TransDigm COO sells 3,900 shares after option exercise
For TransDigm Group INC (TDG), Co-Chief Operating Officer Joel Reiss reported an option exercise and related share sales.
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Form Type
4
Rhea-AI Filing Summary
For TransDigm Group INC (TDG), Co-Chief Operating Officer Joel Reiss reported an option exercise and related share sales. On August 17, 2026 he exercised 3,900 stock options at a strike price of $284.97 per share, acquiring 3,900 shares of common stock. That same day he sold 3,900 common shares in multiple open-market transactions at weighted-average prices ranging from about $1,232.28 to $1,253.55 per share. Following the exercise, he held 8,000 stock options for TransDigm common stock. The filing indicates these transactions were made under a Rule 10b5-1 trading plan.
Insider Trade Summary 10b5-1
Exercise and Sale: 3,900 shares ($3.72M approx. pre-tax spread)
Exercise and Sale
21 txns
Insider
Reiss Joel
Role
Co-Chief Operating Officer
Sold
3,900 shs ($4.83M)
Approx. gross sale proceeds
$4.83M
Approx. exercise cost
$1.11M
Approx. pre-tax spread
$3.72M
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option | 3,900 | $0.00 | $0.00 |
| Exercise | Common Stock | 3,900 | $284.97 | $1.11M |
| Sale | Common Stock F1 | 140 | $1,232.816 | $173K |
| Sale | Common Stock F2 | 260 | $1,233.8684 | $321K |
| Sale | Common Stock F3 | 327 | $1,234.9279 | $404K |
| Sale | Common Stock F4 | 373 | $1,235.8581 | $461K |
| Sale | Common Stock F5 | 671 | $1,236.799 | $830K |
| Sale | Common Stock F6 | 499 | $1,237.868 | $618K |
| Sale | Common Stock F7 | 340 | $1,238.8357 | $421K |
| Sale | Common Stock F8 | 400 | $1,239.9924 | $496K |
| Sale | Common Stock F9 | 120 | $1,240.778 | $149K |
| Sale | Common Stock F10 | 112 | $1,242.2834 | $139K |
| Sale | Common Stock F11 | 138 | $1,243.026 | $172K |
| Sale | Common Stock F12 | 100 | $1,243.91 | $124K |
| Sale | Common Stock F13 | 145 | $1,245.2852 | $181K |
| Sale | Common Stock F14 | 37 | $1,245.897 | $46K |
| Sale | Common Stock F15 | 48 | $1,247.3063 | $60K |
| Sale | Common Stock F16 | 60 | $1,248.2583 | $75K |
| Sale | Common Stock F17 | 20 | $1,250.823 | $25K |
| Sale | Common Stock F18 | 80 | $1,252.1149 | $100K |
| Sale | Common Stock F19 | 30 | $1,253.082 | $38K |
Holdings After Transaction:
Stock Option — 8,000 contracts (Direct);
Common Stock — 3,600 shares (Direct)
Footnotes (19)
- F1. Price 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
- F10. Price 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
- F11. Price 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
- F12. Price 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
- F13. Price 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
- F14. Price 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
- F15. Price 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
- F16. Price 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
- F17. Price 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
- F18. Price 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
- F19. Price 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
- F2. Price 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
- F3. Price 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
- F4. Price 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
- F5. Price 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
- F6. Price 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
- F7. Price 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
- F8. Price 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
- F9. Price 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
Key Figures
Options Exercised: 3,900 shares
Option Exercise Price: $284.97 per share
Shares Sold: 3,900 shares
+4 more
7 metrics
Options Exercised
3,900 shares
Stock options for TransDigm common stock exercised on August 17, 2026
Option Exercise Price
$284.97 per share
Strike price of the stock options exercised into 3,900 common shares
Shares Sold
3,900 shares
Total TransDigm common shares sold in multiple transactions on August 17, 2026
Lowest Sale Price Range
$1,232.2750 per share
Lower bound of reported sale price range in footnote F1
Highest Sale Price Range
$1,253.5500 per share
Upper bound of reported sale price range in footnote F19
Remaining Options
8,000 shares
Stock options for TransDigm common stock held after the reported exercise
Option Expiration Date
November 8, 2027
Expiration date of the stock option series exercised on August 17, 2026
Key Terms
Rule 10b5-1 trading plan, weighted average price, derivative security, stock option
4 terms
Rule 10b5-1 trading plan regulatory
"The filing indicates these transactions were made under a Rule 10b5-1 trading plan."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"Price reported constitutes the average weighted price of shares sold."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
stock option financial
""security_title": "Stock Option""
A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did TransDigm (TDG) executive Joel Reiss report in this Form 4?
Co-Chief Operating Officer Joel Reiss reported exercising 3,900 stock options and selling 3,900 common shares of TransDigm on August 17, 2026. The activity reflects an option exercise followed by same-day open-market sales at various prices.
What options did Joel Reiss exercise in TransDigm (TDG) according to this filing?
He exercised 3,900 stock options for TransDigm common stock at a strike price of $284.97 per share. These options were originally exercisable beginning September 30, 2021 and are scheduled to expire on November 8, 2027 if not exercised earlier.
How many TransDigm (TDG) stock options does Joel Reiss hold after these transactions?
After exercising 3,900 options, Joel Reiss is reported to hold 8,000 stock options for TransDigm common stock. This figure reflects the position in the specific option series involved, as shown in the post-transaction derivative holdings in the Form 4 data.
Were Joel Reiss’s TransDigm (TDG) trades made under a Rule 10b5-1 plan?
Yes. The Form 4 indicates that these transactions were made under a Rule 10b5-1 trading plan. Such plans are pre-arranged trading programs that allow insiders to sell or buy shares according to preset instructions, independent of subsequent material nonpublic information.
What role does Joel Reiss hold at TransDigm (TDG) in this Form 4?
The reporting person, Joel Reiss, is identified as an officer of TransDigm Group INC, serving as Co-Chief Operating Officer. The reported option exercise and share sales relate to his holdings as a company officer with direct ownership of the affected securities.
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