TDG.NYSETransdigm Group INC
Form 4: TransDigm Group COO Sells Shares
Sentiment:
Insider Transaction (Form 4)
Joel Reiss, Co-Chief Operating Officer of TransDigm Group INC, sold 3,900 shares of common stock on September 15, 2026.
Summary
- Option exercise/conversion: acquired 3,900 Common Stock at $284.97 ($1,111,383) on September 15, 2026; holds 7,500 after (Direct).
- Open-market sale: disposed of 310 Common Stock at $1,082.96 ($335,719) on September 15, 2026; holds 7,190 after (Direct).
- Open-market sale: disposed of 170 Common Stock at $1,083.67 ($184,224) on September 15, 2026; holds 7,020 after (Direct).
- Open-market sale: disposed of 240 Common Stock at $1,084.87 ($260,369) on September 15, 2026; holds 6,780 after (Direct).
- Open-market sale: disposed of 110 Common Stock at $1,086.27 ($119,490) on September 15, 2026; holds 6,670 after (Direct).
- Open-market sale: disposed of 120 Common Stock at $1,087.49 ($130,499) on September 15, 2026; holds 6,550 after (Direct).
- Open-market sale: disposed of 10 Common Stock at $1,088.06 ($10,881) on September 15, 2026; holds 6,540 after (Direct).
- Open-market sale: disposed of 70 Common Stock at $1,090.06 ($76,304) on September 15, 2026; holds 6,470 after (Direct).
- Open-market sale: disposed of 100 Common Stock at $1,091.00 ($109,100) on September 15, 2026; holds 6,370 after (Direct).
- Open-market sale: disposed of 170 Common Stock at $1,092.13 ($185,662) on September 15, 2026; holds 6,200 after (Direct).
- Open-market sale: disposed of 282 Common Stock at $1,093.10 ($308,255) on September 15, 2026; holds 5,918 after (Direct).
- Open-market sale: disposed of 383 Common Stock at $1,094.06 ($419,025) on September 15, 2026; holds 5,535 after (Direct).
- Open-market sale: disposed of 225 Common Stock at $1,095.11 ($246,399) on September 15, 2026; holds 5,310 after (Direct).
- Open-market sale: disposed of 196 Common Stock at $1,096.17 ($214,849) on September 15, 2026; holds 5,114 after (Direct).
- Open-market sale: disposed of 294 Common Stock at $1,097.26 ($322,595) on September 15, 2026; holds 4,820 after (Direct).
- Open-market sale: disposed of 150 Common Stock at $1,098.41 ($164,761) on September 15, 2026; holds 4,670 after (Direct).
- Open-market sale: disposed of 90 Common Stock at $1,099.14 ($98,923) on September 15, 2026; holds 4,580 after (Direct).
- Open-market sale: disposed of 60 Common Stock at $1,100.41 ($66,024) on September 15, 2026; holds 4,520 after (Direct).
- Open-market sale: disposed of 166 Common Stock at $1,101.52 ($182,853) on September 15, 2026; holds 4,354 after (Direct).
- Open-market sale: disposed of 274 Common Stock at $1,102.49 ($302,082) on September 15, 2026; holds 4,080 after (Direct).
- Open-market sale: disposed of 210 Common Stock at $1,103.44 ($231,722) on September 15, 2026; holds 3,870 after (Direct).
- Open-market sale: disposed of 125 Common Stock at $1,104.58 ($138,072) on September 15, 2026; holds 3,745 after (Direct).
- Open-market sale: disposed of 5 Common Stock at $1,105.28 ($5,526) on September 15, 2026; holds 3,740 after (Direct).
- Open-market sale: disposed of 40 Common Stock at $1,106.69 ($44,267) on September 15, 2026; holds 3,700 after (Direct).
- Open-market sale: disposed of 30 Common Stock at $1,108.34 ($33,250) on September 15, 2026; holds 3,670 after (Direct).
- Open-market sale: disposed of 30 Common Stock at $1,112.38 ($33,371) on September 15, 2026; holds 3,640 after (Direct).
- Open-market sale: disposed of 20 Common Stock at $1,113.37 ($22,267) on September 15, 2026; holds 3,620 after (Direct).
- Open-market sale: disposed of 20 Common Stock at $1,118.99 ($22,380) on September 15, 2026; holds 3,600 after (Direct).
