Welcome to our dedicated page for Transdigm Group SEC filings (Ticker: TDG), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
TransDigm Group Incorporated (NYSE: TDG) files a variety of documents with the U.S. Securities and Exchange Commission that provide detailed insight into its aerospace components business, capital structure and governance. This page compiles TransDigm’s SEC filings and pairs them with AI-powered summaries to help readers interpret the information more efficiently.
Investors can use this resource to locate annual reports on Form 10-K and quarterly reports on Form 10-Q, which typically describe TransDigm’s business segments, risk factors, product categories and financial results. For this company, filings often discuss its role as a designer, producer and supplier of highly engineered aircraft components, its organization into segments such as power and control and airframes, and its use of acquisitions and financial leverage as part of its strategy, as reflected in the Polygon description and company disclosures.
Current reports on Form 8-K are particularly important for tracking material events at TransDigm. Recent 8-K filings describe acquisitions such as the Simmonds Precision Products business and a definitive agreement to acquire Stellant Systems, debt offerings and amendments to the company’s credit agreement, special cash dividends funded with new debt and changes in executive leadership and board composition. These documents provide timely details on transactions, financing terms and governance decisions.
This page also offers access to filings related to debt instruments and credit agreements, where TransDigm outlines terms for senior secured notes, senior subordinated notes and term loans, as well as any amendments that reprice or extend these facilities. Where available, insider transaction reports on Form 4 and proxy statements on Schedule 14A can shed light on executive and director share ownership and compensation structures.
Stock Titan’s platform enhances these filings with AI-generated highlights and explanations, helping users quickly identify key sections, understand complex capital structure language and see how new 8-K events connect to prior disclosures. Real-time updates from EDGAR ensure that new TransDigm filings appear promptly, while the AI layer reduces the time needed to parse lengthy documents and track the regulatory record for TDG.
TransDigm Group has signed a definitive agreement to acquire Jet Parts Engineering and Victor Sierra Aviation Holdings, portfolio companies of Vance Street Capital, for approximately $2.2 billion in cash, including certain tax benefits. The two businesses focus on highly engineered, proprietary FAA-approved replacement parts and repairs for the commercial, regional, cargo, general and business aviation aftermarket.
Jet Parts Engineering, based in Seattle, designs and manufactures proprietary OEM-alternative parts and repairs, with engineering and repair locations across several U.S. states and the United Kingdom and approximately 300 employees. Victor Sierra Aviation brings brands such as McFarlane Aviation, Tempest Aero Group and Aviation Products Systems, employs about 400 people, and operates multiple U.S. facilities.
The companies together generated about $280 million of revenue for the calendar year ended December 31, 2025. Closing of the acquisition is subject to regulatory approval in the United States and other customary closing conditions.
TransDigm Group has signed a definitive agreement to acquire Jet Parts Engineering and Victor Sierra Aviation Holdings, portfolio companies of Vance Street Capital, for approximately $2.2 billion in cash, including certain tax benefits. The two businesses focus on highly engineered, proprietary FAA-approved replacement parts and repairs for the commercial, regional, cargo, general and business aviation aftermarket.
Jet Parts Engineering, based in Seattle, designs and manufactures proprietary OEM-alternative parts and repairs, with engineering and repair locations across several U.S. states and the United Kingdom and approximately 300 employees. Victor Sierra Aviation brings brands such as McFarlane Aviation, Tempest Aero Group and Aviation Products Systems, employs about 400 people, and operates multiple U.S. facilities.
The companies together generated about $280 million of revenue for the calendar year ended December 31, 2025. Closing of the acquisition is subject to regulatory approval in the United States and other customary closing conditions.
A selling trust has filed a Form 144 notice to sell shares of the issuer’s common stock. The filing covers 7627 common shares to be sold on the NYSE around 01/14/2026 through Morgan Stanley Smith Barney LLC, with an aggregate market value listed as 10540361.46. These shares were acquired on 01/14/2026 via an exercise of stock options from the issuer, paid in cash on the same date.
The notice also lists prior sales during the past three months by THE FORTUNA TRUST U/T/A DTD 06/01/2018 under a Rule 10b5-1 trading arrangement. Examples include 25000 common shares sold on 01/05/2026 for gross proceeds of 34339836.86 and 17373 shares sold on 01/08/2026 for 24448105.61, along with several additional sales between 10/27/2025 and 12/04/2025.
TransDigm Group director Kevin M. Stein, through the Fortuna Trust dated June 1, 2018, reported an option exercise and related stock sales. On January 8, 2026, the trust exercised a stock option for 17,373 shares of common stock at an exercise price of $342.31 per share, with the price adjusted for dividends declared since August 1, 2022. The same day, the trust sold a total of 17,373 TransDigm Group shares in several market transactions at average prices ranging from about $1,405.3006 to $1,413.17 per share. After these transactions, the trust held 8,158 shares of TransDigm common stock and 50,627 stock options, all reported as indirectly owned.
