TDG
Transdigm Group Incorporated
1,146.80$
-2.5%
vs. previous close
Closing price · As of: Oct 30, 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.
2.9%
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 | 8.81 | 4,871,505 | +5.9 | 06/30/2026 |
| Capital World Investors | 7.73 | 4,274,109 | -8.4 | 06/30/2026 |
| Vanguard Capital Management, LLC | 6.61 | 3,653,511 | -0.4 | 06/30/2026 |
| Capital Research Global Investors | 5.64 | 3,119,490 | -0.8 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.67 | 2,580,994 | +0.3 | 06/30/2026 |
| State Street Corp | 4.63 | 2,559,096 | +1.7 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| American Funds Fundamental Invs A | 5.01 | 2,767,769 | +0.9 | 09/30/2026 |
| American Funds Growth Fd of Amer A | 3.74 | 2,067,231 | -6.1 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.17 | 1,754,235 | -1.3 | 09/30/2026 |
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 |
|---|---|---|---|---|---|
| Hennessy Sean P | Director | 33,836 | 38,803,228 $ | Sep 18, 2026 | direct |
| Barr David | Director | 32,225 | 36,955,630 $ | Sep 18, 2026 | direct |
| Howley W Nicholas | Director | 21,787 | 24,984,773 $ | Aug 18, 2026 | both |
| Small Robert J | Director | 5,677 | 6,510,384 $ | Sep 18, 2026 | direct |
| Palmer Peter | Director | 4,064 | 4,660,595 $ | Sep 18, 2026 | direct |
| Reiss Joel | Co-Chief Operating Officer | 3,600 | 4,128,480 $ | Oct 15, 2026 | direct |
| Graff Michael | Director | 1,717 | 1,969,056 $ | Sep 18, 2026 | direct |
| Mccullough Gary E | Director | 993 | 1,138,772 $ | Sep 18, 2026 | direct |
| Santana Michele | Director | 805 | 923,174 $ | Sep 18, 2026 | direct |
| Cronin Jane M. | Director | 734 | 841,315 $ | Sep 18, 2026 | direct |
| Krasik Irina Igorevna | Director | 13 | 14,908 $ | Sep 18, 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 |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 438 | 1,135.95 | 497,548 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 495 | 1,135.00 | 561,823 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 317 | 1,133.89 | 359,442 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 210 | 1,132.30 | 237,783 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 130 | 1,131.33 | 147,072 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 150 | 1,129.38 | 169,407 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 120 | 1,127.90 | 135,348 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 305 | 1,127.01 | 343,739 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 278 | 1,125.86 | 312,989 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 600 | 1,125.00 | 675,001 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 306 | 1,124.00 | 343,944 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 131 | 1,123.09 | 147,124 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 30 | 1,120.30 | 33,609 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 60 | 1,121.58 | 67,295 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 50 | 1,116.02 | 55,801 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 100 | 1,130.06 | 113,006 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 20 | 1,112.27 | 22,245 |
| Oct 15, 2026 | Reiss Joel | Co-Chief Operating Officer | Other | 4,100 | 284.97 | 1,168,377 |
| Sep 18, 2026 | Krasik Irina Igorevna | Director | Other | 13 | 1,085.00 | 14,105 |
| Sep 18, 2026 | Cronin Jane M. | Director | Other | 34 | 1,085.00 | 36,890 |
| Sep 18, 2026 | Santana Michele | Director | Other | 34 | 1,085.00 | 36,890 |
| Sep 18, 2026 | Palmer Peter | Director | Other | 34 | 1,085.00 | 36,890 |
| Sep 18, 2026 | Howley W Nicholas | Director | Other | 126 | 1,085.00 | 136,710 |
| Sep 18, 2026 | Graff Michael | Director | Other | 34 | 1,085.00 | 36,890 |
| Sep 18, 2026 | Barr David | Director | Other | 46 | 1,085.00 | 49,910 |
| Sep 18, 2026 | Small Robert J | Director | Other | 52 | 1,085.00 | 56,420 |
| Sep 18, 2026 | Hennessy Sean P | Director | Other | 46 | 1,085.00 | 49,910 |
| Sep 18, 2026 | Mccullough Gary E | Director | Other | 41 | 1,085.00 | 44,485 |
| 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 |
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: October 30, 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.