Form 4: TransDigm Director Sells Shares After Option Exercise

TransDigm Group Director Kevin Stein exercised stock options and subsequently sold a portion of the acquired shares for a significant profit under a Rule 10b5-1 plan.

Summary

• Kevin M. Stein, a Director of TransDigm Group INC (TDG), engaged in multiple transactions on November 25 and 26, 2025, pursuant to a Rule 10b5-1 plan.
• On November 25, 2025, Mr. Stein exercised stock options to acquire 4,187 shares of common stock at an exercise price of $105.88 per share.
• On the same day, he sold 4,097 shares at an average weighted price of $1,360.5495 per share, with prices ranging from $1,360.0000 to $1,360.8500.
• Additionally, on November 25, 2025, he sold 90 shares at an average weighted price of $1,361.8702 per share, with prices ranging from $1,361.7400 to $1,362.0500.
• On November 26, 2025, Mr. Stein exercised options for 30 shares of common stock at $105.88 per share.
• Immediately following, on November 26, 2025, he sold these 30 shares at a price of $1,360.06 per share.
• The exercise price of $105.88 has been adjusted for dividends declared since August 1, 2022.
• Following these reported transactions, Mr. Stein beneficially owns 8,158 shares of common stock indirectly through the Fortuna Trust dated June 1, 2018.
• He also holds 60,058 derivative securities (stock options) indirectly through the Fortuna Trust.

Sentiment

Score: 6

Explanation: The filing details routine insider transactions where a director exercised stock options and sold shares for a substantial profit. This is a common occurrence and reflects positively on the individual's compensation and the stock's appreciation, rather than indicating specific operational performance for the company itself.

Positives

• Director Kevin Stein realized substantial gains by exercising stock options at a low price ($105.88) and selling shares at a significantly higher market price (averaging over $1,360 per share).
• The transactions were conducted under a Rule 10b5-1 plan, indicating pre-scheduled sales and reducing concerns about opportunistic insider trading.

Negatives

• Insider selling, even when pre-planned, can sometimes be perceived by some market participants as a signal, though in this context, it appears to be routine profit-taking from long-held options.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook, as it is solely an insider transaction report.

Industry Context

This Form 4 filing details a routine insider transaction involving a director's exercise of stock options and subsequent sale of shares. It does not provide information directly related to broader industry trends or competitive positioning.

Related Party Transactions

• All reported beneficial ownership of common stock and derivative securities are held indirectly through the Fortuna Trust dated June 1, 2018, which is a related party to the reporting person, Kevin M. Stein.

Stakeholder Impact

• Shareholders: May observe the director's profit-taking, which is a common event for executives with equity compensation. The transactions were pre-planned under Rule 10b5-1, which generally mitigates concerns about opportunistic selling.

Key Dates

Keywords

TransDigm Group, TDG, insider transaction, Form 4, stock options, share sale, director, beneficial ownership, Rule 10b5-1