A shareholder of TDG has filed a Form 144 notice to sell 17,373 shares of common stock. The shares are expected to be sold around 01/08/2026 through Morgan Stanley Smith Barney LLC, with an indicated aggregate market value of $24,065,948.25. The filing notes that there were 56,318,584 common shares outstanding.
The securities to be sold were acquired on 01/08/2026 through an exercise of stock options, paid in cash. The notice also lists prior Rule 10b5-1 sales by The Fortuna Trust in the past three months, including 25,000 shares sold on 01/05/2026 for $34,339,836.86 and 17,526 shares sold on 12/04/2025 for $23,875,414.18.
TransDigm Group Inc. director Kevin Stein, through the Fortuna Trust dated June 1, 2018, reported option exercises and share sales dated 01/05/2026. The trust exercised 17,940 stock options at an exercise price of $105.88 per share and another 7,060 options at $341.28 per share, both relating to TransDigm common stock.
On the same date, the trust sold multiple blocks of TransDigm common stock in open-market transactions at prices ranging from about $1,361.59 to $1,387.035 per share, reported as weighted average prices for each sale line. After these transactions, the trust indirectly held 8,158 shares of TransDigm common stock and 42,940 stock options, all reported as indirectly owned through the Fortuna Trust.
TransDigm Group Inc. reported an insider stock transaction by its Co-Chief Operating Officer, Patrick J. Murphy. On 01/02/2026, Murphy exercised a stock option to acquire 290 shares of TransDigm common stock at an exercise price of $269.42 per share. On the same day, he sold 290 shares of common stock at a price of $1,329.03 per share.
After these transactions, Murphy beneficially owned 1,055 shares of TransDigm common stock directly and held 1,450 stock options as derivative securities.
An affiliated trust of the issuer for ticker TDG has filed a notice of proposed common stock sales under Rule 144. The filing states that 25,000 common shares are to be sold through Morgan Stanley Smith Barney LLC, with an aggregate market value of 33963750.00, and notes that 56,318,584 common shares were outstanding. The approximate sale date is listed as 01/05/2026 on the NYSE.
The 25,000 shares were acquired on 01/05/2026 via the exercise of stock options, paid in cash on the same date. The filing also lists recent 10b5-1 plan sales for THE FORTUNA TRUST U/T/A DTD 06/01/2018, including 17,526 shares sold on 12/04/2025 for gross proceeds of 23875414.18, along with several additional smaller sales in late 2025. The signer represents that they do not know any material adverse, nonpublic information about the issuer.
An affiliate of TDG filed a notice to sell 290 common shares through Morgan Stanley Smith Barney LLC on the NYSE. The shares have an indicated aggregate market value of 385,656.50, compared with 56,318,584 shares outstanding of the same class. The seller acquired the 290 shares on 01/02/2026 by exercising stock options for cash on that same date.
Over the prior three months, the same account executed additional Rule 10b5‑1 sales of TDG common stock: 290 shares on 12/01/2025 for gross proceeds of 391,807.40, 290 shares on 11/03/2025 for 379,900.00, and 580 shares on 10/27/2025 for 785,760.80. The signer represents that they are not aware of undisclosed material adverse information about the issuer.
TransDigm Group Incorporated has signed a definitive agreement to acquire Stellant Systems, Inc. for approximately $960 million in cash, including certain tax benefits. Stellant designs and manufactures high-power electronic components and subsystems for the aerospace and defense market, focusing on highly engineered, proprietary products with meaningful aftermarket demand.
Stellant is expected to generate about $300 million in revenue for the calendar year ending December 31, 2025, with approximately 50% of its revenue from the aftermarket and nearly all from proprietary products. The business operates manufacturing locations in California, Pennsylvania, New York, and Massachusetts and employs roughly 950 people. The acquisition remains subject to U.S. regulatory approvals and customary closing conditions.
TransDigm Group Incorporated has signed a definitive agreement to acquire Stellant Systems, Inc. for approximately $960 million in cash, including certain tax benefits. Stellant designs and manufactures high-power electronic components and subsystems for the aerospace and defense market, focusing on highly engineered, proprietary products with meaningful aftermarket demand.
Stellant is expected to generate about $300 million in revenue for the calendar year ending December 31, 2025, with approximately 50% of its revenue from the aftermarket and nearly all from proprietary products. The business operates manufacturing locations in California, Pennsylvania, New York, and Massachusetts and employs roughly 950 people. The acquisition remains subject to U.S. regulatory approvals and customary closing conditions.
TransDigm Group Inc.’s Co-Chief Operating Officer reported an option exercise and related stock sales. On 12/15/2025, he exercised 3,900 stock options at an exercise price of $284.97 per share and received the same number of TransDigm common shares. The filing then shows multiple open-market sales of TransDigm common stock that day in small blocks at weighted-average prices within ranges from about $1,282.12 to $1,311.40. After these transactions, he directly beneficially owned 3,600 shares of common stock and held 39,200 stock options that remain outstanding.