Form 4 for TDG TransDigm Group
Accepted 2026-02-18 00:00:00 ET · period of report 2026-02-17 · accession 0001193125-26-056993 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-02-18 | 2026-02-17 | TDG | Reiss Joel | Co-COO | S - Sale+OE | $1,293.88 | -3,900 | 4,079 | -49% | -$5.05M |
| DT | 2026-02-18 | 2026-02-17 | TDG | Reiss Joel | Co-COO | M - OptEx | $284.97 | +3,900 | 7,500 | +108% | +$1.11M |
| DT | 2026-02-18 | 2026-02-17 | TDG | Reiss Joel | Co-COO | M - OptEx | $0.00 | -3,900 | 31.4K | -11% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-02-17 | S | D | 330 | $1,300.91 | 3,749 | D | — | — | (F20) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,300.2800 - $1,301.1900. 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. |
| 2 | Common | Common Stock | 2026-02-17 | S | D | 29 | $1,302.41 | 3,720 | D | — | — | (F21) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,302.2000 - $1,302.5200. 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. |
| 3 | Common | Common Stock | 2026-02-17 | S | D | 50 | $1,303.99 | 3,670 | D | — | — | (F22) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,303.7400 - $1,304.4100. 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. |
| 4 | Common | Common Stock | 2026-02-17 | S | D | 70 | $1,305.28 | 3,600 | D | — | — | (F23) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,305.0800 - $1,305.6200. 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. |
| 5 | Common | Common Stock | 2026-02-17 | M | A | 3,900 | $284.97 | 7,500 | D | — | — | |
| 6 | Common | Common Stock | 2026-02-17 | S | D | 27 | $1,279.68 | 7,473 | D | — | — | (F1) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,279.3400 - $1,280.3100. 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. |
| 7 | Common | Common Stock | 2026-02-17 | S | D | 113 | $1,280.72 | 7,360 | D | — | — | (F2) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,280.3500 - $1,281.1200. 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. |
| 8 | Common | Common Stock | 2026-02-17 | S | D | 99 | $1,282.44 | 7,261 | D | — | — | (F3) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,281.9100 - $1,282.8900. 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. |
| 9 | Common | Common Stock | 2026-02-17 | S | D | 71 | $1,283.22 | 7,190 | D | — | — | (F4) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,283.0900 - $1,284.0000. 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. |
| 10 | Common | Common Stock | 2026-02-17 | S | D | 120 | $1,284.71 | 7,070 | D | — | — | (F5) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,284.3000 - $1,285.2300. 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. |
| 11 | Common | Common Stock | 2026-02-17 | S | D | 120 | $1,286.06 | 6,950 | D | — | — | (F6) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,285.5900 - $1,286.4800. 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. |
| 12 | Common | Common Stock | 2026-02-17 | S | D | 106 | $1,287.16 | 6,844 | D | — | — | (F7) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,286.6100 - $1,287.5600. 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. |
| 13 | Common | Common Stock | 2026-02-17 | S | D | 104 | $1,287.99 | 6,740 | D | — | — | (F8) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,287.6200 - $1,288.5500. 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. |
| 14 | Common | Common Stock | 2026-02-17 | S | D | 140 | $1,289.10 | 6,600 | D | — | — | (F9) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,288.7000 - $1,289.4200. 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. |
| 15 | Common | Common Stock | 2026-02-17 | S | D | 140 | $1,290.22 | 6,460 | D | — | — | (F10) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,289.7000 - $1,290.6300. 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. |
| 16 | Common | Common Stock | 2026-02-17 | S | D | 182 | $1,291.11 | 6,278 | D | — | — | (F11) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,290.7500 - $1,291.6500. 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. |
| 17 | Common | Common Stock | 2026-02-17 | S | D | 214 | $1,292.35 | 6,064 | D | — | — | (F12) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,291.8700 - $1,292.8600. 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. |
| 18 | Common | Common Stock | 2026-02-17 | S | D | 361 | $1,293.21 | 5,703 | D | — | — | (F13) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,292.9000 - $1,293.7800. 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. |
| 19 | Common | Common Stock | 2026-02-17 | S | D | 172 | $1,294.31 | 5,531 | D | — | — | (F14) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,293.9000 - $1,294.8300. 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. |
| 20 | Common | Common Stock | 2026-02-17 | S | D | 266 | $1,295.50 | 5,265 | D | — | — | (F15) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,294.9800 - $1,295.9400. 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. |
| 21 | Common | Common Stock | 2026-02-17 | S | D | 248 | $1,296.63 | 5,017 | D | — | — | (F16) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,296.0800 - $1,297.0700. 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. |
| 22 | Common | Common Stock | 2026-02-17 | S | D | 326 | $1,297.49 | 4,691 | D | — | — | (F17) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,297.1700 - $1,298.0500. 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. |
| 23 | Common | Common Stock | 2026-02-17 | S | D | 392 | $1,298.74 | 4,299 | D | — | — | (F18) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,298.2500 - $1,299.1700. 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. |
| 24 | Common | Common Stock | 2026-02-17 | S | D | 220 | $1,299.56 | 4,079 | D | — | — | (F19) Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,299.2500 - $1,300.0800. 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. |
| 25 | Derivative | Stock Option | 2026-02-17 | M | D | 3,900 | $0.00 | 31,400 | D | $284.97 · 2021-09-30 to 2027-11-08 | 3,900 Common Stock |