TDG
Transdigm Group Incorporated
1,076.00$
-0.4%
vs. previous close
Closing price · As of: Sep 17, 2026
Ownership
Ownership Structure
Who owns Transdigm Group Incorporated (TDG)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.5% of the shares are freely tradable; institutional investors hold 98.2%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
98.2%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
0.4%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.5%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
2.2%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
55Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Capital Research & Mgmt Co - Division 3 | 9.16 | 5,062,682 | -7.9 | 06/30/2026 |
| BlackRock Inc | 8.32 | 4,601,252 | +7.0 | 03/31/2026 |
| Capital World Investors | 7.73 | 4,274,109 | -8.4 | 06/30/2026 |
| Vanguard Capital Management, LLC | 6.64 | 3,669,729 | +0.0 | 03/31/2026 |
| Capital Research Global Investors | 5.64 | 3,119,490 | -0.8 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.65 | 2,573,087 | +0.0 | 03/31/2026 |
| State Street Corp | 4.55 | 2,516,606 | +2.5 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| American Funds Fundamental Invs A | 4.96 | 2,743,562 | -4.8 | 06/30/2026 |
| Capital Group Fundamental Invtrs Comp | 4.96 | 2,743,562 | -4.8 | 06/30/2026 |
| Capital Group Growth Fnd of Amer Comp | 3.98 | 2,201,138 | -17.7 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Howley W Nicholas | Director | 21,548 | 23,185,124 $ | Aug 18, 2026 | indirect |
| Reiss Joel | Co-Chief Operating Officer | 3,600 | 3,873,600 $ | Sep 15, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 20 | 1,119.00 | 22,380 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 30 | 1,112.38 | 33,371 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 40 | 1,106.69 | 44,267 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 5 | 1,105.28 | 5,526 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 125 | 1,104.58 | 138,072 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 210 | 1,103.44 | 231,722 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 274 | 1,102.49 | 302,082 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 166 | 1,101.52 | 182,853 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 60 | 1,100.41 | 66,024 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 90 | 1,099.14 | 98,923 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 150 | 1,098.41 | 164,761 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 294 | 1,097.26 | 322,595 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 196 | 1,096.17 | 214,849 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 225 | 1,095.11 | 246,399 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 383 | 1,094.06 | 419,025 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 282 | 1,093.10 | 308,255 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 100 | 1,091.00 | 109,100 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 70 | 1,090.06 | 76,304 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 10 | 1,088.06 | 10,881 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 120 | 1,087.49 | 130,499 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 110 | 1,086.27 | 119,490 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 240 | 1,084.87 | 260,369 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 170 | 1,092.13 | 185,662 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 310 | 1,082.96 | 335,719 |
| Sep 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Other | 3,900 | 284.97 | 1,111,383 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 190 | 1,241.14 | 235,816 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 1,313 | 1,240.42 | 1,628,674 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 3,980 | 1,239.17 | 4,931,915 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 520 | 1,238.08 | 643,803 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 250 | 1,236.89 | 309,224 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 140 | 1,236.12 | 173,057 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 270 | 1,234.69 | 333,366 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 450 | 1,233.30 | 554,987 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 1,055 | 1,232.01 | 1,299,775 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 830 | 1,231.12 | 1,021,829 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 570 | 1,230.02 | 701,111 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 290 | 1,229.09 | 356,437 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 70 | 1,227.62 | 85,934 |
| Aug 18, 2026 | Howley W Nicholas | Director | Sell | 204 | 1,225.60 | 250,023 |
| Aug 18, 2026 | Howley W Nicholas | Director | Other | 10,132 | 66.47 | 673,474 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 30 | 1,253.08 | 37,592 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 80 | 1,252.11 | 100,169 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 20 | 1,250.82 | 25,016 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 60 | 1,248.26 | 74,896 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 48 | 1,247.31 | 59,871 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 37 | 1,245.90 | 46,098 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 145 | 1,245.29 | 180,566 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 100 | 1,243.91 | 124,391 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 138 | 1,243.03 | 171,538 |
| Aug 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 112 | 1,242.28 | 139,136 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.