- Option exercise/conversion: disposed of 3,900 Stock Option on September 15, 2026; holds 4,100 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $4,268,872 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Joel Reiss — Officer (Co-Chief Operating Officer)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-15 | Option exercise/conversion | Common Stock | 3,900 | $285 | $1.1M | 7,500 |
| 2026-09-15 | Open-market sale | Common Stock | 310 | $1.1K | $335.7K | 7,190 |
| 2026-09-15 | Open-market sale | Common Stock | 170 | $1.1K | $184.2K | 7,020 |
| 2026-09-15 | Open-market sale | Common Stock | 240 | $1.1K | $260.4K | 6,780 |
| 2026-09-15 | Open-market sale | Common Stock | 110 | $1.1K | $119.5K | 6,670 |
| 2026-09-15 | Open-market sale | Common Stock | 120 | $1.1K | $130.5K | 6,550 |
| 2026-09-15 | Open-market sale | Common Stock | 10 | $1.1K | $10.9K | 6,540 |
| 2026-09-15 | Open-market sale | Common Stock | 70 | $1.1K | $76.3K | 6,470 |
| 2026-09-15 | Open-market sale | Common Stock | 100 | $1.1K | $109.1K | 6,370 |
| 2026-09-15 | Open-market sale | Common Stock | 170 | $1.1K | $185.7K | 6,200 |
| 2026-09-15 | Open-market sale | Common Stock | 282 | $1.1K | $308.3K | 5,918 |
| 2026-09-15 | Open-market sale | Common Stock | 383 | $1.1K | $419.0K | 5,535 |
| 2026-09-15 | Open-market sale | Common Stock | 225 | $1.1K | $246.4K | 5,310 |
| 2026-09-15 | Open-market sale | Common Stock | 196 | $1.1K | $214.8K | 5,114 |
| 2026-09-15 | Open-market sale | Common Stock | 294 | $1.1K | $322.6K | 4,820 |
| 2026-09-15 | Open-market sale | Common Stock | 150 | $1.1K | $164.8K | 4,670 |
| 2026-09-15 | Open-market sale | Common Stock | 90 | $1.1K | $98.9K | 4,580 |
| 2026-09-15 | Open-market sale | Common Stock | 60 | $1.1K | $66.0K | 4,520 |
| 2026-09-15 | Open-market sale | Common Stock | 166 | $1.1K | $182.9K | 4,354 |
| 2026-09-15 | Open-market sale | Common Stock | 274 | $1.1K | $302.1K | 4,080 |
| 2026-09-15 | Open-market sale | Common Stock | 210 | $1.1K | $231.7K | 3,870 |
| 2026-09-15 | Open-market sale | Common Stock | 125 | $1.1K | $138.1K | 3,745 |
| 2026-09-15 | Open-market sale | Common Stock | 5 | $1.1K | $5.5K | 3,740 |
| 2026-09-15 | Open-market sale | Common Stock | 40 | $1.1K | $44.3K | 3,700 |
| 2026-09-15 | Open-market sale | Common Stock | 30 | $1.1K | $33.3K | 3,670 |
| 2026-09-15 | Open-market sale | Common Stock | 30 | $1.1K | $33.4K | 3,640 |
| 2026-09-15 | Open-market sale | Common Stock | 20 | $1.1K | $22.3K | 3,620 |
| 2026-09-15 | Open-market sale | Common Stock | 20 | $1.1K | $22.4K | 3,600 |
| 2026-09-15 | Option exercise/conversion | Stock Option | 3,900 | — | — | 4,100 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-15 | Option exercise/conversion (3,900 shares) |
| 2026-09-15 | Open-market sale (310 shares) |
| 2026-09-15 | Open-market sale (170 shares) |
| 2026-09-15 | Open-market sale (240 shares) |
| 2026-09-15 | Open-market sale (110 shares) |
| 2026-09-15 | Open-market sale (120 shares) |
| 2026-09-15 | Open-market sale (10 shares) |
| 2026-09-15 | Open-market sale (70 shares) |
| 2026-09-15 | Open-market sale (100 shares) |
| 2026-09-15 | Open-market sale (170 shares) |
| 2026-09-15 | Open-market sale (282 shares) |
| 2026-09-15 | Open-market sale (383 shares) |
| 2026-09-15 | Open-market sale (225 shares) |
| 2026-09-15 | Open-market sale (196 shares) |
| 2026-09-15 | Open-market sale (294 shares) |
| 2026-09-15 | Open-market sale (150 shares) |
| 2026-09-15 | Open-market sale (90 shares) |
| 2026-09-15 | Open-market sale (60 shares) |
| 2026-09-15 | Open-market sale (166 shares) |
| 2026-09-15 | Open-market sale (274 shares) |
| 2026-09-15 | Open-market sale (210 shares) |
| 2026-09-15 | Open-market sale (125 shares) |
| 2026-09-15 | Open-market sale (5 shares) |
| 2026-09-15 | Open-market sale (40 shares) |
| 2026-09-15 | Open-market sale (30 shares) |
| 2026-09-15 | Open-market sale (30 shares) |
| 2026-09-15 | Open-market sale (20 shares) |
| 2026-09-15 | Open-market sale (20 shares) |
| 2026-09-15 | Option exercise/conversion (3,900 shares) |
Keywords
insider transaction, Form 4, TDG, TransDigm Group INC, bearish, Joel Reiss
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