TransDigm Group (NYSE: TDG) COO corrects coding of 3,900-share option exercise
Rhea-AI Filing Summary
TransDigm Group executive Joel Reiss, Co-Chief Operating Officer, reported exercising stock options covering 3,900 shares of common stock on July 15, 2026 at an exercise price of $284.97 per share, leaving 11,900 options outstanding. The amended filing corrects the coding of this derivative transaction from an acquisition to a disposition and indicates it was effected under a Rule 10b5-1 trading plan.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
3,900 shares exercised/converted
Exercise
1 txn
Insider
Reiss Joel
Role
Co-Chief Operating Officer
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option F1 | 3,900 | $0.00 | $0.00 |
Holdings After Transaction:
Stock Option — 11,900 shares (Direct)
Footnotes (1)
- F1. This Form 4/A amends the Form 4 originally filed on 07.16.2026 to correct the reporting of the transaction in Table II, which was inadvertently reported as an acquisition ('A') rather than a disposition ('D'). No other changes have been made to the original filing.
Key Figures
Options exercised: 3,900 shares
Exercise price: $284.97 per share
Options remaining: 11,900 shares
+2 more
5 metrics
Options exercised
3,900 shares
Stock options exercised on July 15, 2026
Exercise price
$284.97 per share
Conversion or exercise price of the stock options
Options remaining
11,900 shares
Total derivative shares following the reported transaction
Option expiration
November 8, 2027
Expiration date of the reported stock option grant
10b5-1 plan status
Affirmed
Filing-level checkbox indicates transaction under a Rule 10b5-1 plan
Key Terms
Form 4/A, disposition, derivative security, Stock Option
4 terms
Form 4/A regulatory
"This Form 4/A amends the Form 4 originally filed on 07.16.2026"
Form 4/A is an amended filing that corrects or updates an earlier Form 4, the mandatory report that insiders (like company executives, directors, or large shareholders) must file when their ownership stakes change. Think of it as an edited receipt showing who bought or sold stock and when; investors use it to track insider confidence, detect potential conflicts, and spot trading patterns that might signal future company prospects.
disposition regulatory
"reported as an acquisition ('A') rather than a disposition ('D')"
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, underlying security: Common Stock"
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.
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transaction did TransDigm (TDG) Co-Chief Operating Officer Joel Reiss report in this Form 4/A amendment?
Joel Reiss reported exercising stock options for 3,900 shares of TransDigm common stock on July 15, 2026 at an exercise price of $284.97 per share, a derivative exercise that left 11,900 stock options remaining after the transaction.
Why did TransDigm (TDG) file an amended Form 4/A for Joel Reiss’s option transaction?
The amendment was filed to correct the transaction’s coding in the derivative table, which was initially reported as an acquisition (“A”) but should have been a disposition (“D”). The company states that no other changes were made to the original Form 4.
How many TransDigm (TDG) stock options does Joel Reiss hold after the reported transaction?
Following the derivative exercise, Joel Reiss is reported as holding 11,900 stock options. This figure reflects the total derivative shares following the transaction as disclosed, and relates specifically to the options referenced in the amended Form 4/A.
At what price were the TransDigm (TDG) stock options exercised in Joel Reiss’s amended Form 4/A?
The options were exercised at an exercise price of $284.97 per share, as shown in the derivative transaction details. This represents the conversion price for each underlying share of TransDigm common stock associated with the 3,900 options exercised.
Was Joel Reiss’s TransDigm (TDG) option transaction made under a Rule 10b5-1 trading plan?
Yes. The filing indicates that the reported option exercise was effected under a Rule 10b5-1 trading plan. Such plans provide for pre-arranged trading instructions, which can limit the informational value of the transaction’s timing for outside investors.
What type of security is involved in the TransDigm (TDG) Form 4/A filed for Joel Reiss?
The transaction involves a stock option derivative security convertible into TransDigm common stock. The amended report classifies the event as an exercise or conversion of derivative security affecting 3,900 underlying shares with options expiring on November 8, 2027.