TransDigm COO Reiss sells 3,900 shares under plan
Rhea-AI Filing Summary
TransDigm Group INC (TDG) reported that Co-Chief Operating Officer Joel Reiss exercised options for 3,900 shares of common stock on September 15, 2026 at an exercise price of $284.97 per share and sold 3,900 shares in multiple same-day transactions at weighted-average prices around $1,083–$1,119 per share. The filing indicates these trades were made pursuant to a Rule 10b5-1 trading plan.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Exercise and Sale: 3,900 shares ($3.16M approx. pre-tax spread)
Exercise and Sale
29 txns
Insider
Reiss Joel
Role
Co-Chief Operating Officer
Sold
3,900 shs ($4.27M)
Approx. gross sale proceeds
$4.27M
Approx. exercise cost
$1.11M
Approx. pre-tax spread
$3.16M
| 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 | 310 | $1,082.9639 | $336K |
| Sale | Common Stock F2 | 170 | $1,083.6729 | $184K |
| Sale | Common Stock F3 | 240 | $1,084.8696 | $260K |
| Sale | Common Stock F4 | 110 | $1,086.2727 | $119K |
| Sale | Common Stock F5 | 120 | $1,087.4892 | $130K |
| Sale | Common Stock | 10 | $1,088.06 | $11K |
| Sale | Common Stock F6 | 70 | $1,090.0571 | $76K |
| Sale | Common Stock F7 | 100 | $1,091.0018 | $109K |
| Sale | Common Stock F8 | 170 | $1,092.1284 | $186K |
| Sale | Common Stock F9 | 282 | $1,093.1036 | $308K |
| Sale | Common Stock F10 | 383 | $1,094.0605 | $419K |
| Sale | Common Stock F11 | 225 | $1,095.1079 | $246K |
| Sale | Common Stock F12 | 196 | $1,096.1685 | $215K |
| Sale | Common Stock F13 | 294 | $1,097.2633 | $323K |
| Sale | Common Stock F14 | 150 | $1,098.407 | $165K |
| Sale | Common Stock F15 | 90 | $1,099.1429 | $99K |
| Sale | Common Stock F16 | 60 | $1,100.4055 | $66K |
| Sale | Common Stock F17 | 166 | $1,101.5243 | $183K |
| Sale | Common Stock F18 | 274 | $1,102.4893 | $302K |
| Sale | Common Stock F19 | 210 | $1,103.4377 | $232K |
| Sale | Common Stock F20 | 125 | $1,104.5772 | $138K |
| Sale | Common Stock F21 | 5 | $1,105.284 | $6K |
| Sale | Common Stock F22 | 40 | $1,106.6873 | $44K |
| Sale | Common Stock F23 | 30 | $1,108.3433 | $33K |
| Sale | Common Stock F24 | 30 | $1,112.3767 | $33K |
| Sale | Common Stock | 20 | $1,113.37 | $22K |
| Sale | Common Stock F25 | 20 | $1,118.995 | $22K |
Holdings After Transaction:
Stock Option — 4,100 contracts (Direct);
Common Stock — 3,600 shares (Direct)
Footnotes (25)
- F1. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,082.3500 - $1,083.2700. 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 $1,093.6200 - $1,094.5600. 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.
- F11. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,094.6300 - $1,095.5700. 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 $1,095.7000 - $1,096.6900. 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 $1,096.7000 - $1,097.6900. 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 $1,097.7200 - $1,098.7100. 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 $1,098.7700 - $1,099.6500. 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.
- F16. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,099.9300 - $1,100.7000. 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 $1,100.9400 - $1,101.9200. 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 $1,102.0000 - $1,102.9800. 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 $1,103.0100 - $1,103.8850. 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 $1,083.3700 - $1,084.2700. 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.
- F20. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,104.0300 - $1,105.0100. 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.
- F21. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,105.2400 - $1,105.4600. 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.
- F22. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,106.3200 - $1,106.8900. 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.
- F23. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,108.2300 - $1,108.4000. 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.
- F24. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,112.3400 - $1,112.4500. 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.
- F25. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,118.9700 - $1,119.0200. 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 $1,084.6500 - $1,085.2700. 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 $1,085.7600 - $1,086.5700. 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 $1,087.0000 - $1,087.9200. 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 $1,089.5400 - $1,090.3600. 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.
- F7. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,090.5800 - $1,091.4500. 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 $1,091.5800 - $1,092.5700. 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 $1,092.5800 - $1,093.5700. 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
+5 more
8 metrics
Options exercised
3,900 shares
Stock options for TransDigm common stock exercised on September 15, 2026
Option exercise price
$284.97 per share
Exercise price of stock options converted into common stock
Shares sold
3,900 shares
Total TDG common shares sold across 27 transactions on September 15, 2026
Representative sale price range (low)
$1,082.35–$1,083.27 per share
Weighted-average price range for sales referenced in footnote F1
Representative sale price range (high)
$1,118.97–$1,119.02 per share
Weighted-average price range for sales referenced in footnote F25
Option expiration date
November 8, 2027
Expiration of the stock options exercised for 3,900 shares
Net buy/sell shares
3,900 shares sold net
Transaction summary reports net-sell direction for the filing
Rule 10b5-1 plan status
Affirmed under trading plan
Document-level checkbox indicates use of a Rule 10b5-1 trading plan
Key Terms
Rule 10b5-1 trading plan, weighted average price, derivative security
3 terms
Rule 10b5-1 trading plan regulatory
"The filing indicates the 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
"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.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did TDG insider Joel Reiss report in this Form 4?
He exercised options for 3,900 TransDigm (TDG) shares at $284.97 per share and sold 3,900 shares of common stock in multiple transactions on September 15, 2026 at weighted-average prices generally between about $1,083 and $1,119 per share.
Were the TDG trades by Joel Reiss under a Rule 10b5-1 plan?
Yes. The filing indicates the transactions were made under a Rule 10b5-1 trading plan, meaning the trades were executed according to a pre-established arrangement rather than discretionary timing by the insider.
How many TransDigm (TDG) options did Joel Reiss exercise and at what price?
He exercised 3,900 stock options for TransDigm common stock at an exercise price of $284.97 per share. The options were originally exercisable beginning September 30, 2021 and have an expiration date of November 8, 2027.
Is this TDG Form 4 mainly a buy or a sell filing?
Overall it reflects a net sale. Joel Reiss acquired 3,900 shares through option exercise and sold 3,900 shares of common stock in multiple same-day transactions, resulting in 3,900 net shares sold as summarized in the filing’s transaction totals.
AI-generated analysis. How Rhea-AI works. Not financial advice.