SEC Form 4 · accession 0001656109-26-000007
TransDigm Group INC · TDG
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Joel Reiss
Officer — Co-Chief Operating Officer
Period of report
Aug 17, 2026
Accepted (ET)
Aug 18, 2026 · 4:26 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001260221
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Aug 17, 2026 | M | 3,900 | $284.97 | A | 7,500 | D | |
| Common StockF1 | Aug 17, 2026 | S | 140 | $1,232.816 | D | 7,360 | D | |
| Common StockF2 | Aug 17, 2026 | S | 260 | $1,233.8684 | D | 7,100 | D | |
| Common StockF3 | Aug 17, 2026 | S | 327 | $1,234.9279 | D | 6,773 | D | |
| Common StockF4 | Aug 17, 2026 | S | 373 | $1,235.8581 | D | 6,400 | D | |
| Common StockF5 | Aug 17, 2026 | S | 671 | $1,236.799 | D | 5,729 | D | |
| Common StockF6 | Aug 17, 2026 | S | 499 | $1,237.868 | D | 5,230 | D | |
| Common StockF7 | Aug 17, 2026 | S | 340 | $1,238.8357 | D | 4,890 | D | |
| Common StockF8 | Aug 17, 2026 | S | 400 | $1,239.9924 | D | 4,490 | D | |
| Common StockF9 | Aug 17, 2026 | S | 120 | $1,240.778 | D | 4,370 | D | |
| Common StockF10 | Aug 17, 2026 | S | 112 | $1,242.2834 | D | 4,258 | D | |
| Common StockF11 | Aug 17, 2026 | S | 138 | $1,243.026 | D | 4,120 | D | |
| Common StockF12 | Aug 17, 2026 | S | 100 | $1,243.91 | D | 4,020 | D | |
| Common StockF13 | Aug 17, 2026 | S | 145 | $1,245.2852 | D | 3,875 | D | |
| Common StockF14 | Aug 17, 2026 | S | 37 | $1,245.897 | D | 3,838 | D | |
| Common StockF15 | Aug 17, 2026 | S | 48 | $1,247.3063 | D | 3,790 | D | |
| Common StockF16 | Aug 17, 2026 | S | 60 | $1,248.2583 | D | 3,730 | D | |
| Common StockF17 | Aug 17, 2026 | S | 20 | $1,250.823 | D | 3,710 | D | |
| Common StockF18 | Aug 17, 2026 | S | 80 | $1,252.1149 | D | 3,630 | D | |
| Common StockF19 | Aug 17, 2026 | S | 30 | $1,253.082 | D | 3,600 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option | $284.97 | Aug 17, 2026 | M | 3,900 | D | Sep 30, 2021 | Nov 8, 2027 | Common Stock | 3,900 | 8,000 | D |
Explanation of responses
- F1Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,232.2750 - $1,233.1900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F10Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,241.6000 - $1,242.5500. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F11Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,242.6200 - $1,243.5300. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F12Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,243.6700 - $1,244.5000. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F13Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,244.7300 - $1,245.5800. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F14Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,245.7500 - $1,246.1600. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F15Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,246.8900 - $1,247.8550. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F16Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,247.9400 - $1,248.6700. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F17Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,250.6200 - $1,251.0100. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F18Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,251.6500 - $1,252.5000. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F19Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,252.7500 - $1,253.5500. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F2Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,233.3700 - $1,234.3600. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F3Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,234.3700 - $1,235.3600. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F4Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,235.4200 - $1,236.3800. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F5Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,236.4300 - $1,237.4100. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F6Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,237.4300 - $1,238.3900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F7Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,238.4300 - $1,239.2900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F8Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,239.4400 - $1,240.4200. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price
- F9Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,240.6000 - $1,241.2200. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price