisman Michael (President & CEO · Director) on Feb 06, 2026.
Largest sale
−$101.1M of TDG by Small Robert J (Director) on Dec 09, 2025.

Open-market transactions through Jun 30, 2026most recent first

  • Howley W Nicholas

    Director

    −$2.5M

    Jun 18, 2026

    1,925 sh · $1,318.84

  • Howley W Nicholas

    Director

    −$1.8M

    Jun 18, 2026

    1,376 sh · $1,316.86

  • Howley W Nicholas

    Director

    −$1.3M

    Jun 18, 2026

    964 sh · $1,314.60

  • Howley W Nicholas

    Director

    −$1.2M

    Jun 18, 2026

    893 sh · $1,317.75

  • Howley W Nicholas

    Director

    −$1.1M

    Jun 18, 2026

    827 sh · $1,319.90

  • Howley W Nicholas

    Director

    −$980.2K

    Jun 18, 2026

    745 sh · $1,315.71

  • Howley W Nicholas

    Director

    −$895.9K

    Jun 18, 2026

    677 sh · $1,323.27

  • Howley W Nicholas

    Director

    −$499.3K

    Jun 18, 2026

    377 sh · $1,324.30

  • Howley W Nicholas

    Director

    −$403.2K

    Jun 18, 2026

    305 sh · $1,321.91

  • Howley W Nicholas

    Director

    −$366.7K

    Jun 18, 2026

    275 sh · $1,333.62

  • Howley W Nicholas

    Director

    −$354.1K

    Jun 18, 2026

    268 sh · $1,321.13

  • Howley W Nicholas

    Director

    −$340.7K

    Jun 18, 2026

    257 sh · $1,325.63

  • Howley W Nicholas

    Director

    −$325.5K

    Jun 18, 2026

    245 sh · $1,328.46

  • Howley W Nicholas

    Director

    −$265.4K

    Jun 18, 2026

    200 sh · $1,326.80

  • Howley W Nicholas

    Director

    −$235.3K

    Jun 18, 2026

    176 sh · $1,337.05

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

TransDigm Group Incorporated company record

SEC industry classification
Aircraft Parts & Auxiliary Equipment, NEC
Headquarters
Cleveland, OH
Incorporated in
DE
Listed on
NYSE
SEC Central Index Key
0001260221
Previously filed as
TD HOLDING CORP

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Industrials sector shown above.

After insiders bought TDG

What the stock actually did in the 90 days following each open-market purchase

Don't check TDG — let it ping you

Get told the moment an insider moves on TDG

Pro watches TransDigm Group Incorporated for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add TDG to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track TDG on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read TDG insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are TDG insiders buying or selling?
Between Sep 15, 2026 and Sep 15, 2026, 1 TransDigm Group Incorporated insider made no open-market purchases and 24 sales worth $4.2M, a net sale of $4.2M. 24 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much TDG stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 11 TransDigm Group Incorporated insiders made 8 open-market purchases worth $3.8M and 967 sales worth $1.1B. 808 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: 8 purchases ($3.8M) and 481 sales ($464.7M). The largest purchase was Lisman Michael buying $1.2M on Feb 06, 2026. The largest sale was Small Robert J selling $101.1M on Dec 09, 2025.
What was the largest recent TDG insider trade?
Reiss Joel (Co-Chief Operating Officer) sold $419K of TDG stock on Sep 15, 2026 at about $1094.06 a share, under a pre-scheduled 10b5-1 plan.
When did an insider last buy TDG shares?
No open-market purchase by a TransDigm Group Incorporated insider appears in the filings from Sep 15, 2026 to Sep 15, 2026 — every recorded open-market transaction in that period was a sale. Before that, the most recent purchase in SEC's data was Small Robert J buying $1.3K on Feb 25, 2026.
Where does TDG insider trading data come from?
From the Form 4 filings TransDigm Group Incorporated's officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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